title: [Degradation of 2, 4-dichlorophenol in aqueous solution by ZVI/EDDS/air system].
abstract: A new oxidation system of Fenton-like system (ZVI/EDDS/Air) has been developed to degrade 2,4-chlorophenols (2,4-DCP) in aqueous solution. The influences of initial conditions, i. e., EDDS concentration, iron dosage, aeration rate, 2,4-DCP concentration and pH as well as reaction temperature on the degradation of 2,4-DCP were studied. The results demonstrated that this ZVI/EDDS/Air system was able to effectively degrade 2,4-DCP in aqueous solution, and the degradation of 2,4-DCP conforms to the pseudo-first-order reaction kinetics equation. Removal of above 99% 2,4-DCP was achieved in ZVI/EDDS/Air system at room temperature and pressure after 1 h reaction when the initial conditions were 2,4-DCP 100 mg x L(-1), EDDS 0.80 mmo x L(-1), ZVI 20 g x L(-1), aeration rate 2 L x (min x L)(-1). Compared with ZVI/EDTA/Air system, ZVI/EDDS/Air system showed higher efficiency in the degradation of 2,4-DCP at ambient circumstance and was more environmentally benign.
authors: Environmental Science Research Institute, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China. sq891214@163.com
authors: Qian
authors: Q
authors: Sun
authors: Hai-Yan
authors: HY
authors: Zhou
authors: Meng-Hua
authors: MH
authors: Cao
authors: Lin-Na
authors: LN
authors: Wu
authors: Lin-Ling
authors: LL
authors: Wang
authors: Jing
authors: J
authors: Chen
authors: Xiao-Hua
authors: XH
authors: Lu
mesh_terms: D000388:Air; D002384:Catalysis; D002733:Chlorophenols / Q000737:chemistry / Q000302:isolation & purification*; D005029:Ethylenediamines / Q000737:chemistry; D007501:Iron / Q000737:chemistry*; D010084:Oxidation-Reduction; D013386:Succinates / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry
chemical_list: D002733:Chlorophenols; D005029:Ethylenediamines; D007501:Iron; D013386:Succinates; D062065:Wastewater; C041447:N,N'-ethylenediamine disuccinic acid; C004762:2,4-dichlorophenol