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Articles 301 - 330 of 824
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Treatment Of Iron From Groundwater By Ozonation: Influence Of Hardness As A Scavenger, Apiradee Sukmilin, Ratsamee Sangsirimongkolying
Treatment Of Iron From Groundwater By Ozonation: Influence Of Hardness As A Scavenger, Apiradee Sukmilin, Ratsamee Sangsirimongkolying
Applied Environmental Research
This study assesses the efficiency of using ozone technology to treat iron from groundwater while hardness acts as a radical scavenger. Batch experiments were conducted to determine the effects of initial pH 6, 7 and 8, and hardness of 300, 400 and 500 mg L-1 and kinetic analysis. The optimum conditions were found to be initial pH of 8 and hardness of 300 mg L-1. The removal efficiency of iron by ozonation was 99.97%, which was higher than that of air without ozone applied (83.67%). However, the presence of hardness and tert-butanol (TBA) had a negative effect on the …
Source And Distribution Of Polycyclic Aromatic Hydrocarbons (Pahs) In Surface Sediment From Chalong Bay, Phuket, Thailand, Danai Tipmanee, Yada Patchim, Penjai Sompongchaiyakul
Source And Distribution Of Polycyclic Aromatic Hydrocarbons (Pahs) In Surface Sediment From Chalong Bay, Phuket, Thailand, Danai Tipmanee, Yada Patchim, Penjai Sompongchaiyakul
Applied Environmental Research
This study aimed to investigate the spatial distribution and apportionment of potential sources of the 16 US-EPA priority PAHs in surface sediments of Chalong Bay, Phuket, Thailand. A total 28 of sediment samples were collected from areas with high maritime activity in Chalong Bay, subjected to conventional high recovery Soxhlet extraction, purified with SiO2 column chromatography, and quantified by Gas Chromatography-Mass Spectrometry (GC/MS). Total concentration of PAHs (Σ16PAHs) ranged from 31.15 to 1696 ng g−1 dry weight, with an average of 198.2 ± 318.5 ng g−1 dry weight. Binary diagnostic ratios plots were used to distinguish between petrogenic and pyrogenic …
Current Trends In Steroidal 17Α-Ethynylestradiol (Ee2) Removal From The Environment: A Review, Wasiu A. Abibu, Gafar Bamigbade, Amos O. Kolawole, Taiwo Ajayi, Abdul W. Sakariyau
Current Trends In Steroidal 17Α-Ethynylestradiol (Ee2) Removal From The Environment: A Review, Wasiu A. Abibu, Gafar Bamigbade, Amos O. Kolawole, Taiwo Ajayi, Abdul W. Sakariyau
Applied Environmental Research
Emerging contaminants have posed major environmental and health challenges to human and aquatic lives. They include pharmaceuticals, endocrine disrupting compounds (EDCs), persistent environmental pollutants and many more. EE2 is an example of an endocrine disrupting compounds (EDCs) increasingly gaining acceptance and used to augment the deficiencies of other reproductive hormones. EE2 constitutes environmental nuisance via discharge into aquatic bodies, thus, threatening aquatic lives and resulting in health defects in human. It is worthy of note that previous researchers have channeled their studies to identifying ways of expelling EE2 from the environment. However, they remain persistent in the environment. The current …
Change In Rainfall Patterns In The Hilly Region Of Uttarakhand Due To The Impact Of Climate Change, Dilip Kumar, Rajib K. Bhattacharjya
Change In Rainfall Patterns In The Hilly Region Of Uttarakhand Due To The Impact Of Climate Change, Dilip Kumar, Rajib K. Bhattacharjya
Applied Environmental Research
Uttarakhand, a Himalayan state of India, may experience an increase in temperature of 1.4°C to 5.8°C by 2100 due to global warming. The rise in temperature may melt the glaciers of the state and may have some significant impact on the rainfall. In this study, we have quantified the changes in the rainfall of the state. Also, an attempt has been made to evaluate the impact of climate change on rainfall. The future rainfall can be estimated by using a global circulation model (GCM). However, due to the very coarse spatial resolution of the different GCM, we cannot use them …
Comparison Of Direct-Reading And Gravimetric Methods Of Particle Measurement In A Science Building, Silpakorn University, Aungsiri Tipayarom, Prayad Sangngam, Siraphop Pinitkarn
Comparison Of Direct-Reading And Gravimetric Methods Of Particle Measurement In A Science Building, Silpakorn University, Aungsiri Tipayarom, Prayad Sangngam, Siraphop Pinitkarn
