title: Bioflocculant production by Haloplanus vescus and its application in acid brilliant scarlet yellow/red removal.
abstract: A novel bioflocculant MBF057 produced by a salt-tolerant Haloplanus vescus HW0579 was investigated in this study. The effects of culture conditions such as initial pH, inoculum size, and chemical oxygen demand (COD) of K-acid wastewater on MBF0579 production were studied. The result showed that 8.09 g/L purified MBF0579 was extracted with the following optimized conditions: 780 mg/L COD of K-acid wastewater as carbon source, inoculum size 12.5%, and initial pH 7.0. The biopolymer contained 78.6% polysaccharides and 21.1% proteins. The highest flocculating rate of 81.86 and 95.07% for the COD and chroma of acid brilliant scarlet gelb rot (yellow/red, GR) dye wastewater were achieved at a dosage of 150 mg/L, pH 2.0 and contact time 100 min. Overall, these findings indicate bioflocculation offers an effective alternative method of decreasing acid brilliant scarlet GR during dye wastewater treatment.
authors.affiliation: School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, China E-mail: wallice24@hotmail.com; Hubei Key Laboratory of Purification and Application of Plant Anticancer Active Ingredients, Chemistry and Biology Science College, Hubei University of Education, Wuhan 430205, China; These two authors contributed equally to this work.
authors.forename: Chun-Ying
authors.initials: CY
authors.lastname: Zhong
authors.affiliation: School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, China E-mail: wallice24@hotmail.com; These two authors contributed equally to this work.
authors.forename: Hong-Gao
authors.initials: HG
authors.lastname: Chen
authors.affiliation: School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, China E-mail: wallice24@hotmail.com.
authors.forename: Gang
authors.initials: G
authors.lastname: Cao
authors.affiliation: School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, China E-mail: wallice24@hotmail.com.
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.affiliation: School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, China E-mail: wallice24@hotmail.com.
authors.forename: Jian-Gang
authors.initials: JG
authors.lastname: Zhou
mesh_terms: D001391:Azo Compounds / Q000378:metabolism; D001557:Benzenesulfonates / Q000378:metabolism; D001673:Biodegradation, Environmental; D004396:Coloring Agents / Q000378:metabolism*; D052918:Environmental Restoration and Remediation / Q000379:methods*; D019605:Euryarchaeota / Q000378:metabolism*; D005427:Flocculation; D006863:Hydrogen-Ion Concentration; D062065:Wastewater / Q000737:chemistry / Q000382:microbiology; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
chemical_list: D001391:Azo Compounds; D001557:Benzenesulfonates; D004396:Coloring Agents; D062065:Wastewater; D014874:Water Pollutants, Chemical; C059093:brilliant red 5SKH; C059622:Direct Yellow 4 dye