Unraveling sorption of lead in aqueous solutions by chemically modified biochar derived from coconut fiber: A microscopic and spectroscopic investigation
摘要:
•Chemical modification increased Pb adsorption of the biochars pyrolyzed at 300°C.•Modification enhanced free carboxyl and hydroxyl groups on biochars' surfaces.•Pb-montmorillonite and Pb(C2H3O2)2were the dominant species of the Pb-loaded biochars.•The chemical modification decreased the exchangeable Pb on the Pb-loaded biochars.•Chemical modification reduced Pb adsorption on the biochars pyrolyzed at 700°C.
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DOI:
10.1016/j.scitotenv.2016.10.163
被引量:
年份:
2017
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