Applied Environmental Research
This study aimed to develop relationships between particulate matter (PM) concentrations obtained from a direct-reading instrument to those from a gravimetric method. TSI DustTrak II Aerosol Monitors (Model 8530), a direct-reading instrument for PM10 and PM2.5 measurement, together with personal air pumps connected to a Sensidyne cyclone and a SKC Personal Environmental Monitor (PEM) for gravimetric PM10 and PM2.5 measurements respectively were deployed in the Faculty of Science building, Silpakorn University, Nakhon Pathom, Thailand. Comparison of the results from each instrument indicated that PM10 and PM2.5 concentrations obtained from the TSI DustTrak were higher. The linear relationship from ordinary least …
Ozone Formation Potential Of Ambient Volatile Organic Compounds At Roadside In Bangkok, Thailand, Narita Fakkaew, Surat Bualert, Thunyapat Thongyen, Thitima Rungratanaubon
Ozone Formation Potential Of Ambient Volatile Organic Compounds At Roadside In Bangkok, Thailand, Narita Fakkaew, Surat Bualert, Thunyapat Thongyen, Thitima Rungratanaubon
Applied Environmental Research
Volatile organic compounds (VOCs) play an important role in atmospheric chemistry due to their high reactivity—reacting photochemically with oxides of nitrogen (NOx) in the presence of solar radiation forming tropospheric ozone (O3). Each VOC species have different effects on ozone formation according to the rates and pathways of their reactions. The objective of this study aims to examine ozone formation from the estimation of ozone formation potential (OFP). The observation of 29 VOCs species was carried out in the urban area near the roads of Bangkok, Thailand. Measurements were carried out during the dry season, from 16th February to 15th …
Critical Factors And Their Correlation Affecting Green Industry Performance: Evidences From Small And Medium Enterprises, Phurita Noranarttakun, Chanathip Pharino
Critical Factors And Their Correlation Affecting Green Industry Performance: Evidences From Small And Medium Enterprises, Phurita Noranarttakun, Chanathip Pharino
Applied Environmental Research
Large companies have achieved excellent progress toward green production while small and medium enterprises (SMEs) showed limited progress. This research aims to investigate key factors affect different stages of enhancing green industry implementation particularly in SMEs. This study conducted a systematic analysis to offer recommendations to unlock the inhibitors of the green industry. The electronic products and electrical equipment manufacturing industry in Thailand was chosen as a case study. Questionnaire is the main approach to collect primary data from SMEs. The structural equation model is developed to examine correlation and the degree of influencing factors. The model indicated that the …
Evaluating Water Quality Variation In The Vietnamese Mekong Delta Area Using Cluster And Discriminant Analysis, Giao Thanh Nguyen, Thi Hong Nhien Huynh
Evaluating Water Quality Variation In The Vietnamese Mekong Delta Area Using Cluster And Discriminant Analysis, Giao Thanh Nguyen, Thi Hong Nhien Huynh
Applied Environmental Research
The study aims to assess spatial and temporal water quality variations in the upper reaches of the Vietnamese Mekong Delta. Thirty-one water monitoring samples of the two main rivers (Tien and Hau Rivers) and six canals flowing through An Giang Province were collected in thedry season (March) and the rainy season (September) from 2009 to 2019. Seven physicochemicalparameters were analyzed including temperature, pH, dissolved oxygen (DO), biochemical oxygendemand (BOD), total suspended solids (TSS), orthophosphate (P-PO43-), and coliforms. Water quality index (WQI), cluster analysis (CA), and discriminant analysis (DA) were applied to evaluate water quality, spatial and temporal variations, and seasonal …
Case Study Of Modular Pre-Cast Concrete On-Site Stormwater Detention System During Monsoon Season In Southeast Asia, Darren Y.S. Mah, Johnny O.K. Ngu, Rosmina A. Bustami, Frederik J. Putuhena
Case Study Of Modular Pre-Cast Concrete On-Site Stormwater Detention System During Monsoon Season In Southeast Asia, Darren Y.S. Mah, Johnny O.K. Ngu, Rosmina A. Bustami, Frederik J. Putuhena
Applied Environmental Research
