title: Engineered hydrochar composites for phosphorus removal/recovery: Lanthanum doped hydrochar prepared by hydrothermal carbonization of lanthanum pretreated rice straw.
abstract: Engineered hydrochar composites (EHC) were synthesized by hydrothermal carbonization (HTC) of lanthanum pretreated rice straw. The as-prepared composite with about 30% lanthanum content showed greater P removal potential than La(OH)3, indicating the synergistic effect of hydrochar and lanthanum in P removal. The adsorption results showed that EHC showed great P adsorption capacities (>50mgPg(-1)) in the pH range of 2.5-10.5, and the presence of competing anions had little negative effects on P adsorption on EHC. The equilibrium time for P adsorption on EHC was considerably reduced under acid condition (12h) compared to alkaline condition (48h). The maximum adsorption capacity was 61.57mgPg(-1) according to Langmuir isotherms. These results suggested that EHC was highly effective in P adsorption in a wide range of pH and the presence of competing anions, thus EHC could be a promising adsorbent for phosphorus removal/recovery from wastewater.
authors.affiliation: Biomass Energy Technology Research Center, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China.
authors.forename: Lichun
authors.initials: L
authors.lastname: Dai
authors.affiliation: Biomass Energy Technology Research Center, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Wu
authors.affiliation: Biomass Energy Technology Research Center, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China.
authors.forename: Furong
authors.initials: F
authors.lastname: Tan
authors.affiliation: Biomass Energy Technology Research Center, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China.
authors.forename: Mingxiong
authors.initials: M
authors.lastname: He
authors.affiliation: Biomass Energy Technology Research Center, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China.
authors.forename: Wenguo
authors.initials: W
authors.lastname: Wang
authors.affiliation: Biomass Energy Technology Research Center, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China.
authors.forename: Han
authors.initials: H
authors.lastname: Qin
authors.affiliation: Biomass Energy Technology Research Center, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China.
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Tang
authors.affiliation: Biomass Energy Technology Research Center, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China.
authors.forename: Qili
authors.initials: Q
authors.lastname: Zhu
authors.affiliation: Biomass Energy Technology Research Center, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China.
authors.forename: Ke
authors.initials: K
authors.lastname: Pan
authors.affiliation: Biomass Energy Technology Research Center, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China. Electronic address: mail1632008@163.com.
authors.forename: Qichun
authors.initials: Q
authors.lastname: Hu
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D007700:Kinetics; D007811:Lanthanum / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D012275:Oryza / Q000737:chemistry*; D010758:Phosphorus / Q000302:isolation & purification*; D017550:Spectroscopy, Fourier Transform Infrared; D013816:Thermodynamics; D014961:X-Ray Diffraction
chemical_list: D002606:Charcoal; D010758:Phosphorus; D007811:Lanthanum
keywords: Hydrochar composite; Hydrothermal carbonization; Lanthanum; Phosphorus recovery; Phosphorus removal