Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Social and Behavioral Sciences (783)
- Environmental Studies (777)
- Engineering (226)
- Physical Sciences and Mathematics (222)
- Civil and Environmental Engineering (220)
-
- Environmental Sciences (218)
- Arts and Humanities (10)
- History (7)
- Architecture (6)
- Cultural History (6)
- Environmental Design (4)
- Medicine and Health Sciences (4)
- Chemistry (3)
- Hydraulic Engineering (3)
- Life Sciences (3)
- Risk Analysis (3)
- Economics (2)
- Engineering Science and Materials (2)
- International and Area Studies (2)
- Materials Science and Engineering (2)
- Nursing (2)
- Urban, Community and Regional Planning (2)
- Accounting (1)
- Animal Sciences (1)
- Architectural History and Criticism (1)
- Architectural Technology (1)
- Asian Studies (1)
- Biotechnology (1)
- Business (1)
- Chemical Engineering (1)
- Keyword
-
- Thailand (10)
- Water quality (7)
- Heavy metals (6)
- Adsorption (4)
- Lead (4)
-
- Northern Thailand (4)
- Air pollution (3)
- Arsenic (3)
- Climate change (3)
- Greenhouse gas (3)
- Mining (3)
- PM10 (3)
- Rice husk (3)
- Surfactant (3)
- Volatile organic compounds (3)
- Vulnerability (3)
- Adsorption isotherm (2)
- Adsorption kinetic (2)
- Algal bloom (2)
- Anaerobic digestion (2)
- Bangkok (2)
- Bioaccumulation (2)
- Biosorption (2)
- Co-management (2)
- Contamination (2)
- Dendrochronology (2)
- Electronic waste (2)
- Emission (2)
- Environmental management (2)
- Fatigue (2)
- Publication Year
- Publication
- Publication Type
Articles 391 - 420 of 824
Full-Text Articles in Entire DC Network
Cladophora Sp. Biosorption Of Metal-Contaminated Water, Rosamond R.M.S. Tshumah-Mutingwende, Fumitake Takahashi, Ewa Cukrowska, Julien Lusilao-Makiese
Cladophora Sp. Biosorption Of Metal-Contaminated Water, Rosamond R.M.S. Tshumah-Mutingwende, Fumitake Takahashi, Ewa Cukrowska, Julien Lusilao-Makiese
Applied Environmental Research
Artisanal and Small-scale Gold Mining (ASGM) activities employing the mercury amal-gamationtechnique have resulted in a significant drop in the quality of water from Ngwabalozi River, Zimbabwe. Mercury levels as high as 0.31 mg L-1have been reported in its waters and the low river pH (pH 3) favors proliferation of microorganisms responsible for methylmercury (a potent neurotoxin) formation. Thus, removal of mercury from contaminated systems is a priority. Therefore, the aim of this study is to develop a low-cost batch reactor for the removal of mercury from mercury contaminated acidic waters tomeet the World Health Organization (WHO) standard of 0.006 mg …
Nutrient Removal Performance On Domestic Wastewater Treatment Plants (Full Scale System) Between Tropical Humid And Cold Climates, Pongsak Noophan, Rawiwan Rodpho, Pimook Sonmee, Martha Hahn, Suthep Sirivitayaphakorn
Nutrient Removal Performance On Domestic Wastewater Treatment Plants (Full Scale System) Between Tropical Humid And Cold Climates, Pongsak Noophan, Rawiwan Rodpho, Pimook Sonmee, Martha Hahn, Suthep Sirivitayaphakorn
Applied Environmental Research
Two full scale systems of oxidation ditches for domestic wastewater treatment plants (WWTP) were used as study sites: Phuket Province, southern Thailand (representative of tropical humid climates) and Plum Creek, Castle Rock, Colorado, USA (representative of cold climates). The treatment systems at both sites were designed for biological nutrient removal (BNR) fromextended activated sludge. Nitrogen is removed by nitrification-denitrification processes. The solid retention time (SRT) for both treatment plants was = 10 das recommended by theory for complete nitrification in activated sludge wastewater treatment plants. Influents and effluents from these sites were compared in respect to flow rate, biochemical oxygen …
Estimation Of Leachate Generated From Zimbabwe's Municipal Solid Wastes (Msw) Landfills Using A Simple Stochastic Water Balance Model, Andile B. Maqhuzu, Kunio Yoshikawa, Fumitake Takahashi
Estimation Of Leachate Generated From Zimbabwe's Municipal Solid Wastes (Msw) Landfills Using A Simple Stochastic Water Balance Model, Andile B. Maqhuzu, Kunio Yoshikawa, Fumitake Takahashi
Applied Environmental Research