On-site stormwater detention system within a residential property is meant for an environmental protection device that temporarily stores stormwater within the property lot to mitigate flash flood, particularly during rainy seasons brought by the northeast monsoon. A field test was constructed in a house's car porch with a 4.40 m x 4.70 m x 0.45 m tank filled with precast-concrete modular units with an effective storage volume of 3.97 m3. The system received water from a 95 m2 house roof via 0.1 m diameter pipe, discharged water via 0.05 m diameter pipe. It had recorded six observed storm events coincided …
Environmental Degradation-Education Nexus In Malaysia, Wong Sing Yun
Environmental Degradation-Education Nexus In Malaysia, Wong Sing Yun
Applied Environmental Research
This study aims to examine the role of education on CO2 emissions in Malaysia from 1974 to 2014. The unit root tests indicated that the variables were integrated in the same order. As such, the Johansen Co-integration Approach can be employed in this empirical analysis to analyze the impacts of the selected variables. The long-run estimation revealed that economic growth (GDP) and energy consumption (ENERGY) has a negative effect on CO2 emissions. Meanwhile, secondary school education (EDU) demonstrated a significant positive relationship with environmental degradation in the long-run. This can be inferred that secondary school education has a negative effect …
Assessment Of Hydrothermal Parameters On Alkaline Activation Of Fly Ashes Using A Central Composite Design, Ivan Supelano García, César Armando Ortíz Otálora, Carlos Arturo Parra Vargas, Julieth Alexandr Mejía Gómez
Assessment Of Hydrothermal Parameters On Alkaline Activation Of Fly Ashes Using A Central Composite Design, Ivan Supelano García, César Armando Ortíz Otálora, Carlos Arturo Parra Vargas, Julieth Alexandr Mejía Gómez
Journal of Metals, Materials and Minerals
Coal fly ash (CFA) is a powder generated during combustion of coal; its improper disposal constitutes an environmental issue. To minimize this problem, one of the uses of CFA is as feedstock for production of zeolite. Different studies have shown that zeolites may be easily obtained from CFA by relatively cheap and fast conversion processes. Most of these studies have been focused on the study of the zeolite synthesis using classical methods through changing one factor per time and fixing the other factors, where it illustrates the impact of each variable individually via a huge number of experiments, however it …
Knowledge Distribution On Smart City Research : An Overview Of Systematic Literature Reviews, Arif Budy Pratama
Knowledge Distribution On Smart City Research : An Overview Of Systematic Literature Reviews, Arif Budy Pratama
Journal of Urban Culture Research
The proliferation of smart cities around the globe has attracted research communities in academic debates. As a fast-growing research subject, huge amounts of studies are available in documenting smart cities. While literatures provide many review papers synthesizing knowledge from empirical and case studies, systematic review dedicated for review papers is still rare. This paper aims to fill this gap by identifying knowledge distribution in smart city scholarships drawing from review papers including systematic literature reviews, bibliometric and scientometric. To achieve the objective, a Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) protocol was conducted filtering 86 review papers to …
Benin Kingdom's Art Traditions And Culture, Festus Osarumwense Uzzi, Afeez Babatunde Siyanbola, Daniel Omoruan
Benin Kingdom's Art Traditions And Culture, Festus Osarumwense Uzzi, Afeez Babatunde Siyanbola, Daniel Omoruan
Journal of Urban Culture Research
This study works on Benin kingdom art traditions and culture. The methodology of these studies were based on field work and oral interview in writing the history of Benin kingdom and its monarchy. The various traditions in Benin City and its environs are also to be identified; potters, bronze casters were interviewed on the history of craft practice. The study also examines the symbolic meaning of each of the traditions. It projects the aesthetic qualities, and the effects of new ideas of the indigenous Benin people‘s craft, and how Benin culture in Nigeria are interpreted with respect to environmental influences …
Optimal Multi-Reservoir System Operations Under Inflow Scenarios In Nam Ngum River Basin, Lao Pdr, Bounhome Kimmany
