Continuous microalgae cultivation in aquaculture wastewater by a membrane photobioreactor for biomass production and nutrients removal

Gao, Feng; Li, Chen; Yang, Zhen; Zeng, Guangming; Feng, Lijuan; Liu, Jun-zhi; Liu, Mei; Cai, Hao

doi:10.1016/j.ecoleng.2016.03.046

Cited by 271 publications

(108 citation statements)

References 35 publications

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“…The initial concentration of total phosphorus was 1.1 mg/L, and the content decreased with the microalgal treatment by 99.1%. In the study conducted by Gao et al [25], the average reductions of total nitrogen and total phosphorus in aquaculture wastewater achieved in the presence of Chlorella vulgaris were 86.1% and 82.7%, respectively. Van Den Hende et al [26] used a mixed culture of microalgae and bacteria for the removal of these nutrients and noted reductions of 57.9% and 88.6%, respectively.…”

Section: Removal Of Nitrogen and Phosphorus From Aquaculture Wastewatermentioning

confidence: 96%

Production of Microalgal Biomass Using Aquaculture Wastewater as Growth Medium

Hawrot-Paw

Koniuszy

Gałczyńska

et al. 2019

Water

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Aquaculture wastewater contains a huge amount of substances that can cause environmental pollution. However, microalgae can absorb these compounds and convert them into useful biomass. In this study, Chlorella minutissima was grown in the wastewater resulting from saline aquaculture. The microalgae were found to effectively utilize nitrogen and phosphorus in the wastewater for its growth. During wastewater treatment, the cell density increased almost fivefold compared to the initial value (OD 680 0.502). Moreover, batch culture resulted in the maximum biomass concentration and productivity of 4.77 g/L and 0.55 g/L/day, respectively. The contents of total nitrogen and total phosphorus in wastewater decreased by 88% and over 99%, respectively. In addition, the content of N-NO 3 was reduced by 88.6%, N-NO 2 by 74.3%, and dissolved orthophosphates (V) by 99%. At the beginning and throughout the experiment, the content of N-NH 4 in wastewater remained below 0.05 mg/L. Furthermore, a high lipid content of 46.4% (w/w) was also obtained from the studied microalgae.

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Section: Removal Of Nitrogen and Phosphorus From Aquaculture Wastewatermentioning

confidence: 96%

Production of Microalgal Biomass Using Aquaculture Wastewater as Growth Medium

Hawrot-Paw

Koniuszy

Gałczyńska

et al. 2019

Water

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“…Biotreatment of aquaculture wastewaters with microalgae is an attractive approach for simultaneous costeffective microalgal mass production and sustainable wastewater remediation [21]. In fact, aquaculture effluents can be an excellent medium for algal growth [21][22][23][24][25][26], although these wastes contain residual organic compounds and other micropollutants. For instance, shrimp farm wastewater containing phosphorus, nitrogen and total and volatile suspended solids in high concentrations [21,27], is a suitable medium for microalgae cultivation [26].…”

Section: Introductionmentioning

confidence: 99%

Fish farm effluents are suitable growth media for Nannochloropsis gaditana, a polyunsaturated fatty acid producing microalga

Dourou

Tsolcha

Tekerlekopoulou

et al. 2018

Engineering in Life Sciences

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Fish farm effluents may be used as culture media for marine microalgae, the cell mass of which constitute an excellent fish feed rich in bioactive compounds. In the current investigation different fish farm effluents were tested as culture media for Nannochloropsis strains. Among them, Nannochloropsis gaditana grew well on the effluent released from the sedimentation tank (EST), which is the final step of the wastewater treatment. Mono‐algal but non‐aseptic cultures were conducted in two types of photo‐bioreactors, namely stirred tank reactor (STR) and open pond simulating reactor (OPSR) working under various photoperiods. N. gaditana grew well under full illumination mode on phosphate rich EST in the STR, producing 847.0 mg/L of dry cell mass containing 7.8%, w/w lipids, while when cultivated on phosphate limited EST, cell mass production was slightly lower but lipid biosynthesis was favored, with the lipid content reaching 24.7%, w/w in dry cell mass. In all trials, Nannochloropsis cell mass contained significant quantities of proteins and polysaccharides. Neutral lipids were predominant over polar lipids. Both glycolipid and phospholipid fractions were rich in polyunsaturated fatty acids, especially in eicosapentaenoic acid. We conclude that fish farm wastewaters can be re‐used as microalgae growth media, which is of financial and environmental importance.

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“…However, the development of the aquaculture industry leads to increasing feeding cost and wastewater problems caused by fish food residue and fish faeces (Roy et al 2011;Gao et al 2016). High nutrient content such as carbon, phosphorus, and nitrogen from uneaten fish food and faeces leads to eutrophication and the outbreak of diseases.…”

Section: Microalgae Biomass Quality As Fish Feedmentioning

confidence: 99%

“…The increasing demand for seafood has led to the intensive development of aquaculture industries all over the world (Gao et al 2016). However, the development of the aquaculture industry leads to increasing feeding cost and wastewater problems caused by fish food residue and fish faeces (Roy et al 2011;Gao et al 2016).…”

Section: Microalgae Biomass Quality As Fish Feedmentioning

confidence: 99%

An overview of the utilisation of microalgae biomass derived from nutrient recycling of wet market wastewater and slaughterhouse wastewater

2017

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Microalgae have high nutritional values for aquatic organisms compared to fish meal, because microalgae cells are rich in proteins, lipids, and carbohydrates. However, the high cost for the commercial production of microalgae biomass using fresh water or artificial media limits its use as fish feed. Few studies have investigated the potential of wet market wastewater and slaughterhouse wastewater for the production of microalgae biomass. Hence, this study aims to highlight the potential of these types of wastewater as an alternative superior medium for microalgae biomass as they contain high levels of nutrients required for microalgae growth. This paper focuses on the benefits of microalgae biomass produced during the phycoremediation of wet market wastewater and slaughterhouse wastewater as fish feed. The extraction techniques for lipids and proteins as well as the studies conducted on the use of microalgae biomass as fish feed were reviewed. The results showed that microalgae biomass can be used as fish feed due to feed utilisation efficiency, physiological activity, increased resistance for several diseases, improved stress response, and improved protein retention.

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Continuous microalgae cultivation in aquaculture wastewater by a membrane photobioreactor for biomass production and nutrients removal

Cited by 271 publications

References 35 publications

Production of Microalgal Biomass Using Aquaculture Wastewater as Growth Medium

Production of Microalgal Biomass Using Aquaculture Wastewater as Growth Medium

Fish farm effluents are suitable growth media for Nannochloropsis gaditana, a polyunsaturated fatty acid producing microalga

An overview of the utilisation of microalgae biomass derived from nutrient recycling of wet market wastewater and slaughterhouse wastewater

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