Landfilling remains the predominant component in the waste management hierarchy of most developing nations. The adoption of emerging waste management technologies and the use of recycling or composting is still in its infancy. Among several inadequacies of current waste management practices in Zimbabwe is the absence of sanitary disposal of municipal solid waste (MSW) in landfills. As a result, the leachate generation rate and leachate characteristics are not routinely monitored. Such information is essential when assessing the impact of leachate on ground and surface water or a facility to which the leachate can be conveyed. Indiscriminate disposal of MSW at …
An Assessment Of Climate Variability On Farmers' Livelihoods Vulnerability In Ayeyarwady Delta Of Myanmar, Naw M. Lar, Nathsuda Pumijumnong, Raywadee Roachanakanan, Noppol Arunrat, Soe Tint
An Assessment Of Climate Variability On Farmers' Livelihoods Vulnerability In Ayeyarwady Delta Of Myanmar, Naw M. Lar, Nathsuda Pumijumnong, Raywadee Roachanakanan, Noppol Arunrat, Soe Tint
Applied Environmental Research
This study assesses the vulnerability of farm households in the Ayeyarwady Region, Myanmar. Fifty-nine farm households were purposively sampled to conduct a questionnaire survey, and secondary data were collected in 2016. In order to assess variability in household vulnerability, the Livelihood Vulnerability Index (LVI), based on five types of 'capital' as identified in the Sustainable Livelihoods Framework, was adopted and modified according to the local context. Vulnerability scores ranged from 0 (low vulnerability) to 1 (highly vulnerable), with an average LVI of 0.442, indicating moderate overall vulnerability across the study area. Regarding the five types of 'capital', households were most …
Flash Flood Risk Estimation Of Wadi Qena Watershed, Egypt Using Gis Based Morphometric Analysis, Wael M. Elsadek, Mona G. Ibrahim, Wael E. Mahmod
Flash Flood Risk Estimation Of Wadi Qena Watershed, Egypt Using Gis Based Morphometric Analysis, Wael M. Elsadek, Mona G. Ibrahim, Wael E. Mahmod
Applied Environmental Research
Flash flooding is one of the periodic geohazards in the eastern desert of Egypt where many parts of Upper Egypt, Sinai, and Red Sea areas were hit by severe flash floods, for example in 1976, 1982, 1996 and January 2010. The hazard degree for each sub-basin was determined using the approach developed by El-Shamy for assessing susceptibility of sub-basins to flash flooding risk. To identify at-risk sub-basins, two different methods were applied. The first method is based on the relationship between the drainage density and bifurcation ratio, and the second one uses the relationship between drainage frequency and bifurcation ratio. …
Morphometric Temporal Change Analysis For The River Nile Forced Bends Using Rs/Gis Techniques: Case Study Of Damietta Branch Of The Nile River, Egypt, Reham A.B. Aborahma, Wael E. Mahmod, Hassan E.B. Fath
Morphometric Temporal Change Analysis For The River Nile Forced Bends Using Rs/Gis Techniques: Case Study Of Damietta Branch Of The Nile River, Egypt, Reham A.B. Aborahma, Wael E. Mahmod, Hassan E.B. Fath
Applied Environmental Research
The River Nile is one of the world's longest rivers. The Damietta branch in Egypt is important as a major source of irrigation and navigation path from Cairo to the Mediterranean Sea. Morphological changes in this branch of the Nile occurred following construction of the Aswan High Dam, which affected sedimentation and erosive flow, especially at bends in the river. In this study, morphometric temporal changes were investigated for the forced bends using Remote Sensing (RS) and Geographical Information System (GIS) techniques for a study period between 1987 and 2015. In addition, a comparative study was performed among three image …
Reclaiming Stolen Voices : An Indigenous, Region-Based Reading Of Leslie Marmon SilkoS Ceremony, Patricia GraceS Potiki And Kiana DavenportS Shark Dialogues, Krittaporn Reungwattanakul
Reclaiming Stolen Voices : An Indigenous, Region-Based Reading Of Leslie Marmon SilkoS Ceremony, Patricia GraceS Potiki And Kiana DavenportS Shark Dialogues, Krittaporn Reungwattanakul
Chulalongkorn University Theses and Dissertations (Chula ETD)
