The conversion of lignocellulosic biomass to bioethanol: pretreatment technology comparison

Wardani, Agustin Krisna; Tanaka, Noriko; Sutrisno, Aji

doi:10.1088/1755-1315/475/1/012081

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…Total solids (TS) and volatile solids (VS) were determined according to Standard Methods. 38 Lignocellulose contents of the substrate and inoculum were determined using the Chesson method as described by Wardani et al 39 The pH of the sludge was measured with a microprocessor pH metre (pH 212, Hanna Instruments), while the electrical conductivity (EC) was measured with a conductivity metre (ES 215, Hanna Instruments). The carbon (C) and nitrogen (N) elements were established with Flash2000 Organic Elemental Analyser (ThermoFisher Scientific).…”

Section: Methodsmentioning

confidence: 99%

The effects of Trichoderma atroviride pretreatment on the biogas production from anaerobic digestion of water hyacinth

Ilo

Nkomo

Mkhize

et al. 2022

Energy & Environment

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Water hyacinth is an invasive alien plant with several impacts on the environment, economy and society. The plant’s high degree of proliferation makes its mitigation difficult and sometimes complex. However, existing evidence suggests that water hyacinth is a sustainable substrate for biogas production. Using the pretreatment processes for the optimisation conditions for biogas production from water hyacinth, this study analysed the effects of moisture content (60%, 70% and 75%) on Trichoderma atroviride pretreatment of water hyacinth and the impact of the pretreatment on biogas production. Anaerobic digestion of the water hyacinth process was performed at 35°C for 35 days. The modified Gompertz model was used to analyse and predict the appropriate kinetic variables of the digestion process. Biogas yields from untreated, pretreated-60%, pretreated-70% and pretreated-75% were optimal at 135, 210, 217 and 223.4 mL/g of volatile solids (VS). These results suggest the pretreatment of water hyacinth enhanced the degradability of water hyacinth by breaking down the cell wall structure and facilitating its use by microorganisms. Furthermore, the results also confirmed that the higher the moisture content, the easier the biodegradation rate and, consequently, the higher the biogas yield. The model predicted maximum methane production potential ranging from 91.84 to 201 mL/g VS, and the maximum methane yield rate was within 10.12–15.12 mL/day. The lag phase varied between 2.46 and 6.94 days. The percentage error between experimental and model outcomes for untreated, pretreated-60%, pretreated-70% and pretreated-75% are 17.96%, 16.67%, 14.20% and 4.68%, respectively, while the coefficients of determination of the model varied between 0.905 and 0.975, demonstrating significant reliability on attained factors.

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Section: Methodsmentioning

confidence: 99%

The effects of Trichoderma atroviride pretreatment on the biogas production from anaerobic digestion of water hyacinth

Ilo

Nkomo

Mkhize

et al. 2022

Energy & Environment

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“…Penelitian ini mendapatkan hasil bahwa kadar etanol sampah daun yang diberikan pretreatment lebih tinggi daripada kadar etanol dari sampah daun yang tidak diberikan pretreatment. Pretreatment merupakan tahap utama keberhasilan pemanfaatan bahan baku lignoselulosa untuk menghasilkan bioetanol karena memfasilitasi hidrolisis oleh enzim [34,35].…”

Section: Pembahasanunclassified

Effect of Pretreatment and Composition of Trichoderma Viride and Zymomonas Mobilis Consortium on Bioethanol Production from Leaf Litter

Safari¹,

Syafaat²

2022

IJOBB

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Bioethanol is an alternative biofuel that is widely produced in bulk to replace and complement petroleum-based fuels. Bioethanol is produced through the alcoholic fermentation of sucrose or simple sugars. One of the potential source for bioethanol production that has not been studied is leaf litter. Various studies have shown that T. viride and Z. mobilis can be used for bioethanol production, but there has been no report on the production of bioethanol from leaf litter using a consortium of T. viride and Z. mobilis using the SSF method. This study aims to examine the effect of pretreatment and composition of the consortium of T. viride and Z. mobilis on the production of bioethanol from leaf litter. Leaf litter was dried and mashed, then pretreatment was carried out with 32% NH3 solution. The bioethanol production process using the SSF method uses a consortium of T. viride and Z. mobilis with a composition of 5%: 5%, 10%: 5%, 5%: 10% and 10%: 10% (w/v). SSF was carried out for 72 hours at a temperature of 35oC and pH 5. The bioethanol was purified by distillation and the ethanol content was tested with GCMS. Higher levels of bioethanol were found in leaf litter with pretreatment than without pretreatment. The highest ethanol content (0.6721%) was obtained from SSF with consortium composition of T. viride : Z. mobilis (10% : 10%) from leaf litter with pretreatment. Pretreatment and composition of the consortium T. viride and Z. mobilis affect the production of bioethanol from leaf litter.

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“…The pretreatment technologies that have been industrialized are shown in Table 3. A pretreatment capable of industrialization should be fulfilled the following conditions: it is simple, feasible, cheap in terms of equipment; it has less environmental pollution, high saccharification efficiency of raw materials, less carbohydrate loss, and less by-products; it has good compatibility with fermentation process [49][50][51][52].…”

Section: Solution Of Raw Materials Pretreatmentmentioning

confidence: 99%

Industrialization progress of lignocellulosic ethanol

Wang¹,

Bilal

Tan

et al. 2021

Syst Microbiol and Biomanuf

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Lignocellulose is an abundant and renewable biomass that is mainly composed of cellulose, hemicellulose and lignin. The development and utilization of lignocellulosic ethanol is an effective way to solve the energy problem/crises, In addition, lignocellulosic ethanol industry can play a significant role in controlling environmental pollution and extending agricultural industrial chain; however, it has not been able to realize large-scale industrialization due to the limitation of both biotechnology and economy. This review first introduces industrialization status of lignocellulosic ethanol, and then focuses on the progress of practical technology and analyzing the economic feasibility of the second-generation bioethanol plant; finally, the future development trend of the industry was prospected. To summarize, continuous technological innovation is needed in vital steps such as pretreatment, enzymatic hydrolysis, and fermentation. Meanwhile, for making the cellulosic ethanol industry truly economically competitive, we also need to achieve interdisciplinary, cross-domain integration innovation, such as the construction of raw material collection and storage system, in situ producing special enzyme system, high-value utilization of raw material components, developing a closely integration of biomass refinery with mature equipment and overall industrialization programs, etc. It is hoped that this review can provide a useful reference for the industrialization of second-generation bioethanol.

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The conversion of lignocellulosic biomass to bioethanol: pretreatment technology comparison

Cited by 5 publications

References 16 publications

The effects of Trichoderma atroviride pretreatment on the biogas production from anaerobic digestion of water hyacinth

The effects of Trichoderma atroviride pretreatment on the biogas production from anaerobic digestion of water hyacinth

Effect of Pretreatment and Composition of Trichoderma Viride and Zymomonas Mobilis Consortium on Bioethanol Production from Leaf Litter

Industrialization progress of lignocellulosic ethanol

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