Open Access. Powered by Scholars. Published by Universities.®

Social and Behavioral Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

2012

Environmental Studies

Chulalongkorn University

Articles 1 - 11 of 11

Full-Text Articles in Social and Behavioral Sciences

Indoor Air Pollution: Volatile Organic Compounds In Non-Industrial Microenvironments In Thailand, Maneerat Ongwandee Jul 2012

Indoor Air Pollution: Volatile Organic Compounds In Non-Industrial Microenvironments In Thailand, Maneerat Ongwandee

Applied Environmental Research

This paper was intended to review literature related to indoor air quality research conducted in Thailand during the past decade. The content was devoted to a certain indoor pollutant group which were volatile organic compounds (VOCs). VOCs were present indoors to a wide range of concentrations with a variety of chemical species. This paper discussed the VOC investigations designated to non-industrial microenvironments, which included workplaces, residences, and mass transit. Typically, levels of VOCs found in the nonindustrial microenvironments were significantly less than those found in industries. Although concentrations of VOCs in the non-industrial microenvironments may not be high enough to …

Go to article

Accumulation Of Heavy Metals In Mangrove Sediments Of Chumphon Province, Thailand, Nathsuda Pumijumnong, Bussarin Uppadit Jul 2012

Accumulation Of Heavy Metals In Mangrove Sediments Of Chumphon Province, Thailand, Nathsuda Pumijumnong, Bussarin Uppadit

Applied Environmental Research

The objective of this study was two-fold: to examine the heavy metal (Cd, Cu, Cr, Ni, Mn, Pb and Zn) levels that have accumulated in mangrove forest sediments in Chumphon Province, Thailand, and to determine the relationship between heavy metals and the physiochemical properties of sediment. The sediment was digested with HNO3 and HCl using a milestone microwave digestion system (model MLS-1200 MEGA), followed by the addition of 50 ml distilled water. The concentrations of Cu, Cr, Ni, Mn, and Zn in the filtered and digested samples were determined by air-acetylene flame atomic absorption spectrophotometry (FAAS, model Varian SpectrAA 220FS). …

Go to article

Effects Of Solution Ph And Ionic Strength For Removal Of Combined Natural Organic Matter And Copper (Ii) Ion By Membrane Nanofiltration, Pakasit Hongthong, Supatpong Mattaraj, Ratana Jiraratananon Jul 2012

Effects Of Solution Ph And Ionic Strength For Removal Of Combined Natural Organic Matter And Copper (Ii) Ion By Membrane Nanofiltration, Pakasit Hongthong, Supatpong Mattaraj, Ratana Jiraratananon

Applied Environmental Research

Effects of solution pH and ionic strength for removal of combined natural organic matter (NOM) and copper (II) through a nanofiltration (NF) membrane were investigated. Experimental results revealed that the influence of NOM and copper (II) ion on NF performance was dependent on solution chemistry (i.e. solution pH and ionic strength). For copper (II) ion, increased solution pHs exhibited greater flux decline, while there was no significant difference in flux for solutions containing NOM. Solutions containing copper (II) ion alone showed less flux decline than those containing NOM and combined NOM with copper (II ) ions. The ion rejections (based …

Go to article

Factors Affecting Energy Consumption For Traveling Of Households In Bangkok Metropolitan Area, Pattana Sirichotpundit, Chamlong Poboon, Duchduen Bhanthumnavin, Wisakha Phoochinda Jul 2012

Factors Affecting Energy Consumption For Traveling Of Households In Bangkok Metropolitan Area, Pattana Sirichotpundit, Chamlong Poboon, Duchduen Bhanthumnavin, Wisakha Phoochinda

Applied Environmental Research

This study aimed to examine factors affecting energy consumption for traveling of households in Bangkok metropolitan area. Data were collected by surveying 1,150 households in 15 districts of Bangkok Metropolitan Administration. The hypotheses were tested by multi regression analysis. Results of the analysis revealed that there were two factors significantly having positive effects on the quantity of energy use for traveling which were physical and structure factors and social and cultural factors. Suggestions for reducing energy use for traveling including promoting working close to living place, improving public transportation service, restricting private vehicle use in the inner zone, and keeping …

Go to article

Interposition Of Alien Structure In Aesthetic Value Of Ayuthaya Historical And Archaeological Ruin, Bundit Pradabsook, Kasem Chunkao, Surat Bualert Jul 2012

Interposition Of Alien Structure In Aesthetic Value Of Ayuthaya Historical And Archaeological Ruin, Bundit Pradabsook, Kasem Chunkao, Surat Bualert

Applied Environmental Research

Aesthetic value damage evaluation on archaeological ruins was a difficult issue to address due to the public perception that it was a subjective issue. Interposition of alien structures at archaeological sites was commonly seen and caused adverse visual impacts and affected the conservation of arts and cultural heritage of the Kingdom of Thailand. There were currently no means to determine the damage of archaeological sites by interposed alien structures, thus, it was difficult to identify criteria which was needed to protect the aesthetic beauty of historical, architectural, and archaeological sites. In order to establish a method of measuring aesthetic damage …

Go to article

Assessment Of Surface Water Quality Parameters And Their Variations For Effective River Monitoring System: A Case Study Of U-Tapao River Basin, Saroj Gyawali, Kuaanan Techato, Chumpol Yuangyai, Sathaporn Monprapussorn Jul 2012

