中国沼气2026，Vol.44Issue(1)：48-57,10.DOI:10.20022/j.cnki.1000-1166.2026010048
生物质沼渣资源化利用的多维路径探索:技术挑战、风险管控与循环经济模式创新
Multidimensional Pathways for the Resource Utilization of Biomass Digestate:Technological Challenges,Risk Management,and Circular Economy Model Innovation
摘要
Abstract
Biomass digestate,a byproduct of biogas production,exhibits dual characteristics of resource value and environ-mental risks.This paper systematically reviews research progress over the past two decades on the resource utilization of di-gestate,both domestically and internationally,highlighting its physical properties(64％ fiber content,1％ minerals),chemical composition(total N+P+K content up to 8％),and biological functions(enhancing soil microbial activity)and their potential impacts on agriculture and the environment.Studies demonstrate that digestate can be efficiently utilized through approaches such as fertilizer production,energy recovery,and material applications-for example,producing or-ganic fertilizers to increase crop yields by 15％～20％,pyrolyzing biochar to sequester 0.82 tons of CO2 per ton of diges-tate,and converting it via black soldier fly larvae into feed containing 40％crude protein.However,challenges persist,in-cluding heavy metal accumulation(e.g.,Cd exceeding standards in 15％ of cases),antibiotic residues,and high moisture content(＞80％),which escalates transportation costs.To address these issues,this paper proposes a synergistic"tech-nology-policy-industry"solution:developing intelligent dehydration equipment to reduce energy consumption by 30％,con-structing machine learning-based precision fertilization models,and designing tiered subsidy and carbon trading mecha-nisms.By comparing China's"digestate-organic fertilizer"recycling model with Europe's"energy-material"co-production systems,the study identifies the need for future integration of cutting-edge technologies such as nanomaterials and synthetic biology,as well as the establishment of cross-sectoral resource utilization networks.This research provides theoretical and practical pathways for transforming digestate from an"environmental burden"into a"strategic resource,"offering signifi-cant insights for advancing circular agriculture under the"dual carbon"goals.关键词
沼渣资源化/重金属风险/生物炭/循环经济/政策协同Key words
digestate resource utilization/heavy metal risk/biochar/circular economy/policy synergy分类
农业科技引用本文复制引用
迟世丹,梁甜甜,刘琪,王胜利,李崇斌..生物质沼渣资源化利用的多维路径探索:技术挑战、风险管控与循环经济模式创新[J].中国沼气,2026,44(1):48-57,10.基金项目
存量电厂生物质高效利用关键技术研究与应用-子课题4生物质炭资源化利用关键技术研究(37-K2024-133) （37-K2024-133）
甘肃省基础研究计划-软科学专项(23JRZA380). （23JRZA380）
