An engineered solvent system for sugar production from lignocellulosic biomass using biomass derived γ-valerolactone

2016 ◽  
Vol 18 (21) ◽  
pp. 5756-5763 ◽  
Author(s):  
Ali Hussain Motagamwala ◽  
Wangyun Won ◽  
Christos T. Maravelias ◽  
James A. Dumesic
Keyword(s):  
Lignocellulosic Biomass ◽  
Solvent System ◽  
Efficient Production ◽  
Sugar Production

We demonstrate the design of a solvent system for efficient production and enhanced separation of carbohydrates from lignocellulosic biomass.

Pretreatment of Lignocellulosic Biomass with Recycled Black Liquor for Sugar Production

2012 ◽  
Author(s):  
Jiele Xu ◽  
Ximing Zhang ◽  
Pankaj Pandey ◽  
Jay J Cheng
Keyword(s):  
Lignocellulosic Biomass ◽  
Black Liquor ◽  
Sugar Production

scholarly journals Development of a genome-scale metabolic model of Clostridium thermocellum and its applications for integration of multi-omics datasets and strain design

2020 ◽  
Author(s):  
Sergio Garcia ◽  
R. Adam Thompson ◽  
Richard J. Giannone ◽  
Satyakam Dash ◽  
Costas D. Maranas ◽  
...  
Keyword(s):  
Metabolic Engineering ◽  
Lignocellulosic Biomass ◽  
Clostridium Thermocellum ◽  
System Analysis ◽  
Plant Biomass ◽  
Metabolic Model ◽  
Efficient Production ◽  
Branch Points ◽  
A Genome ◽  
Genome Scale

AbstractSolving environmental and social challenges such as climate change requires a shift from our current non-renewable manufacturing model to a sustainable bioeconomy. To lower carbon emissions in the production of fuels and chemicals, plant biomass feedstocks can replace petroleum using microorganisms as catalysts. The anaerobic thermophile Clostridium thermocellum is a promising bacterium for bioconversion due to its capability to efficiently degrade untreated lignocellulosic biomass. However, the complex metabolism of C. thermocellum is not fully understood, hindering metabolic engineering to achieve high titers, rates, and yields of targeted molecules. In this study, we developed an updated genome-scale metabolic model of C. thermocellum that accounts for recent metabolic findings, has improved prediction accuracy, and is standard-conformant to ensure easy reproducibility. We illustrated two applications of the developed model. We first formulated a multi-omics integration protocol and used it to understand redox metabolism and potential bottlenecks in biofuel (e.g., ethanol) production in C. thermocellum. Second, we used the metabolic model to design modular cells for efficient production of alcohols and esters with broad applications as flavors, fragrances, solvents, and fuels. The proposed designs not only feature intuitive push-and-pull metabolic engineering strategies, but also novel manipulations around important central metabolic branch-points. We anticipate the developed genome-scale metabolic model will provide a useful tool for system analysis of C. thermocellum metabolism to fundamentally understand its physiology and guide metabolic engineering strategies to rapidly generate modular production strains for effective biosynthesis of biofuels and biochemicals from lignocellulosic biomass.

scholarly journals Catalytic Processes For Lignin Valorization into Fuels and Chemicals (Aromatics)

2019 ◽  
Vol 8 (1) ◽  
pp. 20-40 ◽  
Author(s):  
Maria Ventura ◽  
Marcelo E. Domine ◽  
Marvin Chávez-Sifontes
Keyword(s):  
Lignocellulosic Biomass ◽  
Raw Materials ◽  
Structural Characteristics ◽  
Paper Industry ◽  
Efficient Production ◽  
Renewable Raw Materials ◽  
Platform Chemicals ◽  
Wide Range ◽  
Fuels And Chemicals ◽  
Catalytic Processes