Optimal Multi-Reservoir System Operations Under Inflow Scenarios In Nam Ngum River Basin, Lao Pdr, Bounhome Kimmany
Chulalongkorn University Theses and Dissertations (Chula ETD)
The Nam Ngum River is one of the main rivers in Lao PDR. Many hydropower projects are currently operated, under construction, and in the planning stage within the Nam Ngum River Basin (NNRB). These hydropower projects are managed by different organizations which could lead to conflict in operation and hinder the achievement of national developments. The main objective of this research is therefore to develop an optimization model for maximizing hydropower production in the NNRB through optimal reservoir operation under the impact of climate change. The potential consequence of maximizing hydropower production that could lead to flooding was also considered …
Assessment Of Housing Satisfaction Among Women In Nigeria : Experience From Ibadan Municipality, Adewale Yoade
Assessment Of Housing Satisfaction Among Women In Nigeria : Experience From Ibadan Municipality, Adewale Yoade
Journal of Urban Culture Research
This study investigated satisfaction with public housing amongst women in Ibadan Municipality, Nigeria. A cross-sectional survey of residents in two selected housing estates owned by the Oyo State was conducted using structured questionnaire as data collection instrument. Data were analyzed using descriptive statistics and inferential. It was observed that most women living in public housing sampled in the study area were low and middle income earners and not satisfied with their present housing conditions. The management aspects of the housing schemes, size and security of the dwelling units were the main factors that determined respondents’ satisfaction with their housing environment. …
Word Frequency Level And Lexical Coverage In The Reading Comprehension Texts Of The Malaysian University English Test, Melisa Charles Benedict, Ahmad Affendi Shabdin
Word Frequency Level And Lexical Coverage In The Reading Comprehension Texts Of The Malaysian University English Test, Melisa Charles Benedict, Ahmad Affendi Shabdin
PASAA
The central foundation of knowledge is through grasping what is being read. Therefore, it is significant to recognise the difficulty level of a reading text for better and comprehensive understanding. The present study is an attempt to identify the word frequency level and lexical coverage of the Malaysian University English Test (MUET) reading texts which is deemed to be intricate for students. The anticipation of the Education Ministry of Malaysia is that students are capable and competent in comprehending academic texts which is required of them at the university. Nonetheless, the problem lies in students’ lack of vocabulary size and …
The Spatial Variability Of Soil Physical Properties Of Different Sized-Gap In A Subtropical Forest, China, Supaporn Buajan, Jinfu Liu, Zhongsheng He
The Spatial Variability Of Soil Physical Properties Of Different Sized-Gap In A Subtropical Forest, China, Supaporn Buajan, Jinfu Liu, Zhongsheng He
Applied Environmental Research
Gap areas create heterogeneity in the spatial environment, which is important to plant regeneration and diversity. Soil physical properties (SPP) are factors that affect plant growth. This study aims to assess the spatial variability of SPP in different gap sizes and to determine the effect of gap size on SPP. We used geostatistical analysis to illustrate the spatial patterns of SPP variability within 9 gaps, classified into three sizes (small, medium, and large) and under the canopy at the Castanopsis kawakamii natural reserve forest, the soil samples were collected entire gap area at 20 cm depth with the grid system …
Ecosystem Service Value Of The Mixed Land Use Pattern In Asia: Thailand's Experience, Nararuk Boonyanam, Somskaow Bejranonda
Ecosystem Service Value Of The Mixed Land Use Pattern In Asia: Thailand's Experience, Nararuk Boonyanam, Somskaow Bejranonda
Applied Environmental Research
The rapid increase in economic development and urbanisation along the Eastern Economic Corridor (EEC) of Thailand has accelerated the change in its ecosystem service value (ESV), leading to the demand for related analysis to ensure sustainable growth in the area. The aim of this study is to: (1) evaluate the land use change in Chonburi Province; the most urbanised city in the EEC of Thailand between 2006 and 2016, and (2) assess the land use change impact on ESV. Secondary data from land use maps for 2006 and 2016 was used to evaluate land use change and its impact on …
