Production of biogas and biofertilizer using anaerobic reactors with swine manure and glycerin doses

Veroneze, Maria Luiza; Schwantes, Daniel; Gonçalves, Affonso Celso; Richart, Alfredo; Manfrin, Jéssica; Schiller, Andréia da Paz; Schuba, Thiago Bana

doi:10.1016/j.jclepro.2018.12.181

Cited by 36 publications

(8 citation statements)

References 30 publications

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“…Oliveira et al [54] noted that codigesting 2% CG with sargassum resulted in 18% more methane as compared with the control treatment, while Schwingel et al [2] showed that co-digesting 2.6% glycerol with laying hen manure produced 21.83% more methane than the manure without glycerol. Veroneze et al [55] indicated that inhibition of methane production from swine manure when more than 5% of glycerol was added.…”

Section: Impact Of Feedstock Concentration and Cg Level On Bmp Of Jpcmentioning

confidence: 99%

Alkaline and co-digestion pretreatments: process optimization for enhancing the methane yield of Jatropha press cake

Ewunie

Morken

Yigezu

2020

Biomass Conv. Bioref.

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Oil extraction and biodiesel production process produce a massive amount of by-products like Jatropha press cake (JPC) and crude glycerol (CG), which could be used as a potential substrate for methane production. However, the higher lignocellulosic and nitrogen content in the JPC act as a recalcitrant and inhibitor, respectivly, for microbes that are involved in the anaerobic digestion (AD) process. Therefore, the present study aimed to enhance the methane yield of JPC by optimizing the alkaline pretreatment and co-digestion process conditions. The effects of NaOH concentration, incubation temperature, and retention time on methane and soluble chemical oxygen demand (sCOD) yields were evaluated and modeled by employing a response surface methodology coupled with central composite design (RSM-CCD). Moreover, a series of batch experiments with various feedstock concentrations (FCs) were tested to investigate the methane yield of JPC when co-digested with CG at different levels. The methane yields of all pretreated samples were significantly higher when compared with these of the untreated JPC. Pretreating the JPC using 7.32% NaOH at 35.86 °C for 54.05 h was the optimum conditions for maximum methane increment of 40.23% (353.90 mL g−1 VS), while co-digesting 2% CG with JPC at 2 g VS L−1 FC enhanced the methane yield by 28.9% (325.47 mL g−1 VS). Thus, the methane yield of JPC was effectively increased by alkaline pretreatment and co-digesting with CG. However, the alkaline pretreatment was relatively more effective compared with the co-digestion process.

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Section: Impact Of Feedstock Concentration and Cg Level On Bmp Of Jpcmentioning

confidence: 99%

Alkaline and co-digestion pretreatments: process optimization for enhancing the methane yield of Jatropha press cake

Ewunie

Morken

Yigezu

2020

Biomass Conv. Bioref.

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“…In addition, only 30.7% of COD removal was veri ed in R2, con rming that the fermentation occurred, resulting in an e uent with COD of 8933 mg L −1 . Veroneze et al [43] also observed COD low removal while evaluating the biodigestion of swine manure with the addition of crude glycerin doses for biogas production in alternative biodigesters without stirring.…”

Section: Second Stage: Methanogenesis Reactor (R2)mentioning

confidence: 99%

Bioconversion of Crude Glycerol to Hydrogen and Methane in Three-Stage Horizontal Anaerobic Fixed-Bed Reactors (HARFB)

Adames

Jacobus

Sakamoto

et al. 2021

Preprint

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The anaerobic conversion of residual glycerol from biodiesel production is an excellent option for producing clean energy at a low cost. Crude glycerol (CG) is an excellent carbon source for microorganisms in Anaerobic Digestion (AD) process; however, it is a nutrient-limited waste. On the other hand, domestic Sewage (DS) is wastewater containing macronutrients, such as nitrogen and phosphorus. Therefore, feeding bioreactors with a blend of both wastes is an exciting approach. The objective of this study was to operate a system consisting of three horizontal anaerobic series reactors (HARFB) with fixed bed (R1, R2, and R3), fed with a mixture of crude glycerol and domestic sewage to evaluate the start-up strategy and best organic loading rate (OLR) to improve biogas production (H2 e CH4) as well as to analyze the dynamic changes in the anaerobic microbial consortium during the operation of the HARFB. The highest hydrogen generation was 10.3 moles H2 (m3 d-1) in reactor R1, and the highest methane yield was 312.0 and 283.9 L CH4 (m3 d-1) in R2 and R3, respectively. The three-stage system showed high efficiency in removing crude glycerol and Chemical Oxygen Demand (COD), with consumptions of 99.9%. In addition, there was a change in the relative abundance of microorganisms amongst R1, R2, and R3 and a considerable decrease in the diversity index in the fermentation reactor (R1). The results have shown the potential of applying HARFB reactors for energy recovery and alternative waste disposal.

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“…Digestates are mainly used for agricultural purposes: swine manure is biomass with value as a biofertilizer (Veroneze et al, 2019). Inadequate management can lead to the contamination of water courses, groundwater, soil and air, and these problems impede the sustainability and expansion of swine farming as an economic activity (Kunz et al, 2009).…”

Section: Nutrient and Energy Potential From Swine Chain Farm Residuesmentioning

confidence: 99%

Nutritional, Energy and Sanitary Aspects of Swine Manure and Carcass Co-digestion

Tápparo

Rogovski

Cadamuro

et al. 2020

Front. Bioeng. Biotechnol.

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Renewable energy can assist the management of the effects of population growth and rapid economic development on the sustainability of animal husbandry. The primary aim of renewable energy is to minimize the use of fossil fuels via the creation of environmentally friendly energy products from depleted fossil fuels. Digesters that treat swine manure are extensively used in treatment systems; and inclusion of swine carcasses can increase the organic loading rate (OLR) thereby improving biogas yield and productivity on farms. However, the characteristics of the components including animal residues, proteins, lipids, remains of undigested feed items, antimicrobial drug residues, pathogenic microorganisms and nutrient contents, are complex and diverse. It is therefore necessary to manage the anaerobic process stability and digestate purification for subsequent use as fertilizer. Efficient methane recovery from residues rich in lipids is difficult because such residues are only slowly biodegradable. Pretreatment can promote solubilization of lipids and accelerate anaerobic digestion, and pretreatments can process the swine carcass before its introduction onto biodigesters. This review presents an overview of the anaerobic digestion of swine manure and carcasses. We analyze the characteristics of these residues, and we identify strategies to enhance biogas yield and process stability. We consider energy potential, co-digestion of swine manure and carcasses, physical, chemical, and biological pretreatment of biomass, sanitary aspects of swine manure and co-digestates and their recycling as fertilizers.

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Production of biogas and biofertilizer using anaerobic reactors with swine manure and glycerin doses

Cited by 36 publications

References 30 publications

Alkaline and co-digestion pretreatments: process optimization for enhancing the methane yield of Jatropha press cake

Alkaline and co-digestion pretreatments: process optimization for enhancing the methane yield of Jatropha press cake

Bioconversion of Crude Glycerol to Hydrogen and Methane in Three-Stage Horizontal Anaerobic Fixed-Bed Reactors (HARFB)

Nutritional, Energy and Sanitary Aspects of Swine Manure and Carcass Co-digestion

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