Aquaculture wastewater treatment technologies and their sustainability: A review

Tom, Asha P; Jayakumar, Jayalekshmi S; Biju, Minnu; Somarajan, Jithin; Ibrahim, Muhammad Ajas

doi:10.1016/j.nexus.2021.100022

Cited by 79 publications

(40 citation statements)

References 57 publications

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“…Extensive aquaculture generates a huge amount of polluted nitrogen-rich water released into the costal seas, directly improving the nitrogen pool in marine ecosystems, altering the balance of species [138]. The marine cyanobacterium Synechococcus sp.…”

Section: Cyanobacteria In Bioremediationmentioning

confidence: 99%

Versatile Applications of Cyanobacteria in Biotechnology

et al. 2022

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Cyanobacteria are blue-green Gram-negative and photosynthetic bacteria which are seen as one of the most morphologically numerous groups of prokaryotes. Because of their ability to fix gaseous nitrogen and carbon dioxide to organic materials, they are known to play important roles in the universal nutrient cycle. Cyanobacteria has emerged as one of the promising resources to combat the issues of global warming, disease outbreaks, nutrition insecurity, energy crises as well as persistent daily human population increases. Cyanobacteria possess significant levels of macro and micronutrient substances which facilitate the versatile popularity to be utilized as human food and protein supplements in many countries such as Asia. Cyanobacteria has been employed as a complementary dietary constituent of feed for poultry and as vitamin and protein supplement in aquatic lives. They are effectively used to deal with numerous tasks in various fields of biotechnology, such as agricultural (including aquaculture), industrial (food and dairy products), environmental (pollution control), biofuel (bioenergy) and pharmaceutical biotechnology (such as antimicrobial, anti-inflammatory, immunosuppressant, anticoagulant and antitumor); recently, the growing interest of applying them as biocatalysts has been observed as well. Cyanobacteria are known to generate a numerous variety of bioactive compounds. However, the versatile potential applications of cyanobacteria in biotechnology could be their significant growth rate and survival in severe environmental conditions due to their distinct and unique metabolic pathways as well as active defensive mechanisms. In this review, we elaborated on the versatile cyanobacteria applications in different areas of biotechnology. We also emphasized the factors that could impede the implementation to cyanobacteria applications in biotechnology and the execution of strategies to enhance their effective applications.

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Section: Cyanobacteria In Bioremediationmentioning

confidence: 99%

Versatile Applications of Cyanobacteria in Biotechnology

et al. 2022

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“…Currently, most of the research incorporating algal species into the IMTA has demonstrated the efficiency of marine algae and bivalves (Jones et al, 2002; Paolacci et al, 2022; Ramos et al, 2009; Udom et al, 2013) in the treatment of shrimp or fish effluents, which is another IMTA system. The obstacle concerning the use of microalgae is related to the harvesting process, which according to Tom et al (2021), is the essential phase in the practice of microalgae‐assisted aquaculture and is also the most expensive. In addition, keeping the microalgae separate from the pond where the organisms are grown has been difficult.…”

Section: Future Trends and Perspectives In Arthrospira Cultivation In...mentioning

confidence: 99%

Current advances in phytoremediation and biochemical composition of Arthrospira ( Spirulina ) grown in aquaculture wastewater

Cardoso

Lemos

Souza

et al. 2022

Aquaculture Research

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Inadequate wastewater management can cause negative impacts on the ecosystem, becoming an obstacle to aquaculture growth. New technologies have been developed to reduce the nutrient load in aquaculture wastewater involving microalgae as phytoremediation agents. In addition to reducing the nutrient load of water bodies, the microalgae‐based phytoremediation can also generate high‐added value biomass. Arthrospira (Spirulina) is a little‐explored genus as a phytoremediation agent for aquaculture wastewater, representing about 30% of the biomass produced in the world that is known for its high concentration of proteins, carotenoids and phycocyanin. Using the aquaculture wastewater is an important strategy to reduce the production costs, obtain high‐added value biomolecules and mitigate the effects of wastewater on the aquatic ecosystem. However, there are few reports of Arthrospira sp. as a remediation agent for aquaculture wastewater that assesses the biochemical composition. This manuscript aimed to review the cellular mechanisms of phytoremediation and the biochemical composition of Arthrospira currently described when grown in aquaculture wastewater.

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“…Food and feces are present in aquaculture effluents and cause environmental deterioration of both receiving water bodies and sediments. They cause the increased metabolic activity of aerobic bacteria, and the scarcity of oxygen by bacterial action leads to the destruction of the most vulnerable aerobic life forms in rivers and lakes [36].…”

Section: Agro-industrial Wastewaters Overviewmentioning

confidence: 99%

Agro-Industrial Wastewaters for Algal Biomass Production, Bio-Based Products, and Biofuels in a Circular Bioeconomy

et al. 2022

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Recycling bioresources is the only way to sustainably meet a growing world population’s food and energy needs. One of the ways to do so is by using agro-industry wastewater to cultivate microalgae. While the industrial production of microalgae requires large volumes of water, existing agro-industry processes generate large volumes of wastewater with eutrophicating nutrients and organic carbon that must be removed before recycling the water back into the environment. Coupling these two processes can benefit the flourishing microalgal industry, which requires water, and the agro-industry, which could gain extra revenue by converting a waste stream into a bioproduct. Microalgal biomass can be used to produce energy, nutritional biomass, and specialty products. However, there are challenges to establishing stable and circular processes, from microalgae selection and adaptation to pretreating and reclaiming energy from residues. This review discusses the potential of agro-industry residues for microalgal production, with a particular interest in the composition and the use of important primary (raw) and secondary (digestate) effluents generated in large volumes: sugarcane vinasse, palm oil mill effluent, cassava processing waster, abattoir wastewater, dairy processing wastewater, and aquaculture wastewater. It also overviews recent examples of microalgae production in residues and aspects of process integration and possible products, avoiding xenobiotics and heavy metal recycling. As virtually all agro-industries have boilers emitting CO2 that microalgae can use, and many industries could benefit from anaerobic digestion to reclaim energy from the effluents before microalgal cultivation, the use of gaseous effluents is also discussed in the text.

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Aquaculture wastewater treatment technologies and their sustainability: A review

Cited by 79 publications

References 57 publications

Versatile Applications of Cyanobacteria in Biotechnology

Versatile Applications of Cyanobacteria in Biotechnology

Current advances in phytoremediation and biochemical composition of Arthrospira ( Spirulina ) grown in aquaculture wastewater

Agro-Industrial Wastewaters for Algal Biomass Production, Bio-Based Products, and Biofuels in a Circular Bioeconomy

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