This thesis aims to examine how contemporary indigenous writers reclaim their self-definition through the born-within, region-based perspectives in three novels: Leslie Marmon Silko's Ceremony (1977), Patricia Grace' Potiki (1986), and Kiana Davenport's Shark Dialogues (1998). It propounds that the three novels employ indigenous myths, knowledge, and epistemologies to present their modern indigenous culture, history and identity as distinct from mainstream Western stereotypical perceptions. These writers also suggest the necessity for hybridization of traditional culture in order for indigenous cultures to survive when it comes into contact with the global community. The three selected literary texts present integral roles of nature …
The Relationship Between Facebook Users' Motivation On Environmental Issues, Environmental Awareness And Behavioral Tendency In Vietnam, Linh Nguyen Ba Tue
The Relationship Between Facebook Users' Motivation On Environmental Issues, Environmental Awareness And Behavioral Tendency In Vietnam, Linh Nguyen Ba Tue
Chulalongkorn University Theses and Dissertations (Chula ETD)
The objectives of this research were to study the Facebook users' motivation on environmental issues, their environmental awareness and behavioral tendency in Vietnam and to explore the relationship among these three variables. Three social media influencers who had more than 10,000 followers on their Facebook profiles, demonstrated open, explicit environmentally-friendly lifestyle and achieved certain media recognition were invited to join in-depth interviews. Four hundred and fifty eight Vietnamese male and female respondents, aged between 18 and 45 years old and currently residing in Vietnam, were asked to complete an online and offline questionnaire survey. The results depicted that the respondents …
Halogenated Parabens And Halogenated Phenoxyethanols As Antibacterial Agents In Cushion Products, Lalisa Dechnitirat
Halogenated Parabens And Halogenated Phenoxyethanols As Antibacterial Agents In Cushion Products, Lalisa Dechnitirat
Chulalongkorn University Theses and Dissertations (Chula ETD)
Halogenated compounds are interesting as antimicrobial agents for cosmetic product. The bromination of methyl paraben and 2-phenoxyethanol were carried out under mild conditions using NaBr and 30% H2O2 yielding methyl 3,5-dibromo-4-hydroxybenzoate and p-bromo-2-phenoxyethanol, respectively. Three parameters including the ratio of brominating agent and oxidizing agent, type of solvents, and temperature were optimized. These synthesized products were used as antibacterial agent in cushion product as individual or blend. The challenge test results revealed that methyl 3,5-dibromo-4-hydroxybenzoate and p-bromo-2-phenoxyethanol could effectively inhibit Staphylococcus aureus, Candida. albicans, and Aspergillus brasiliensis more than their parents. For stability test, there was no change of the …
The Use Of Dredged Sediment From The Watsongpeenong Canal With Paper Mill Residue To Produce Facing Bricks, Jiraporn Namchan, Nuta Supakata
The Use Of Dredged Sediment From The Watsongpeenong Canal With Paper Mill Residue To Produce Facing Bricks, Jiraporn Namchan, Nuta Supakata
Applied Environmental Research
The potential to use dredged sediment from the Watsongpeenong Canal and paper mill residue as the primary raw materials for producing facing bricks was studied in the laboratory. Dredged sediment and paper mill residue were chemically, mineralogically, and thermally characterized using X-ray fluorescence (XRF) and X-ray diffraction (XRD). To evaluate the effects of the contents of the paper mill residue on pore-forming, large amounts of paper mill residue, ranging from 5 to 7 % by mass, were blended with dredged sediments and fired at 700oC. The physical-mechanical properties, including dimensions and tolerances, wryness, deviation of the right angle, water absorption, …
Assessment Of The Sustainability Of Accra Metropolitan Area, Ghana, Moses K. Aryee, Nathsuda Pumijumnong, Paramita Punwong, Raywadee Roachanakanan
Assessment Of The Sustainability Of Accra Metropolitan Area, Ghana, Moses K. Aryee, Nathsuda Pumijumnong, Paramita Punwong, Raywadee Roachanakanan
Applied Environmental Research
