Characteristics of phosphate adsorption onto granulated coal ash in seawater
Marine Pollution Bulletin 60 巻 8 号
1188-1192 頁
2010-08 発行
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タイトル ( eng ) |
Characteristics of phosphate adsorption onto granulated coal ash in seawater
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作成者 | |
収録物名 |
Marine Pollution Bulletin
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巻 | 60 |
号 | 8 |
開始ページ | 1188 |
終了ページ | 1192 |
抄録 |
The deterioration of sediments is a serious environmental problem. Controlling nutrient release fluxes from sediments is important to alleviating eutrophication and to reducing terrigenous nutrient loads. The purpose of this study was to evaluate the phosphate removal performance of granulated coal ash (GCA) from seawater, which is produced from coal thermal electric power generation. Batch experiments were carried out to investigate the removal kinetics of phosphate from seawater under both oxic and anoxic conditions. Phosphate was removed well from seawater under both oxic and anoxic conditions. The adsorption isotherm for phosphate revealed that GCA could remove phosphate effectively from seawater above a concentration of 1.7 mu mol L-1. GCA can reduce the concentration of phosphate in seawater effectively under anoxic conditions where iron type adsorbents cannot be applied. Therefore, GCA could potentially be used to adsorb phosphate in the organically-enriched sediment, which generally occurs under highly reductive conditions.
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著者キーワード |
Adsorption
Calcium phosphate
Coal ash
Eutrophication
Phosphate
Sediment
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NDC分類 |
地球科学・地学・地質学 [ 450 ]
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言語 |
英語
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資源タイプ | 学術雑誌論文 |
出版者 |
Pergamon Elsevier Science Ltd
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発行日 | 2010-08 |
権利情報 |
Copyright (c) 2010 Elsevier Ltd
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出版タイプ | Author’s Original(十分な品質であるとして、著者から正式な査読に提出される版) |
アクセス権 | オープンアクセス |
収録物識別子 |
[ISSN] 0025-326X
[DOI] 10.1016/j.marpolbul.2010.03.032
[NCID] AA00721620
[DOI] http://dx.doi.org/10.1016/j.marpolbul.2010.03.032
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