文献类型：期刊文献

英文题名：Dry biorefinery conversion of cadmium-contaminated rice grain and straw to ethanol with complete collection and recycling of cadmium

作者：Shao, Shuai[1,2];Zhang, Bin[2];Wang, Ya[3];Han, Tao[2];Bao, Jie[2]

机构：[1]Yancheng Inst Technol, Sch Marine & Biol Engn, 211 Jianjun East Rd, Yancheng 224003, Jiangsu, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Shihezi Univ, Sch Chem & Chem Engn, Beisi Rd, Shihezi 800032, Xinjiang, Peoples R China

年份：2023

卷号：197

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20231313804541);WOS:【SCI-EXPANDED(收录号:WOS:000951638400001)】；

基金：This research was funded by the National Natural Science Founda- tion of China (21978083, 31961133006) .

语种：英文

外文关键词：Cadmium; Rice; Dry biorefinery; Enrichment; Energy balance; Bioethanol

摘要：Cadmium contaminated rice should be carefully treated by considering two aspects: full recovery of cadmium without risks of emission to environment, and energy balance between input and consumption. Separate treat-ment of rice grain and rice straw not only generates cadmium contained wastewater but also produces solid residue with livestock feed potentials. This study investigated a dry biorefining treatment to convert whole rice biomass (both grain and straw) into bioethanol at a reasonable energy balance and without solids residue po-tentials. The cadmium contained wastewater was significantly reduced and further completely evaporated into cadmium-free steam for recycled use in the treatment. The cadmium contained lignin solids were completely burned to evaporate the wastewater. The final cadmium content in combustion ash was enriched by 5-7 folds compared to raw rice biomass. The simulation showed that the heat generation from lignin residue combustion compensated for the energy requirement of wastewater evaporation. This study provides a fully converged treatment method of cadmium contaminated rice biomass on both cadmium and energy consumption with value added bioethanol production.