{"title":"Heavy Metal Concentration and Risk Assessment of Soil and Rice in and around an Open Dumpsite in Thailand","authors":"Tanjira Klinsawathom, Benjaphorn Songsakunrungrueng, Preprame Pattanamahakul","doi":"10.14456/EA.2017.21","DOIUrl":"https://doi.org/10.14456/EA.2017.21","url":null,"abstract":"","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"10 1","pages":"53-64"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42013421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Hafizal, Wan LimWan, Kai PhangRen, M. T. Latif, N. Kannan
Distribution of 10 polycyclic aromatic hydrocarbons (PAHs) in the gas phase of air from selected indoor and outdoor areas of Selangor and Malacca, Malaysia has been investigated. A locally designed Semi Permeable Membrane Device (SPMD) was applied for passive air sampling for 37 days at selected locations. Cleanup was carried out with Gas Purge Micro Syringe Extraction (GP-MSE) and the final analysis was using Gas Chromatography-Mass Spectrometry (GC-MS). In this study, 6 indoor and 12 outdoor locations were selected for air sampling. A total of 10 compounds of PAHs (Ʃ10PAHs) were determined in the range of 0.218 ng/m 3 1.692 ng/m and 0.378 ng/m 1.492 ng/m in outdoor and indoor samples respectively. In the outdoor samples, locations such as near a petrol station and heavy traffic showed the maximum levels of Ʃ10PAHs, while rooftop samples showed the lowest Ʃ10PAHs. The distribution of gas phase Ʃ10PAHs was influenced by vehicular emission. Low molecular weight (LMW) compounds (2-3 rings) were dominant in all samples (>70%) indicating that SPMD has successfully sampled the gas phase of the air.
{"title":"Distribution of gas phase polycyclic aromatic hydrocarbons (PAHs) in selected indoor and outdoor air samples of Malaysia: a case study in Serdang, Selangor and Bachang, Malacca.","authors":"A. Hafizal, Wan LimWan, Kai PhangRen, M. T. Latif, N. Kannan","doi":"10.14456/EA.2017.23","DOIUrl":"https://doi.org/10.14456/EA.2017.23","url":null,"abstract":"Distribution of 10 polycyclic aromatic hydrocarbons (PAHs) in the gas phase of air from selected indoor and outdoor areas of Selangor and Malacca, Malaysia has been investigated. A locally designed Semi Permeable Membrane Device (SPMD) was applied for passive air sampling for 37 days at selected locations. Cleanup was carried out with Gas Purge Micro Syringe Extraction (GP-MSE) and the final analysis was using Gas Chromatography-Mass Spectrometry (GC-MS). In this study, 6 indoor and 12 outdoor locations were selected for air sampling. A total of 10 compounds of PAHs (Ʃ10PAHs) were determined in the range of 0.218 ng/m 3 1.692 ng/m and 0.378 ng/m 1.492 ng/m in outdoor and indoor samples respectively. In the outdoor samples, locations such as near a petrol station and heavy traffic showed the maximum levels of Ʃ10PAHs, while rooftop samples showed the lowest Ʃ10PAHs. The distribution of gas phase Ʃ10PAHs was influenced by vehicular emission. Low molecular weight (LMW) compounds (2-3 rings) were dominant in all samples (>70%) indicating that SPMD has successfully sampled the gas phase of the air.","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"10 1","pages":"80-85"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44683115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Integration of GIS-based model with epidemiological data as a tool for dengue surveillance","authors":"N. C. Dom, A. H. Ahmad, Z. Latif, R. Ismail","doi":"10.14456/EA.2017.29","DOIUrl":"https://doi.org/10.14456/EA.2017.29","url":null,"abstract":"","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"10 1","pages":"135-146"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45408341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Noophan, Supaporn Phanwilai, T. Kasahara, J. Munakata-Marr, L. Figueroa
Four full-scale systems wastewater treatment plants (WWTPs) were used as study sites. All of these WWTPs were designed and operated for biological nitrogen removal (BNR) by using nitrification-denitrification processes. In general, the WWTPs in Thailand operated at higher values of temperature, HRT and SRT. Influents and effluents from these sites are compared and discussed in terms of BNR, dominant nitrifying microorganisms and WWTP design. Nitrogen removal was observed in all the sites and correlated to the influent total N (TN) to BOD ratio. Polymerase chain reaction coupled with denaturing gradient gel electrophoresis was used to identify dominant bacteria involved in nitrogen transformations: ammonia-oxidizing bacteria (AOB), nitrite-oxidizing bacteria (NOB), and nitrate reducing bacteria (NRB). AOB Nitrosomonas sp. was found only in Thailand where aerobic HRT was ≥ 4 hours and SRT was ≥15 days. Furthermore, AOB Nitrosospira sp. were found only in Japan at aerobic HRT ≤ 4 hours and SRT≤ 13 temperature (21-27°C). NOB Nitrospira sp. was found at aerobic HRT ≥ 4 hours and SRT ≥ 6 days. Interestingly, Nitrotoga sp. was found in the aerobic tank one in Thailand and one in Japan and co-occurred with NRB Burkholderia denitrificans. The higher wastewater temperature and lower influent nitrogen concentration in Thailand appear to promote a different AOB and NOB community structure than in Japan. The most important factor affecting TN removal was the influent TN to BOD ratio.
