Removal of pollutants from wastewater via biological methods and shifts in microbial community profile during treatment process

Phycoremediation of Synthetic Dyes Laden Textile Wastewater and Recovery of Bio-Based Pigments from Residual Biomass: An Approach towards Sustainable Wastewater Management

“…Phycoremediation can overcome these limitations as it can be used for wastewater treatment, biomass generation, and CO 2 sequestration. The phycoremediation approach has already been applied to the tertiary treatment [129] as well as in secondary treatment [130] of wastewater as they tend to withstand stress due to a polluted environment and can grow in them [24]. Also, they can be used in the primary treatment process as a biosorbent.…”

“…Algae exhibit distinctive metabolic capacities and can remediate contaminants via diverse mechanisms such as biosorption, bioaccumulation and degradation [19][20][21]. The efficacy of phycoremediation has been evidenced in treating wastewater, eliminating nutrients, sequestration of carbon, and remediation of contaminants, including heavy metals, organic compounds, and surplus nitrogen and phosphorus [22][23][24]. The utilization of algae in phycoremediation offers several benefits, such as their swift growth, elevated capacities for pollutant removal, and adaptability to diverse environments such as wastewater ponds or bioreactors.…”

Microalgae-based wastewater treatment: Mechanisms, challenges, recent advances, and future prospects

“…Although these methods are more effective when used in secondary WWT, high costs, dewatering limitations, and the high efforts needed for maintenance are deemed the major shortcomings of these technologies [ 14 , 20 ]. In contrast, biological approaches depend on the metabolic activities of microorganisms to decompose and convert pollutants of WW to biomass and associated gases (CO 2 , CH 4 , N 2 , and SO 2 ), thereby decreasing the values of BOD and COD in the effluents and improving their quality [ 21 ]. Biological treatments involve biodegradation bleaching using different microorganisms, including bacteria, fungi, yeast, and microalgae [ [22] , [23] , [24] , [25] , [26] , [27] , [28] , [29] , [30] ].…”

Application of microalgae in wastewater: opportunity for sustainable development

“…Phosphorus is mainly precipitated by adding cations such as calcium, aluminum, and iron, resulting in an expensive process (Christensen et al, 2022). As an alternative for the treatment, reduction, and/or elimination of nitrogen and phosphorus, the use of microalgae arises which, being a natural process, may seem simple and involve a series of complex metabolic processes that vary based on the conditions of the crops and the composition of the effluent to be treated (Dalvi et al, 2021). Biological treatment systems based on microalgae allow the reduction of nutrients such as potassium, nitrogen, phosphorus, and CO 2 , having a potential application to be used as an alternative in the treatment of effluents for the reduction of organic matter, COD, BOD, and elimination of nitrogen and phosphorus, as well as to reduce fecal pathogens and bacteria, removal of emerging contaminants and heavy metals (Amaro et al, 2023a).…”