Size Reduction and Densification of Lignocellulosic Biomass Feedstock for Biopower, Bioproducts, and Liquid Biofuel Production

Author(s):  
Zewei Miao ◽  
Tony E. Grift ◽  
K.C. Ting
Author(s):  
Desikan Ramesh ◽  
Iniya Kumar Muniraj ◽  
Kiruthika Thangavelu ◽  
Subburamu Karthikeyan

The shifting of dependence from conventional fuels to renewable fuels and its increased production to combat the energy, environmental, and geopolitical crises is a global concern. One of the viable and promising alternatives is liquid biofuel production using lignocellulosic biomass. Lignocellulosic biomass being the most abundant encompass cellulose, hemicellulose, and lignin.The intricate complex of hemicellulose and lignin around cellulose is the bottleneck in commercializing the biofuel process. To make the cellulose and hemicellulose more accessible for hydrolysis and valorise the underutilized lignin for platform chemical production, pretreatment becomes imperative. Various pretreatment methods such as physical, mechanical, chemical, biological, and enzymatic and their combinations are employed for the production of bioethanol. It should be stressed that each pretreatment is unique in its condition and in most cases are biomass specific. With the above view, this chapter aims at bringing out the understanding of lignocellulosic pretreatment with updated information in the field.


2014 ◽  
Vol 625 ◽  
pp. 838-841 ◽  
Author(s):  
Siti Norsyarahah Che Kamarludin ◽  
Muhammad Syafiq Jainal ◽  
Amizon Azizan ◽  
Nor Sharliza Mohd Safaai ◽  
Ahmad Rafizan Mohamad Daud

Lignocellulosic biomass (LB) sources which are readily available in abundance are widely considered as a potential future sustainable raw materials for biofuel production. Typically, biofuel production involved several chemical and mechanical steps consisting of pretreatment, hydrolysis, fermentation and separation. The pretreatment step is considered as one of the most vital part of the whole processing scheme due to the impact it had on the efficiency of the subsequent processing steps. In this study we reviewed the mechanical pretreatment of LB focusing mainly on the size reduction technique by grinding process. Grinding is one of the proven preliminary pretreatment techniques employed in biomass conversion to liquid biofuel. However, this technique is known to be costly due to high energy consumption. In view of this, an efficient and cost effective pretreatment technology is required in order for the biofuel to be produced at a competitive level. At the same time, the impact on environment caused by the conventional pretreatment processes can be minimized. Thus, a new combined chemical-mechanical pretreatment is considered whereby a green ionic liquid (IL) solvent is introduced.


Biofuels ◽  
2013 ◽  
Vol 4 (1) ◽  
pp. 5-8 ◽  
Author(s):  
Zewei Miao ◽  
Tony E Grift ◽  
Alan C Hansen ◽  
KC Ting

2021 ◽  
Author(s):  
Rajiv CHANDRA RAJAK ◽  
Pathikrit Saha ◽  
Mamata S Singhvi ◽  
Darae Kwak ◽  
Danil Kim ◽  
...  

Pretreatment of lignocellulosic biomass to specifically depolymerise lignin moieties without loss of carbohydrates as well as to minimize the generation of harmful intermediates during the process is a major challenge...


2021 ◽  
Vol 223 ◽  
pp. 106997 ◽  
Author(s):  
Anh Tuan Hoang ◽  
Hwai Chyuan Ong ◽  
I. M. Rizwanul Fattah ◽  
Cheng Tung Chong ◽  
Chin Kui Cheng ◽  
...  

2017 ◽  
Vol 33 (5) ◽  
pp. 2257-2262 ◽  
Author(s):  
Pakpoom Sangdara ◽  
Maliwan Subsadsana ◽  
Chalerm Ruangviriyachai

2018 ◽  
Vol 37 (2) ◽  
pp. 157-167 ◽  
Author(s):  
Ismail Cem Kantarli ◽  
Stylianos D Stefanidis ◽  
Konstantinos G Kalogiannis ◽  
Angelos A Lappas

The objective of this study was to examine the potential of poultry wastes to be used as feedstock in non-catalytic and catalytic fast pyrolysis processes, which is a continuation of our previous research on their conversion into biofuel via slow pyrolysis and hydrothermal conversion. Both poultry meal and poultry litter were examined, initially in a fixed bed bench-scale reactor using ZSM-5 and MgO as catalysts. Pyrolysis of poultry meal yielded high amounts of bio-oil, while pyrolysis of poultry litter yielded high amounts of solid residue owing to its high ash content. MgO was found to be more effective for the deoxygenation of bio-oil and reduction of undesirable compounds, by converting mainly the acids in the pyrolysis vapours of poultry meal into aliphatic hydrocarbons. ZSM-5 favoured the formation of both aromatic compounds and undesirable nitrogenous compounds. Overall, all bio-oil samples from the pyrolysis of poultry wastes contained relatively high amounts of nitrogen compared with bio-oils from lignocellulosic biomass, ca. 9 wt.% in the case of poultry meal and ca. 5–8 wt.% in the case of poultry litter. This was attributed to the high nitrogen content of the poultry wastes, unlike that of lignocellulosic biomass. Poultry meal yielded the highest amount of bio-oil and was selected as optimum feedstock to be scaled-up in a semi-pilot scale fluidised bed biomass pyrolysis unit with the ZSM-5 catalyst. Pyrolysis in the fluidised bed reactor was more efficient for deoxygenation of the bio-oil vapours, as evidenced from the lower oxygen content of the bio-oil.


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