Lead removal by a magnetic biochar derived from persulfate-ZVI treated sludge together with one-pot pyrolysis

被引：133
作者：
Chen, Yi-di [1 ]
Ho, Shih-Hsin [1 ]
Wang, Dawei [2 ]
Wei, Zong-su [3 ]
Chang, Jo-Shu [1 ,4 ,5 ]
Ren, Nan-qi [1 ]
机构：
[1] Harbin Inst Technol, Sch Municipal & Environm Engn, State Key Lab Urban Water Resource & Environm, Harbin 150090, Heilongjiang, Peoples R China
[2] Virginia Commonwealth Univ, Dept Mech & Nucl Engn, Richmond, VA 23219 USA
[3] Technion Israel Inst Technol, Wolfson Fac Chem Engn, IL-32000 Haifa, Israel
[4] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 701, Taiwan
[5] Natl Cheng Kung Univ, Res Ctr Energy Technol & Strategy, Tainan 701, Taiwan
来源：
BIORESOURCE TECHNOLOGY | 2018年 / 247卷
关键词：
Dewatered ion-containing biochar; Lead removal; Waste activated sludge; Zero-valent iron; Adsorption isotherm and kinetics; ZERO-VALENT IRON; WASTE ACTIVATED-SLUDGE; HEAVY-METAL IONS; SEWAGE-SLUDGE; SORPTION MECHANISMS; HEXAVALENT CHROMIUM; AQUEOUS-SOLUTION; METHYLENE-BLUE; BIOMASS WASTE; DEWATERABILITY;
D O I：
10.1016/j.biortech.2017.09.125
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In this study, a novel method to treat the persulfate-ZVI dewatered WAS by producing a magnetic biochar as an environmentally friendly biosorbent (nZVI-WSBC) to remove heavy metals (HMs) from wastewaters was proposed. The nZVI-WSBC exhibited good adsorption property of Pb2+ and the adsorption isotherm data were fitted well to Langmuir isotherm. Corresponding reaction kinetics fitted well with the pseudo second-order adsorption model. Notably, nZVI-WSBC was successfully used for efficient removal of HMs from real. This study comprehensively demonstrates the mechanisms between Pb2+ and nZVI-WSBC surfaces, providing a breakthrough in making a sustainable biosorbent from the dewatered iron-containing WAS.
引用
收藏
页码：463 / 470
页数：8
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