Cities have become integral in the quest to achieving universal sustainable development. For example, the United Nations in 2015 as part of the 17 Sustainable Development Goals called for cities and human settlements to be inclusive, safe, resilient and sustainable (Goal 11). This was in line with the 2012 National Urban Policy of Ghana which seeks to promote a sustainable, spatially integrated and orderly development of urban settlements with adequate housing, infra-structure and services, efficient institutions, and a sound living and working environment for all people to support the rapid socioeconomic development of Ghana. Six years into the imple-mentation of …
Evaluation Of Greenhouse Gas Emissions From Municipal Solid Waste (Msw) Management: Case Study Of Lampang Municipality, Thailand, Pantitcha Outapa, Veerapas Na Roi-Et
Evaluation Of Greenhouse Gas Emissions From Municipal Solid Waste (Msw) Management: Case Study Of Lampang Municipality, Thailand, Pantitcha Outapa, Veerapas Na Roi-Et
Applied Environmental Research
The issue of greenhouse gas (GHG) emissions from municipal solid waste (MSW) is important in the context of climate change. Reduction of GHGs from waste disposal systems is one of the management strategies forming part of Thailand's National Economic and Social Development Plan. This project evaluated emissions from a municipal solid waste system covering transportation and disposal in Lampang Municipality, northern Thailand. GHG emissions from transportation were estimated by the Institute for Global Environmental Strategies (IGES) based on the travel distance of the vehicles, using a vehicle emission model and vehicle fuel consumption. GHG emissions during the disposal process were …
Seasonal And Land Use Effects On Amphibian Abundance And Species Richness In The Sakaerat Biosphere Reserve, Thailand, Matthew Crane, Colin Strine, Pongthep Suwanwaree
Seasonal And Land Use Effects On Amphibian Abundance And Species Richness In The Sakaerat Biosphere Reserve, Thailand, Matthew Crane, Colin Strine, Pongthep Suwanwaree
Applied Environmental Research
Habitat destruction and degradation in the tropics have led to a dramatic increase in altered habitats. Understanding the impacts of these disturbed areas on biodiversity will be critical to future conservation efforts. Despite heavy deforestation, Southeast Asia is underrepresented in studies investigating faunal communities in human-modified landscapes. This project assessed the herpetofaunal community in dry dipterocarp forest, secondary disturbed forest, and Eucalyptus plantations in the Sakaerat Biosphere Reserve. In May, June, and September of 2015, we surveyed using 10 passive trapping arrays. Both the Eucalyptus plantations and secondary disturbed forest habitats (224 and 141 individuals, respectively) had higher amphibian abundance …
Investigating Reef Contact Rates Of Snorkel Visitors At Koh Sak, Pattaya On Guided And Non-Guided Coral Reef Tours, Wayne Phillips
Investigating Reef Contact Rates Of Snorkel Visitors At Koh Sak, Pattaya On Guided And Non-Guided Coral Reef Tours, Wayne Phillips
Applied Environmental Research
Recreational snorkelling is a popular activity at Koh Sak, Pattaya Bay and although most snorkel visitors to the island arrive by speedboat on guided tours, many visitors arrive on tours that do not provide a guide. Because there is widespread agreement that reef-based tourism negatively impacts coral reefs it is important to understand the potential role guides play in reducing visitor impacts. In this study 421 snorkelers (35 % of whom came on non-guided tours) were observed on the reef for a period of 10 minutes. The following information was recorded so that a per person reef-contact rate could be …
Preliminary Study Of Color Removal From Moh Hom Dyeing Wastewater Using A Low Cost Activated Carbon Derived From Pineapple Waste, Nittaya Pasukphun, Yanasinee Suma
Preliminary Study Of Color Removal From Moh Hom Dyeing Wastewater Using A Low Cost Activated Carbon Derived From Pineapple Waste, Nittaya Pasukphun, Yanasinee Suma
Applied Environmental Research
In Northern Thailand, the folk dress of the culture can still be seen in everyday use, properly called "Moh Hom". The production of Moh Hom is undertaken by small-meduim enterprises (SMEs), which are not subject to regulation to control environmental management. The Moh Hom fabric dyeing produces blue-colored wastewater which is typically discharged untreated into natural waterways, causing water pollution. Activated carbon adsorption offers an interesting option for on-site wastewater treatment for colour removal. Pineapple waste is a widely-available and free source of activated carbon in Chiang Rai Province, Northern Thailand. The current study examined the adsorption characteristics of pineapple …
