Recent advances in microalgae-based remediation of industrial and non-industrial wastewaters with simultaneous recovery of value-added products

Sharma, Rozi; Mishra, Arti; Pant, Deepak; Malaviya, Piyush

doi:10.1016/j.biortech.2021.126129

Cited by 72 publications

(23 citation statements)

References 137 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[159] Wastewater as a growth medium for microalgae that cannot only utilize inorganic and organic nutrients metabolically but also in the cooperation with microbes to degrade/metabolize other pollutants with significant public health and environmental threat, like polyaromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), pesticides, insecticides, phenolics, petroleum hydrocarbons (PHCs), heavy metals, and antibiotics, [160][161][162] is a readily accessible and inexpensive approach [163,164] for WWT coupled with microalgae growth to offer cost-effective biomass feedstock and biofuel generation. [165][166][167] Initially, research into the use of wastewater-grown microalgae for energy production started with the use of microalgae as a feedstock for methane production. [168] Since then, international efforts have begun in-depth research into the development of microalgae WWT.…”

Section: Potential Development Of Genetic Engineering Of Microalgae F...mentioning

confidence: 99%

Multiomics approaches and genetic engineering of metabolism for improved biorefinery and wastewater treatment in microalgae

Kuo

Yang

Chien

et al. 2022

Biotechnology Journal

View full text Add to dashboard Cite

Microalgae, a group of photosynthetic microorganisms rich in diverse and novel bioactive metabolites, have been explored for the production of biofuels, high value-added compounds as food and feeds, and pharmaceutical chemicals as agents with therapeutic benefits. This article reviews the development of omics resources and genetic engineering techniques including gene transformation methodologies, mutagenesis, and genome-editing tools in microalgae biorefinery and wastewater treatment (WWT).The introduction of these enlisted techniques has simplified the understanding of complex metabolic pathways undergoing microalgal cells. The multiomics approach of the integrated omics datasets, big data analysis, and machine learning for the discovery of objective traits and genes responsible for metabolic pathways was reviewed. Recent advances and limitations of multiomics analysis and genetic bioengineering technology to facilitate the improvement of microalgae as the dual role of WWT and biorefinery feedstock production are discussed.

show abstract

Section: Potential Development Of Genetic Engineering Of Microalgae F...mentioning

confidence: 99%

Multiomics approaches and genetic engineering of metabolism for improved biorefinery and wastewater treatment in microalgae

Kuo

Yang

Chien

et al. 2022

Biotechnology Journal

View full text Add to dashboard Cite

show abstract

“…The intensive application of NO 3 − - and NH 4 + -based fertilizers in croplands, feeding-animal fecal deposition and dye industry effluent have caused global nitrogen pollution, including the eutrophication of water reservoirs, soil contamination and atmospheric pollution, which are recognized as a serious worldwide issue of public and economic concern [ 12 , 13 , 14 , 15 ]. Synergy of bioremediation of high nutrients containing wastewater with potentially valuable biomass production through microalgae including cyanobacteria cultivation is an economical and sustainable approach to mitigate nitrogen pollution [ 16 , 17 , 18 ]. However, the ammonium acclimation mechanism in cyanobacteria was still a mystery.…”

Section: Introductionmentioning

confidence: 99%

Site-2 Protease Slr1821 Regulates Carbon/Nitrogen Homeostasis during Ammonium Stress Acclimation in Cyanobacterium Synechocystis sp. PCC 6803

Lin

Ouyang

et al. 2023

IJMS

View full text Add to dashboard Cite

Excess ammonium imposes toxicity and stress response in cyanobacteria. How cyanobacteria acclimate to NH4+ stress is so far poorly understood. Here, Synechocystis sp. PCC6803 S2P homolog Slr1821 was identified as the essential regulator through physiological characterization and transcriptomic analysis of its knockout mutant. The proper expression of 60% and 67% of the NH4+ activated and repressed genes, respectively, were actually Slr1821-dependent since they were abolished or reversed in ∆slr1821. Synechocystis 6803 suppressed nitrogen uptake and assimilation, ammonium integration and mobilization of other nitrogen sources upon NH4+ stress. Opposite regulation on genes for assimilation of nitrogen and carbon, such as repression of nitrogen regulatory protein PII, PII interactive protein PirC and activation of carbon acquisition regulator RcbR, demonstrated that Synechocystis 6803 coordinated regulation to maintain carbon/nitrogen homeostasis under increasing nitrogen, while functional Slr1821 was indispensable for most of this coordinated regulation. Additionally, slr1821 knockout disrupted the proper response of regulators and transporters in the ammonium-specific stimulon, and resulted in defective photosynthesis as well as compromised translational and transcriptional machinery. These results provide new insight into the coordinated regulation of nutritional fluctuation and the functional characterization of S2Ps. They also provide new targets for bioengineering cyanobacteria in bioremediation and improving ammonium tolerance in crop plants.

show abstract

“…Typically, microalgae absorb the toxic metals in the wastewater as nutrient for its growth. Microalgae are also used as the substitute candidate for the fossil fuel and other vital applications [5,6]. Biodiesel from the microalgae is believed to be the next-generation fuel, since they are easy to grow at faster rate in cost-effective methods.…”

Section: Introductionmentioning

confidence: 99%

Removal of Toxic Metal Presence in the Wastewater and Production of the Biomass from Microalgae Chlorella sp.

Deepak

Anbarasu²,

Velusamy

2022

Journal of Nanomaterials

View full text Add to dashboard Cite

Removal of high toxic metals from the wastewater was one of the mandate options to avoid the environmental pollution caused by the wastewater plant. Microalgae cultivation on the wastewater was one of the hopeful methods to convert the waste into useful by-product. In this study, the Chlorella sp. was used to remove the presence of the total nitrogen (TN) and total phosphorous (TP) in the wastewater. Added to the above, the biomass and lipids of the Chlorella sp. were examined with respect to the incubation time. Chlorella sp. was cultivated using BG11 medium. Here, two different types of wastewater had been used, one from leather industry and other priggery waste. The respective ratio of leather and piggery wastewater used in the current study was 0 : 100, 25 : 75, 50 : 50, 75 : 25, and 100 : 0. The total percentage of the nitrogen and phosphorous removal by the microalgae within 14 days was determined. Based on the findings, it is clear that Chlorella sp. L33 was highly efficient to absorb the nitrate and phosphorous content in the wastewater. With regard to the biomass production, the priggery wastewater treated reported the maximum biomass for 100 μmol/L with 0.55 g/L. However, the 100 μmol/L has higher pH content than other test samples. By varying the ratio of the wastewater, the removals rates can be improved.

show abstract

Recent advances in microalgae-based remediation of industrial and non-industrial wastewaters with simultaneous recovery of value-added products

Cited by 72 publications

References 137 publications

Multiomics approaches and genetic engineering of metabolism for improved biorefinery and wastewater treatment in microalgae

Multiomics approaches and genetic engineering of metabolism for improved biorefinery and wastewater treatment in microalgae

Site-2 Protease Slr1821 Regulates Carbon/Nitrogen Homeostasis during Ammonium Stress Acclimation in Cyanobacterium Synechocystis sp. PCC 6803

Removal of Toxic Metal Presence in the Wastewater and Production of the Biomass from Microalgae Chlorella sp.

Contact Info

Product

Resources

About