Anaerobic digestion of sugarcane bagasse for biogas production and digestate valorization

Agarwal, Nitin Kumar; Kumar, Madan; Ghosh, Pooja; Kumar, Smita S.; Singh, Lakhveer; Vijay, Virendra Kumar; Kumar, Vivek

doi:10.1016/j.chemosphere.2022.133893

Cited by 40 publications

(14 citation statements)

References 77 publications

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“…The corresponding mix proportion based on VS was 17:83 (Table 1), indicating that the synergistic effect requires five-fold more VS from FVW than from SCB, suggesting that a small amount of SCB has a catalytic role when added to FVW. Lower bagasse to co-substrates ratios were also reported in the literature [40] as being essential to achieve higher biodegradability and methane yields, e.g., 35:65 (bagasse: poultry waste) and 40:60 (bagasse: catering waste). When the percentage of SCB mixed with FVW increased from 5% to 10% and 15%, the synergistic effect of the tests decreased, probably due to the minor proportion of FVW in the mixtures and, consequently, lower moisture and availability of organic acids to break the lignocellulose of the SCB.…”

Section: Effect Of Pre-hydrolysis Between Scb + Fvw and Scb + Cw On M...mentioning

confidence: 78%

“…El Achkar et al [43] also reported 20% and 36% higher BMP with grape pomace pretreated with NaOH at 6% and 10% NaOH. Agarwal et al [40] investigated several references for the pretreatment effect applied to SCB using different alkaline solutions with concentrations between 1 and 10% and which also reported α in the range of 3-30%. The K hyd of the pretreated SCB with 5% and 10% NaOH were higher (0.27-0.28 d -1 ) than those of the untreated bagasse (0.20 d -1 ).…”

Section: Effect Of Alkaline Pretreatment On Methane Potential Of Scb ...mentioning

confidence: 99%

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Alkaline Pretreatment and Pre-Hydrolysis Using Acidic Biowastes to Increase Methane Production from Sugarcane Bagasse

Alino

Bastos

Remor

et al. 2022

Methane

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Sugarcane bagasse (SCB) is the main residue obtained from sugarcane processing, and it has been widely investigated as a strategic renewable energy source. The typical recalcitrant characteristic of SCB requires the use of pretreatments (e.g., chemicals) to increase methane production through anaerobic digestion, which is normally reported to generate toxic effluents and increase operational costs. Based on this, the present study evaluated the efficiency of an inexpensive, alternative, and more sustainable method to improve the biodegradability of SCB and increase methane production by pre-storing it with acidic organic biowastes, such as cheese whey (CW) and fruit and vegetable waste (FVW). Different fresh weight-based proportions of FVW (5:95, 10:90, and 15:85) and CW (10:90, 20:80, and 25:75) were soaked with SBC for 7 days at 25 °C. These treatments were compared with traditional alkaline pretreatment using NaOH at concentrations of 1%, 5%, and 10% (w/v). The best result was obtained with SCB + FVW (5:95), being 520 ± 7 NL CH4 kg VS−1 (27.6% higher than the control) with degradation time (T90) reduced from 13 to 7 days. Pretreatment with SBC + CW resulted in antagonistic effects due to process inhibition, while alkaline pretreatment with NaOH at concentrations of 5% and 10% similarly increased methane yield by 21.2% and 34.1%, respectively. Therefore, pre-storage of SBC with FVW proved to be the best strategy to increase methane production from SCB, while simultaneously avoiding the use of chemical reagents that result in toxic effluents.

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Section: Effect Of Pre-hydrolysis Between Scb + Fvw and Scb + Cw On M...mentioning

confidence: 78%

Section: Effect Of Alkaline Pretreatment On Methane Potential Of Scb ...mentioning

confidence: 99%

Alkaline Pretreatment and Pre-Hydrolysis Using Acidic Biowastes to Increase Methane Production from Sugarcane Bagasse

Alino

Bastos

Remor

et al. 2022

Methane

View full text Add to dashboard Cite

show abstract

“…In Figure 3, the main by-products from different foods are shown, and Table 1 summarizes the data found in the literature about the annual production of vegetables and fruits, the percentage and amount of by-products only, as well as their destination. bagasse corresponds to about 30% of the production and main by-product, other residues are generated, such as cane trash, molasses and press mud [36,43,44].…”

