title: Effects of Inoculated Bacillus subtilis on Geosmin and 2-Methylisoborneol Removal in Suspended Growth Reactors Using Aquacultural Waste for Biofloc Production.
abstract: Geosmin and 2-methylisoborneol (2-MIB) are two of the most common taint compounds that adversely affect the quality of aquacultural animals. In the present study, 94% of geosmin and 97% of 2-MIB in suspended growth reactors producing bioflocs (SGRs) with aquaculture waste were removed after inoculation with Bacillus subtilis, significantly higher than that of control SGRs (70% of geosmin and 86.4% of 2-MIB). The lowest concentrations of geosmin and 2-MIB achieved in the effluent of the SGRs were 2.43 ± 0.42 ng/l and 2.23 ± 0.15 ng/l, respectively. The crude protein content of the bioflocs produced in the SGRs was 35 ± 4%. The NH4(+)-N and NO2(-)-N concentrations in the effluent of the reactors were 1.13 ± 0.21 mg/l and 0.42 ± 0.04 mg/l, respectively. These results suggest that inoculated with Bacillus subtilis, SGRs have a better performance to reuse the nitrogen in fish waste and to remove geosmin and 2-MIB from the culture water efficiently.
authors.affiliation: College of Fisheries and Life Sciences of Shanghai Ocean University, Shanghai 201306, P.R. China.|Research and Development Center of Aquacultural Engineering of Shanghai, Shanghai 201306, P.R. China.|Shanghai Collaborative Innovation Center for Aquatic Animal Genetics and Breeding, Shanghai 201306, P.R. China.
authors.forename: Guozhi
authors.initials: G
authors.lastname: Luo
authors.affiliation: College of Fisheries and Life Sciences of Shanghai Ocean University, Shanghai 201306, P.R. China.
authors.forename: Jiao
authors.initials: J
authors.lastname: Wang
authors.affiliation: College of Fisheries and Life Sciences of Shanghai Ocean University, Shanghai 201306, P.R. China.
authors.forename: Niannian
authors.initials: N
authors.lastname: Ma
authors.affiliation: College of Fisheries and Life Sciences of Shanghai Ocean University, Shanghai 201306, P.R. China.
authors.forename: Zefeng
authors.initials: Z
authors.lastname: Liu
authors.affiliation: College of Fisheries and Life Sciences of Shanghai Ocean University, Shanghai 201306, P.R. China.|Research and Development Center of Aquacultural Engineering of Shanghai, Shanghai 201306, P.R. China.|Shanghai Collaborative Innovation Center for Aquatic Animal Genetics and Breeding, Shanghai 201306, P.R. China.
authors.forename: Hongxin
authors.initials: H
authors.lastname: Tan
mesh_terms: D000818:Animals; D017756:Aquaculture; D001412:Bacillus subtilis / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D001673:Biodegradation, Environmental / Q000187:drug effects; D001892:Camphanes / Q000378:metabolism*; D005399:Fishes / Q000502:physiology; D009284:Naphthols / Q000378:metabolism*; D009584:Nitrogen / Q000378:metabolism; D014865:Waste Disposal, Fluid; D014867:Water / Q000032:analysis*; D018508:Water Purification / Q000379:methods
chemical_list: D001892:Camphanes; D009284:Naphthols; D014867:Water; C005536:2-methylisoborneol; C001278:geosmin; D009584:Nitrogen
keywords: 2-methylisoborneol; Bacillus subtilis; Geosmin; aquaculture waste; biofloc technology