| 玉米秸秆和污泥共热解制备的生物质炭及其对盐碱土壤理化性质的影响 |
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| 引用本文： | 韩剑宏,李艳伟,姚卫华,张连科,余维佳,焦丽燕.玉米秸秆和污泥共热解制备的生物质炭及其对盐碱土壤理化性质的影响[J].水土保持通报,2017,37(4):92-98,105. |
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| 作者姓名： | 韩剑宏 李艳伟 姚卫华 张连科 余维佳 焦丽燕 |
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| 作者单位： | 1. 内蒙古科技大学能源与环境学院,内蒙古包头,014010;2. 包头市辐射环境管理处,内蒙古包头,014010;3. 晖泽水务(青州)有限公司,山东青州,262500 |
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| 基金项目： | 内蒙古自治区自然科学基金项目“秸秆污泥生物炭对内蒙古沿黄滩地盐碱地土壤肥力的影响”（2016MS0405），“油料作物生物炭对包头铁矿区农田土壤中铅的稳定化研究”（2016MS0221）；内蒙古科技大学产学研合作培育项目（CXY201603） |
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| 摘 要： | 目的]研究不同温度制备的玉米秸秆和污泥基生物质炭不同施加量对盐碱土壤基本理化性质的影响,为盐碱土改良及土壤污染物质的生态修复等方面的研究提供科学依据。方法]以质量比5∶2的玉米秸秆和剩余活性污泥为原料,分别在300,350,400,450,500℃共5个不同温度条件下热解制备生物质炭,通过扫描电镜、元素分析和红外光谱对其性质及结构进行分析,并通过培养试验研究其对盐碱土壤基本理化性质的影响。结果]随着热解温度的升高,生物质炭微观结构越发达,比表面积越大,表面官能团的种类和数量也产生了显著性变化;同时随着热解温度逐渐升高,生物质炭C含量不断增加,而O,H和N含量却逐渐降低;添加玉米秸秆和污泥共热解制备的生物质炭能够显著增加盐碱土壤中有机碳含量,而土壤中总氮、总磷、有效磷、速效钾含量变化幅度较小;水溶性盐含量降低明显;加入生物质炭后大幅度提高了土壤阳离子交换能力,添加量越大,阳离子交换量越大;但生物质炭对土壤pH值影响不大。结论]玉米秸秆和污泥基生物质炭提高了土壤养分含量和肥力指标,降低了土壤盐碱性。玉米秸秆和污泥基生物质炭可用于盐碱土壤的改良。
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| 关 键 词： | 生物质炭 盐碱土壤 玉米秸秆 剩余活性污泥 热解温度 改良 |
| 收稿时间： | 2016/11/2 0:00:00 |
| 修稿时间： | 2016/12/21 0:00:00 |
Co-pyrolysis Preparing Biochar with Corn Straw and Sewage Sludge and Its Effects on Saline Soil Improvement |
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| HAN Jianhong,LI Yanwei,YAO Weihu,ZHANG Lianke,YU Weijia and JIAO Liyan.Co-pyrolysis Preparing Biochar with Corn Straw and Sewage Sludge and Its Effects on Saline Soil Improvement[J].Bulletin of Soil and Water Conservation,2017,37(4):92-98,105. |
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| Authors: | HAN Jianhong LI Yanwei YAO Weihu ZHANG Lianke YU Weijia and JIAO Liyan |
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| Institution: | School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, China,School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, China,School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, China,School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, China,Baotou Radiation Environment Management, Baotou, Inner Mongolia 014010, China and Huize Water(Qingzhou) Co. Ltd., Qingzhou, Shandong 262500, China |
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| Abstract: | Objective] Five types of biochar were prepared by corn straw and sludge at different temperature,the effects of different biochar applications on basic soil physical and chemical properties were examined to provide scientific basis for the improvement of saline alkali soil and the ecological restoration of soil pollution.Methods] Five types of biochars were prepared by corn straw and sewage sludge at the temperatures of 300,350,400,450,500 ℃,the structure and properties of biochars were characterized by scanning electron microscope(SEM),element assay and fourier transform infrared spectroscopy(FTIR).A laboratory incubation study was conducted to examine the effects of biochar on the basic physical and chemical properties in saline soil.Results] The element C content increased and the elements O,H,N gradually reduced when temperature increased.With the increase of biochar,the content of organic carbon in the saline soil was significantly improved;while the mineral nitrogen,phosphorus,available phosphorus and available potassium changed very little;the content of CEC in the saline soil was significantly improved,the pH value was slightly lower,the content of soluble salts decreased significantly.Conclusion] Corn straw and sludge-based biochar can improve the saline soil nutrient content and fertility index,and can reduce the soil salt.Corn straw and sludge-based biochar can be used for the improvement of saline soil. |
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| Keywords: | biochar saline soil corn straw manicipal slugde pyrolysis temperature improvement |
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