Stress of cupric ion and oxytetracycline in Chlorella vulgaris cultured in swine wastewater

Luo, Yun; Li, Xiang; Lin, Yan; Wu, Shaohua; Cheng, Jay J.; Yang, Chunping

doi:10.1016/j.scitotenv.2023.165120

Cited by 13 publications

(1 citation statement)

References 82 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, biological treatments contribute to enhanced sludge formation and subsequent CO 2 emission during reduction in heavy organic load from winery wastewater. , The anaerobic digestion process, used widely to convert organics into a renewable energy (biogas), is unviable for medium- and small-scale wineries because of the high capital and maintenance costs. Over the years, the use of microalgae-based remediation of various types of wastewater for biofuel production has been shown to increase the sustainability and efficiency of the process besides reducing the cost of treatment. − …”

Section: Introductionmentioning

confidence: 99%

Leveraging Phenotypic Traits in Microalgae: A Novel Strategy for Wastewater Treatment and Sustainable Biomass Production

Praveen,

Abinandan,

Venkateswarlu

et al. 2023

ACS EST Water

View full text Add to dashboard Cite

Wastewater utilization by microalgal strains is due to changes in the inherent phenotypic traits that enable metabolic flexibility, facilitating their adaptation to survive in harsh environments. However, the potential role of changed phenotypic traits such as physiological and metabolic activities required for enhanced biomass production remains largely underexplored. In this study, involving acid-tolerant microalgal strains, Desmodesmus sp. MAS1 and Heterochlorella sp. MAS3, we observed a timedependent growth increase (>300% after 1 week) under mixotrophic conditions. While transitioning to the second week, there was a change in growth pattern, with >600% increase in chlorophyll content and minor pH alterations, indicating the phenotypic response to the synergistic effect of nutritional mode during wastewater treatment. Both the strains showed a similar removal (70−80%) of both organic and inorganic carbon present in the wastewater, while the removal of nitrogen and phosphate (80−90%) was significant during mixotrophy. Metabolic analysis revealed the prominence of key pathways such as CO 2 fixation, nitrogen assimilation, and amino acid metabolism under mixotrophic conditions of an open system. Especially, strain MAS1 exhibited elevated expression of organic acids, suggesting their crucial role in nutrient uptake from winery effluents during mixotrophy. Thus, our study demonstrates that a synergy of wastewater environment and nutritional mode enhances phenotypic trait expression in microalgae to improve metabolic flexibility and sustainable biomass production.

show abstract