Preliminary Feasibility Of Using Natural Wetland For University Wastewater Treatment: A Case Study, Nittaya Pasukphun, Yanasinee Suma, Vivat Keawdunglek, Pussadee Laor, Anuttara Hongtong
Preliminary Feasibility Of Using Natural Wetland For University Wastewater Treatment: A Case Study, Nittaya Pasukphun, Yanasinee Suma, Vivat Keawdunglek, Pussadee Laor, Anuttara Hongtong
Applied Environmental Research
Wetlands contribute to water quality improvement and play an important role in the global carbon cycle. As such, wetlands can sequester carbon and mitigate greenhouse gas emissions. This study utilized a survey as a preliminary investigation of the feasibility of using natural wetlands for university wastewater treatment. A total of 13 natural ponds containing water from rainfall and some discharge from the Rotating Batch Contractor (RBC) in Mae Fah Luang University (MFU) were selected. Of all the 13 ponds, the pond at the stadium was selected as the most suitable, due to the following physical and chemical parameters: slope was < 5%, maximum depth was 3.1 m, mean temperature of 24.5 °C, dissolved oxygen 6.31 mg L-1, pH 7.56, TDS 180 ppt, electrical conductivity 253 µS cm-1, and containing 2.35 % organic matter. Total cost and carbon emissions were compared between RBC and the proposed natural wetland. Construction, operation and maintenance costs of natural wetland were very low compared with RBC due to no chemical, electricity and skilled staff required. Similarly, the lower electrical consumption of the natural wetland resulted in reduced carbon emissions of 102.9 kg CO2eq per year. This preliminary result can be used to select possible options for university wastewater treatment.
Development Of The Strategic Framework For Sustainable Development Of The Special Economic Zones In Asean Economic Community: A Case Study Of Savannakhet - Mukdahan, Kantachon Siwapimon, Thavivongse Sriburi
Development Of The Strategic Framework For Sustainable Development Of The Special Economic Zones In Asean Economic Community: A Case Study Of Savannakhet - Mukdahan, Kantachon Siwapimon, Thavivongse Sriburi
Applied Environmental Research
The study proposes a strategic sustainable development (SD) framework for the special economic zones in the ASEAN Economic Community (AEC) by investigating 11 key factors to the success of SD, using the concepts of Strategic Environment Assessment (SEA) and Sustainability Assessment (SA). The key factors are 1) public education, 2) educational system, 3) international SDstandard, 4) policy, 5) management structure, 6) environmental management, 7) zoning, 8) expenditure, 9) public participation, 10) public health and 11) local business protection. The study use qualitative methods including a literature review as well as collection of primary data through a semi-structured interview form by …
Spatial Seasonal Distribution Of Climatological Precipitation Over The Middle Of The Indochina Peninsula, Nattapon Mahavik
Spatial Seasonal Distribution Of Climatological Precipitation Over The Middle Of The Indochina Peninsula, Nattapon Mahavik
Applied Environmental Research
Rainfall intensity and frequency are important parameters in agricultural development and water resource management. The middle of the Indochina peninsula climate is characterized by rainfall variability associated with complex terrains. The present study focuses on spatial seasonal extreme precipitation trends over the middle of the Indochina Peninsula for the 30 year period from 1978-2007. Daily gridded precipitation data obtained at 0.5° horizontal grid resolution from APHRODITE (Asian Precipitation-Highly Resolved Observational Data Integration Towards Evaluation of Water Resources) was used to detect the spatial trends with the use of the Man-Kendall and Theil-Sen approach. Extreme precipitation indices were selected from the …
Analysis Of Air Quality Impacts On Human Health Using The Geoinformatics Application: Chiang Rai Province, Anuttara Hongthong, Yanasinee Suma, Nittaya Pasukphun, Vivat Keawdounglek
Analysis Of Air Quality Impacts On Human Health Using The Geoinformatics Application: Chiang Rai Province, Anuttara Hongthong, Yanasinee Suma, Nittaya Pasukphun, Vivat Keawdounglek
