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Biodegradation of poly(lactic acid), poly(hydroxybutyrate-co-hydroxyvalerate), poly(butylene succinate) and poly(butylene adipate-co-terephthalate) under anaerobic and oxygen limited thermophilic conditions 厌氧和限氧条件下的聚乳酸、聚羟基丁酸酯-共羟基戊酸酯、聚丁二酸丁二酯和聚己二酸丁二酯-共对苯二甲酸乙酯的生物降解
EnvironmentAsia Pub Date : 2016-01-01 DOI: 10.14456/ea.1473.13
J. Boonmee, C. Kositanont, T. Leejarkpai
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引用次数: 9
Effects of air pollution related respiratory symptoms in school children in industrial areas Rayong, Thailand 空气污染对工业区学龄儿童呼吸道症状的影响
EnvironmentAsia Pub Date : 2016-01-01 DOI: 10.14456/EA.1473.14
Paradee Asa, W. Jinsart
{"title":"Effects of air pollution related respiratory symptoms in school children in industrial areas Rayong, Thailand","authors":"Paradee Asa, W. Jinsart","doi":"10.14456/EA.1473.14","DOIUrl":"https://doi.org/10.14456/EA.1473.14","url":null,"abstract":"The chronic effects of air pollution in school children living near industrial sites were investigated. There spiratory symptoms of 806 school children aged 9-12 years were examined by the American Thoracic Society’s Division of Lung Diseases (ATS-DLD-78-C) questionnaire during February-August 2013. The selected elementary schools in this survey was based on the distance from Map Ta Phut Industrial Estate, area A within 1 km., area B 5 km. and area C 10 km. Logistic regression techniques were used to assess the association between prevalence of respiratory symptoms and independent variables. The average 24 hrs PM10 and VOCs concentrations from 2011-2014 in area A were significantly higher than in area C (p<0.05). Relatively, the prevalence of respiratory symptoms in area A were high with odds ratios (OR) = 3.41, (95% confidence intervals (CI) = 1.70-6.85) and in area B with OR = 1.36, (95% CI = 0.54-3.45), in comparison to area C. The prevalent of non-specific respiratory diseases (NSRD) and Persistent Cough and Phlegm (PCP) in boy student were higher than girls students with OR=2.17, (95% CI=1.33-3.53), whereas those factors such as age, residential years, home size, parental smoking habits, use of air conditioners and domestic pets were not associated. Exposure to particulate matter and volatile organic compounds arising from Industrial sites was associated with worse respiratory impairments in children.","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"77 1","pages":"116-123"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66672651","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}
引用次数: 1
Biogas Production from Batch Anaerobic Co-Digestion of Night Soil with Food Waste 夜间土壤与食物垃圾分批厌氧共消化制沼气
EnvironmentAsia Pub Date : 2016-01-01 DOI: 10.14456/EA.1473.9
Assadawut Khanto, Peerakan Banjerdkij
{"title":"Biogas Production from Batch Anaerobic Co-Digestion of Night Soil with Food Waste","authors":"Assadawut Khanto, Peerakan Banjerdkij","doi":"10.14456/EA.1473.9","DOIUrl":"https://doi.org/10.14456/EA.1473.9","url":null,"abstract":"The objective of this study is to investigate the biogas production from Anaerobic Co-Digestion of Night Soil (NS) with Food Waste (FW). The batch experiment was conducted through the NS and FW with a ratio of 70:30 by weight. The experiment is mainly evaluated by the characteristic of Co-Digestion and Biogas Production. In addition of food waste was inflating the COD loading from 17,863 to 42,063 mg/l which is 135 % increased. As the result, it shows that pH has dropped off in the beginning of 7-day during digestion and it was slightly increased into the range of optimum anaerobic condition. After digestion of the biogas production was 2,184 l and 56.5 % of methane fraction has obtained within 31 days of experimentation. The investigation of Biochemical Methane Potential (BMP) and Specific Methanogenic Activities (SMA) were highly observed. And the results were obtained by 34.55 mLCH4/gCODremoval and 0.38 gCH4-COD/gVSS-d. While the average COD removal from the 4 outlets got 92%, 94%, 94 % and 92 % respectively. However, the effluent in COD concentration was still high and it needs further treatment before discharge.","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"9 1","pages":"77-83"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66672668","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}
引用次数: 2
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