Cultivation of Chlorella sp. using raw dairy wastewater for nutrient removal and biodiesel production: Characteristics comparison of indoor bench-scale and outdoor pilot-scale cultures

Lu, Weidong; Wang, Zhongming; Wang, Xuewei; Yuan, Zhenhong

doi:10.1016/j.biortech.2015.05.094

Cited by 138 publications

(29 citation statements)

References 27 publications

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“…Another study also reported that the growth of Chlorella sp. in dairy waste water can recover nitrogen and phosphorus by 85 and 100% (Lu et al, 2015). This study suggests that TN and TP of flushed dairy manure can be reduced by algal biomass considerably depending on the treatment conditions.…”

Section: Discussionmentioning

confidence: 99%

Assessing Nutrient Removal Kinetics in Flushed Manure Using Chlorella vulgaris Biomass Production

Pandey

Shi

2017

Front. Bioeng. Biotechnol.

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The utilization of dairy wastewater for producing algal biomass is seen as a two-fold opportunity to treat wastewater and produce algae biomass, which can be potentially used for production of biofuels. In animal agriculture system, one of the major waste streams is dairy manure that contains high levels of nitrogen and phosphorus. Furthermore, it is produced abundantly in California’s dairy industry, as well as many other parts of the world. We hypothesized that flushed manure, wastewater from a dairy farm, can be used as a potential feedstock after pretreatment to grow Chlorella vulgaris biomass and to reduce nutrients of manure. In this study, we focused on investigating the use of flushed manure, produced in a dairy farm for growing C. vulgaris biomass. A series of batch-mode experiments, fed with manure feedstock and synthetic medium, were conducted and corresponding C. vulgaris production was analyzed. Impacts of varying levels of sterilized manure feedstock (SMF) and synthetic culture medium (SCM) (20–100%) on biomass production, and consequential changes in total nitrogen (TN) and total phosphorus (TP) were determined. C. vulgaris production data (Shi et al., 2016) were fitted into a model (Aslan and Kapdan, 2006) for calculating kinetics of TN and TP removal. Results showed that the highest C. vulgaris biomass production occurs, when SMF and SCM were mixed with ratio of 40%:60%. With this mixture, biomass on Day 9 was increased by 1,740% compared to initial biomass; and on Day 30, it was increased by 2,456.9%. The production was relatively low, when either only SCM or manure feedstock medium (without pretreatment, i.e., no sterilization) was used as a culture medium. On this ratio, TN and TP were reduced by 29.9 and 12.3% on Day 9, and these reductions on Day 30 were 76 and 26.9%, respectively.

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Section: Discussionmentioning

confidence: 99%

Assessing Nutrient Removal Kinetics in Flushed Manure Using Chlorella vulgaris Biomass Production

Pandey

Shi

2017

Front. Bioeng. Biotechnol.

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“…Using an outdoor 40L PBR, Chlorella sp. was able to reach removal rates of 41.31, 6.58, and 2.74 mg/L/day for COD, total nitrogen (TN) and total phosphorus (TP) respectively when grown on a dairy wastewater [41]. Microalgae can also process oil refinery wastewaters: 97% reduction of ammonium, 69% reduction of TN and 90% reduction in TP have been obtained after three days of batch treatment [42].…”

Section: Industrial or Agricultural Wastewater Treatmentmentioning

confidence: 96%

The Environmental Biorefinery: Using Microalgae to Remediate Wastewater, a Win-Win Paradigm

et al. 2016

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Abstract:Microalgae have been shown to be a source of multiple bio-based products ranging from high value molecules to commodities. Along with their potential to produce a large variety of products, microalgae can also be used for the depollution of wastewaters of different origins (urban, industrial, and agricultural). This paper is focused on the importance of harnessing the bioremediation capacity of microalgae to treat wastewaters in order to develop the microalgae industry (especially the microalgae biofuel industry) and to find other alternatives to the classic wastewater treatment processes. The current research on the potential of microalgae to treat a specific wastewater or a targeted pollutant is reviewed and discussed. Then, both strategies of selecting the best microalgae strain to treat a specific wastewater or pollutant and using a natural or an artificial consortium to perform the treatment will be detailed. The process options for treating wastewaters using microalgae will be discussed up to the final valorization of the biomass. The last part is dedicated to the challenges which research need to address in order to develop the potential of microalgae to treat wastewaters.

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“…Interest in microalgal based wastewater treatment (MWT) has grown since it has potential to be an attractive and economical alternative for wastewater remediation along with production of valuable biomass (Chisti 2007;McGinn et al 2012;Lu et al 2015). Microalgae offer an elegant wastewater treatment solution for agricultural run-off, food and agro-based industry, industrial and municipal wastewaters due to the ability of microalgae to assimilate carbon (C), nitrogen (N) and phosphorus (P) (del Morales-Amaral et al 2015), their capacity to remove heavy metals (Suresh Kumar et al 2015), as well as some toxic organic compounds (Matamoros et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Integration of microalgal cultivation system for wastewater remediation and sustainable biomass production

Gupta

Lee

Choi

2016

World J Microbiol Biotechnol

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Untreated wastewaters have been a great concern and can cause major pollution problems for environment. Conventional approaches for treating wastewater involve tremendous capital cost, have major short comings and are not sustainable. Microalgae culture offers an interesting step for wastewater treatment. Microalgae serve the dual purpose of phycoremediation along with the production of potentially valuable biomass, which can be used for several purposes. The ability of microalgae to accumulate nitrogen, phosphorus, heavy metals and other toxic compounds can be integrated with wastewater treatment system to offer an elegant solution towards tertiary and quaternary treatment. The current review explores possible role of microalgal based wastewater treatment and explores the current progress, key challenges, limitations and future prospects with special emphasis on strategies involved in harvesting, boosting biomass and lipid yield.

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Cultivation of Chlorella sp. using raw dairy wastewater for nutrient removal and biodiesel production: Characteristics comparison of indoor bench-scale and outdoor pilot-scale cultures

Cited by 138 publications

References 27 publications

Assessing Nutrient Removal Kinetics in Flushed Manure Using Chlorella vulgaris Biomass Production

Assessing Nutrient Removal Kinetics in Flushed Manure Using Chlorella vulgaris Biomass Production

The Environmental Biorefinery: Using Microalgae to Remediate Wastewater, a Win-Win Paradigm

Integration of microalgal cultivation system for wastewater remediation and sustainable biomass production

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