title: Properties comparison of biochars from corn straw with different pretreatment and sorption behaviour of atrazine.
abstract: Biochar has been recognised as an efficient pollution control material. In this study, biochars (CS450 and ADPCS450) were produced using corn straw with different pretreatment techniques (without and with ammonium dihydrogen phosphate (ADP)). The character of the two biochars was compared using elemental analysis, specific surface area (SSA) and Fourier transform infrared spectra (FTIR). ADPCS450 had a higher residue yield and a much larger specific surface area than CS450. The Freundlich, Langmuir and Redlich-Peterson models were used to interpret the sorption behaviour of atrazine (2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine), and the results fit the Redlich-Peterson equation best. The isothermal sorption parameters indicated that the sorption capacity of atrazine on ADPCS450 was much larger than the sorption capacity of atrazine on CS450. Atrazine sorption was also favoured in acidic solution and under higher temperature conditions.
authors.affiliation: School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China.
authors.forename: Xuchen
authors.initials: X
authors.lastname: Zhao
authors.affiliation: School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China. Electronic address: wei@itc.nl.
authors.forename: Wei
authors.initials: W
authors.lastname: Ouyang
authors.affiliation: School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China.
authors.forename: Fanghua
authors.initials: F
authors.lastname: Hao
authors.affiliation: School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China.
authors.forename: Chunye
authors.initials: C
authors.lastname: Lin
authors.affiliation: School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China.
authors.forename: Fangli
authors.initials: F
authors.lastname: Wang
authors.affiliation: School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China.
authors.forename: Sheng
authors.initials: S
authors.lastname: Han
authors.affiliation: School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China.
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Geng
mesh_terms: D000327:Adsorption; D001280:Atrazine / Q000737:chemistry / Q000302:isolation & purification*; D002606:Charcoal; D006540:Herbicides / Q000737:chemistry / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D017550:Spectroscopy, Fourier Transform Infrared; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D003313:Zea mays / Q000737:chemistry*
chemical_list: D006540:Herbicides; D014874:Water Pollutants, Chemical; C540010:biochar; D002606:Charcoal; D001280:Atrazine
keywords: Agrochemicals; Ammonium dihydrogen phosphate; Biochar; Pyrolysis; Sorption