Removal of hydrophobic volatile organic compounds with sodium hypochlorite and surfactant in a co-current rotating packed bed

Wenhui Li; Haidi Liu; Shuangde Li; Weiman Li; Yunfa Chen; Jiajia Gao; Yaqun Cao

doi:10.1016/j.jes.2016.12.009

Removal of hydrophobic volatile organic compounds with sodium hypochlorite and surfactant in a co-current rotating packed bed

J Environ Sci (China). 2018 Feb:64:190-196. doi: 10.1016/j.jes.2016.12.009. Epub 2016 Dec 28.

Authors

Wenhui Li¹, Haidi Liu², Shuangde Li², Weiman Li², Yunfa Chen³, Jiajia Gao⁴, Yaqun Cao⁴

Affiliations

¹ State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
² State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
³ State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: chenyf@ipe.ac.cn.
⁴ Key Laboratory of Healthy &Intelligent Kitchen System Integration, Zhejiang, Ningbo 315336, China.

PMID: 29478639
DOI: 10.1016/j.jes.2016.12.009

Abstract

A co-current flow rotating packed bed was applied to remove volatile organic compounds (VOCs) by sodium hypochlorite (NaClO) and surfactant (sodium dodecyl benzene sulfonate, SDBS) from air stream. Xylene was used as a model VOC herein. The effect of pH, concentration of NaClO and SDBS solution, liquid flow rate, gas flow rate and rotational speed on xylene removal efficiency and overall mass transfer coefficient (K_Ga) were discussed. Then, a correlation for K_Ga of the co-current rotating packed bed was proposed by fitting the experimental data of K_Ga and independent variables of liquid/gas ratio, rotational speed, pH, NaClO concentration and treatment time, which was in good agreement with the experimental data (the deviation≤±30%).

Keywords: Co-current flow rotating packed bed; Overall mass transfer coefficient; Removal efficiency; VOCs.

MeSH terms

Air Filters*
Air Pollutants / chemistry*
Sodium Hypochlorite / chemistry*
Surface-Active Agents / chemistry*
Volatile Organic Compounds / chemistry*

Substances

Air Pollutants
Surface-Active Agents
Volatile Organic Compounds
Sodium Hypochlorite