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lignocellulosic
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Modeling of Ethanol Production Technologies From Solid Waste and Evaluation of Ethanol Based Biofules in Energy System
, M.Sc. Thesis Sharif University of Technology ; Vosughi, Manoochehr (Supervisor) ; Saboohi, Yadollah (Supervisor)
Abstract
Considering finish ability of fossil fuels and their polluting effects accordingly a need of renewable energies is felt. Among these clean energies biomass considering economical and environmental advantages is one of bests. Therefore a sufficient energy¬-¬efficient process with a good efficiency is needed. In this study an analysis of different mechanism to produce bioethanol from biomass has been done. According to the results from simulation the recovery step of bioethanol from the existing dilute solution from fermentation consumes the most energy in the process. Therefore substituting saline extractive column can result in saving energy. Finally in order to get more accurate result the...
Biofuel Alcohol Production from Agricultural Residues in a Slurry Bioreactor
, M.Sc. Thesis Sharif University of Technology ; Vossoughi, Manoochehr (Supervisor) ; Alemzadeh, Iran (Supervisor)
Abstract
Nowadays bioethanol is one of the main factors in the fuel market. It is currently produced from sugars and starchy materials, but lignocelluloses can be expected to be major feedstocks for ethanol production in the future. Agricultural residues such as wheat straw are being considered a potential lignocellulose raw material for fuel-ethanol production as an alternative to starch or sugar-containing feedstock. In order to produce bioethanol, it is necessary to decompose the wheat straw into soluble sugars. But lignocellulosic materias needs pretreatment before hydrolysis and fermentation. The main goal of pretreatment is to increase the enzyme accessibility improving digestibility of...
Methane Adsorption on Activated Carbon Prepared from Lignocellulosic Materials
, M.Sc. Thesis Sharif University of Technology ; Kazemeini, Mohammad (Supervisor) ; Bozorgzadeh, Hamid Reza (Supervisor)
Abstract
One of the methods for adsorption of natural gas that has economical, operational and environmental preferences as an alternative energy source is storage as an adsorbed phase in porous material. ANG is superior to CNG and LNG technologies in terms of economy and safety. Carbonaceous nanostructures with pore diameter of 0.8-1.4 nm can be proper adsorbents for methane adsorption. In this work, cellulose and lignin which form lignocellulosic material’s structure, has been used as precursor for producing activated carbon. The activated carbon prepared has been used as adsorbent for adsorption of methane. The use of hydrothermal pretreatment followed by carbonization and chemical activation is...