Techno-Economic Assessment of Anaerobic Co-digestion of Cattle Manure and Wheat Straw (Raw and Pre-treated) at Small to Medium Dairy Cattle Farms

Imeni, Seyed Mostafa; Puy, Neus; Ovejero, Jonatan; Busquets, Anna María; Bartrolı́, Jordi; Pelaz, L.; Ponsá, Sergio; Colón, Joan

doi:10.1007/s12649-019-00728-4

Cited by 30 publications

(12 citation statements)

References 36 publications

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“…For instance, annual crops such as corn have a threshold salt tolerance at 1.7 dS m −1 (corresponding at 1.7 mM), while thresholds for tomato and barley are 2.5 dS m −1 and 8 dS m −1 , respectively 52 . In a recent study, alkali pretreatment of straw (10 gL −1 NaOH per g of straw, 121°C for 60 min) was showed to improve methane yields by 156% 53 . However, the price of NaOH chemical and energy for the pretreatment of straw in the above study were the main factors influencing the net value and their usage (performed at an organic loading of 1 to 2 kgVS m −3 d −1 ) 53 .…”

Section: Resultsmentioning

confidence: 90%

“…In a recent study, alkali pretreatment of straw (10 gL −1 NaOH per g of straw, 121°C for 60 min) was showed to improve methane yields by 156% 53 . However, the price of NaOH chemical and energy for the pretreatment of straw in the above study were the main factors influencing the net value and their usage (performed at an organic loading of 1 to 2 kgVS m −3 d −1 ) 53 . Thus, continuous reactor studies are needed to evaluate the economic and environmental benefits of recycling black liquor and also to investigate the technical and economic feasibility of black liquor recycling.…”

Section: Resultsmentioning

confidence: 99%

“…53 However, the price of NaOH chemical and energy for the pretreatment of straw in the above study were the main factors influencing the net value and their usage (performed at an organic loading of 1 to 2 kgVS m −3 d −1 ). 53 Thus, continuous reactor studies are needed to evaluate the economic and environmental benefits of recycling black liquor and also to investigate the technical and economic feasibility of black liquor recycling. In addition, a way to improve the overall economics of a biorefinery system could be to recover phenols.…”

Section: Economic Feasibility Of Thermo-chemical Pretreatment and Black Liquor Recycling Usedmentioning

confidence: 86%

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Reduction of the environmental footprint of thermo‐alkali pretreatment by reusing black liquor during anaerobic digestion of lignocellulosic biomasses

Peyrelasse

Kaparaju

Lallement³

et al. 2021

Biofuels Bioprod Bioref

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In this study, the effect of thermo‐alkaline pretreatment and recycling of the liquid fraction (black liquor) for successive pretreatment steps on chemical composition and methane yields from horse manure was investigated. At first, horse manure was subjected to alkaline pretreatment at 70 °C for 1 h (8.6 g NaOH/100 g total solids). Pretreated biomass was then separated into solid and liquid fractions (black liquor). In the subsequent stages, black liquor was mixed with 20% (v/v) of fresh NaOH and was reused to pretreat subsequent batches of horse manure (cycles 1–4). Chemical analyses showed that thermo‐alkaline pretreatment was effective in the delignification and solubilization of organic matter and thereby increased the holocellulose (cellulose and hemicelluloses) content in the solid fraction of horse manure. On comparison with untreated horse manure methane yields (225 ± 1 L CH4 kg−1 VSadded), thermo‐alkaline pretreatment improved the methane yields of horse manure by 39% (313 ± 16 L CH4 kg−1 VSadded). However, the effectiveness of black liquor recycling on methane production decreased (from 39 to 12%) with an increase in the number of recycling steps (from 1 to 4). Nevertheless, recycling of black liquor reduced the consumption of NaOH (40%) and water use (60%). Thus, thermo‐alkaline pretreatment with liquor recycling was found to be an effective pretreatment with an economic gain of 2.4 to 10.4 compared to pretreatment without recycling. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd

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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Economic Feasibility Of Thermo-chemical Pretreatment and Black Liquor Recycling Usedmentioning

confidence: 86%

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Reduction of the environmental footprint of thermo‐alkali pretreatment by reusing black liquor during anaerobic digestion of lignocellulosic biomasses

