Pyrolytic Temperature Dependent and Ash Catalyzed Formation of Sludge Char with Ultra-High Adsorption to 1-Naphthol

被引：103

作者：

Liu, Xiao-Qing ^{[1
]}

Ding, Hong-Sheng ^{[1
]}

Wang, Yuan-Ying ^{[1
]}

Liu, Wu-Jun ^{[1
]}

Jiang, Hong ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Peoples R China

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2016年 / 50卷 / 05期

关键词：

SEWAGE-SLUDGE; ORGANIC-MATTER; WOOD CHARS; SORPTION MECHANISMS; MOLECULAR-STRUCTURE; AROMATIC-COMPOUNDS; ACTIVATED CARBON; CO-PYROLYSIS; BLACK CARBON; BIO-OIL;

D O I：

10.1021/acs.est.5b04536

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Massively produced sewage sludge brings a serious problem to environment. Pyrolysis is a promising and bifunctional technology to dispose the sewage sludge and recover energy, in which a large amount of pyrolytic sludge char is also produced. In this study, we proposed a value-added utilization of sludge char. We prepared an adsorbent with ultrahigh capacity for hydrophobic organic pollutant (1-naphthol) by pyrolysis of sludge and removal of the ash moiety from the sludge char. The adsorptive behavior of the adsorbent is strongly dependent on the pyrolytic temperature of sludge, and the maximum adsorption capacity of 666 mg g(-1) was achieved at 800`degrees C, which is comparable to deliberately modified graphene. Further exploration indicated that the robust adsorption to 1-naphthol is attributed to the catalytic effect of ash in sludge which facilitated the formation of more orderly graphitic structures and aromaticity at high pyrolytic temperatures.

引用

页码：2602 / 2609

页数：8

共 51 条

[1] Effects of pyrolysis temperature on soybean stover- and peanut shell-derived biochar properties and TCE adsorption in water [J].