Effect Of Modified Septic Tank On Groundwater Quality Around Federal University Of Agriculture, Abeokuta, South-West Nigeria, Kofoworola Olatunde, Modupe Sarumi, Sadiq Abdulsalaam, Babatunde Bada, Funmilola Oyebanji
Effect Of Modified Septic Tank On Groundwater Quality Around Federal University Of Agriculture, Abeokuta, South-West Nigeria, Kofoworola Olatunde, Modupe Sarumi, Sadiq Abdulsalaam, Babatunde Bada, Funmilola Oyebanji
Applied Environmental Research
Groundwater forms a very important part of the water supply chain and its quality can be affected by improperly constructed septic tanks used by homeowners in peri-urban locations such as Abeokuta in recent times. Sixty groundwater samples collected from hand-dug wells ≤15m from septic tanks were analysed for physicochemical and bacteriological parameters using standard procedures. Results were integrated with multivariate and hydrogeochemical analyses to assess the effect improperly built septic tanks have on groundwater quality around the Federal University of Agriculture, Abeokuta. The range of values for the measured parameters include: pH (6.26 - 8.66), EC (83 - 1035 μS …
Tourism Density Effect On Environmental Performance Index: Evidence In Asean Countries, Jain Yassin, Sarma Aralas, Danie E.K. Basa
Tourism Density Effect On Environmental Performance Index: Evidence In Asean Countries, Jain Yassin, Sarma Aralas, Danie E.K. Basa
Applied Environmental Research
The purpose of this current study is to assess the effect of tourism density on the environmentalperformance index on 10 ASEAN countries from 2002 to 2017. This study adopted panel data regressions with the Driscoll and Kraay standard. This method accounts for cross-sectionaldependence, heteroskedasticity, autocorrelation, and the possible correlation between countries when observing the environmental performance index and tourism density. Empirical results found a statistically significant and negative relationship between the tourism density index and the environmental performance index in 10 ASEAN countries. This result implied that an increasein the tourism density index will deteriorate the environmental performance index. The …
Spatial-Temporal Patterns Of Modis Active Fire/Hotspots In Chiang Rai, Upper Northern Thailand And The Greater Mekong Subregion Countries During 2003-2015, Chidsanuphong Chart-Asa
Spatial-Temporal Patterns Of Modis Active Fire/Hotspots In Chiang Rai, Upper Northern Thailand And The Greater Mekong Subregion Countries During 2003-2015, Chidsanuphong Chart-Asa
Applied Environmental Research
For the past decade, smoke-haze pollution from forest fires and open burning has been a yearly recurring problem over Chiang Rai and other provinces in Upper Northern Thailand, along with other countries in the Greater Mekong Sub-region. Remote-sensing active fire/ hotspot data are currently used for monitoring the forest fires and open burning in the sub-region. This study aimed to extend the current monitoring work by performing spatial and temporal analysis to examine the patterns, either globally or locally, of MODIS active fires/hotspots during the critical smoke-haze pollution periods from January to April in 2003-2015. Fire radiative power was used …
Centuries Of Heat Waves Over India During 20th And 21st Century, Naveena Neelam, Gubbala C. Satyanerayana, Kotla S. Rao, Nandivada Umakantha, Dharma Raju
Centuries Of Heat Waves Over India During 20th And 21st Century, Naveena Neelam, Gubbala C. Satyanerayana, Kotla S. Rao, Nandivada Umakantha, Dharma Raju
Applied Environmental Research
An assessment of temperature extremes is made for the Indian subcontinent to identify the changes since 1951 to 2015, and for the future climate periods till 2100 for all the 21 CMIP5 (Coupled Model intercomparision Project phase 5) models and the representative concentration pathways RCP4.5 and RCP8.5 were examined for the period from 1 March to 31 May to characterize the heat waves in future climates and mean maximum and mean minimum bias were evaluated for the Indian subcontinent. Later two highest recorded temperature regions were chosen Northwest & Central India (NW&CIN) and only central India (CIN) box and the …
Source Contribution Of 1,3 Butadiene In The Vicinity Of Petrochemical Industrial Area, Nuttakit Sukjit, Sarawut Thepanondh, Suphaphat Kwonpongsagoon, Wanida ๋Jinsart, Lalidaporn Punya, Pattaranan Hanma