Peyrelasse

Kaparaju

Lallement³

et al. 2021

Biofuels Bioprod Bioref

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“…Applied research associated with new technological developments is required to increase biogas production by increasing reactor efficiency and making anaerobic digestion a cost-effective process capable of producing a sustainable fuel with similar characteristics to natural gas [ 134 ]. Imeni et al [ 141 ] performed a techno-economic assessment for a digestion plant associated with a livestock farm of 250 adult cattle heads. These authors reported that revenues generated from anaerobic mono-digestion could not offset the initial required investment, thus establishing clear numbers to what is recognized in the industrial digestion sector.…”

Section: Technical and Economic Feasibility Of Anaerobic Digestionmentioning

confidence: 99%

Anaerobic Digestion for Producing Renewable Energy—The Evolution of This Technology in a New Uncertain Scenario

Arenas

Pesantes

Carpio

et al. 2021

Entropy

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Anaerobic digestion is a well-known technology with wide application in the treatment of high-strength organic wastes. The economic feasibility of this type of installation is usually attained thanks to the availability of fiscal incentives. In this review, an analysis of the different factors associated with this biological treatment and a description of alternatives available in literature for increasing performance of the process were provided. The possible integration of this process into a biorefinery as a way for producing energy and chemical products from the conversion of wastes and biomass also analyzed. The future outlook of anaerobic digestion will be closely linked to circular economy principles. Therefore, this technology should be properly integrated into any production system where energy can be recovered from organics. Digestion can play a major role in any transformation process where by-products need further stabilization or it can be the central core of any waste treatment process, modifying the current scheme by a concatenation of several activities with the aim of increasing the efficiency of the conversion. Thus, current plants dedicated to the treatment of wastewaters, animal manures, or food wastes can become specialized centers for producing bio-energy and green chemicals. However, high installation costs, feedstock dispersion and market distortions were recognized as the main parameters negatively affecting these alternatives.

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“…AD of cattle manure (CM) in combination with lignocellulosic waste has been proven by many studies to increase the methane yield obtained from the AD process. [38][39][40][41] In addition, there are a large number of studies on the anaerobic co-digestion of CM in the literature, along with food industry wastes, 42,43 municipal solid wastes, 31,32 fish-based wastes, 33 algae sludges, and wastewater sludges. 34…”

Section: Introductionmentioning

confidence: 99%

Enhancement in methane yield from anaerobic co‐digestion of walnut shells and cattle manure

Şenol

2020

Env Prog and Sustain Energy

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In this study, anaerobic co-digestion was investigated for mixtures of walnut shells (WS) and cattle manure (CM), which are lignocellulosic wastes, in various different carbon: nitrogen (C/N) ratios. The best mixing ratio for WS and CM in anaerobic digestion (AD) was determined to be 1:3, offering a methane yield of 173.2 ml/g volatile solid (VS) added. Effects of various alkaline pretreatments including calcium hydroxide (Ca(OH) 2), sodium hydroxide (NaOH) and potassium hydroxide (KOH) were studied in the concentration range 1-5% wt/wt for the best mixing ratio of WS and CM. The optimal KOH and NaOH concentrations were each found to be 4%, giving methane yields of 312.6 ± 5.1 and 342.5 ± 9.6 ml/g VS added , respectively, where these yields were found to increase by 80.5 and 97.2%, respectively, compared to the control reactor. By contrast, a 3% Ca(OH) 2 concentration was found to increase the methane yield by 67% compared to the untreated reactor. NaOH pretreatments resulted in relatively higher lignocellulosic solubilization and soluble chemical oxygen demand compared to KOH and Ca(OH) 2 pretreatments. This study contributes to our understanding of the alkaline pretreatment in taking advantage of CM and WS for methane productions in future applications.

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Techno-Economic Assessment of Anaerobic Co-digestion of Cattle Manure and Wheat Straw (Raw and Pre-treated) at Small to Medium Dairy Cattle Farms

Cited by 30 publications

References 36 publications

Reduction of the environmental footprint of thermo‐alkali pretreatment by reusing black liquor during anaerobic digestion of lignocellulosic biomasses

Reduction of the environmental footprint of thermo‐alkali pretreatment by reusing black liquor during anaerobic digestion of lignocellulosic biomasses

Anaerobic Digestion for Producing Renewable Energy—The Evolution of This Technology in a New Uncertain Scenario

Enhancement in methane yield from anaerobic co‐digestion of walnut shells and cattle manure

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