title: Biosorbents based on agricultural wastes for ionic liquid removal: An approach to agricultural wastes management.
abstract: Modified biochars produced from different agricultural wastes were used as low-cost biosorbents to remove hydrophilic ionic liquid, 1-butyl-3-methyl-imidazolium chloride ([BMIM][Cl]). Herein, the biosorbents based on peanut shell, corn stalk and wheat straw (denoted as PB-K-N, CB-K-N and WB-K-N) all exhibited higher [BMIM][Cl] removal than many other carbonaceous adsorbents and the adsorption capacities were as the following: PB-K-N > CB-K-N > WB-K-N. The characterizations of biosorbents indicated that they had great deal of similarity in morphological, textural and surface chemical properties such as possessing simultaneously accessible microporous structure and abundant oxygen-containing functional groups. Additionally, adsorption of [BMIM][Cl] onto PB-K-N, CB-K-N and WB-K-N prepared from the modified process, which was better described by pseudo-second order kinetic and Freundlich isotherm models. Therefore, the viable approach could also be applied in other biomass materials treatment for the efficient removal of ILs from aqueous solutions, as well as recycling agricultural wastes to ease their disposal pressure.
authors.affiliation: Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
authors.forename: Fang
authors.initials: F
authors.lastname: Yu
authors.affiliation: Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
authors.forename: Li
authors.initials: L
authors.lastname: Sun
authors.affiliation: Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China. Electronic address: zhouyanmei@henu.edu.cn.
authors.forename: Yanmei
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, United States.
authors.forename: Bin
authors.initials: B
authors.lastname: Gao
authors.affiliation: Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
authors.forename: Wenli
authors.initials: W
authors.lastname: Gao
authors.affiliation: Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
authors.forename: Chong
authors.initials: C
authors.lastname: Bao
authors.affiliation: Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
authors.forename: Caixia
authors.initials: C
authors.lastname: Feng
authors.affiliation: Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
authors.forename: Yonghong
authors.initials: Y
authors.lastname: Li
mesh_terms: D000327:Adsorption; D010367:Arachis / Q000737:chemistry; D018533:Biomass; D002606:Charcoal / Q000737:chemistry*; D018556:Crops, Agricultural / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D052578:Ionic Liquids / Q000032:analysis* / Q000737:chemistry; D007477:Ions; D007700:Kinetics; D013499:Surface Properties; D014908:Triticum / Q000737:chemistry; D018505:Waste Management / Q000379:methods; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry; D018508:Water Purification / Q000379:methods*; D003313:Zea mays / Q000737:chemistry
chemical_list: D052578:Ionic Liquids; D007477:Ions; D014874:Water Pollutants, Chemical; C540010:biochar; D002606:Charcoal
keywords: Agricultural wastes; Biosorbents; Ionic liquid