Characteristics and factors influencing Pb(II) desorption from a Chinese clay by citric acid
Characteristics and factors influencing Pb(II) desorption from a Chinese clay by citric acid
复制标题
柠檬酸解吸中国粘土中 Pb(II) 的特性及影响因素
DOI:
10.1080/01496395.2016.1216128
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发表时间:
2016-08
影响因子:
2.8
通讯作者:
Liu, Yang
中科院分区:
文献类型:
--
作者:
Chu, Jiaming;Wang, Yan;Zhou, Ting;Liu, Yang
ABSTRACT Soil contamination by heavy metals has attracted worldwide attention, since its highly toxicity and potential threaten to the human health. Thus, in this study, the desorption behaviors of Pb(II) by citric acid from a Chinese clay were evaluated. According to the results, Pb(II) removal percentage reached around 60% within 2 h. The acidic condition, relative high concentration of citric acid and contamination levels were found to be beneficial for Pb(II) desorption. During the desorption process, the originally fixed Pb(II) was first replaced by H+, especially at low selectivity sorption sites. The released Pb(II) was then chelated by organic ligands from citric acid.
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DOI:
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