Valorization of lignocellulosic biomass becomes a sustainable alternative against the constant depletion and environmental problems of fossil sources necessary for the production of chemicals and fuels. In this context, a wide range of renewable raw materials can be obtained from lignocellulosic biomass in both polymeric (i.e. cellulose, starch, lignin) and monomeric (i.e. sugars, polyols, phenols) forms. Lignin and its derivatives are interesting platform chemicals for industry, although mainly due to its refractory characteristics its use has been less considered compared to other biomass fractions. To take advantage of the potentialities of lignin, it is necessary to isolate it from the cellulose/ hemicellulosic fraction, and then apply depolymerization processes; the overcoming of technical limitations being a current issue of growing interest for many research groups. In this review, significant data related to the structural characteristics of different types of commercial lignins are presented, also including extraction and isolation processes from biomass, and industrial feedstocks obtained as residues from paper industry under different treatments. The review mainly focuses on the different depolymerization processes (hydrolysis, hydrogenolysis, hydrodeoxygenation, pyrolysis) up to now developed and investigated analyzing the different hydrocarbons and aromatic derivatives obtained in each case, as well as the interesting reactions some of them may undergo. Special emphasis is done on the development of new catalysts and catalytic processes for the efficient production of fuels and chemicals from lignin. The possibilities of applications for lignin and its derivatives in new industrial processes and their integration into the biorefinery of the future are also assessed.

scholarly journals Selective activation of the C–O bonds in lignocellulosic biomass for the efficient production of chemicals

2015 ◽  
Vol 36 (9) ◽  
pp. 1440-1460 ◽  
Author(s):  
Weiping Deng ◽  
Hongxi Zhang ◽  
Laiqi Xue ◽  
Qinghong Zhang ◽  
Ye Wang
Keyword(s):  
Lignocellulosic Biomass ◽  
Efficient Production ◽  
Selective Activation

Coupling metal halides with a co-solvent to produce furfural and 5-HMF at high yields directly from lignocellulosic biomass as an integrated biofuels strategy

2014 ◽  
Vol 16 (8) ◽  
pp. 3819-3829 ◽  
Author(s):  
Charles M. Cai ◽  
Nikhil Nagane ◽  
Rajeev Kumar ◽  
Charles E. Wyman
Keyword(s):  
Lignocellulosic Biomass ◽  
Solvent System ◽  
Metal Halides ◽  
High Yields

A monophasic reaction strategy is proposed that couples metal halides with a highly tunable co-solvent system employing renewable THF to significantly enhance co-production of furfural and 5-HMF from biomass.

scholarly journals A Review of Potential of Lignocellulosic Biomass for Bioethanol Production in Kenya

2020 ◽  
pp. 34-54
Author(s):  
John Odhiambo Otieno ◽  
Fredrick Onyango Ogutu
Keyword(s):  
Lignocellulosic Biomass ◽  
Treatment Process ◽  
Efficient Production ◽  
Bioethanol Production ◽  
Major Drawback ◽  
Major Barrier ◽  
Treatment Methods ◽  
Advantages And Disadvantages ◽  
Research Technology ◽  
Pre Treatment

Lignocellulosic biomass is the earth’s most abundant and renewable resource, and, lignin is its strongest component. The lignocellulosic biomass has a potential to produce bioethanol for both domestic and industrial use. The presence of lignin in the biomass, however, hinders the processing and production of bioethanol from the biomass. Hence, to enhance the chances of bioethanol production from the lignocellulosic biomass, lignin has to be pre-treated. The pre-treatment process efficiently separates the interlinked complex components. During the pre-treatment process, the strong lignin component that is highly resistant and a major barrier to solubilization is broken down by hydrolysis of cellulose and hemicellulose. Pre-treatment of lignocellulosic biomass is therefore, necessary to make it more susceptible to microorganisms, enzymes, and pathogens. The initial pre-treatment approaches include physical, physicochemical, and biological methods. The major drawback of this pre-treatment process is its cost implications, as it’s very costly. Studies suggest that even though it’s a costly affair, the pre-treatment methods, however, have a significant impact on the efficient production of ethanol from biomass. Situation Analysis: Bioethanol production from lignocellulosic biomass has mostly been undertaken in Brazil, USA, China, and India. In Kenya, however, little research on bioethanol production from lignocellulosic biomass has been done and adopted. The present review paper seeks to outlay the benefits of bioethanol production from lignocellulosic biomass, the composition of lignocellulosic biomass, its properties, different pre-treatment methods alongside advantages, and, disadvantages, and challenges encountered during bioethanol production. This review eventually will be of great assistance to researchers while developing bioethanol from different lignocellulosic biomass. Research, technology adaption/adaptation, and policy targeted at growing bioethanol industry, could enable Kenya to grow her bioethanol industry.

Sign in / Sign up

Export Citation Format

Share Document