Biological activities and nitrogen and phosphorus removal during the anabaena flos-aquae biofilm growth using different nutrient form

Zhu, Yuxuan; Tu, Xiaojie; Chai, Xiaoyan; Wei, Qun; Guo, Linjie

doi:10.1016/j.biortech.2017.12.003

Cited by 19 publications

(10 citation statements)

References 37 publications

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“…Zhu et al [24] studied the nitrogen and phosphorus removal during the Anabaena flos-aquae biofilm growth, in two nutrient mediums, containing different nitrogen and phosphorus compounds. The results demonstrated that the nitrogen and phosphorus removal reached 94.9 and 96.8%, respectively, in the form of ammonium nitrogen, while 97.7% of phosphorus were removed in the form of orthophosphate phosphorous (Table 2).…”

Section: Other Speciesmentioning

confidence: 99%

Multipurpose Agricultural Reuse of Microalgae Biomasses Employed for the Treatment of Urban Wastewater

et al. 2022

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The pollution of water caused by the excessive presence of organic and inorganic compounds, such as nitrates, phosphates, heavy metals, antibiotics, agrochemicals, etc., is one of the major environmental problems in many countries. Various approaches to remediate wastewater are available, and this review mainly provides the state of the art about the possible adoption of microalgae-based treatments (phycoremediation), which may represent a good alternative to conventional purification methods. Because of its composition, wastewater can provide several nutritional compounds (e.g., carbon, nitrogen, and phosphorus), which represent the essential nutrients for microalgae growth. Microalgae are also attracting the interest of worldwide researchers due to their multipurpose applications; in particular, microalgae cells can represent a useful feedstock for various sectors, among these, the agricultural sector. This review proposes a detailed description of the possible application of microalgae in the process of remediation of wastewaters of different sources, highlighting their possible advantages. Moreover, the review aims to report the application of the microalgae biomasses and their extracts in agriculture, as microalgae-based products can represent a valid alternative to traditional agrochemicals, offering sustainable solutions to improve agricultural technologies. Therefore, since the recently developed wastewater depuration technology based on phycoremediation may directly provide valuable microalgae biomasses, it can be used as a powerful starting means to produce agricultural products able to improve yield and quality of crops (biostimulants, biofertilizers), as well as induce pest and disease resistance (biopesticides).

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Section: Other Speciesmentioning

confidence: 99%

Multipurpose Agricultural Reuse of Microalgae Biomasses Employed for the Treatment of Urban Wastewater

et al. 2022

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“…Also, microalgae require nitrogen and phosphorus for their growth, which they can take up in large amounts from the wastewater. 15,16 Many studies have reported the use of microalgal consortia or bacterial-algal mixtures for the removal of nutrients from wastewater and for generating algal biomass. [17][18][19] Under different environmental conditions, using a bacterial-algal mixture makes the system robust and work efficiently.…”

Section: Introductionmentioning

confidence: 99%

Bioremediation of coke plant wastewater from steel industry with mixed activated sludge–microalgal consortium in lab‐scale semi‐continuous mode

Nagi

Chetry

Singh

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: Removal of toxicities from wastewater has always demanded great attention as it has life-threatening impacts on every living being and the environment. In the present study, bioremediation of ammonia and cyanide from coke plant wastewater (CPWW) by using bacterial consortia with activated sludge (AS) supplemented with microalgal (MA) biomass in semi-continuous mode was performed. Parameters such as pH, total dissolved solids (TDS), dissolved oxygen (DO) and bacterial cell viability, along with any significant effect on the growth of microalgal cells in wastewater, was investigated by determining its specific growth rate (⊘).RESULTS: With pH values remaining constant for the system, the ammonia removal rate with microalgae additions was approximately 38.3% lower than that with AS. Similarly, the cyanide removal rate after addition of microalgae to the system showed a difference of 43% with AS treatment. TDS levels dropped by 22.18% and the concentration of DO increased by 21.91% in comparison to the values obtained by treatment of CPWW with AS and MA to CPWW with AS alone. CONCLUSION: Microalgae additions effectively increase the efficiency of AS treatment of CPWW and thus can be taken to field trials for developing a cost-effective and environmentally friendly strategy of wastewater treatment.

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“…It is critical to examine strains of wastewater-borne bacteria more closely and to improve their nutrient removal efficiency; only a few suitable strains have been isolated and identified in aquaculture sewage thus far. Moreover, most of these strains are efficient at ammonium removal and phosphorus accumulation under certain medium conditions, but their application in high-content natural aquaculture wastewaters has been rarely reported (Zhu et al 2018). To en hance the performance of selected ammonia nitrogen removal strains (ANRSs) and phosphate removal strains (PRSs), biochar possessing a large specific surface area (SSA) and complex pore structure could be used in conjunction with bacteria.…”

Section: Introductionmentioning

confidence: 99%

Biochar-immobilized Sphingomonas sp. and Acinetobacter sp. isolates to enhance nutrient removal: potential application in crab aquaculture

Shao

Zhong

Mao

et al. 2020

Aquacult. Environ. Interact.

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The frequency of water exchange and reducing the risk of eutrophication to surrounding water bodies have always been water-quality control issues in recirculating aquaculture systems. In this study, maize straw biochar prepared through pyrolysis showed great potential for both bacterial immobilization and pollutant adsorption. Heterotrophic bacterial strains of Sphingomonas sp. PDD-57b-25 and Acinetobacter towneri were isolated in situ from wastewater for pollutant remediation through a 16S rDNA-based method, which has been rarely reported to date. The selected strains had higher ammonia nitrogen (NH4+-N, 63%), nitrite nitrogen (NO2--N, 38%), nitrate nitrogen (NO3--N, 25%) and total phosphorus (TP, 35%) assimilation capacities than those of other widely applied bacteria under similar medium conditions. In addition, more NH4+-N (+16%), NO2--N (+14%), NO3--N (+17%) and TP (+19%) was removed by biochar-immobilized isolated strains than dissociated strains, suggesting their use may provide a means of improving water-quality control in recirculating aquaculture. With specific additions (4 g l-1) of biochar-immobilized Sphingomonas sp. PDD-57b-25 and A. towneri, the dissolved inorganic nitrogen (approximately 0.45 mg l-1) and TP (approximately 0.09 mg l-1) levels were maintained below the clean water threshold for recirculating aquaculture of crab Eriocheir sinensis. Furthermore, the added strains exhibited high bio-safety and were capable of improving the yield and quality of crabs. Results indicate the potential applicability of biochar-immobilized Sphingomonas sp. PDD-57b-25 and A. towneri in agricultural sewage treatments. Further, the experimental methodology developed here may be used for the exploration of new strains for practical aquaculture.

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Biological activities and nitrogen and phosphorus removal during the anabaena flos-aquae biofilm growth using different nutrient form

Cited by 19 publications

References 37 publications

Multipurpose Agricultural Reuse of Microalgae Biomasses Employed for the Treatment of Urban Wastewater

Multipurpose Agricultural Reuse of Microalgae Biomasses Employed for the Treatment of Urban Wastewater

Bioremediation of coke plant wastewater from steel industry with mixed activated sludge–microalgal consortium in lab‐scale semi‐continuous mode

Biochar-immobilized Sphingomonas sp. and Acinetobacter sp. isolates to enhance nutrient removal: potential application in crab aquaculture

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