Applied Environmental Research
This research aims to study air pollution dispersion in Chiang Rai Province, Thailand. The relationship between air pollutants, meteorology and population health were considered. The levels of air pollutants were used to establish a spatial and temporal analysis by Inverse Distance Weighted (IDW) interpolation from Geographic Information Systems (GIS), involved with occurrences of disease cases in the study area. The average monthly air pollution data were collected from Thailand's Pollution Control Department and data on respiratory disease were collected from Chiang Rai Provincial Public Health Office during 2011 to 2014. The results indicated that monthly average PM10 concentrations started to …
Assessment Of Elephant Dietary Biomass At The Adjoining Area Of Kaeng Krachan Natural Park, Thailand, Luechai Kroutnoi, Thavivongse Sriburi, Saowanee Wijitkosum, Kamol Nuanyai
Assessment Of Elephant Dietary Biomass At The Adjoining Area Of Kaeng Krachan Natural Park, Thailand, Luechai Kroutnoi, Thavivongse Sriburi, Saowanee Wijitkosum, Kamol Nuanyai
Applied Environmental Research
This study investigated the dietary diversity and biomass of the elephants (Elephas maximus) ranging in the area adjoining Kaeng Krachan Natural Park, Pa Deng Sub-district, Kaeng Krachan District, Petchaburi Province, Thailand. The investigation was conducted by recon-naissance survey transect (Recce) combined with concentric sample plots with 3 different radii to observe vegetation and collect data on trees, saplings, seedlings, and undergrowth from 89 locations in the study area. Six transects along elephant feeding trails were surveyed at 200 m intervals within 15 m from the center of both sides of each line. The vegetation comprised in all 57 families and …
Assessing The Sustainability Level Of Municipal Solid Waste Management In Bangkok, Thailand By Wasteaware Benchmarking Indicators, Bokham Chanhthamixay, Sujitra Vassanadumrongdee, Suthirat Kittipongvises
Assessing The Sustainability Level Of Municipal Solid Waste Management In Bangkok, Thailand By Wasteaware Benchmarking Indicators, Bokham Chanhthamixay, Sujitra Vassanadumrongdee, Suthirat Kittipongvises
Applied Environmental Research
The rapid increase in waste volume leads to numerous and widespread impacts on sustainable development including social, economic and environmental dimensions. This study applied Wasteaware benchmarking, which is a set of international indicators, to evaluate the effectiveness and sustainability of municipal solid waste management in Bangkok. The indicators allowidentification of strengths and weaknesses of the urban waste management system, providing evidence-based guidance for further improvement. Structured questionnaires were developed based on the indicators and its manual for in-depth interviews with key stakeholders from Bangkok Metropolitan Administration (BMA). The data were analyzed using wasteaware datasheet under Microsoft Excel with score coding, …
Investigation Of Formaldehyde In Gross Anatomy Laboratory: Area-Based And Exposure Levels, Ventilation, Health Risk And Clinical Symptoms, Kritsana Homwutthiwong, Maneerat Ongwandee
Investigation Of Formaldehyde In Gross Anatomy Laboratory: Area-Based And Exposure Levels, Ventilation, Health Risk And Clinical Symptoms, Kritsana Homwutthiwong, Maneerat Ongwandee
Applied Environmental Research
Formaldehyde is commonly used in embalming solution in medical fields to preserve tissues. Formaldehyde vapor released from cadavers during dissection practice can adversely affect students and instructors in gross anatomy laboratories. Therefore, this study investigated formaldehyde concentrations in a gross anatomy laboratory of Mahasarakham University, Thailand. Area-based sampling was conducted for three scenarios: (1) a laboratory cleaning period, (2) three periods of teaching classes and (3) a non-teaching class period. Personal samples were also collected for five consecutive working days from two anatomy lab instructors and a non-lab instructor. Measurements were conducted during May to October 2016 using cartridges filled …
Potential Biosurfactant-Producing Bacteria From Pharmaceutical Wastewater Using Simple Screening Methods In South-West, Nigeria, Aderonke K. Akintokun, Seun O. Adebajo, Caroline A. Akinremi
