Process Concepts for Conversion of Biofuels Residue to Valueadded Product (2024)

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Thermocatalytic Conversion of Sugarcane Bagasse (SCB) for Bioethanol Production: A Review

2022 •

kunle Akinlabi Akinkuade, Ibukunoluwa Olasesan

An estimated 1.6 billion metric tons of sugarcane are produced worldwide each year, producing 279 million tons in metric of sugarcane bagasse (SCB) [1]. In terms of sugarcane production, Brazil leads the world with an annual output of about 739,300 metric tons, followed by India, China, Thailand, Pakistan, Mexico, Colombia, Indonesia, the Philippines, and the United States [2]. Sugarcane production produces waste and, if neglected, will have a serious negative impact on the environment. Alcohols, furfurals, organic acids, butanol, hydrogen, methane, ethanol, and other value-added products have all seen a major increase in output during the past few years [3], [4], [5]. The sustainable bio economy should be expanded via bio-based methods. An economic transformation from linear to circular will occur if the bio economy is more circular and sustainable. In view of the requirement for energy and environmental sustainability, a great deal of research has been done on the various SCB applications. Due to its successful application in the production of bioethanol, SCB is an acceptable source of sustainable feedstock for biofuel production. The SCB's bio products and enzymes demonstrate their economic value. Due to the higher reserve price than the current market price, the feasibility and industrial scale economics of biodiesel with sugar cane bagasse have revealed adverse net present values.

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Renewable Energy

Integrated 1st and 2nd generation sugarcane bio-refinery for jet fuel production in Brazil: Techno-economic and greenhouse gas emissions assessment

2017 •

Patricia Osseweijer

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Journal of environmental management

Energetic and environmental assessment of thermochemical and biochemical ways for producing energy from agricultural solid residues: Coffee Cut-Stems case

2017 •

Ramiro Betancourt

Forest residues are an important source of biomass. Among these, Coffee Cut-Stems (CCS) are an abundant wood waste in Colombia obtained from coffee crops renovation. However, only low quantities of these residues are used directly in combustion processes for heating and cooking in coffee farms where their energy efficiency is very low. In the present work, an energy and environmental assessment of two bioenergy production processes (ethanol fermentation and gasification) using CCS as raw material was performed. Biomass gasification seems to be the most promising thermochemical method for bioenergy production whereas, ethanol fermentation is a widely studied biochemical method to produce biofuels. Experimental runs of the CCS gasification were carried out and the synthesis gas composition was monitored. Prior to the fermentation process, a treatment of the CCS is required from which sugar content was determined and then, in the fermentation process, the ethanol yield was calculated. ...

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Biomass Volume Estimation and Valorization for Energy

Biomass as Raw Material for Production of High‐Value Products

2017 •

Sibel Irmak

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Biotechnology for Biofuels

Techno-economic comparison of ethanol and electricity coproduction schemes from sugarcane residues at existing sugar mills in Southern Africa

2014 •

Mathew Aneke

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A critical review of the effects of pretreatment methods on the exergetic aspects of lignocellulosic biofuels.pdf

