Comparative evaluation for the sorption capacity of four carbonaceous sorbents to phenol

Chemical Speciation & Bioavailability

Ding Feng Jin¹  Yong Sik Ok¹  Ming Zhang¹  Yeong Sang Jung²  Yuan Yuan Xu³ 

[1] College of Materials Science and Engineering, China Jiliang University;Kangwon National University;Zhejiang Institute of Metrology;

关键词: Sorption;    kinetics;    isotherms;    carbonaceous sorbents;    phenol;    black carbon;   

DOI  :  10.1080/09542299.2015.1136570

来源: DOAJ

【 摘 要 】

Sorption kinetics and isotherms of phenol by four carbonaceous sorbents (activated carbon (AC), mesoporous carbon (MPC), bamboo biochar (BBC) and oak wood biochar (OBC)) were compared in this study. MPC has the fastest sorption rate and initial sorption potential, which were indicated by sorption rate constants and initial sorption rate “h” in a pseudo-second-order kinetic model. The ordered and straight pore structure of MPC facilitated the accessibility of phenol. The AC showed the greatest sorption capacity towards phenol with maximum sorption of 123 mg/g as calculated by the Langmuir model. High surface area, complexity of pore structure, and the strong binding force of the π–π electron-donor-acceptor interaction between phenol molecules and AC were the main mechanisms. The BBC and OBC had much slower sorption and lower sorption capacity (33.04 and 29.86 mg/g, respectively), compared to MPC (73.00 mg/g) and AC, indicating an ineffective potential for phenol removal from water.

【 授权许可】

Unknown