摘要
规模化畜禽养殖业为社会带来巨大经济收益的同时,也带来了严重的环境污染问题。文章综述了我国畜禽粪便的资源化特征及其能源化利用方式,指出热化学转换技术是实现畜禽粪便由低品位能源转向高品位能源的关键技术,热解产物生物质炭由于其能改变土壤物理化学性能,可作为新型环境功能材料,并以其优良的环境效应和生态效应成为环境科学等学科研究的前沿热点。对畜禽粪便生物质炭的制备技术及其在土壤肥力改良、土壤温室气体减排以及受重金属污染环境修复的应用和机理方面研究分析的同时,展望了畜禽粪便生物质炭的发展前景,为畜禽粪便生物质炭技术的应用和推广提供一定的思路。
Although a great deal of livestock and poultry breeding brought magnificent economic benefits for the society,it caused great harm to environment. In this article,the characteristics and energy utilization method of the livestock manure was illustrated,and it was suggested that the thermo-chemical conversion was the key technology to convert the low-grade energy to the high- grade energy.In addition,by altering soil physio-chemieal properties （e.g.increasing soil pH,organic carbon content,and cation exchange capacity）,the biochar derived from animal manures was a new environmental function material,and its excellent ecological environment effects has been the focus of environment sciences and other disciplinary study. Then preparative technique of animal waste based biochar was briefly introduced.The progresses on its applications in improving fertility and plant productivity,offsetting emission of green house gases（CO2,N2O,CH4） and immobilizing or ab- sorbing heavy metals were analyzed. Finally,possible hotspots of future study on biochar derived from livestock manures were prospected,so as to provide perspectives on applications and promo- tions of bioehar technology.
出处
《可再生能源》
CAS
北大核心
2014年第4期512-518,共7页
Renewable Energy Resources
基金
公益性行业(农业)科研专项经费课题(201003063-06)
华南农业大学大学生创新创业训练计划项目
关键词
畜禽粪便
热解
生物质炭
肥料
重金属
livestock manure
pyrolysis
biochar
fertilizer
heavy metals
