PMID: 15382870Sep 24, 2004Paper

Intercorrelations among degree of geochemical alterations, physicochemical properties, and organic sorption equilibria of kerogen

Environmental Science & Technology
Chen YangGuoying Sheng

Abstract

Recent studies reported that kerogen is an important natural organic material dominating sorption of relatively hydrophobic organic contaminants (HOCs) by topsoils and river sediments collected from industrialized regions. Due to its chemical and structural heterogeneity, kerogen is expected to exhibit a spectrum of sorptive phenomena for HOCs. The goal of this study is to establish correlations between heterogeneous physicochemical properties of kerogen and its sorptive characteristics for HOCs. In this study, we simulated diagenetic alterations under laboratory conditions by thermally treating a low-grade lignite at 200, 250, 300, 350, 400, 450, and 500 degrees C, yielding a series of type III kerogen samples having the same parental material but different maturations and physicochemical properties. The treated samples and the original lignite were systematically characterized using different methods and were used as the sorbents for sorption equilibrium study. The results of characterization revealed that black carbon or charwas formed at 450 degrees C or above and that, as the treatment temperature (T) increases, both O/C and H/C atomic ratios decrease whereas aromaticity and reflectance index increase. The sorption and des...Continue Reading

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Citations

Aug 4, 2010·Environmental Science and Pollution Research International·Weixiao QiWei Xu
Oct 9, 2009·International Journal of Phytoremediation·Elizabeth Guthrie Nichols, Jennifer Musella
Nov 8, 2013·Environmental Science and Pollution Research International·Xuetao GuoZhi Dang
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May 19, 2009·Chemosphere·Liyuan HuangBaoshan Xing
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Nov 23, 2006·Journal of Hazardous Materials·Hong-Wen Sun, Qi-She Yan
Jul 15, 2006·Journal of Hazardous Materials·Hui-Chen HuangJiunn-Chen Chen
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Jan 11, 2012·Environmental Pollution·D KupryianchykA A Koelmans
Mar 23, 2011·Environmental Toxicology and Chemistry·Xin ShiDongqiang Zhu
Mar 17, 2011·Environmental Science & Technology·Julia SullivanRainer Lohmann

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