title: Production and optimization of bamboo hydrochars for adsorption of Congo red and 2-naphthol.
abstract: Twelve hydrochars were produced from bamboo sawdust for adsorption of Congo red and 2-naphthol. The bamboo hydrochars have Brunauer-Emmett-Teller (BET) surface areas ranging from 2.63m(2)/g to 43.07m(2)/g, average pore diameters from 3.05nm to 3.83nm, pore volumes between 0.02cm(3)/g and 0.53cm(3)/g, and the surfaces of the hydrochars have diverse functional groups. The physico-chemical properties of the hydrochars critically depend on the hydrothermal conditions. All the hydrochars can adsorb Congo red and 2-naphthol from aqueous solutions, the largest adsorption capacity for Congo red is 33.7mg/g at the equilibrium concentration of 0.1mg/mL at 25°C, and the highest adsorption amount for 2-naphthol is 12.2mg/g at 25°C and 0.1mg/mL. Freundlich model can describe the adsorption isotherms of the both adsorbates slightly better than Langmuir model. These results provide a reference to the production and use of hydrochars as potential adsorbents in wastewater treatment.
authors.affiliation: Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, Zhejiang, China; Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Zhejiang University, Hangzhou 310027, Zhejiang, China. Electronic address: cherryli1986@126.com.
authors.forename: Yin
authors.initials: Y
authors.lastname: Li
authors.affiliation: Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, Zhejiang, China.
authors.forename: Arun
authors.initials: A
authors.lastname: Meas
authors.affiliation: Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, Zhejiang, China.
authors.forename: Shengdao
authors.initials: S
authors.lastname: Shan
authors.affiliation: Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, Zhejiang, China.
authors.forename: Ruiqin
authors.initials: R
authors.lastname: Yang
authors.affiliation: Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, Zhejiang, China.
authors.forename: Xikun
authors.initials: X
authors.lastname: Gai
mesh_terms: D000327:Adsorption; D003224:Congo Red / Q000032:analysis / Q000737:chemistry*; D009284:Naphthols / Q000032:analysis / Q000737:chemistry*; D031787:Sasa / Q000737:chemistry*; D062065:Wastewater / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D003224:Congo Red; D009284:Naphthols; D062065:Wastewater; C028405:2-naphthol
keywords: 2-Naphthol; Adsorption; Bamboo hydrochar; Congo red; Hydrothermal carbonization