Nitrogen and phosphate removal from wastewater with a mixed microalgae and bacteria culture

Delgadillo-Mirquez, Liliana; Lopes, Filipa; Taidi, Behnam; Pareau, Dominique

doi:10.1016/j.btre.2016.04.003

Cited by 377 publications

(147 citation statements)

References 33 publications

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“…In this study, the pH of the growth environment of C. minutissima was slightly alkaline and ranged from 7.98 to 8.54 ( Table 2). The pH changes may have been a result of CO2 consumption from the medium or the absorption of nitrate ions by the microalgae [33].…”

Section: Removal Of Nitrogen and Phosphorus From Aquaculture Wastewatermentioning

confidence: 99%

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: 99%

Production of Microalgal Biomass Using Aquaculture Wastewater as Growth Medium

Hawrot-Paw

Koniuszy

Gałczyńska

et al. 2019

Water

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“…Most of the phosphorous is taken up and transformed into microorganism biomass and/or precipitated by complex components within active sludge, and remains in the treatment system [31,32]. The gasification of TN (mostly in the form of ammonia) to N 2 gas is conducted by microorganism due to anoxic condition created by granular activated sludge, which a conventional aerobic wastewater treatment is usually limited [33].…”

Section: Discussionmentioning

confidence: 99%

Sequencing Batch Reactor and Bacterial Community in Aerobic Granular Sludge for Wastewater Treatment of Noodle-Manufacturing Sector

et al. 2018

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Abstract:The sequencing batch reactor (SBR) has been increasingly applied in the control of high organic wastewater. In this study, SBR with aerobic granular sludge was used for wastewater treatment in a noodle-manufacturing village in Vietnam. The results showed that after two months of operation, the chemical oxygen demand, total nitrogen and total phosphorous removal efficiency of aerobic granular SBR reached 92%, 83% and 75%, respectively. Bacterial diversity and bacterial community in wastewater treatment were examined using Illumina Miseq sequencing to amplify the V3-V4 regions of the 16S rRNA gene. A high diversity of bacteria was observed in the activated sludge, with more than 400 bacterial genera and 700 species. The predominant genus was Lactococcus (21.35%) mainly containing Lactococcus chungangensis species. Predicted functional analysis showed a high representation of genes involved in membrane transport (12.217%), amino acid metabolism (10.067%), and carbohydrate metabolism (9.597%). Genes responsible for starch and sucrose metabolism accounted for 0.57% of the total reads and the composition of starch hydrolytic enzymes including α-amylase, starch phosphorylase, glucoamylase, pullulanase, α-galactosidase, β-galactosidase, α-glucosidase, β-glucosidase, and 1,4-α-glucan branching enzyme. The presence of these enzymes in the SBR system may improve the removal of starch pollutants in wastewater.

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“…The authors suggest that one of the promising directions in the purification of waste water is the use of algae to remove nitrogen, phosphorus, heavy metals. The authors of [4] showed that the removal of nitrogen, when using microalgae is from 72 to 83%.…”

Section: Introductionmentioning

confidence: 99%

Mobile plants for plasma chemical water treatment

Bruyako

Grigor’eva

2018

MATEC Web Conf.

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Water is a valuable natural resource. It provides an exceptional role in metabolic processes, which are the basis of life. The negative factor of human activity is pollution of the environment, including water resources. Municipal sewage treatment is an urgent environmental problem. It exists both in Russia and abroad. Despite all the measures and methods used to treat wastewater, pollutants continue to flow into water bodies. The most dangerous pollutants are heavy metals, organic substances (proteins, fats, carbohydrates). To solve this problem, both traditional and modern methods are proposed. The purpose of this study is to develop an energy-efficient, eco-friendly mobile device for water purification based on the action of low-temperature nonequilibrium plasma. The developed installation has a small weight of 20 to 50 kg, occupies a small area. To move it you can use any vehicle. Model samples and samples from the municipal sewerage network were prepared as experimental samples. The effect of low-temperature plasma showed a high degree of purification with a single exposure at low values of electric energy consumption per unit of water to be purified. Reduction of the concentration of ammonium-ion and ammonium nitrogen reaches 96-98%.

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Nitrogen and phosphate removal from wastewater with a mixed microalgae and bacteria culture

Abstract: Graphical abstract

Cited by 377 publications

References 33 publications

Production of Microalgal Biomass Using Aquaculture Wastewater as Growth Medium

Production of Microalgal Biomass Using Aquaculture Wastewater as Growth Medium

Sequencing Batch Reactor and Bacterial Community in Aerobic Granular Sludge for Wastewater Treatment of Noodle-Manufacturing Sector

Mobile plants for plasma chemical water treatment

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