title: Investigation on the removal of Mo(VI) from Mo-Re containing wastewater by chemically modified persimmon residua.
abstract: Persimmon waste was chemically modified by crosslinking with concentrated sulfuric acid to obtain a novel kind of adsorption gel, which was termed as crosslinked persimmon tannin (CPT), hereinafter. The adsorption behaviors of Mo(VI) with other coexisting metal ions onto the CPT gel were investigated. The gel exhibited selectivity only for Mo(VI) ions evidenced by the high value of separation factor of molybdenum and rhenium (β(Mo/Re)=164.37), and the adsorption mechanism of Mo(VI) as a multispecies was studied. The molybdenum adsorption behavior conforms to the Langmuir model with a remarkably high adsorption capacity of 0.56 mol/kg. A kinetic study for the adsorption of molybdenum at various temperatures confirmed that the endothermic adsorption process followed pseudo-second order kinetics. Moreover, its excellent adsorption properties and applicability for Mo(VI) were demonstrated by the removal and separation of Mo(VI) from different Mo-Re containing industrial wastewaters.
authors.affiliation: College of Chemistry, Key Laboratory of Rare-scattered Elements of Liaoning Province, Liaoning University, Shenyang 110036, PR China. xiongying_1977@hotmail.com
authors.forename: Ying
authors.initials: Y
authors.lastname: Xiong
authors.forename: Chengbo
authors.initials: C
authors.lastname: Chen
authors.forename: Xuejun
authors.initials: X
authors.lastname: Gu
authors.forename: Biplob Kumar
authors.initials: BK
authors.lastname: Biswas
authors.forename: Weijun
authors.initials: W
authors.lastname: Shan
authors.forename: Zhenning
authors.initials: Z
authors.lastname: Lou
authors.forename: Dawei
authors.initials: D
authors.lastname: Fang
authors.forename: Shuliang
authors.initials: S
authors.lastname: Zang
mesh_terms: D000327:Adsorption / Q000187:drug effects; D001673:Biodegradation, Environmental / Q000187:drug effects; D002606:Charcoal / Q000737:chemistry; D003432:Cross-Linking Reagents / Q000494:pharmacology; D029788:Diospyros / Q000737:chemistry* / Q000187:drug effects; D005782:Gels; D006851:Hydrochloric Acid / Q000494:pharmacology; D007220:Industrial Waste / Q000032:analysis; D007700:Kinetics; D008982:Molybdenum / Q000302:isolation & purification*; D012211:Rhenium / Q000302:isolation & purification*; D017550:Spectroscopy, Fourier Transform Infrared; D013634:Tannins / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D003432:Cross-Linking Reagents; D005782:Gels; D007220:Industrial Waste; D013634:Tannins; D014874:Water Pollutants, Chemical; D002606:Charcoal; D012211:Rhenium; D008982:Molybdenum; D006851:Hydrochloric Acid