Low-molecular-weight organic acids enhance desorption of polycyclic aromatic hydrocarbons from soil.
作者： W. Ling , R. Sun , X. Gao , R. Xu , H. Li
DOI: 10.1111/EJSS.12227
关键词:
摘要: Summary The impact of low-molecular-weight organic acids (LMWOAs) on desorption phenanthrene and pyrene as representative polycyclic aromatic hydrocarbons (PAHs) from a contaminated soil was investigated by using laboratory batch experiment. Three LMWOAs were used in this study citric, oxalic malic acids. The aqueous solution promoted PAHs significantly demonstrated an increasing trend the concentration increased. When compared with to water, addition enhanced test up 285 299%, respectively. Among three studied, citric acid greatest efficiency promoting PAH soil. Solutions LMWOA continuously removal during multiple cycles desorption. Overall, experimental results suggest that could disrupt matter (SOM)–metal cation–mineral linkages soils, resulting release SOM simultaneous increase dissolved carbon (DOC) solution. loss DOC are responsible for positive correlation between desorbed suggests plays important role LMWOA-enhanced
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