Source Contribution Of 1,3 Butadiene In The Vicinity Of Petrochemical Industrial Area, Nuttakit Sukjit, Sarawut Thepanondh, Suphaphat Kwonpongsagoon, Wanida ๋Jinsart, Lalidaporn Punya, Pattaranan Hanma
Applied Environmental Research
Emissions and ambient concentrations of 1,3 butadiene released from the synthetic rubber industries in the largest petroleum and petrochemical complex in Thailand were evaluated in this study. The industrial emissions in this analysis were those emitted from process fugitive, combustion stack, flare, and wastewater treatment facility. It was found that wastewater treatment units were the largest emission source among other potential sources. The contribution of emission from wastewater treatment plants were about 92% of total 1,3 butadiene emission. The extent and magnitude of 1,3 butadiene in ambient air were further evaluated through the simulation of AERMOD dispersion model using these …
Land Cover Classification Based On Uav Photogrammetry And Deep Learning For Supporting Mine Reclamation: A Case Study Of Mae Moh Mine In Lampang Province, Thailand, Tejendra K. Yadav, Polpreecha Chidburee, Nattapon Mahavik
Land Cover Classification Based On Uav Photogrammetry And Deep Learning For Supporting Mine Reclamation: A Case Study Of Mae Moh Mine In Lampang Province, Thailand, Tejendra K. Yadav, Polpreecha Chidburee, Nattapon Mahavik
Applied Environmental Research
Detailed, accurate, and frequent mapping of land cover are the prerequisite regarding areas of reclaimed mines and the development of sustainable project-level for goals. Mine reclamation is essential as the extractive organizations are bounded by-laws that have been established by stakeholders to ensure that the mined areas are properly restored. As databases at the mines area become outdated, an automated process of upgrading is needed. Currently, there are only few studies regarding mine reclamation which has less potential of land cover classification using Unmanned Aerial Vehicle (UAV) photogrammetry with Deep learning (DL). This paper aims to employ the classification of …
Quantifying Avoidable Food Waste And Identifying Its Underlying Causes: A Case Study Of A University Dormitory In Thailand, Shimpei Iwasaki, Suphat Prasopsin, Thamarat Phutthai
Quantifying Avoidable Food Waste And Identifying Its Underlying Causes: A Case Study Of A University Dormitory In Thailand, Shimpei Iwasaki, Suphat Prasopsin, Thamarat Phutthai
Applied Environmental Research
To develop well-planned and effective policies and programs for reducing avoidable food waste, it is important to quantify the actual food waste level in particular settings and assess relationships among consumers’ awareness, attitudes, and behaviors. Recognizing these considerations, this paper measured avoidable food waste generated by university students living in dormitory buildings and identified its underlying causes in the case of Kanchanaburi campus, Mahidol University, Thailand. The study applied a food waste composition survey 18 times between January and May 2019 while administering questionnaires in October 2019 to the dormitory students. Based on these measures, the study identified 1,417 instances …
Why Should Different City Characteristics Customize The Rate Of Pollution Charge? Evidence Of Factors Affecting Willingness-To-Pay For Wastewater Management In Thailand, Kwanmanas Meethavorn, Chanathip Pharino
Why Should Different City Characteristics Customize The Rate Of Pollution Charge? Evidence Of Factors Affecting Willingness-To-Pay For Wastewater Management In Thailand, Kwanmanas Meethavorn, Chanathip Pharino
Applied Environmental Research
A challenge for wastewater management is enhancing the efficiency of resource allocation. Polluter Pays Principle is a wastewater charge collection approach that could help support the financial burden faced by many countries. Tailor-made policy implementation based on city characteristics is critical to the success of implementing a national policy to fit well in different local contexts. This study examined gaps for improving municipal wastewater management systems in Thailand through in-depth interviews and a questionnaire survey to identify the factors influencing households’ perception and willingness to pay in three different cities. A contingent variation method technique was used to evaluate the …