Potential Biosurfactant-Producing Bacteria From Pharmaceutical Wastewater Using Simple Screening Methods In South-West, Nigeria, Aderonke K. Akintokun, Seun O. Adebajo, Caroline A. Akinremi
Applied Environmental Research
merging multiple opportunities for industrial production and environmental applications have focused increasing research attention on biosurfactants in recent years. Hydrocarbon-polluted soils have proved a major source of biosurfactant-producing bacteria. In this study an alternative method of producing biosurfactants was established, based on pharmaceutical effluents. Pharmaceutical effluents are a rich source of complex organic compounds with potential as a substrate for micro-bial biosurfactant production. A successful biosurfactant screening assay is achieved when a com-bination of different methods are employed. Biosurfactant producing bacteria were isolated from pharmaceutical effluent and identified by biochemical methods. The best biosurfactant producer was identified by a molecular …
Dominant Root Associated Fungi (Raf) From Drynaria Quercifolia L. Either Induce Or Retard Growth Of Psb Rc10 Rice (Oryza Sativa L.) In Gibberellic Acid-Inhibited Medium, Jomar L. Aban, Racquel C. Barcelo, Evelyn E. Oda, Gaudelia A. Reyes, Teodora D. Balangcod, Rosemary M. Gutierrez, Roland M. Hipol
Dominant Root Associated Fungi (Raf) From Drynaria Quercifolia L. Either Induce Or Retard Growth Of Psb Rc10 Rice (Oryza Sativa L.) In Gibberellic Acid-Inhibited Medium, Jomar L. Aban, Racquel C. Barcelo, Evelyn E. Oda, Gaudelia A. Reyes, Teodora D. Balangcod, Rosemary M. Gutierrez, Roland M. Hipol
Applied Environmental Research
The testing and use of microorganisms for in vitro growth promotion of agriculturally significant crops such as rice has increased but remains underexploited. The current study aims to explore growth-enhancing mechanisms of dominant root-associated fungi (RAF) isolates from Drynaria quercifolia and test their effects on rice. The most abundant RAF on five tree-collection sites were cultured in vitro. Genomic DNA of the RAF were extracted and the ITS (internal transcribed spacer) region of the 18S ribosomal DNA (rDNA) were sequenced and molecularly identified. Two RAF isolates significantly increased the plant shoot/total length (Meyerozyma guilliermondii: 10.29±4.18/13.46±4.18 cm; Trichoderma simmonsii: 10.33±1.38/13.23+1.58 cm), …
Bioaccumulation Of Heavy Metals Using Selected Organisms Isolated From Electronic Waste Dumpsite Of Two South-Western States In Nigeria, Akintokun K. Aderonke, Onatunde O. Oladimeji, Olufunke B. Shittu, Itunu C. Okeyode, Michael O. Taiwo
Bioaccumulation Of Heavy Metals Using Selected Organisms Isolated From Electronic Waste Dumpsite Of Two South-Western States In Nigeria, Akintokun K. Aderonke, Onatunde O. Oladimeji, Olufunke B. Shittu, Itunu C. Okeyode, Michael O. Taiwo
Applied Environmental Research
Heavy metals from electronic wastes can accumulate to alarming concentrations in soils, causing significant detrimental impacts on human life and the environment. Bioaccumulation of heavy metals by bacteria and fungi has been a major focus of most bioremediation studies owing to the excellent metal-binding properties. The current study was conducted to isolate the most promising Zn, Cu and Pb tolerant microorganisms from contaminated soils, and to assess their metal accumulating abilities. Bacillus licheniformis, B. polymyxa, Pseudomonas aeruginosa, Micrococcus roseus, Aspergillus niger and A. flavus were selected for the bioaccumulation study, based on their known tolerance to heavy metals. Bacillus licheniformis …
Mineralogical And Chemical Characteristics Of Gossan Waste Rocks From A Gold Mine In Northeastern Thailand, Thitiphan Assawincharoenkij, Christoph Hauzenberger, Chakkaphan Sutthirat
Mineralogical And Chemical Characteristics Of Gossan Waste Rocks From A Gold Mine In Northeastern Thailand, Thitiphan Assawincharoenkij, Christoph Hauzenberger, Chakkaphan Sutthirat
Applied Environmental Research
