| Literature DB >> 30460656 |
Rong-Zhong Wang1,2, Dan-Lian Huang3,4, Chen Zhang1,2, Yun-Guo Liu5,6, Guang-Ming Zeng1,2, Cui Lai1,2, Xiao-Min Gong1,2, Min Cheng1,2, Jia Wan1,2, Qing Zhang1,2.
Abstract
Chemical treatment could improve the adsorption performance of biochars (BC). In order to deal with Pb(II) pollution, four types of biochars including unmodified, acid-treated, alkali-treated, and magnetic-treated pig manure-derived biochars (PBCs) were prepared. The effect of chemical treatment on the physical property, chemical composition, and the adsorption behavior of biochars was compared. Magnetic and alkali treatment improved pore volume and specific surface areas, and the adsorption capacity and rates were enhanced. In contrast, the adsorption capacity of acid-treated BC decreased due to the significant decrease of ash content. The magnetic samples displayed the satisfactory absorption performance, which could achieve 99.8% removal efficiency within 15 min at a Pb(II) concentration of 50 mg/L. Considering its properties of excellent adsorption performance, fast reaction rate, and convenient recovery by an external magnetic field, magnetic biochar based on pig manure may provide an effective way to remove heavy metals and decrease the pig manure solid waste.Entities:
Keywords: Adsorption; Biochar; Chemical treatment; Modification; Pb(II); Pig manure
Mesh：
Substances：
Year: 2018 PMID： 30460656 DOI： 10.1007/s11356-018-3772-6
Source DB: PubMed Journal: Environ Sci Pollut Res Int ISSN： 0944-1344 Impact factor: 4.223