Current advances in biological swine wastewater treatment using microalgae-based processes

Nagarajan, Dillirani; Kusmayadi, Adi; Yen, Hong Wei; Dong, Cheng-Di; Lee, Dong Hoon; Chang, Jo‐Shu

doi:10.1016/j.biortech.2019.121718

Cited by 204 publications

(52 citation statements)

References 116 publications

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“…The high concentration of NH4 + -N was detrimental to algal cells due to the free ammonia [8]. In addition, high levels of salts (Table 1) could also affect the nutrient assimilation and metabolism of microalgae, and even threaten its growth, due to high osmotic pressure [3]. Thus, the pig urine needed to be diluted; a dilution rate of 8:1 was found to be optimal, according to this study.…”

Section: Optimization Of C Vulgaris Growth Conditions In Pig Urinementioning

confidence: 82%

“…Anaerobic digestion (AD) has been widely acknowledged as an effective method to process piggery waste, around the world [3]. AD converts complex organic matter in pig manure into biogas.…”

Section: Introductionmentioning

confidence: 99%

“…The high concentration of NH 4 + -N (≥ 200 mg•L −1 ) in fresh pig urine is toxic to the growth of microalgae due to the formation of free ammonia [8]. This could affect the photosynthetic processes in chloroplasts, electron transport chain, non-photochemical quenching, as well as the dark respiration [9], which can decrease the chlorophyll-A content and cause cell lysis of the microalgae [2,3]. In addition, high pH (commonly higher than 8.5) in pig urine can also induce the flocculation of microalgal cells [10] and decrease its population growth [11].…”

Section: Introductionmentioning

confidence: 99%

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Cultivation of Chlorella vulgaris in a Light-Receiving-Plate (LRP)-Enhanced Raceway Pond for Ammonium and Phosphorus Removal from Pretreated Pig Urine

et al. 2020

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Fresh pig urine is unsuitable for microalgae cultivation due to its high concentrations of NH4+-N, high pH and insufficient magnesium. In this study, fresh pig urine was pretreated by dilution, pH adjustment, and magnesium addition in order to polish wastewater and produce microalgae biomass. Chlorella vulgaris was cultured in an in-house-designed light-receiving-plate (LRP)-enhanced raceway pond to treat the pretreated pig urine in both batch and continuous mode under outdoor conditions. NH4+-N and TP in wastewater were detected, and the growth of C. vulgaris was evaluated by chlorophyll fluorescence activity as well as biomass production. Results indicated that an 8-fold dilution, pH adjusted to 6.0 and MgSO4·7H2O dosage of 0.1 mg·L−1 would be optimal for the pig urine pretreatment. C. vulgaris could stably accumulate biomass in the LRP-enhanced raceway pond when cultured by both BG11 medium and the pretreated pig urine. About 1.72 g·m−2·day−1 of microalgal biomass could be produced and 98.20% of NH4+-N and 68.48% of TP could be removed during batch treatment. Hydraulic retention time of 7-9d would be optimal for both efficient nutrient removal and microalgal biomass production during continuous treatment.

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Section: Optimization Of C Vulgaris Growth Conditions In Pig Urinementioning

confidence: 82%

“…Anaerobic digestion (AD) has been widely acknowledged as an effective method to process piggery waste, around the world [3]. AD converts complex organic matter in pig manure into biogas.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cultivation of Chlorella vulgaris in a Light-Receiving-Plate (LRP)-Enhanced Raceway Pond for Ammonium and Phosphorus Removal from Pretreated Pig Urine

et al. 2020

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“…The nutrients removal efficiency of microalgae-based is higher in comparison with conventional systems for the high levels of N and P present in the wastewater. For example, the polluted water by animals like cattle, swine, and poultry contain more ammonia, although microalgae show higher performance [5].…”

Section: Advantage Of Microalgae-based Wastewater Treatmentmentioning

confidence: 99%

Integration of microalgae culture as a natural-based solution for wastewater treatment

Khalil

El-Baz

Ficara

2021

The Egyptian International Journal of Engineering Sciences and

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The age of Anthropocene makes it imperative that we find ways to tackle pollution and to stay within planetary boundaries limits, one of these boundaries is nutrients availability. From a planetary boundaries point of view, the release of new reactive nitrogen should be 25% of the current level, equal to a yearly release of about 35 million tons. Instead of discharging N-and P-rich wastewater into coastal and inland waters, the use of the same microalgae growth for useful purposes in microalgae-based wastewater treatment, since cultivation of algae requires the addition of nutrients; mainly nitrogen, phosphorus and potassium. In turn, a cost reduction in nutrients removal phase in wastewater treatment stages, and water reclamation for reuse and maintenance of ecological balance in aquatic and terrestrial ecosystems. Therefore, this work deals with the nutrients and the eutrophication issue in a nature-based solution and aims to investigate the ability of a green microalgae to remove nitrogen and phosphorus from the hypereutrophic water and try to investigate the ability of microalgae in producing biogas to reduce the consumption of fossil fuels and greenhouse gas emissions.

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“…Anaerobic digestion (AD) is a useful technology to treat swine manure [ 1 ], which generates biogas as a green energy but a large volume of digestate at the same time [ 2 ]. The digestate is rich in nitrogen, phosphorus, potassium, amino acid, and other biologically active substances [ 3 , 4 , 5 ], which can be utilized as organic fertilizer [ 6 ] to improve plant growth and quality [ 7 ]. However, the large volume of digestate could exceed the soil receiving capacity by irrigation [ 3 , 8 ], direct discharge to crop field will pose a high pollution risk to the environment due to runoff and seepage [ 4 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Pretreatment on Hydraulic Performance of the Integrated Membrane Process for Concentrating Nutrient in Biogas Digestate from Swine Manure

et al. 2020

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Nanofiltration (NF) or reverse osmosis (RO) process has been widely applied for concentrating nutrient in biogas digestate. However, efficient pretreatment is key to the sustainable operation of NF or RO. In this study, the combination of NF and RO for concentrating biogas digestate was compared using different pretreatments of hollow fiber ultrafiltration membrane (HFUFM) and ceramic membrane (CUFM). Pilot-scale batch tests were conducted (500 L). CUFM showed a higher membrane flux than HFUFM (100 ~ 180 L·(m2·h)−1 vs. 17 ~ 35 L·(m2·h)−1), but they showed little impact on the NF + RO process. Membrane fluxes of NF and RO were 20 ~ 48 L·(m2·h)−1 and 16 ~ 40 L·(m2·h)−1, respectively. In the RO permeates, the removal rates of total suspended solids (TSS), total solids (TS), chemical oxygen demand (COD), total nitrogen (TN), NH4+-N, and Cl− were above 91%. In the concentrates, TN and total potassium (TK) were concentrated by 1.60 and 2.00 folds in the NF stage, and by 2.10 and 2.30 folds in the RO stage. Further attention should be paid to the antibiotics risks in the concentrates before they are utilized as plant fertilizers.

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Current advances in biological swine wastewater treatment using microalgae-based processes

Cited by 204 publications

References 116 publications

Cultivation of Chlorella vulgaris in a Light-Receiving-Plate (LRP)-Enhanced Raceway Pond for Ammonium and Phosphorus Removal from Pretreated Pig Urine

Cultivation of Chlorella vulgaris in a Light-Receiving-Plate (LRP)-Enhanced Raceway Pond for Ammonium and Phosphorus Removal from Pretreated Pig Urine

Integration of microalgae culture as a natural-based solution for wastewater treatment

Effect of Pretreatment on Hydraulic Performance of the Integrated Membrane Process for Concentrating Nutrient in Biogas Digestate from Swine Manure

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