Adsorption removal of natural organic matters in waters using biochar

Duu-Jong Lee; Ya-Ling Cheng; Ruei-Jyun Wong; Xiao-Dong Wang

doi:10.1016/j.biortech.2018.04.016

Adsorption removal of natural organic matters in waters using biochar

Bioresour Technol. 2018 Jul:260:413-416. doi: 10.1016/j.biortech.2018.04.016. Epub 2018 Apr 7.

Authors

Duu-Jong Lee¹, Ya-Ling Cheng², Ruei-Jyun Wong², Xiao-Dong Wang³

Affiliations

¹ Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan. Electronic address: djlee@ntu.edu.tw.
² Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
³ Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China.

PMID: 29655897
DOI: 10.1016/j.biortech.2018.04.016

Abstract

This work concerns the adsorption of aromatic organic matter from river water using various doses of a simulated biochar. The water yielded five UV₂₅₄ peaks associated with organic matters in size exclusion chromatography (SEC), corresponding to molecular weights (MW) of 10,000, 6500, 4800, 3000, and 1500 Da. Biochar removes all of these peaks with an overall adsorption of 6.4 mg-DOC/g-C, and preferentially removes organic matter with high MW. Physisorption control in a pseudo-second-order type model fits the adsorption kinetics. Biochar can therefore be used as an efficient adsorbent of organic matter in water.

Keywords: Adsorption; Aromatic organic matters; Biochar; Molecular weights.

MeSH terms

Adsorption
Charcoal*
Kinetics
Molecular Weight
Water Pollutants, Chemical*

Substances

Water Pollutants, Chemical
biochar
Charcoal