| Literature DB >> 26894566 |
XiaoJun Zuo1, Zhengang Liu2, MinDong Chen3.
Abstract
This study investigated effect of H2O2 concentrations on copper removal using H2O2 modified hydrothermal carbonization Cymbopogon schoenanthus L. Spreng (HLG). Sorption behaviors of Cu (II) on the modified HLG by 20% H2O2 (mHLG2) could be the most desirable. Based on Langmuir isotherm, the maximum amount of Cu (II) uptake was in the sequence of mHLG2 (53.8mgg(-1))>mHLG1 (44.2mgg(-1))>mHLG3 (42.0mgg(-1))>mHLG0 (35.8mgg(-1)), which was higher than the results from majority of previous studies, suggesting that H2O2 modification advanced sorption capacity of hydrothermal biochars evidently. Effect mechanisms exploration indicated that the difference of Cu (II) removal by biochars before and after the modification was mainly related to functional groups. Carboxylic group was responsible for the best sorption property of Cu (II) by mHLG2, which was attributed to its significant relationships with H2O2 modification and Cu (II) removal.Entities:
Keywords: Carboxylic group; Copper; H(2)O(2); Hydrothermal biochar; Sorption
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Year: 2016 PMID： 26894566 DOI： 10.1016/j.biortech.2016.02.032
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642