Elaborating the mechanism of lead adsorption by biochar: considering the impacts of water-washing and freeze-drying in preparing biochar

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成果类型：

期刊论文

作者：

Liu, Yihuan;Chen, Yaoning;Li, Yuanping;Chen, Li;Jiang, Hongjuan;...

通讯作者：

Chen, YN

作者机构：

[Zhao, Mengyang; Chen, YN; Chen, Yaoning; Zhao, Chen; Hou, Suzhen; Liu, Yihuan; Yan, Haoqin; Chen, Li; Jiang, Hongjuan; Jiang, Longbo] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China.

[Zhao, Mengyang; Chen, YN; Chen, Yaoning; Zhao, Chen; Hou, Suzhen; Liu, Yihuan; Yan, Haoqin; Chen, Li; Jiang, Hongjuan; Jiang, Longbo] Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Peoples R China.

[Li, Yuanping] Hunan City Univ, Sch Municipal & Geomat Engn, Yiyang 413000, Peoples R China.

[Chen, Yanrong] Hunan Univ Technol & Business, Sch Resource & Environm, Changsha 410205, Peoples R China.

通讯机构：

[Chen, YN ] H

Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China.

Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Peoples R China.

语种：

英文

关键词：

Biochar;Combined pretreatment;Pb immobilization;Soil remediation

期刊：

Bioresource Technology

ISSN：

0960-8524

年：

2023

卷：

386

页码：

129447

DOI：

10.1016/j.biortech.2023.129447

基金类别：

National Natural Science Foundation of China [51979104]; Natural Science Foundation of Hunan Province, China [2023JJ30130, 2021JJ30080, 2021JJ50152]; Research Foundation of Education Department of Hunan Prov-ince, China [21B0715]

机构署名：

本校为其他机构

院系归属：

市政与测绘工程学院

摘要：

This paper examined the impacts of different pretreatments on the characteristics of biochar and its adsorption behavior for Pb(2+). Biochar with combined pretreatment of water-washing and freeze-drying (W-FD-PB) performed a maximum adsorption capacity for Pb(2+) of 406.99mg/g, higher than that of 266.02mg/g on water-washing pretreated biochar (W-PB) and 188.21mg/g on directly pyrolyzed biochar (PB). This is because the water-washing process partially removed the K and Na, resulting in the relatively enriched Ca and Mg on W-FD-PB. And the freeze-drying pretreatment broke the fiber structure of...

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Elaborating the mechanism of lead adsorption by biochar: considering the impacts of water-washing and freeze-drying in preparing biochar

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