{"title":"Comparison of nitrogen removal and full-scale wastewater treatment plant characteristics in Thailand and Japan","authors":"P. Noophan, Supaporn Phanwilai, T. Kasahara, J. Munakata-Marr, L. Figueroa","doi":"10.14456/EA.2017.11","DOIUrl":"https://doi.org/10.14456/EA.2017.11","url":null,"abstract":"Four full-scale systems wastewater treatment plants (WWTPs) were used as study sites. All of these WWTPs were designed and operated for biological nitrogen removal (BNR) by using nitrification-denitrification processes. In general, the WWTPs in Thailand operated at higher values of temperature, HRT and SRT. Influents and effluents from these sites are compared and discussed in terms of BNR, dominant nitrifying microorganisms and WWTP design. Nitrogen removal was observed in all the sites and correlated to the influent total N (TN) to BOD ratio. Polymerase chain reaction coupled with denaturing gradient gel electrophoresis was used to identify dominant bacteria involved in nitrogen transformations: ammonia-oxidizing bacteria (AOB), nitrite-oxidizing bacteria (NOB), and nitrate reducing bacteria (NRB). AOB Nitrosomonas sp. was found only in Thailand where aerobic HRT was ≥ 4 hours and SRT was ≥15 days. Furthermore, AOB Nitrosospira sp. were found only in Japan at aerobic HRT ≤ 4 hours and SRT≤ 13 temperature (21-27°C). NOB Nitrospira sp. was found at aerobic HRT ≥ 4 hours and SRT ≥ 6 days. Interestingly, Nitrotoga sp. was found in the aerobic tank one in Thailand and one in Japan and co-occurred with NRB Burkholderia denitrificans. The higher wastewater temperature and lower influent nitrogen concentration in Thailand appear to promote a different AOB and NOB community structure than in Japan. The most important factor affecting TN removal was the influent TN to BOD ratio.","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"10 1","pages":"92-98"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66672751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Yahaya, N. A. Ghazali, Sabri Ahmad, M. A. M. Asri, Z. Ibrahim, N. Ramli
{"title":"Analysis of Daytime and Nighttime Ground Level Ozone Concentrations Using Boosted Regression Tree Technique","authors":"N. Yahaya, N. A. Ghazali, Sabri Ahmad, M. A. M. Asri, Z. Ibrahim, N. Ramli","doi":"10.14456/ea.2017.14","DOIUrl":"https://doi.org/10.14456/ea.2017.14","url":null,"abstract":"","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"10 1","pages":"118-129"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66672809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sirikul Siriraksophon, C. Musikavong, C. Suksaroj, T. Suksaroj
{"title":"Evolution of Pretreatment Methods for Nanofiltration Membrane Used for Dissolved Organic Matter Removal in Raw Water Supply","authors":"Sirikul Siriraksophon, C. Musikavong, C. Suksaroj, T. Suksaroj","doi":"10.14456/EA.2016.3","DOIUrl":"https://doi.org/10.14456/EA.2016.3","url":null,"abstract":"","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"9 1","pages":"10-17"},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66672722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Household Level Analysis of Water Sanitation Associated with Gastrointestinal Disease in an Urban Slum Setting of South Okkalapa Township, Myanmar","authors":"Z. Hlaing, A. Mongkolchati, C. Rattanapan","doi":"10.14456/EA.2016.12","DOIUrl":"https://doi.org/10.14456/EA.2016.12","url":null,"abstract":"","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"51 1","pages":"91-100"},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66672688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Solid Waste Transportation through Ocean Currents: Marine Debris Sightings and their Waste Quantification at Port Dickson Beaches, Peninsular Malaysia","authors":"Chong Yi, N. Kannan","doi":"10.14456/EA.2016.6","DOIUrl":"https://doi.org/10.14456/EA.2016.6","url":null,"abstract":"","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"9 1","pages":"39-47"},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66672734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Werenfridus Taena, L. Kolopaking, B. Juanda, B. Barus, R. Boer
{"title":"Evaluating Impact of Land Use Changes and Climate Variability on Economic Efficiency of Farming in Transboundary Watershed of Timor Island","authors":"Werenfridus Taena, L. Kolopaking, B. Juanda, B. Barus, R. Boer","doi":"10.14456/ea.2016.15","DOIUrl":"https://doi.org/10.14456/ea.2016.15","url":null,"abstract":"","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"9 1","pages":"118-127"},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66672699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Households’ Natural Disaster Preparedness: A View from a Second Class Municipality in a Developing Country","authors":"R. T. Bagarinao","doi":"10.14456/EA.2016.20","DOIUrl":"https://doi.org/10.14456/EA.2016.20","url":null,"abstract":"","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"9 1","pages":"158-164"},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66672711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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