The mineralogical and chemical compositions of various ocher gossans from a gold mine in northeastern Thailand were investigated, including some heavy metals and other toxic elements. Mineralogical characteristics were carried out using X-Ray Diffractometer (XRD) and Scanning Electron Microscope (SEM) whereas chemical compositions were analyzed using Electron Probe Micro-Analyzer (EPMA). These ocher gossans can be classified, initially based on Munsell color, into five types: type-I (pale-yellow color), type-II (brownish-yellow color), type-III (yellowish-brown color), type-IV (dusky-red color) and type-V (red color). The primary silicate minerals (i.e., quartz, garnet epidote and amphibole) are found in type -I, -II, -III and -IV. They …
Solid Waste Generation, Composition And Management In Paro Hotel Industry, Choni Zangmo, Alice Sharp
Solid Waste Generation, Composition And Management In Paro Hotel Industry, Choni Zangmo, Alice Sharp
Applied Environmental Research
Management of solid waste has become an increasingly important global issue as a result of population growth, as well as increasing individual needs, changes in lifestyle and growth in tourism. This waste management problem has become severe in the Paro region of Bhutan, driven by growth in tourism, changes in consumption patterns and growth in GDP. This research aimed to study the amount of waste sent to landfill, and the current status of solid waste management systems and waste composition in Paro District hotels. The current composition of solid waste from hotels comprises organic waste (53 %), glass (14 %), …
Kaolin Modified Nano Zero Valent Iron Synthesis Via Box-Behnken Design Optimization, Pummarin Khamdahsag, Wannakan Thongkao, Apichart Saowapakpongchai, Visanu Tanboonchuy
Kaolin Modified Nano Zero Valent Iron Synthesis Via Box-Behnken Design Optimization, Pummarin Khamdahsag, Wannakan Thongkao, Apichart Saowapakpongchai, Visanu Tanboonchuy
Applied Environmental Research
Nano zero valent iron (NZVI) has been extensively studied for its application to treat pollutants, particularly in contaminated water. This research studies enhancement of the reducing power of NZVI using kaolin as a supporter and ethanol as a medium. Kaolin modified nano zero valent iron (K-NZVI) was synthesized under three different parameters including ethanol content (0-100 v%), ratio of kaolin to NZVI (0-1.5), and dropping rate of NaBH4 (4-10 mL/min). The Box-Behnken Design was used to design the experimental conditions, and Reactive Red 120 was used as an organic pollutant probe to quantify the reducing power of the synthesized K-NZVI. …
Microbial Dynamics And Biogas Production During Single And Co-Digestion Of Cow Dung And Rice Husk, Aderonke K. Akintokun, Wasiu A. Abibu, Moses O. Oyatogun
Microbial Dynamics And Biogas Production During Single And Co-Digestion Of Cow Dung And Rice Husk, Aderonke K. Akintokun, Wasiu A. Abibu, Moses O. Oyatogun
Applied Environmental Research
Anaerobic digestion is achieved by the combined effort of hydrolytic, acetogenic and methanogenic bacteria. Microbial dynamics and biogas production during anaerobic digestion of cow dung and rice husk were studied in this research. The experiment lasted for 30 days using a 10 L scale bio-digester. All proximate parameters reduced significantly after digestion for CD (cow dung), RH (rice husk), and CD:RH (cow dung and rice husk) except moisture content, which increased for all substrates. Ash content (1.08-1.67 mg) and crude fibre (1.27-1.96 mg) increased in CD only. The pH ranges for the substrates were CD (7.0-7.5), RH (6.1-7.6), and CD:RH …
A Gis Model For Pm10 Exposure From Biomass Burning In The North Of Thailand, Borworn Mitmark, Wanida Jinsart
A Gis Model For Pm10 Exposure From Biomass Burning In The North Of Thailand, Borworn Mitmark, Wanida Jinsart
Applied Environmental Research
Human exposure to particulate matter with an aerodynamic diameter below 10 µm (PM10) is found to be associated with biomass burning in Thailand. Recent investigations confirm that primary sources of PM10 are natural forest fires and agricultural waste burning. Incidence of atmospheric haze increases significantly during the dry season from January to April. PM10 exposure in eight provinces in Northern Thailand were determined using GIS through spatial interpolation. Daily average ambient PM10 concentrations from 10 monitoring stations were used as the input data for the GIS model. Three interpolation techniques: Inverse Distance Weighted (IDW), Kriging and Spline, were compared. The …