摘要
生物炭的理化性质主要由基质材料和热解条件决定。本试验以玉米棒芯、大豆秸秆和水稻颖壳为生物质材料,以马弗炉为热解设备,研究热解温度(300、350、400、450、500和550℃)和热解时间(3、6和9 h)对生物炭产率、pH和碳氮含量的影响。结果表明:随着热解温度的升高和热解时间的增长,生物炭的产率随之降低,pH随之升高;玉米棒芯生物炭和大豆秸秆生物炭碳含量随着热解温度的升高和热解时间的延长增加,但水稻颖壳生物炭碳含量变化不大;随着热解温度的升高和热解时间的延长,玉米棒芯生物炭和水稻颖壳生物炭氮含量变化无规律,但大豆秸秆生物炭氮含量呈降低趋势。
The physical and chemical properties of biochar are mainly determined by matrix ma- terials and pyrolysis conditions. Taking the corn cob, soybean stalk, and rice husk as test materi- als, and by using muffle furnace, this paper studied the effects of pyrolysis temperature （300, 400, 450, 500, and 550℃ ） and pyrolysis duration （3, 6, and 9 hours） on the biochar yield, its pH, and carbon and nitrogen contents. With the increase of pyrolysis temperature and dura- tion, the biochar yield decreased, while the biochar pH increased. The carbon content of the biochar produced from corn cob and soybean stalk increased with the increase of pyrolysis temper- ature and duration, while that of the biochar produced from rice husk had less change. The nitro- gen content of the biochar produced from soybean stalk decreased with the increase of pyrolysis temperature and duration, while that of the biochar produced from corn cob and rice husk had no regular change.
出处
《生态学杂志》
CAS
CSCD
北大核心
2013年第9期2347-2353,共7页
Chinese Journal of Ecology
基金
黑龙江省杰出青年科学基金项目(JC201116)
黑龙江省科技攻关项目(GC12B104)
公益性行业(农业)科研专项经费项目(201303095)资助
关键词
生物炭
玉米棒芯
大豆秸秆
水稻颖壳
热解
碳氮含量
biochar
corn cob
soybean stalk
rice husk
pyrolysis
carbon and nitrogen contents
作者简介
张千丰，男，1984年生，硕士，主要从事土壤微生物生态研究。E—mail：zhangqfl9851020@163．com
