https://scholars.lib.ntu.edu.tw/handle/123456789/351395
標題: | The effectiveness of four organic matter amendments for decreasing resin-extractable Cr(VI) in Cr(VI)-contaminated soils | 作者: | Chiu, C.-C. Cheng, C.-J. Lin, T.-H. Juang, K.-W. DAR-YUAN LEE |
關鍵字: | Cr(VI) reduction; Organic materials; Resin-extractable Cr(VI); X-ray absorption near-edge structure spectroscopy (XANES) | 公開日期: | 2009 | 卷: | 161 | 期: | 2-3 | 起(迄)頁: | 1239-1244 | 來源出版物: | Journal of Hazardous Materials | 摘要: | This paper compared the effectiveness of four organic materials for decreasing the amounts of soil extractable Cr(VI) in Cr(VI)-contaminated soils using the DOWEX M4195 resin-extraction method. Organic matters were added into Cr(VI)-spiked soils [500 mg Cr(VI) (kg soil)-1] in the form of sugarcane dregs compost (SCDC), cattle-dung compost (CDC), soybean meal (SBM) and rice bran (RB), in the amounts of 0, 1%, and 2% by dry weight, respectively. The results indicated that adding only 1% organic matter to the studied soils could effectively decrease the amount of soil resin-extractable Cr(VI) after 12 days of incubation. The decrease of resin-extractable Cr(VI) by organic materials was mainly the result from the reduction of Cr(VI) to Cr(III) supported by the XANES spectroscopy. Among the four tested organic materials, SBM and RB had higher effectiveness in decreasing soil resin-extractable Cr(VI) than CDC and SCDC. This result may be due to the fact that SBM and RB have more dissolved organic carbon (DOC) and protein than CDC and SCDC. Therefore, it was concluded that the contents of DOC and protein are the main factors that determine the effectiveness of organic materials for decreasing the amounts of soil available Cr(VI) in Cr(VI)-contaminated soils. © 2008 Elsevier B.V. All rights reserved. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-56249083519&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/351395 |
DOI: | 10.1016/j.jhazmat.2008.04.081 | SDG/關鍵字: | ABS resins; Absorption spectroscopy; Biogeochemistry; Biological materials; Chromium; Composting; Contamination; Dissolution; Fire hazards; Organic carbon; Organic compounds; Resins; Soil pollution; Soils; Vegetation; X ray absorption near edge structure spectroscopy; X ray analysis; Contaminated soils; Cr(VI) reduction; Dissolved organic carbons; Dry weights; Extraction methods; Main factors; Organic materials; Organic matters; Rice brans; Soybean meals; Spiked soils; X-ray absorption near-edge structure spectroscopy (XANES); XANES spectroscopies; Chromium compounds; chromium; organic matter; resin; chromium; compost; extraction method; organic matter; protein; reduction; resin; soil amendment; soil pollution; sugar cane; XANES spectroscopy; article; compost; reduction; rice bran; roentgen spectroscopy; soil pollution; soybean; Animals; Calibration; Cattle; Chemistry, Analytical; Chemistry, Organic; Chromium; Environmental Pollution; Kinetics; Manure; Organic Chemicals; Soil; Soil Pollutants; Soybeans; Spectrometry, X-Ray Emission; Time Factors; Bos; Glycine max |
顯示於: | 農業化學系 |
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