International Journal of Environmental Protection最新文献

Assessment of the Water Quality of the Radika River in the National Park Mavrovo in the Republic of Macedonia 马其顿共和国马夫罗沃国家公园内拉迪卡河水质评价

International Journal of Environmental Protection Pub Date : 2018-12-30 DOI: 10.5963/ijep0801001

K. Pavlov, R. Bojkovska, G. Pavlovski

引用次数: 0

Granulated Coal Ash-Used Filter Design for Efficient Removal of Nutrient Salts 高效去除营养盐的粉煤灰滤池设计

International Journal of Environmental Protection Pub Date : 2018-12-30 DOI: 10.5963/IJEP0801004

N. Touch, H. Takata, Manaka Okabe, Y. Morimoto, T. Hibino

引用次数: 0

Baseline Levels of Polybrominated Diphenyl Ethers (PBDEs) in Water and Sediment from River Benue, North Central Nigeria 尼日利亚中北部贝努埃河水和沉积物中多溴联苯醚的基线水平

International Journal of Environmental Protection Pub Date : 2018-12-30 DOI: 10.5963/IJEP0801002

S. Tongu, R. Sha’Ato, J. Okonkwo, O. Olukunle, I. Eneji, Terrumun T. Tor-Anyiin

{"title":"Baseline Levels of Polybrominated Diphenyl Ethers (PBDEs) in Water and Sediment from River Benue, North Central Nigeria","authors":"S. Tongu, R. Sha’Ato, J. Okonkwo, O. Olukunle, I. Eneji, Terrumun T. Tor-Anyiin","doi":"10.5963/IJEP0801002","DOIUrl":"https://doi.org/10.5963/IJEP0801002","url":null,"abstract":"Polybrominated diphenyl ethers (PBDEs) have been recognised as persistent organic pollutants (POPs) and are also among chemicals classified as endocrine-disrupting compounds (EDCs) which interfere with the endocrine system and disrupt the physiological function of hormones in animals and humans alike. This study determined the concentrations of six PBDE congeners (BDE 47, BDE 99, BDE 100, BDE 153, BDE 154 and BDE 183) in water and sediment samples from River Benue, in the Makurdi Metropolitan Area in North Central Nigeria using gas chromatogragh – mass spectrometer. These congeners are components of the pentaand octaBDE formulations that have been banned by the European Union. The samples were collected from the River, bimonthly, for one year across dry and wet seasons. All the congeners considered were found to be present in both water and sediment. The levels of Σ6PBDEs in water ranged from 0.02 – 0.11 ngL _1 during dry season and 0.10 – 0.76 ngL during wet season while the concentrations in sediment during dry and wet seasons ranged from 4.65 – 26.74 ngg and 4.40 – 17.15 ngg respectively. The percentage recoveries from solid phase and Soxhlet extractions ranged from 68 – 111 % and 71 – 109 % respectively. It was concluded that the presence of all the congeners in both water and sediment coupled with their established environmental persistence and bioaccumulation posed a pollution risk to the river which requires further monitoring and preventive measures to be taken. KeywordsGas chromatograph – mass spectrometer; polybrominated diphenyl ethers; sediment; river water; Nigeria","PeriodicalId":250722,"journal":{"name":"International Journal of Environmental Protection","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115710913","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: 0

Improvement of Sediment and Water Quality with Solar Cell-Combined Sediment Microbial Fuel Cells in Oyster Farms 利用太阳能电池复合沉积物微生物燃料电池改善牡蛎养殖场沉积物和水质

International Journal of Environmental Protection Pub Date : 2018-12-30 DOI: 10.5963/ijep0801005

N. Touch, S. Yamaji, K. Nagama, T. Miyatsu, T. Hibino

引用次数: 0

Remediation of Sediment Deposited near Sewage Outlet with Solar Cell-Combined Sediment Microbial Fuel Cells 利用太阳能电池复合沉积物微生物燃料电池修复污水出口附近沉积物

International Journal of Environmental Protection Pub Date : 2018-12-30 DOI: 10.5963/IJEP0801003

N. Touch, S. Yamaji, Kaichi Nishimura, Y. Sunada, T. Hibino

{"title":"Remediation of Sediment Deposited near Sewage Outlet with Solar Cell-Combined Sediment Microbial Fuel Cells","authors":"N. Touch, S. Yamaji, Kaichi Nishimura, Y. Sunada, T. Hibino","doi":"10.5963/IJEP0801003","DOIUrl":"https://doi.org/10.5963/IJEP0801003","url":null,"abstract":"It has been reported that solar cell-combined sediment microbial fuel cell (SC-SMFC) can be an alternative option for remediating sediment. Near a sewage outlet, huge amount of sediment accumulation causes many environmental problems, such as malodor and the restriction of benthos inhabitation. This study aims to employ SC-SMFC for remediating sediment deposited near a sewage outlet. Particularly, we aim to determine the remediation range of sediment from the anode of SC-SMFC. SC-SMFC was applied into the sediment deposited on the riverbank of a tidal river, and the distribution of sediment quality from the anode was examined at 14 weeks after the employment of SC-SMFC. Decreases in hydrogen sulfide, phosphate, manganese, and ammonium ion concentrations were found, indicating the sediment remediation owing the SC-SMFC application. A larger decrease in each ion concentration was found near the anode. From the ion distributions, the sediment located between 0 and 1 m from the anode was strongly influenced by the SC-SMFC application, which was approximately 6.7-fold longer than that obtained from the laboratory experiment. At in-situ, water current that can transport substances to the anode and the biodiversity of microorganisms that can produce much of electrons may partly contribute to the increasing SC-SMFC performance, leading to the long range of sediment remediation. Furthermore, it is newly found out that ammonium and manganese ions are efficiently removed from sediment via the anode oxidation during the SC-SMFC application. KeywordsSolar Cell; Sediment Microbial Fuel Cell; Sediment Quality; Remediation Range; Hydrogen Sulfide, Ammonium","PeriodicalId":250722,"journal":{"name":"International Journal of Environmental Protection","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121636220","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: 0