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Highly efficient adsorption of cationic dye by biochar produced with Korean cabbage waste

Sewu, Divine D., Boakye, Patrick, Woo, Seung H.·2017·Bioresource Technology
DOI 10.1016/j.biortech.2016.11.009
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Abstract

Biochar was produced from Korean cabbage (KC), rice straw (RS) and wood chip (WC) and the use as alternative adsorbents to activated carbon (AC) in wastewater treatment was investigated. Congo red (CR) and crystal violet (CV) were used as a model anionic and cationic dye, respectively. Initial solution pH had little effect on CR and CV adsorption onto all biochars except for AC on CR. The isotherm models and kinetic data showed that adsorption of CR and CV onto all biochars were dominantly by chemisorption. All biochars had lower adsorption capacity for CR than AC. KC showed higher Langmuir maximum adsorption capacity (1304mg/g) than AC (271.0mg/g), RS (620.3mg/g) and WC (195.6mg/g) for CV. KC may be a good alternative to conventional AC as cheap, superb and industrially viable adsorbent for removal of cationic dyes in wastewater.

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Metadata

Authors
Sewu, D. D., Boakye, P., & Woo, S. H.
Venue
Bioresource Technology
Publisher
Elsevier BV
Published
2017-01
Volume
224
Pages
206-213
ISSN
0960-8524
DOI
10.1016/j.biortech.2016.11.009
Cited by
277
References
3
Language
en
Licence
Funders
  • Small and Medium Business Administration (C03546350100441407)
  • National Research Foundation of Korea
  • Ministry of Education, Science and Technology (NRF-2013R1A1A2061532)

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