A facile pyrolysis synthesis of biochar/ZnO passivator: immobilization behavior and mechanisms for Cu (II) in soil.

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ID: 67374
2019
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Ranked #96 of 403 articles by views in Environmental science and pollution research international

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Abstract
Waste biomass can be recycled to prepare biochar for soil restoration, in which process soil fertility would not be lost. In this work, biochar was prepared from waste pomelo peel, combined with ZnO, to be used to immobilize Cu(II) in contaminated soil, whose maximum adsorption capacity was up to 216.37 mg g. Due to combination of ZnO, the BET surface area of biochar increased from 2.39 to 18.53 m g. Meanwhile, the surface functional groups increased, which was conducive to fixation of metal ion on the surface of biochar. Both pseudo-second-order kinetics and Langmuir isotherm model fit the experimental data well. Adsorption was easy to happen since the adsorption site on the surface of biochar/ZnO had a strong affinity with Cu(II). In addition, mechanism investigation indicated that Cu(II) was bond with biochar/ZnO mainly by non-bioavailable state (75.6%) primarily. It inferred that biochar/ZnO was an efficient and promising passivator in reducing heavy metal risk in soil.
Reference Key
wang2019aenvironmental Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wang, Ying;Wang, Luxing;Deng, Xiaoyan;Gao, Hongtao;
Journal Environmental science and pollution research international
Year 2019
DOI
10.1007/s11356-019-06888-z
URL
Keywords
Soil cu(ii) adsorption capacity biochar/zno immobilization mechanism

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