2020 •

Dr. Abdul-Sattar Nizami

Pretreatment process is the key technological step in lignocellulose bioconversion into biofuel owing to its robust molecular structure. This pivotal process can markedly affect the overall sustainability of lignocellulosic biofuel systems because of its energy-intensive, chemical-dependent, and time-consuming nature. More advanced methods should then be developed to evaluate the effects of pretreatment methods on the thermodynamic, economic, and environmental features of lignocellulosic biofuel systems. Among the various tools developed so far, exergetic approaches have attracted a great deal of interest for decision-making purposes because of their interdisciplinary character. Exergy-based methods could provide invaluable information regarding the technical characteristics, economic costs, and environmental impacts of lignocellulosic biofuel systems. Hence, this review is aimed at briefly summarizing the lignocellulose pretreatment methods as well as comprehensively reviewing and critically discussing their key effects on the exergetic aspects of the resulting biofuels. Overall, the hotspots of thermodynamic inefficiency, cost loss, and environmental burden of lignocellulosic biofuel systems could be reliably identified using exergetic methods. Much of the current literature on exergetic analysis of the lig-nocellulose pretreatment process has been particularly limited to dilute sulfuric acid, organosolv, and steam explosion pretreatment methods, while exergetic aspects of alkaline, liquid hot water, biological, and combined approaches have not been evaluated well enough. In addition, the majority of the published works have only focused on quantifying thermodynamic imperfections and determining exergetic efficiencies of the simulation-based lignocellulosic biofuel systems, while a limited number of studies have investigated exergy-based economic and environmental aspects of such biofuel systems. As a suggestion, future studies need to be concentrated on investigating exergetic aspects of the unexplored pretreatment strategies as well as applying exergoeconomic and exergoenvironmental methods for providing information regarding the formation processes of cost and environmental burden.

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Dissertationes Forestales

Potential of neglected biomass and industrial side-streams utilization in biofuels production

2022 •

Sandra Sandar

The utilization of forest side-streams is associated with the applied bioenergy technology that must be impellent to support the increasing demand for biofuels and resources while lowering greenhouse gas (GHG) emission from the transport sector. This study aimed to estimate potential biofuel production from eutrophic (EL) and mesotrophic (ML) lake bottom biomass and the manufacturing side-streams from the pulp and paper mill (PI – PVIII). Theoretical biogas and bioethanol productions were modeled by Aspen Plus® simulation through 1) saccharification and fermentation, 2) gasification and mixed alcohol synthesis, 3) gasification-syngas fermentation, and (4) anaerobic digestion processes. In addition, the different process stages of the pulp and paper side-streams was studied by ABE fermentation using Clostridium acetobutylicum DSM 1731. The bioethanol produced from EL and ML biomass from indirect gasification and mixed alcohol synthesis were 244.5 L/t and 57.1 L/t, whereas the yields ...

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Bioenergy for Sustainability and Security

Gasoline-Like Biofuel

2018 •

Basanta Kumara Behera

Biomass is plants’ origin. Biomass includes all of the earth’s living matter, plants and animals and the remains of this living matter. Plant biomass is a renewable energy source that is produced through photosynthesis when plants capture carbon dioxide from the air and combine it with water to form carbohydrates and oxygen under the influence of sunlight. Biomass does not include plant or animal matter that has been converted by geologic processes to create fossil fuels such as oil or coal. Biomass is an industry term for getting energy by burning wood and other organic matter. As an energy source, biomass can either be used directly via combustion to produce heat or indirectly after converting it to various forms of biofuel. Conversion of biomass to biofuel can be achieved by different methods which are broadly classified into thermal, chemical and biochemical methods.

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Bioenergy from Wood, Chapter 7. Biomass conversion to bioenergy products

2014 •


This book is written for scientists and practitioners interested in deepening their knowledge of the sustainable production of bioenergy from wood in tropical and sub-tropical countries. Utilising the value chain concept, this book outlines the necessary aspects for managing sustainable bioenergy production. A wide range of topics is covered including biomass localization, modelling and upscaling, production management in woodlands and plantations, and transport and logistics. Biomass quality and conversion pathways are examined in order to match the conversion technology with the available biomass. A section is dedicated to issues surrounding sustainability. The issues, covered in a life-cycle assessment of the bioenergy system, include socio-economic challenges, local effects on water, biodiversity, nutrient-sustainability and global impacts. Through this holistic approach and supporting examples from tropical and sub-tropical countries, the reader is guided in designing and implementing a value chain as the main management instrument for sustainable wood.

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Biofuels, Bioproducts and Biorefining

Harnessing the potential of bio-ethanol production from lignocellulosic biomass in Nigeria - a review

2018 •

Adeolu Awoyale

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Process Concepts for Conversion of Biofuels Residue to Valueadded Product (2024)
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