SHEN Weibo1, 2 ，ZHANG Yun1 ，WANG Ziqing1 , XU Baohua3 , HAN Fengpeng1, 2 , ZHENG Jiyong1, 2
(1. Institute of Soil and Water Conservation , Northwest A&F University, Yangling, 712100, China; 2. State Key Laboratory of Soil Erosion and Dry-land Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100, China; 3. Beijing Uni-construction Ready Mixed Concrete Company, Beijing 101304, China)
Abstract： Nine kinds of wood were selected to prepare biochars through dry steam cracking. The pore volume, specific surface area and pore size distribution of the biochars were measured by mercury porosimetry. The pore structures of the nine kinds of biochars were compared. The results show that the biochars made from Malus pumila wood has the biggest porosity, which is 53.15%, and the biochars made from mahogany has the smallest porosity, which is 44.38%. Through analyzing the pore volume distribution curves and pore surface area distribution curves of the biochars, it’s shown that the quantities of minipore and micropore are much more in locust and apricot wood, and the quantities of macropore and micropore are much more in mahogany and candlenut. The pore structure similarity of the nine kinds of biochars was analyzed through clustering, which shows that Malus pumila wood, willow, locust, and apricot wood belong to the microporous class, citron wood and ailanthus wood belong to the miniporous class, calamander and mahogany belong to the mesoporous class, and candlenut belongs to the macroporous class.
Keywords: wood; biochar; pore structure
中图分类号：TB383 文献标志码：A
文章编号：1008-5548(2015)02-0024-05
DOI:10.13732/j.issn.1008-5548.2015.02.006
收稿日期：2015-02-26， 修回日期：2015-03-11，在线出版时间：2015-04-17。
基金项目：国家自然科学基金项目，编号：41101528；中国清洁发展机制基金赠款项目。
第一作者简介：申卫博(1979—)，男，博士，助理研究员，研究方向为土壤侵蚀与水土保持。电话：13519116262，E-mail: shenwb@ms.iswc.ac.cn。
通信作者简介：郑纪勇(1974—)，男，博士，副研究员，研究方向为土壤侵蚀与水土保持。E-mail:growinfall@163.com。
