title: Highly efficient adsorption of cationic dye by biochar produced with Korean cabbage waste.
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.
authors.affiliation: Department of Chemical and Biological Engineering, Hanbat National University, San 16-1, Deokmyeong-Dong, Yuseong-Gu, Daejeon 305-719, Republic of Korea.
authors.forename: Divine D
authors.initials: DD
authors.lastname: Sewu
authors.affiliation: Department of Chemical and Biological Engineering, Hanbat National University, San 16-1, Deokmyeong-Dong, Yuseong-Gu, Daejeon 305-719, Republic of Korea.
authors.forename: Patrick
authors.initials: P
authors.lastname: Boakye
authors.affiliation: Department of Chemical and Biological Engineering, Hanbat National University, San 16-1, Deokmyeong-Dong, Yuseong-Gu, Daejeon 305-719, Republic of Korea. Electronic address: shwoo@hanbat.ac.kr.
authors.forename: Seung H
authors.initials: SH
authors.lastname: Woo
mesh_terms: D000327:Adsorption; D001937:Brassica / Q000737:chemistry*; D002412:Cations; D002606:Charcoal / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry* / Q000302:isolation & purification; D003224:Congo Red / Q000737:chemistry; D005502:Food; D005840:Gentian Violet / Q000737:chemistry / Q000302:isolation & purification; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D012275:Oryza / Q000737:chemistry; D018520:Plant Shoots / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods; D014866:Waste Products; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000302:isolation & purification; D014934:Wood / Q000737:chemistry
chemical_list: D002412:Cations; D004396:Coloring Agents; D014866:Waste Products; D014874:Water Pollutants, Chemical; C540010:biochar; D002606:Charcoal; D003224:Congo Red; D005840:Gentian Violet
keywords: Activated carbon; Adsorption; Biochar; Dye; Korean cabbage waste