文献类型：期刊文献

英文题名：Maximizing phosphorus and potassium recycling by supplementation of lignin combustion ash from dry biorefining of lignocellulose

作者：Liu, Gang[1,2];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]Minist Agr, Biogas Inst, Key Lab Dev & Applicat Rural Renewable Energy, Chengdu 610041, Sichuan, Peoples R China

年份：2019

卷号：144

起止页码：104

外文期刊名：BIOCHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20190406423234);WOS:【SCI-EXPANDED(收录号:WOS:000462419600012)】；

基金：This research was supported by the China Postdoctoral Science Foundation (2018M632043), the Fundamental Research Funds for the Central Universities of China (WF1814033), and the Open Funding Project of the Key Laboratory of Development and Application of Rural Renewable Energy.

语种：英文

外文关键词：Nutrient recycling; Lignocellulose; Lignin combustion ash; Phosphorous; Potassium

摘要：Lignocellulose biorefinery produces fuel ethanol and lignin residue byproduct. The combustion ash of lignin residue after electricity generation contains high amount of phosphorous and potassium elements and the recycling to farmland provides a sustainable nutrients supply. This study demonstrated a maximum scenario of water-soluble phosphorous and potassium recycling through a dry biorefining process by reduction of wastewater generation to an extremely low level, in which the soluble phosphorus and potassium compounds were preserved. For biorefining one metric ton of five different lignocellulose biomass, averagely 51-87 kg of lignin combustion ash, 0.75-1.12 kg of phosphorous or equivalent 1.75-2.57 kg of P2O5, and 1.03-2.26 kg of potassium or equivalent 1.24-2.73 kg of K2O were obtained. The recycling of the ash to farmland covered 78-90% and 100% (with surplus) of the world average phosphate and potash fertilizer use, respectively. Even for the need of farmland in China with the heavily overused phosphate and potash fertilizers, the lignin combustion replaced 17-19% of phosphate fertilizer and 30-70% of potash fertilizer. The minimum ethanol selling price was also reduced by 2.1-3.3% by the fertilizer replacement.