摘要
利用可再生能源发电获得单细胞蛋白质,即“电转蛋白质(Power-to-Protein,PtP)”,是生产单细胞蛋白质的绿色可持续途径.厌氧消化(anaerobic digestion,AD)可提供“电转蛋白质”过程中所需要的碳源以及部分氮源、微量元素等,通过厌氧消化与“电转蛋白质”技术相结合构建了一种可持续的蛋白质生产工艺,“厌氧消化-电转蛋白质(anaerobic digestion-Power-to-Protein,ADPtP)”.本文介绍现有利用AD出料培养微生物获得单细胞蛋白质的工艺,分析引入PtP技术后的工艺效率与能耗,重点介绍ADPtP工艺的基础模式、过程中资源整合与利用.在电化学法还原模式中将沼气升级后培养甲烷氧化细菌操作简便易行且环境效益高,而以Wood-Ljungdahl碳转化途径设计的ADPtP工艺在安全性方面占优势.ADPtP工艺中,降低爆炸风险和提高转化效率是亟须解决的关键问题.另外,工艺中资源整合方式为电化学沼气升级、电化学消化液提氨、电解水产氢.未来,我国沼气产量与潜在储备量以及可再生能源发电量将为ADPtP提供发展基础,同时具有良好的政策环境和巨大的潜在蛋白质市场需求,因此该工艺在我国作为新型绿色蛋白质生产工艺而施行具有良好基础与应用前景.
Power-to-protein(PtP)is a sustainable approach to produce single-cell proteins that uses renewable energy to generate electricity,which in turn powers the protein synthesis.Anaerobic digestion(AD)can be incorporated into this approach,to provide the carbon,nitrogen,and trace elements needed for PtP.Through this combination,a sustainable ADPtP process for protein synthesis could be developed.This article introduces the existing technologies for utilizing AD to culture microorganisms and obtain single-cell proteins,analyzes the process efficiency and energy consumption after the introduction of PtP technology,and describes the basic method of ADPtP,including the integration of the two processes.Using the electrochemical reduction method,upgrading biogas to cultivate methane-oxidizing bacteria is straight-forward and has remarkable environmental benefits.The ADPtP process,designed using the Wood–Ljungdahl carbon conversion pathway,has key advantages in terms of safety,reduced explosion risk,and improved conversion efficiency.In addition,the methods of resource integration into the process include electrochemical biogas upgrading,electrochemical ammonia extraction from the digestate,and electrolysis of water to produce hydrogen.China’s biogas production,potential reserves,and renewable-energy-based power generation will provide a basis for the future developments in ADPtP.The current policy environment is encouraging and a huge market demand exists for single-cell proteins.Therefore,ADPtP has a sound foundation and strong prospects for implementation as a new green process for protein production in China.
作者
刘强
李叶青
冯璐
周红军
LIU Qiang;LI Yeqing;FENG Lu;ZHOU Hongjun(State Key Laboratory of Heavy Oil Processing,Beijing Key Laboratory of Biogas Upgrading Utilization,College of New Energy and Materials,China University of Petroleum Beijing,Beijing 102249,China;Department of Biological and Chemical Engineering,Aarhus University,Tjele 8830,Denmark;Norwegian Institute of Bioeconomy Research(NIBIO),Ås 1431,Norway)
出处
《应用与环境生物学报》
CAS
CSCD
北大核心
2023年第2期289-296,共8页
Chinese Journal of Applied and Environmental Biology
基金
中国石油大学(北京)科研基金项目(2462020BJRC003,2462020YXZZ018)
中国石油天然气集团有限公司-中国石油大学(北京)战略合作科技专项项目(ZLZX2020-04)资助
关键词
厌氧消化
单细胞蛋白质
电转蛋白质
可再生能源
anaerobic digestion
single-cell protein
Power-to-Protein
renewable energy
