Comparison of biochar properties from 5 kinds of halophyte produced by slow pyrolysis at 500℃
作者机构：Department of Soil and Water ScienceCollege of Land Science and TechnologyChina Agricultural UniversityBeijing 100193China Agricultural and Animal Husbandry Technology Extension and Service Center of Wuyuan CountyBayannur 015100Inner MongoliaChina
出 版 物：《Biochar》 (生物炭（英文）)
年 卷 期：2022年第4卷第1期
页 面：1003-1012页
核心收录：
学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学]
基 金：the 13th five-year project of National Key Technology R&D Program(No.2016YFC0501306-02) the National Key Research and Development Program of China(2016YFC0501306)
主 题：Halophyte Biochar Structural elements Mineral elements Surface charges
摘 要：Glycophyte biomass-derived biochars are currently concerned in most ***,little attention is given to the char-acteristics of halophyte-derived *** this study,five typical halophytes of euhalophytes(Suaeda altissima,Suaeda salsa,and Kalidium foliatum),recretohalophytes(Phragmites australis),and pseudohalophytes(Tamarix chinensis)which are widely distributed in the arid and semiarid regions of northwestern China were selected for producing biochars with a slow pyrolysis process at 500℃for 1 *** harvested biochars were characterized in elemental content,pores,surface area,and surface charges,and then their potential value as a soil conditioner was *** results showed that the halophyte-derived biochars had variable ash and Na+contents,ranging from 7.26 to 23.64%and 1.06 to 33.93 g kg^(−1)*** EC value of the biochars ranged from 1.76 to 23.45 mS cm^(−1).The biochar derived from Suaeda altissima had a very low specific surface area(SSA),3.50 m^(2)g^(−1),while that derived from Phragmites australis(BPA)had a very high SSA,344.02 m^(2)g^(−1).All the biochars carried both positive and negative *** foliatum biochar(BKF)possessed more nega-tive charges,while Suaeda altissima biochar(BSA)contained more positive *** general,the halophyte biochars had a higher ash content and lower point of zero net charge(PZNC)value,compared with the biochars derived from glycophytes,which would imply their higher potential value as an acidic soil conditioner.
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