Increase in lipid productivity and photosynthetic activities during distillery wastewater decolorization by Chlorella vulgaris cultures

Robati, Seyed Mojtaba Soleymani; Nosrati, Masoud; Ghanati, Faezeh; Hajnowrouzi, Abazar; Grizeau, Dominique; Dupré, Catherine

doi:10.1007/s00253-021-11233-x

Cited by 8 publications

(4 citation statements)

References 42 publications

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“…In this desirability approach, a settable value, namely, RE or biomass growth rate, is introduced to the responses to be maximized by aeration‐response during dynamically changing illumination intensity and photoperiod (Meng et al, 2021). The 3D plots and contour‐lines pots of the quadratic model were formed by maintaining aeration at the central level and altering the other two conditions (illumination intensity and photoperiod) within their ranges (Soleymani Robati et al, 2021). As ambient conditions (illumination intensity and photoperiod) can affect wastewater treatment and biomass production, aeration by air pump can be used for responding to ambient conditions.…”

Section: Resultsmentioning

confidence: 99%

“…On the basis of it, settable value (aeration) can be set in responses to ambient conditions to optimize the effect on wastewater and biomass growth rate. The check can start at zero of the external limit and move toward one as it gets close to the objective (Soleymani Robati et al, 2021). The 3D plots and contour-line pots of the quadratic model were formed by maintaining aeration at the central level and altering the other two conditions (illumination intensity and photoperiod) within their ranges.…”

Section: Aeration-response To Ambient Condition For Optimizationmentioning

confidence: 99%

“…The RE of N and P and biomass growth rate were analyzed, and response surface and contour plots were generated by the Design expert 10 (Soleymani Robati et al, 2021). RSM experiments were carried out with illumination intensity (A), photoperiod (B), and aeration (C) as conditions.…”

Section: Response Surface Analysismentioning

confidence: 99%

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Microalgal–bacterial consortia for efficient wastewater treatment: Optimization using response surface methodology

Jia

et al. 2022

Water Environment Research

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The performance of microalgal–bacterial consortia in wastewater treatment and biomass production needs to be further optimized to meet increasingly stringent effluent standards and operating costs. Besides, due to uncontrollability of ambient conditions, it is generally believed that operating conditions (e.g., aeration) respond to ambient conditions (e.g., illumination). Therefore, response surface methodology (RSM) based on Box–Behnken design was used in this study to analyze the removal of chemical oxygen demand (COD), NH3‐N and TP, and algal biomass of the microalgal–bacterial consortia within 48 h. The results showed that under medium illumination intensity (5000 lx), photoperiod (12:12) and aeration rate (0.55 L min −1), the removal efficiency of COD, NH3‐N and TP was the highest, and the maximal biomass growth rates were 95.43%, 95.49%, 89.42% and 99.63%, respectively. However, as the limited critical removal requirements of TP, the effluent standards can only be achieved within the small illumination intensity and photoperiod available range, even under medium aeration conditions, which means that under fixed operating conditions, the effective operation range will be very limited. In addition, based on RSM and differential equation analysis, the further study indicated that the effective treatment range can be greatly expanded within aeration responding, which meets the discharge standard of pollutants in China. Practitioner points Illumination was responded by aeration for optimizing performance of microalgal–bacterial consortium for wastewater treatment and biomass productivity. The strategy of optimization was based on response surface methodology. The maximum effect on wastewater treatment and biomass productivity was based on partial differential equations and quadratic inhomogeneous equations. Limited to critical TP‐removal requirements, effluent standards can meet only in the small‐usable range of illumination, under medium aeration.

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Section: Resultsmentioning

confidence: 99%

Section: Aeration-response To Ambient Condition For Optimizationmentioning

confidence: 99%

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Microalgal–bacterial consortia for efficient wastewater treatment: Optimization using response surface methodology

Jia

et al. 2022

Water Environment Research

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“…The oleaginous yeast Metschnikowia pulcherrima was grown on distillery wash and could produce fatty-acid methyl esters with a titer of 1.4 g/l after optimization of culture time, pH, and temperature (Anbarasan et al., 2018 ). Recently, it has been shown that the algae Chlorella vulgaris CCAP 211/19 can both remove colorants in this waste stream and produce oleaginous biomass (Soleymani Robati et al., 2021 ), which may be of use for biofuels production. An approximately 30-fold dilution of the distillery wash was used to reduce the COD to 2 g/l, with the purpose of reducing its inhibitory effects (Table 1 ).…”

Section: Other Industrial Wastesmentioning

confidence: 99%

Microbial valorization of underutilized and nonconventional waste streams

Lad

Coleman

Alper

2021

Journal of Industrial Microbiology and Biotechnology

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The growing burden of waste disposal coupled with natural resource scarcity has renewed interest in the remediation, valorization and/or repurposing of waste. Traditional approaches such as composting, anaerobic digestion, use in fertilizers or animal feed, or incineration for energy production extract very little value out of these waste streams. In contrast, waste valorization into fuels and other biochemicals via microbial fermentation is an area of growing interest. In this review, we discuss microbial valorization of nonconventional, aqueous waste streams such as food processing effluents, wastewater streams, and other industrial wastes. We categorize these waste streams as carbohydrate-rich food wastes, lipid-rich wastes, and other industrial wastes. Recent advances in microbial valorization of these nonconventional waste streams are highlighted, along with a discussion of the specific challenges and opportunities associated with impurities, nitrogen content, toxicity, and low productivity.

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Different Wastewater as Growth Medium

Prakash

Vasistha

2023

Microalgae Biotechnology for Wastewater Treatment, Resource Recovery and Biofuels

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Increase in lipid productivity and photosynthetic activities during distillery wastewater decolorization by Chlorella vulgaris cultures

Cited by 8 publications

References 42 publications

Microalgal–bacterial consortia for efficient wastewater treatment: Optimization using response surface methodology

Microalgal–bacterial consortia for efficient wastewater treatment: Optimization using response surface methodology

Microbial valorization of underutilized and nonconventional waste streams

Different Wastewater as Growth Medium

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