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To design biorefinery processes producing bioethanol from lignocellulosic biomass with dilute acid pretreatment, biorefinery processes were simulated using the SuperPro Designer program. To improve the efficiency of biomass use and the economics of biorefinery, additional pretreatment processes were designed and evaluated, in which a combined process of dilute acid and aqueous ammonia pretreatments,...
7-Aminocephalosporanic acid (7-ACA) produced by immobilized glutaryl-7-aminocephalosporanic acid (GL-7-ACA) acylase is an important starting material for the synthesis of semisynthetic cephalosporins. In this study, GL-7-ACA acylase was immobilized on silica gel modified with 3-glycidoxypropyltrimethoxysilane followed with glutaraldehyde for the production of 7-ACA. Through the experiments, optimal...
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