文献类型：期刊文献

英文题名：Recycling of waste calcium carbonate in lignocellulosic biorefining chain for chiral lactic acid production

作者：Zhang, Bin[1];Han, Qingmei[1];Liu, Qi[1];Wang, Ya[2];Bao, Jie[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Shihezi Univ, Sch Chem & Chem Engn, Beisi Rd, Shihezi 800032, Xinjiang, Peoples R China

年份：2024

卷号：395

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001166866100001)】；

基金：This research was supported by the National Natural Science Foundation of China (32301269) , China Postdoctoral Science Foundation (2023M741175) , and the Yangfan Project of Science and Technology Committee of Shanghai Municipality (23YF1409900) . The authors thank Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization.

语种：英文

外文关键词：Lignocellulose; Biorefinery; Solid residues; Ash; Neutralization

摘要：One of the major end-products of lignocellulosic biorefining chain is the solid residues containing various compounds. The present approach to solid residues treatment is combustion for generation of heat and electricity. This study investigated the potential for recycling of the combustion ash from the solid residues after lignocellulosic dry biorefining process. A range of characterizations showed that the combustion ash contained a high amount of calcium carbonate. By recycling the ash as the neutralizer in biorefining process, the waste calcium carbonate in the ash was efficiently utilized for pretreated biomass neutralization and can replace 40 % of calcium hydroxide for lactic acid production. The chiral L-lactic acid titer reached 102.4 +/- 3.6 g/L from 20 % (w/w) solids loading of wheat straw. Three feasible strategies of ash recycling for the investigated biorefinery concept were further proposed base on the rigorous calcium mass calculation, which can efficiently reduce the consumption of neutralizers.