利用生物炭去除水中的天然有机物。

Adsorption removal of natural organic matters in waters using biochar.

机构信息

Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.

Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.

出版信息

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

DOI:10.1016/j.biortech.2018.04.016

PMID:29655897

Abstract

This work concerns the adsorption of aromatic organic matter from river water using various doses of a simulated biochar. The water yielded five UV 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.

摘要

本工作采用不同剂量的模拟生物炭研究了河水对芳香族有机物的吸附。水产生了五个紫外吸收峰，与尺寸排阻色谱（SEC）中的有机物相对应，分子量（MW）分别为 10000、6500、4800、3000 和 1500 Da。生物炭去除了所有这些峰，DOC 总吸附量为 6.4mg/g-C，并且优先去除高分子量的有机物。准二级动力学模型表明吸附动力学受物理吸附控制。因此，生物炭可用作水中有机物的有效吸附剂。