热解材料对生物炭理化性质的影响
Effects of Different Feedstocks on Physicochemical Characteristics of Pyrolyzed Biochars
查看参考文献43篇
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文摘
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生物质的热解材料会对其生物炭的物理化学性质产生较大影响,进而影响其田间应用效果。选取四种乔木(橡树、桑树、樟树和松树)、三种草本植物(芦苇、蒿和蕨类)和两种作物秸秆(玉米秆和油菜秆),在同等热解条件下(550 ℃)制备生物炭,对比其理化性质的差异。结果显示,秸秆生物炭的可溶性Cl-和K+含量、EC 和CEC 均显著高于乔木和草本生物炭,有效磷也呈现类似规律,而可溶性Na~+、Ca~(2+)和Mg~(2+)含量以及pH、SO_4~(2-)、NH_4~+-N、NO_3~--N 等指标在三类生物炭之间无显著差异。乔木生物炭和草本生物炭之间在各个指标上均无显著差异。这表明,从营养元素、CEC 和改良酸性土壤的角度来看,秸秆生物炭比乔木和草本生物炭更适合作为土壤改良剂。 |
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其他语种文摘
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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~+, Ca~(2+), Mg~(2+) and SO_4~(2-) ,pH, NH+4 -N and NO-3 -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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来源
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农业环境科学学报
,2015,34(9):1822-1828 【核心库】
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DOI
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10.11654/jaes.2015.09.027
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关键词
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生物炭
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热解材料
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物理化学性质
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土壤改良
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地址
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1.
四川省地矿局成都水文地质工程地质队, 环境地球化学国家重点实验室, 成都, 610072
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中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550002
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中国冶金地质总局昆明地质勘查院, 昆明, 650203
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1672-2043 |
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学科
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行业污染、废物处理与综合利用 |
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基金
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中国科学院战略性先导科技专项
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贵州省农业科技攻关项目
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中科院院地合作和科技支疆项目
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国家重大科学研究计划
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贵州省国际合作项目
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中国科学院西部之光人才培养计划
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文献收藏号
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CSCD:5529994
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