title: Improving the growth of Rubrivivax gelatinosus cultivated in sewage environment.
abstract: Rubrivivax gelatinosus cultivated in wastewater environment can combine the biomass resource recycling for generating chemicals with sewage purification. However, low biomass accumulation restricts the exertion of this advantage. Thus, this paper investigated Fe(3+) advancement for biomass production in starch wastewater under light-anaerobic condition. Results showed that addition of Fe(3+) was successful in enhancing biomass production, which certainly improved the feasibility of biomass recycling in R. gelatinosus starch wastewater treatment. With optimal Fe(3+) dosage (20 mg/L), biomass production reached 4,060 mg/L, which was 1.63 times that of control group. Amylase activity was improved by 48 %. Both COD removal and starch removal reached 90 %. Hydraulic retention time was shortened by 25 %. Proper Fe(3+) dosage enhanced biomass production, but excess Fe(3+) was harmful for biomass accumulation.
authors: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China, woacademic@gmail.com.
authors: Pan
authors: P
authors: Wu
authors: Jian-zheng
authors: JZ
authors: Li
authors: Yan-ling
authors: YL
authors: Wang
authors: Qing-yue
authors: QY
authors: Tong
authors: Xian-shu
authors: XS
authors: Liu
authors: Cong
authors: C
authors: Du
authors: Ning
authors: N
authors: Li
mesh_terms: D000681:Amylases / Q000378:metabolism; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D019149:Bioreactors; D042521:Burkholderiaceae / Q000254:growth & development*; D005290:Ferric Compounds / Q000737:chemistry; D012722:Sewage / Q000382:microbiology*; D013213:Starch / Q000378:metabolism
chemical_list: D005290:Ferric Compounds; D012722:Sewage; D013213:Starch; D000681:Amylases