| 邵翼飞,张鹏,刘爱菊.生物炭对噻虫胺在土壤中吸附和降解的影响[J].农业环境科学学报,2019,38(11):2520-2527. |
| 生物炭对噻虫胺在土壤中吸附和降解的影响 |
| Effects of biochar on the adsorption and degradation of clothianidin in soil |
| 投稿时间：2019-04-25 |
| DOI：10.11654/jaes.2019-0460 |
| 中文关键词: 生物炭 噻虫胺 土壤 吸附 降解 |
| 英文关键词: biochar clothianidin soil adsorption degradation |
| 基金项目:天津市创新平台专项（19PTZWHZ00040）；天津市科技重大专项与工程（18ZXSZSF00110）；中国博士后科学基金（2019M651018） |
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| 中文摘要: |
| 为探究由不同热解温度和原材料制备的生物炭对噻虫胺在黑土中吸附和降解的影响，以玉米秸秆和猪粪为原材料，分别在300、500℃和700℃下限氧热解制备了六种生物炭，并将其添加到黑土中，研究生物炭对土壤理化性质与噻虫胺在土壤中吸附-降解的影响。结果表明：添加生物炭可显著提高土壤的pH、有效态磷和有机碳含量，降低土壤的H/C。噻虫胺在土壤及生物炭-土壤混合体系中的吸附过程符合Freundlich模型。添加生物炭显著提高了土壤对噻虫胺的吸附，且吸附量随生物炭热解温度的升高而增大。不同热解温度的生物炭对噻虫胺在土壤中降解的影响不同。高温生物炭-土壤混合体系的强吸附能力降低了噻虫胺被微生物降解的速率，但噻虫胺在低温生物炭-土壤混合体系中具有相对较高的微生物降解速率。因此，在利用生物炭修复农药污染土壤时应该充分考虑生物炭的类型和性质。 |
| 英文摘要: |
| In the present study, the effects of biochar on the soil properties and adsorption-degradation of clothianidin in black soil were explored. The biochar was obtained by pyrolyzing maize straw and pig manure at 300, 500, and 700℃. The results indicated that the pH, available P, and organic carbon of the biochar-soil mixtures were all significantly increased, while H/C decreased. The Freundlich isotherm was suitable for describing the clothianidin adsorption to soil and biochar-soil mixtures. Biochar addition significantly increased the adsorption of clothianidin, with a stronger effect at higher pyrolyzing temperature(PT). Biochar generally promoted an increase in the degradation rate of clothianidin in biochar-soil mixtures. The biochar amendments obtained at a high-PT inhabited the biodegradation of clothianidin, whilst the low-PT biochar promoted the biodegradation of clothianidin. Therefore, the type and properties of biochar should be considered during soil pesticide remediation. |
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