title: [Simultaneous removal of algae and its odorous metabolite dimethyl trisulfide in water by potassium ferrate].
abstract: Co-removal of oscillatoria algae and its potential odorous metabolite dimethyl trisulfide (DMTS) in simulated algae-laden alkaline source water by potassium ferrate (K2FeO4) was investigated in contrast to potassium permanganate (KMnO4) pre-oxidation followed by polyferric chloride (PFC) under varying conditions, including pH, initial oxidant dosage and turbidity. Based on the pre-comparison with PFC, the optimal dosage of PFC in the combined KMnO4 pre-oxidation-PFC treatment was determined. Potassium ferrate resulted in 92.4% removal of algae, higher than PFC when the dosage was equivalent as measured by Fe and KMnO4 showed obviously positive effect as a coagulation aid. Degradation of dimethyl trisufide (92.5%) by potassium ferrate was better than the pre-oxidation of potassium permanganate (74.6%), and the treatment time was decreased from 10 min to 1 min.
authors.affiliation: Architecture Engineering College, Zhejiang University of Technology, Hangzhou 310014, China. mayaner620@163.com
authors.forename: Xiao-yan
authors.initials: XY
authors.lastname: Ma
authors.forename: Ze-hua
authors.initials: ZH
authors.lastname: Zhang
authors.forename: Hong-yu
authors.initials: HY
authors.lastname: Wang
authors.forename: Shi-fei
authors.initials: SF
authors.lastname: Hu
authors.forename: Qing-song
authors.initials: QS
authors.lastname: Li
mesh_terms: D003198:Computer Simulation; D058085:Iron Compounds / Q000737:chemistry*; D009284:Naphthols / Q000302:isolation & purification / Q000378:metabolism; D009812:Odorants; D054300:Oscillatoria / Q000254:growth & development / Q000302:isolation & purification* / Q000378:metabolism; D017680:Potassium Compounds / Q000737:chemistry*; D013440:Sulfides / Q000302:isolation & purification*; D014873:Water Pollutants / Q000302:isolation & purification*
chemical_list: D058085:Iron Compounds; D009284:Naphthols; D017680:Potassium Compounds; D013440:Sulfides; D014873:Water Pollutants; C044384:potassium ferrate; C054170:dimethyl trisulfide; C001278:geosmin