The effects of Bacillus subtilis on nitrogen recycling from aquaculture solid waste using heterotrophic nitrogen assimilation in sequencing batch reactors

Lu, Lu; Tan, Hongxin; Luo, Guozhi; Liang, Wenyan

doi:10.1016/j.biortech.2012.07.084

Cited by 37 publications

(35 citation statements)

References 28 publications

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“…The RAS was stocked with Jade Perch and has been described by Lu et al (2012). Fish were fed with a commercial diet (Tongwei 8912, Sichuan, China) containing 12% moisture, 44% crude protein, 5% crude fibers, 18% crude ash, and 1.7% phosphorus.…”

Section: Fish Wastementioning

confidence: 99%

“…Much of the focus has been on the treatment of dissolved waste, such as ammonium and nitrite (Neori et al, 2004), while less attention has been paid on treatment of aquacultural solid waste (Lu et al, 2012). It was perhaps because that sludge is not collected in the traditional methods of aquaculture, such as ponds, flow-through systems and net pens.…”

Section: Introductionmentioning

confidence: 99%

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Effects of calcium and magnesium addition on the start-up of sequencing batch reactor using biofloc technology treating solid aquaculture waste

Luo

Liang

Tan

et al. 2013

Aquacultural Engineering

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Section: Fish Wastementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of calcium and magnesium addition on the start-up of sequencing batch reactor using biofloc technology treating solid aquaculture waste

Luo

Liang

Tan

et al. 2013

Aquacultural Engineering

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“…Bioflocs are highly porous (greater than 99 % porosity) (Chu and Lee 2004) and contain extracellular polymeric substances (Lu et al 2012). They are also suggested to exhibit chemical or physical sorption abilities.…”

Section: Discussionmentioning

confidence: 99%

“…Six SGRs were installed as described by Lu et al (2012). Each reactor has an internal diameter of 15.0 cm and a liquid-filled height of 100.0 cm (equivalent to a working volume of 11.0 L).…”

Section: Sgrs and Fish Wastementioning

confidence: 99%

Removal of geosmin and 2-methylisoborneol by bioflocs produced with aquaculture waste

Luo

Tan

et al. 2015

Aquacult Int

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Geosmin and 2-methylisoborneol (MIB) are two of the most common odorous compounds that critically affect the quality of fish. In the current study, the solid fish waste from a recirculating aquaculture system (RAS) was used as the substrate to produce bioflocs in suspended growth reactors (SGRs). The removal efficiency of geosmin and MIB by the bioflocs was investigated under in situ and in vitro conditions. The highest removal rates for geosmin and MIB in the SGRs were 187.00 ± 0.23 and 170.91 ng L -1 d -1 , respectively. Under the in vitro experimental conditions, 90.30 % of the geosmin and 72.93 % of the MIB were removed from the aqueous phase by the bioflocs within 48 h of incubation. It was found that the decay of these odorous compounds by the bioflocs was mediated by both chemical/physical sorption and biological degradation. Moreover, the addition of these odorous compounds did not affect the treatment efficiency of the reactors and had no adverse influence on the crude protein content of the bioflocs. Thus, using biofloc technology (BFT), SGRs can be used to reuse the nitrogen in fish waste and to remove geosmin and MIB from the culture water efficiently.

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“…Another microbial reagent (B. subtilis) applied in this experiment was also isolated from the Dihe River, carried on complex clay. PSB and B. subtilis were used to enhance the purification of the polluted river water and remove C, N, and remediate the heavily polluted sedimentary sludge (Sheng et al, 2012;Lu et al, 2012). PSB microbial reagent (total viable count ∼4 × 10 9 cfu g −1 ) and B. subtilis reagent (total viable count ∼5 × 10 8 cfu g −1 ) were from Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences.…”

Section: Microbial Reagents Applicationmentioning

confidence: 99%

A combined application of different engineering and biological techniques to remediate a heavily polluted river

Sheng

Ding

et al. 2013

Ecological Engineering

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a b s t r a c tRiver pollution is becoming a serious problem worldwide. A field-scale experiment was undertaken to remediate a heavily polluted river using a combined engineering approach of aeration, microorganisms, biological aerated filtration, artificial biofilms and ecological floating beds. Prior to remediation, the river water was black, anoxic and highly sulfidic. With remediation, the chemical oxygen demand decreased from ∼250 to ∼50 mg L −1 , NH 4 + -N decreased from ∼27 to ∼4 mg L −1 , sulfide decreased from ∼3 to ∼0.3 mg L −1 , and total suspended solids decreased from ∼270 to ∼40 mg L −1 . At the same time, dissolved oxygen increased from ∼0.1 to ∼3.5 mg L −1 , and water clarity increased from ∼6 to ∼40 cm. Furthermore, the unpleasant odor emanating from the polluted river was also stopped, and local farmers have begun using the water for irrigation. This field-scale experiment thus indicates the potential usefulness of this combined engineering approach to remediate heavily polluted rivers.

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The effects of Bacillus subtilis on nitrogen recycling from aquaculture solid waste using heterotrophic nitrogen assimilation in sequencing batch reactors

Cited by 37 publications

References 28 publications

Effects of calcium and magnesium addition on the start-up of sequencing batch reactor using biofloc technology treating solid aquaculture waste

Effects of calcium and magnesium addition on the start-up of sequencing batch reactor using biofloc technology treating solid aquaculture waste

Removal of geosmin and 2-methylisoborneol by bioflocs produced with aquaculture waste

A combined application of different engineering and biological techniques to remediate a heavily polluted river

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