Evaluation of Pretreatments of Biomass for Enzymatic Hydrolysis of Cellulose (en Inglés)
Reseña del libro "Evaluation of Pretreatments of Biomass for Enzymatic Hydrolysis of Cellulose (en Inglés)"
One principal barrier to economic utilization of lignocellulosic feedstocks in enzymatic systems for the production of alcohol fuels is a cost-effective pretreatment. The objective of a pretreatment is to render the cellulose susceptible to enzymatic hydrolysis. The lignin and hemicellulose fractions need to be partially or totally removed to enhance the hydrolysis. This report presents a detailed discussion of the physiochemical characteristics of lignocellulosics that must be considered it the development of successful pretreatment. Engineering and economic assessments are presented for key pretreatments based on organic solvent extraction (organosolv), explosive decompression (steam explosion), and wet oxidation. These assessments include process flowsheets, capital and operating cost summaries, and parametric analyses comparing the effects of various raw material and utility costs. Based on the cost of cellulose pulp produced, these pretreatments are competitive with pulping processes currently used in the paper industry. The pretreatment and feedstock costs contribute a significant amount--over 50% in most cases--of the cost of ethanol production. Recommendations are presented for a program of process-specific and integrated pretreatment-hydrolysis research.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
