Tuning role and mechanism of paint sludge for characteristics of sewage sludge carbon: Paint sludge as a new macro-pores forming agent

Siyang Li; Jinxi Feng; Shuanghong Tian; Shenyu Lan; Chao Fan; Xiaosheng Liu; Ya Xiong

doi:10.1016/j.jhazmat.2017.11.012

Tuning role and mechanism of paint sludge for characteristics of sewage sludge carbon: Paint sludge as a new macro-pores forming agent

J Hazard Mater. 2018 Feb 15:344:657-668. doi: 10.1016/j.jhazmat.2017.11.012. Epub 2017 Nov 7.

Authors

Siyang Li¹, Jinxi Feng², Shuanghong Tian³, Shenyu Lan⁴, Chao Fan⁵, Xiaosheng Liu⁶, Ya Xiong⁷

Affiliations

¹ School of Environment Science and Engineering, Sun Yat-Sen(Zhongshan) University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, PR China. Electronic address: lisiyangemial@163.com.
² School of Environment Science and Engineering, Sun Yat-Sen(Zhongshan) University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, PR China. Electronic address: 493440398@qq.com.
³ School of Environment Science and Engineering, Sun Yat-Sen(Zhongshan) University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, PR China. Electronic address: tshuangh@mail.sysu.edu.cn.
⁴ School of Environment Science and Engineering, Sun Yat-Sen(Zhongshan) University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, PR China. Electronic address: lanshy3@mail.sysu.edu.cn.
⁵ School of Environment Science and Engineering, Sun Yat-Sen(Zhongshan) University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, PR China. Electronic address: chao.fan1986@hotmail.com.
⁶ School of Environment Science and Engineering, Sun Yat-Sen(Zhongshan) University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, PR China. Electronic address: 962212531@qq.com.
⁷ School of Environment Science and Engineering, Sun Yat-Sen(Zhongshan) University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, PR China. Electronic address: cesxya@mail.sysu.edu.cn.

PMID: 29154091
DOI: 10.1016/j.jhazmat.2017.11.012

Abstract

For the first time, paint sludge waste (PS) was used as a pore forming agent in the preparation of sewage sludge derived carbon (SC). The tuning role and mechanism of PS for characteristics of SC were explored. It was found that a sludge carbon (SC_PS-Zn) with rich macro-, meso- and micro- porous could be produced by one-step pyrolytic process of sludge in the presence of PS and ZnCl_2. Its surface area could reach as high as 680.5m²g^-1 as 88.4 times and 4.8 times of sludge carbon without addition of PS and ZnCl₂ (SC) and only addition of ZnCl₂ (SC_Zn)_, respectively. The macro- pores fabricated by PS provided much inner-space for ZnCl₂ to generate meso- and micro- porous, leading to a hierarchical porous structure. SC_PS-Zn showed a high adsorption capacity of 685.4mgg^-1 for Chrysophenine, which is 1.3 and 1.7 times that of SC_PS and SC_Zn respectively. The adsorption difference could be simply attributed to the fact that the great molecules were difficult to enter micro- pores of SC_Zn. It was also found that the difference was also dependent on orientation of Chrysophenine, which was related to pH value of solution.

Keywords: Adsorption; Paint sludge; Sewage sludge carbon.