title: Comparison on the Surface Structure Properties along with Fe(II) and Mn(II) Removal Characteristics of Rice Husk Ash, InactiveSaccharomyces cerevisiaePowder, and Rice Husk.
abstract: This study selected solid wastes, such as rice husk ash (RHA), inactiveSaccharomyces cerevisiaepowder (ISP), and rice husk (RH), as the potential adsorbents for the removal of Fe(II) and Mn(II) in aqueous solution. The structural characteristics, functional groups, and elemental compositions were determined by scanning electron microscope (SEM) and Fourier translation infrared spectrum (FT-IR) analyses, respectively. Then the influence on the Fe(II) and Mn(II) removing efficiency by the factors, such as pH, adsorbent dosage, initial Fe(II) and Mn(II) concentration, and contact time, was investigated by the static batch test. The adsorption isotherm study results show that Langmuir equation can better fit the Fe(II) and Mn(II) adsorption process by the three adsorbents. The maximum adsorption amounts for Fe(II) were 6.211 mg/g, 4.464 mg/g, and 4.049 mg/g by RHA, ISP, and RH and for Mn(II) were 3.016 mg/g, 2.229 mg/g, and 1.889 mg/g, respectively. The adsorption kinetics results show that the pseudo-second-order kinetic model can better fit the Fe(II) and Mn(II) adsorption process. D-R model and thermodynamic parameters hint that the adsorption processes of Fe(II) and Mn(II) on the three adsorbents took place physically and the processes were feasible, spontaneous, and exothermic.
authors.affiliation: School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Zhao
authors.initials: Z
authors.lastname: Jiang
authors.affiliation: School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Cao
authors.affiliation: School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Guangxia
authors.initials: G
authors.lastname: Su
authors.affiliation: School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Lu
authors.affiliation: School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Jiaying
authors.initials: J
authors.lastname: Zhao
authors.affiliation: School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Dexin
authors.initials: D
authors.lastname: Shan
authors.affiliation: School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Xiuyuan
authors.initials: X
authors.lastname: Zhang
authors.affiliation: School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Ziyi
authors.initials: Z
authors.lastname: Wang
authors.affiliation: School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Ying
authors.identifier: 0000-0003-4196-161X
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000327:Adsorption; D005296:Ferrous Compounds / Q000737:chemistry* / Q000633:toxicity; D008345:Manganese / Q000737:chemistry* / Q000633:toxicity; D012275:Oryza / Q000737:chemistry; D011208:Powders / Q000737:chemistry / Q000633:toxicity; D012441:Saccharomyces cerevisiae / Q000737:chemistry; D062611:Solid Waste; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000633:toxicity; D018508:Water Purification / Q000379:methods*
chemical_list: D005296:Ferrous Compounds; D011208:Powders; D062611:Solid Waste; D014874:Water Pollutants, Chemical; D008345:Manganese