Fast removal of dyes from wastewater by combinatorial treatment by biosorption and visible light photodegradation

Kai Huang, Jiangting Wang, Shuqiang Jiao, Hongmin Zhu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Purification of wastewater containing dyes just by photocatalytic degradation under visible light irradiation is usually a slow process, especially for the cases of high concentration dyes in the water. From the viewpoint of economy and efficiency, decreasing the dyes concentration of wastewater to an optimal level suitable for visible light photocatalytic degradation is one of the methods to adopt. Based on the above ideas, a novel treatment process was designed for dye removal from water, which consisted of biosorption and photocatalysis under the visible light irradiation. High concentration (∼100mg/l) of dye waste water will be decreased rapidly after fast biosorption onto the biosorbents such as saponified apple juicing residue, sweet-stick bagasse, and then the obtained waste water with low concentration (∼5mg/l) of dye will much easier be degraded thoroughly under visible light irradiation in short time. The basic experiments were conducted to evaluate the principal characteristics of these two unit operations, and their removal behaviour for dye molecules from water was clarified respectively. The process exhibits outstanding advantages, i.e., much faster, more thorough, and energy saving, showing the great perspective for the dye waste water cleaning in the industry.

Original languageEnglish
Title of host publicationICMREE 2013 - Proceedings
Subtitle of host publication2013 International Conference on Materials for Renewable Energy and Environment
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages608-612
Number of pages5
ISBN (Electronic)9781479933365
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event2013 International Conference on Materials for Renewable Energy and Environment, ICMREE 2013 - Chengdou, China
Duration: 2013 Aug 192013 Aug 21

Publication series

NameICMREE 2013 - Proceedings: 2013 International Conference on Materials for Renewable Energy and Environment
Volume2

Other

Other2013 International Conference on Materials for Renewable Energy and Environment, ICMREE 2013
CountryChina
CityChengdou
Period13/8/1913/8/21

Keywords

  • Biosorption
  • dye waste water treatment
  • energy saving
  • high efficiency
  • visible light photocatalysis

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology

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