Section: Most-representative Fruits and Vegetables Generating Wastementioning

confidence: 99%

“…The alcohol and sugar industries are the major users of this product and, consequently, the main producers of bagasse. Although bagasse corresponds to about 30% of the production and main by-product, other residues are generated, such as cane trash, molasses and press mud [36,43,44].…”

Section: Fruit Waste and By-productsmentioning

confidence: 99%

Food Additives from Fruit and Vegetable By-Products and Bio-Residues: A Comprehensive Review Focused on Sustainability

et al. 2022

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Food waste is one of the fundamental issues when it comes to environmental impacts, and this type of waste results in the food’s loss itself, but also that of water, energy, fertilizers, and other resources used for its production. Many vegetable parts are removed from the final product before reaching retail (peels, roots, and seeds), and these raw materials are rich sources of highly valuable molecules such as phytochemicals, minerals, vitamins, and other compounds with health benefits (prevention of several diseases, improvement of the immune system, regulating gastrointestinal transit, and others). Therefore, substantial efforts have been made to find technological solutions to avoid food waste, namely through its reuse in the food chain, thus promoting the circular economy and sustainability. This review focuses on the biggest wastes generated by the food industry, the most common destinations, and case studies applying these by-products or biowaste in the food industry.

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“…To utilize sugarcane, the soluble sugar-containing juice, serving as a source of chemicals for direct processing or microbial transformation for bioenergy, must be extracted from the plant by physical squeezing/crushing methods, such as using hydraulic pressure ( Wang et al, 2014 ). Wet sugarcane plant contains roughly 36% juice and 64% residue (30% bagasse and 34% straw and leaves), and the latter contains 50% and 10% moisture, respectively ( Ferreira-Leitão et al, 2010 ; Aruna et al, 2021 ; Agarwal et al, 2022 ). The large amount of co-produced sugarcane bagasse (SCB), on the one hand, poses great challenge to processing industries and environment, and on the other hand, might be better utilized as a cheap source to produce value-added products, for example, enzymes, reducing sugars, prebiotic, organic acids, and biofuels ( Alokika et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Valorization of sugarcane bagasse for sugar extraction and residue as an adsorbent for pollutant removal

Wang

Tian

Guan

et al. 2022

Front. Bioeng. Biotechnol.

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Following juice crushing for sugar or bioethanol production from sugarcane, bagasse (SCB) is generated as the main lignocellulosic by-product. This study utilized SCB generated by a hydraulic press as feedstock to evaluate sugar extraction as well as adsorption potential. Total soluble sugar (sucrose, glucose, and fructose) of 0.4 g/g SCB was recovered with H2O extraction in this case. Insoluble sugar, that is, cellulose in SCB, was further hydrolyzed into glucose (2%–31%) with cellulase enzyme, generating a new bagasse residue (SCBE). Persulfate pretreatment of SCB slightly enhanced saccharification. Both SCB and SCBE showed great potential as adsorbents with 98% of methylene blue (MB) removed by SCB or SCBE and 75% of Cu2+ by SCBE and 80% by SCB in 60 min. The maximum adsorption amount (qm) was 85.8 mg/g (MB by SCB), 77.5 mg/g (MB by SCBE), 3.4 mg/g (Cu2+ by SCB), and 1.2 mg/g (Cu2+ by SCBE). The thermodynamics indicated that the adsorption process is spontaneous, endothermic, and more random in nature. The experimental results offer an alternative to better reutilize SCB.

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Anaerobic digestion of sugarcane bagasse for biogas production and digestate valorization

Cited by 40 publications

References 77 publications

Alkaline Pretreatment and Pre-Hydrolysis Using Acidic Biowastes to Increase Methane Production from Sugarcane Bagasse

Alkaline Pretreatment and Pre-Hydrolysis Using Acidic Biowastes to Increase Methane Production from Sugarcane Bagasse

Food Additives from Fruit and Vegetable By-Products and Bio-Residues: A Comprehensive Review Focused on Sustainability

Valorization of sugarcane bagasse for sugar extraction and residue as an adsorbent for pollutant removal

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