Assessment Of Surface Water Quality Parameters And Their Variations For Effective River Monitoring System: A Case Study Of U-Tapao River Basin, Saroj Gyawali, Kuaanan Techato, Chumpol Yuangyai, Sathaporn Monprapussorn

Applied Environmental Research

Water pollution has become an alarming threat to human society and natural ecosystems. Evaluation of water quality and its variations is essential for water quality management. This study aimed to analyze the spatial and temporal variations of water quality parameters and their interrelationship to support the current water quality monitoring system of U-tapao river. The data of physico-chemical and biological parameters namely: temperature, pH, electrical conductivity, suspended solid, turbidity, biological oxygen demand, dissolved oxygen, ammonia, and fecal coliform bacteria were collected from twenty-one monitoring stations of the basin from year 2004 to 2011. Analysis of variance, correlation analysis, and principal …

Go to article

Removal Of Lead By Using Na-A Zeolite Synthesized From Spent Silica-Alumina, Pimonpan Uttapan, Petchporn Chawakitchareon, Dawan Wiwattanadate Jan 2012

Removal Of Lead By Using Na-A Zeolite Synthesized From Spent Silica-Alumina, Pimonpan Uttapan, Petchporn Chawakitchareon, Dawan Wiwattanadate

Applied Environmental Research

This research was carried out in order to investigate the adsorption efficiency of lead removal using sodalite and Na-A zeolite synthesized from spent silica - alumina. The starting material composition used in this experiment was: Al2O3: 1.926 SiO2: 3.165 Na2O: 128 H2O. The optimum condition used to synthesize zeolite was at 90 oC for 4 hr. The experiment was carried out by using sodalite and Na-A zeolite as an adsorbent for removing lead from aqueous solution. The adsorption was carried out in batch experiment. The results indicated that the optimum condition of sodalite and Na-A zeolite for lead adsorption was …

Go to article

Utilization Of Silica Waste To Replace Silica Fume For Mixed Mortar, Petchporn Chawakitchareon, Natthapol Sresthaolarn Jan 2012

Utilization Of Silica Waste To Replace Silica Fume For Mixed Mortar, Petchporn Chawakitchareon, Natthapol Sresthaolarn

Applied Environmental Research

This research investigated the utilization of silica waste to replace the imported condensed silica fume for the production of ready mixed mortar. The silica waste was classified using sieve analysis procedures in order to achieve a high degree of fineness with a spherical shape and average particle size of 3.2 microns. Classified silica waste was used to replace 10 % volume content weight of Type I Portland cement to produce ready mixed mortar. In addition, the samples of condensed silica fume obtained from a representative supplier were also used to produce ready mixed mortar by replacing 10 % cement by …

Go to article

Carbon Footprint Of An Academic Organization: A Case Study Of The Department Of Environmental Of Environmental Engineering, Chulalongkorn University, Boonjira Janangkakan, Orathai Chavalparit, Premrudee Kanchanapiya Jan 2012

Carbon Footprint Of An Academic Organization: A Case Study Of The Department Of Environmental Of Environmental Engineering, Chulalongkorn University, Boonjira Janangkakan, Orathai Chavalparit, Premrudee Kanchanapiya

Applied Environmental Research

This paper presented the carbon footprint evaluation of an academic institution, direct and indirect greenhouse gas (GHG) emissions were calculated. The major sources of GHG emissions were classified into four main categories, which were energy use, materials use, transportation, and waste (wastewater treatment and solid waste disposal). The aim of this research was to evaluate the GHG emissions of the Department of Environmental Engineering, Chulalongkorn University and to develop alternative options for reduction of the GHG emissions using the Life Cycle Assessment Methodology as a key factor. The result showed that the total carbon footprint of the department based on …

Go to article

Phytoplankton Community In Cage Culture Farm Areas In The Andaman Coast Of Thailand, Suwat Tanyaros, David Crookall Jan 2012

Phytoplankton Community In Cage Culture Farm Areas In The Andaman Coast Of Thailand, Suwat Tanyaros, David Crookall

Applied Environmental Research

Fish excretory products from cage culture farms combine with nutrients released from the breakdown of excess feed to raise nutrient levels well above normal, creating an ideal environment for phytoplankton blooms. This study was carried out in the Andaman Coast of Thailand to elucidate (a) the impact of cage farms on phytoplankton production, and (b) how water quality affects the phytoplankton community in the area. Phytoplankton and water quality were monitored in cage culture farms from April 2007 to May 2008 in four provinces, (Phang-nga, Krabi, Trang and Satun) along the coast of the Andaman Sea, in southern Thailand. Phytoplankton …

Go to article

Environmental Performance Of Marble Tile Life Cycle, Nachawit Tikul Jan 2012

Environmental Performance Of Marble Tile Life Cycle, Nachawit Tikul

Applied Environmental Research

Accurate data and information about life cycle environmental impacts of building materials are critical for environmental-friendly building design. This paper reports the findings of environmental impacts assessment of marble tiles produced in Thailand. The life cycle assessment (LCA) approach was employed and the ecoindicator 95 methodology was used in the assessment. Six impact categories were assessed; global warming, acidification, ozone depletion, eutrophication, winter smog, and summer smog. The results show that manufacturing phase contributes the highest impacts compared with other phases of the marble tile life cycle, and the block cutting process is the greatest contributor. Transportation of finished products …

Go to article