Development and economic analysis of bioethanol production facilities using lignocellulosic biomass

Kang, Kyoung Ho; Jeong, Jun-Seong; Kim, Yule; Min, Jiho; Moon, Se-Kwon

doi:10.1016/j.jbiosc.2019.04.004

Cited by 31 publications

(11 citation statements)

References 15 publications

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“…Sugarcane bagasse is predominantly composed of cellulose, hemicellulose, and lignin, which are strongly associated to form the plant cell wall, resulting in a stable and recalci-trant structure [3]. Cellulose and hemicellulose are polysaccharides that cannot be directly converted into ethanol but can be hydrolyzed to obtain monosaccharides such as glucose and xylose that, in turn, can be fermented to produce ethanol [4,5]. Enzymatic hydrolysis is applied to convert cellulose to glucose (substrate used in the classic production of first-generation ethanol) [6].…”

Section: Introductionmentioning

confidence: 99%

Sugarcane Bagasse Saccharification by Enzymatic Hydrolysis Using Endocellulase and β-glucosidase Immobilized on Different Supports

et al. 2021

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The saccharification of sugarcane bagasse by enzymatic hydrolysis is one of the most promising processes for obtaining fermentable sugar to be used in the production of second-generation ethanol. The objective of this work was to study the immobilization and stabilization of two commercial enzymes: Endocellulase (E-CELBA) in dextran coated iron oxide magnetic nanoparticles activated with aldehyde groups (DIOMNP) and β-glucosidase (E-BGOSPC) in glyoxyl agarose (GLA) so that their immobilized derivatives could be applied in the saccharification of pretreated sugarcane bagasse. This was the first time that the pretreated sugarcane bagasse was saccharified by cascade reaction using a endocellulase immobilized on dextran coated Fe2O3 with aldehyde groups combined with a β-glucosidase immobilized on glyoxyl agarose. Both enzymes were successfully immobilized (more than 60% after reduction with sodium borohydride) and presented higher thermal stability than free enzymes at 60, 70, and 80 °C. The enzymatic hydrolysis of the sugarcane bagasse was carried out with 15 U of each enzyme per gram of bagasse in a solid-liquid ratio of 1:20 for 48 h at 50 °C. Under these conditions, 39.06 ± 1.18% of the cellulose present in the pretreated bagasse was hydrolyzed, producing 14.11 ± 0.47 g/L of reducing sugars (94.54% glucose). In addition, DIOMNP endo-cellulase derivative maintained 61.40 ± 1.17% of its enzymatic activity after seven reuse cycles, and GLA β-glucosidase derivative maintained up to 58.20 ± 1.55% of its enzymatic activity after nine reuse cycles.

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Section: Introductionmentioning

confidence: 99%

Sugarcane Bagasse Saccharification by Enzymatic Hydrolysis Using Endocellulase and β-glucosidase Immobilized on Different Supports

et al. 2021

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“…On the contrary, the feedstock costs in this proposed work played an unimportant role, even almost negligible. Table 6 The summarization for the production cost of ethanol from biomass Kang et al, 2019 The economic results of the proposed study were based on a small industrial scale plant. For future studies, it would be highly recommended to develop a medium to large industrial scale, since the economies of scale were proved to be critical.…”

Section: Economic Resultsmentioning

confidence: 99%

Techno-Economic Analysis for Bioethanol Plant with Multi Lignocellulosic Feedstocks

Srinophakun

Thanapimmetha

Srinophakun

et al. 2020

Int. J. Renew. Energy Dev.

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Oil palm empty fruit bunch and trunk are classified as primary lignocellulosic residues from the palm oil industry. They are considered to be promising feedstocks for bioconversion into value-added products such as bioethanol. However,using these lignocellulosic materials to produce bioethanol remains a significant challenge for small and medium enterprises. Hence, techno-economic and sensitivity analyses of bioethanol plant simultaneously treating these materials were performed in this study. The information based on preliminary experimental data in batch operations wasemployed to develop a simulation of an industrial-scale semi-continuous production process. Calculations of mass balance, equipment sizes, and production cost estimation of the production plant of various capacities ranging from 10,000 L/day to 35,000 L/day were summarized. The result based on 20 years of operation indicated that the net present value of theplant of lower capacities was negative. However,thisvalue became positive when the plant operated with a higher capacity, 35,000 L/day.The highest ethanol yield, 294.84 LEtOH/tonfeedstock, was produced when the planttreated only an empty fruit bunch generating 8.94% internal rate of return and US$0.54 production cost per unit.Moreover, the higher oil palm trunk ratio in the feedstock, the lower ethanol yield contributing to the higher production cost per unit.©2020. CBIORE-IJRED. All rights reserved

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“…Distillation and dehydration are vital steps for obtaining fuel-grade ethanol from lignocellulosic biomass. Distillation allows for the effective separation of a component substance (such as ethanol) from a miscible liquid mixture (such as fermentation broth) through consecutive selective evaporation and condensation processes based on a difference in their volatilities [173][174][175]. The water content in the post-fermentation mixture is very high, usually exceeding 80% of the dry weight.…”

Section: Distillation and Dehydrationmentioning

confidence: 99%

Bioethanol Production from Lignocellulosic Biomass—Challenges and Solutions

2022

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Regarding the limited resources for fossil fuels and increasing global energy demands, greenhouse gas emissions, and climate change, there is a need to find alternative energy sources that are sustainable, environmentally friendly, renewable, and economically viable. In the last several decades, interest in second-generation bioethanol production from non-food lignocellulosic biomass in the form of organic residues rapidly increased because of its abundance, renewability, and low cost. Bioethanol production fits into the strategy of a circular economy and zero waste plans, and using ethanol as an alternative fuel gives the world economy a chance to become independent of the petrochemical industry, providing energy security and environmental safety. However, the conversion of biomass into ethanol is a challenging and multi-stage process because of the variation in the biochemical composition of biomass and the recalcitrance of lignin, the aromatic component of lignocellulose. Therefore, the commercial production of cellulosic ethanol has not yet become well-received commercially, being hampered by high research and production costs, and substantial effort is needed to make it more widespread and profitable. This review summarises the state of the art in bioethanol production from lignocellulosic biomass, highlights the most challenging steps of the process, including pretreatment stages required to fragment biomass components and further enzymatic hydrolysis and fermentation, presents the most recent technological advances to overcome the challenges and high costs, and discusses future perspectives of second-generation biorefineries.

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Development and economic analysis of bioethanol production facilities using lignocellulosic biomass

Cited by 31 publications

References 15 publications

Sugarcane Bagasse Saccharification by Enzymatic Hydrolysis Using Endocellulase and β-glucosidase Immobilized on Different Supports

Sugarcane Bagasse Saccharification by Enzymatic Hydrolysis Using Endocellulase and β-glucosidase Immobilized on Different Supports

Techno-Economic Analysis for Bioethanol Plant with Multi Lignocellulosic Feedstocks

Bioethanol Production from Lignocellulosic Biomass—Challenges and Solutions

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