Investigation on removing recalcitrant toxic organic polluters in coking wastewater by forward osmosis

Zhiqiang Li; Lanying Jiang; Chongjian Tang

doi:10.1016/j.cjche.2019.07.011

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Investigation on removing recalcitrant toxic organic polluters in coking wastewater by forward osmosis

Separation Science and Engineering | Updated：2026-01-06

- Investigation on removing recalcitrant toxic organic polluters in coking wastewater by forward osmosis
- Investigation on removing recalcitrant toxic organic polluters in coking wastewater by forward osmosis
- 中国化学工程学报（英文版） 2020年28卷第1期页码：122-135
- Affiliations：
  
  1. School of Metallurgy and Environment, Central South University,Changsha,China,410000
  2. National Engineering Research Center for Control & Treatment of Heavy Metal Pollution,Changsha,China,410000
  3. Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety,Changsha,China,410000
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.07.011
  中图分类号：
- 纸质出版：2020
- Accepted：
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Zhiqiang Li, Lanying Jiang, Chongjian Tang. Investigation on removing recalcitrant toxic organic polluters in coking wastewater by forward osmosis[J]. 中国化学工程学报（英文版）, 2020,28(1):122-135.

Zhiqiang Li, Lanying Jiang, Chongjian Tang. Investigation on removing recalcitrant toxic organic polluters in coking wastewater by forward osmosis[J]. Chinese Journal of Chemical Engineering, 2020, 28(1): 122-135.
Zhiqiang Li, Lanying Jiang, Chongjian Tang. Investigation on removing recalcitrant toxic organic polluters in coking wastewater by forward osmosis[J]. 中国化学工程学报（英文版）, 2020,28(1):122-135. DOI： 10.1016/j.cjche.2019.07.011.

Zhiqiang Li, Lanying Jiang, Chongjian Tang. Investigation on removing recalcitrant toxic organic polluters in coking wastewater by forward osmosis[J]. Chinese Journal of Chemical Engineering, 2020, 28(1): 122-135. DOI： 10.1016/j.cjche.2019.07.011.

摘要

Abstract

Investigation was made on the efficiency of two commercial membranes in removing via forward osmosis (FO) the low molecular weight organic compounds typical of coking wastewater. The membranes were supplied by Poten and HTI companies. The organics in the simulated coking water were indole and pyrridine. Under FO mode

the rejection to the organics by Poten membrane was around 50%

whereas that for HTI membrane was obviously higher

ranging from 65% to 74%. The response of the two membranes in terms of Water flux and reverse salt flux (RSF) towards changing feed/draw solution (DS) flow rates in FO mode showed similar tendency

but different degree. Generally

the flux in FO using HTI membranes was lower. For HTI membrane

FO operated with pressure retarded osmosis (PRO) mode was also performed and the overall rejection of the organics was slightly lower than that in FO mode. In the long term FO test within 15 days

both Poten and HTI membranes displayed flux reduction and rejection enhancement. But the variation with Poten membrane was much more obvious. Discussion was carried out about the reasons and the mechanisms behind the FO performance difference between two membranes and the variation in flux and rejection with operation conditions. Characterizations by SEM

FTIR

AFM

XRD and XPS were tried to support the proposed explanations.

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