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| Effects of Different Feedstocks on Physicochemical Characteristics of Pyrolyzed Biochars |
| Received:April 13, 2015 |
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| KeyWord:biochar;feedstock;physicochemical characteristics;soil amendment |
| Author Name | Affiliation | E-mail | | YANG Fang | Chengdu Hydrogeological and Engineering Geological Team, Chengdu 610072, China
State Key Laboratory of Environment Geochemistery, Institute of Geochemistery, Chinese Academy of Science, Guiyang 550002, China | | | LEE Xin-qing | State Key Laboratory of Environment Geochemistery, Institute of Geochemistery, Chinese Academy of Science, Guiyang 550002, China | Lee@mails.gyig.ac.cn | | WANG Bing | State Key Laboratory of Environment Geochemistery, Institute of Geochemistery, Chinese Academy of Science, Guiyang 550002, China | | | SUN Lu | China Metallurgical Geology Bureau Kunming Institute Survey, Kunming 650203, China | | | HE Yun-yong | State Key Laboratory of Environment Geochemistery, Institute of Geochemistery, Chinese Academy of Science, Guiyang 550002, China | | | HUANG Yi-min | State Key Laboratory of Environment Geochemistery, Institute of Geochemistery, Chinese Academy of Science, Guiyang 550002, China | | | LI Yang | State Key Laboratory of Environment Geochemistery, Institute of Geochemistery, Chinese Academy of Science, Guiyang 550002, China | |
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| Abstract: |
| Feedstock characteristics strongly influence the physicochemical characteristics of pyrolyzed biochars, thus affecting the effects of biochars. In this research, the physicochemical characteristics of biochars pyrolyzed under the same pyrolysis condition(550 ℃) from nine feedstocks(four arbors:oak, mulberry, camphor tree and pine tree; three shrubs:phragmites, artemisia and fern; two crop straws:rape stalks and corn stalks) were examined. Soluble Cl- and K+, available phosphorus, EC, and CEC were generally higher in the straw-derived biochars than in the arbor- and shrub-derived biochars. However, there was no significant difference in soluble Na+, Ca2+, Mg2+ and SO42-, pH, NH4+-N and NO3--N among the three categories of biochars. From the perspective of the improvements of soil nutrients, CEC, and acidity, straw biochar is preferable over arbor and shrub biochars. |
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