2022
DOI: 10.3389/fmicb.2021.801051
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Biological Approaches Integrating Algae and Bacteria for the Degradation of Wastewater Contaminants—A Review

Abstract: The traditional approach for biodegradation of organic matter in sewage treatment used a consortium of bacterial spp. that produce untreated or partially treated inorganic contaminants resulting in large amounts of poor-quality sludge. The aeration process of activated sludge treatment requires high energy. So, a sustainable technique for sewage treatment that could produce less amount of sludge and less energy demanding is required for various developed and developing countries. This led to research into usin… Show more

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Cited by 45 publications
(20 citation statements)
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“…The biomass of the algae biofilm with was higher than that reported in a study using domestic sewage as the cultivation medium ( Gross et al, 2013 ) and another study using polyacrylamide in simulating oil flooding wastewater as N resource ( Zhang et al, 2021 ). The concentration of nitrogen in water directly affects the growth of algal biofilm ( Lin et al, 2013 ; Mathew et al, 2022 ).…”
Section: Resultsmentioning
confidence: 99%
“…The biomass of the algae biofilm with was higher than that reported in a study using domestic sewage as the cultivation medium ( Gross et al, 2013 ) and another study using polyacrylamide in simulating oil flooding wastewater as N resource ( Zhang et al, 2021 ). The concentration of nitrogen in water directly affects the growth of algal biofilm ( Lin et al, 2013 ; Mathew et al, 2022 ).…”
Section: Resultsmentioning
confidence: 99%
“…In the present study, however, no significant difference was observed across conditions of E. gracilis 815 in biomass accumulation by Day 6, indicating that this new strain shows strong adaptability to environmental conditions when biomass is harvested in the short term. Since we have proved the possibility of water reuse in the cultivation of E. gracilis Z recently (Wu et al, 2021a), further evaluations in E. gracilis 815 could be expanded to reusing the wastes from other process, such as exhaust gases or wastewater from factories or livestock, in the cultivation of microalgae (Tsolcha et al, 2018;Amenorfenyo et al, 2019;Dębowski et al, 2020b;Geremia et al, 2021;Mathew et al, 2021;Cheng et al, 2022;Lopez-Sanchez et al, 2022;Singh and Singh, 2022). The biomass of various E. gracilis 815 groups ranged between 0.78-0.94 g/L when their cell density ranged between 1.90 × 10 6 -2.3 × 10 6 cells/ml.…”
Section: Discussionmentioning
confidence: 99%
“…The activated sludge treatment microalgae facilitate nitrification by generating a sufficient quantity of dissolved O 2 [51]. The integration of a bacterial-microalgal approach for wastewater treatment is a promising approach as heterotrophic bacteria degrade the organic matter in the absence of aerated oxygen, as the microalgae provide O 2 , and similarly, the need for CO 2 sparging is eliminated as bacterial respiration produces it [52].…”
Section: Factors Affecting the Microalgae Wastewater Treatment 51 Bac...mentioning
confidence: 99%