Fire Drivers Affecting Forest Fire Occurrences In The Tropical Mixed Broad-Leaved Forests Of Nepal, Krishna Bahadur Bhujel, Rejina Maskey Byanju, Ambika P. Gautam, Ramesh Prasad Sapkota, Udhab Raj Khadka
Fire Drivers Affecting Forest Fire Occurrences In The Tropical Mixed Broad-Leaved Forests Of Nepal, Krishna Bahadur Bhujel, Rejina Maskey Byanju, Ambika P. Gautam, Ramesh Prasad Sapkota, Udhab Raj Khadka
Applied Environmental Research
Forest fires triggered by various natural and anthropogenic drivers are increasing and threatening forest ecosystems across the globe. In Nepal, the high value Tropical Mixed Broad-leaved Forests are prone to fire caused by both natural and anthropogenic drivers. Thus, understanding fire drivers and their effect is important for the sustainable forest fire management. However, the preceding studies on forest specific fire drivers and their effect are limited. This research has identified the fire drivers and assessed their effect to fire occurrences in the Tropical Mixed Broad-leaved Forests of Nawalparasi District, Nepal. Fire drivers were identified and prioritized by participatory approaches. …
Life Cycle Assessment Of Ethiopian Cement Manufacturing: A Potential Improvement On The Use Of Fossil Fuel In Mugher Cement Factory, Lemma Beressa, Battula Vijaya Saradhi
Life Cycle Assessment Of Ethiopian Cement Manufacturing: A Potential Improvement On The Use Of Fossil Fuel In Mugher Cement Factory, Lemma Beressa, Battula Vijaya Saradhi
Applied Environmental Research
The use of imported fuel in the Ethiopian cement industry increased the cost of production and the environmental burden, necessitating intervention. The greenhouse gas (GHG) emission, energy usage intensity, and resource exploitation of Ethiopian cement production were evaluated using the life cycle impact assessment (LCA) tool, aiming to recommend improvements. The LCA study used cumulative energy demand (CED) and Intergovernmental Panel on Climate Change (IPCC) 2006 life cycle impact assessment (LCIA) methods. For the case study of Mugher cement factory (MCF), the results on energy use intensities showed 3.74, 3.67, and 2.64 GJ/ton of clinker, Ordinary Portland cement (OPC), Pozzolana …
Characterization Of Pm2.5 - Bound Polycyclic Aromatic Hydrocarbons In Chiang Mai, Thailand During Biomass Open Burning Period Of 2016, Duangduean Thepnuan, Somporn Chantara
Characterization Of Pm2.5 - Bound Polycyclic Aromatic Hydrocarbons In Chiang Mai, Thailand During Biomass Open Burning Period Of 2016, Duangduean Thepnuan, Somporn Chantara
Applied Environmental Research
Polycyclic aromatic hydrocarbons (PAHs) bounded to ambient fine particles (PM2.5) were determined for enabling health risk assessment and source identification of ambient aerosols. Daily PM2.5 samples (24 h) were collected on quartz fiber filters by using a low volume air sampler (16.7 L min-1) during smoke haze period (March - April 2016) in Chiang Mai, Thailand. An average concentration of PM2.5(n=54) was 65.3±17.6 μg m-3. The samples were extracted with dichloromethane using ultrasonication prior to PAHs analysis by GC-MS. Average concentrations of 16-PAHs, non-carcinogenic (nc) PAHs and carcinogenic (c) PAHs were 10.23±2.49, 5.48±1.70 and 4.75±1.43 ng m-3, respectively. Ratio values …
Potential Degradation And Kinetics Of Melanoidin By Using Laccase From White Rot Fungus, Wittawat Toomsan, Pinthita Mungkarndee, Sophon Boonlue, Nguyen Thanh Giao, Sumana Siripattanakul-Ratpukdi
Potential Degradation And Kinetics Of Melanoidin By Using Laccase From White Rot Fungus, Wittawat Toomsan, Pinthita Mungkarndee, Sophon Boonlue, Nguyen Thanh Giao, Sumana Siripattanakul-Ratpukdi
Applied Environmental Research
This study was attempted to use laccase extracted from white rot fungus to removemelanoidin in the ethanol production wastewater. The isolated fungus producing the highest laccase was identified as Megaspororiasp. The highest degradation efficiencies of the purified and crude laccases were 48.00% and 44.60%, respectively. Both degradation kinetics well fit Michaelis-Menten model. The Michaelis constant (Km) and maximum rate of reaction (Vmax) were 0.82% melanoidin and 0.0045% melanoidin h-1 for the degradation by the purified laccase and 0.71% melanoidin and 0.0037% melanoidin h-1 for the degradation by the crude laccase. Turnover number (Kcat) of purified and crude laccases were 0.00023 …