Fe-impregnated biochar was assessed as a method to remove the pesticide pollutant chlorpyrifos, utilizing biochar/FeO_x composite synthesized via chemical coprecipitation of Fe³⁺/Fe²⁺ onto Cyperus alternifolius biochar. Fe-impregnated biochar exhibited a higher sorption capacity than pristine biochar, resulting in more efficient removal of chlorpyrifos from water. Soil was dosed with pristine or Fe-impregnated biochar at 0.1 or 1.0% w/w, to evaluate chlorpyrifos uptake in Allium fistulosum L. (Welsh onion). The results showed that the average concentration of chlorpyrifos and its degradation product, 3,5,6-trichloro-2-pyridinol (TCP), decreased in A. fistulosum L. with increased levels of pristine biochar and Fe-biochar. Fe-biochar was found to be more effective in reducing the uptake of chlorpyrifos by improving the sorption ability and increasing plant root iron plaque. Bioavailability of chlorpyrifos is reduced with both biochar and Fe-biochar soil dosing; however, the greatest persistence of chlorpyrifos residues was observed with 1.0% pristine biochar. Microbial community analysis showed Fe-biochar to have a positive impact on the efficiency of chlorpyrifos degradation in soils, possibly by altering microbial communities.

中文翻译：

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使用铁浸渍的生物炭有效地吸收毒死rif，减少瘘丝葱的吸收，并增强微生物群落多样性

通过将Fe ³⁺ / Fe ²⁺化学共沉淀到交替莎草生物炭上合成的生物炭/ FeO _x复合物，评估了浸有Fe的生物炭作为去除农药污染物毒死rif的方法。浸有铁的生物炭比原始生物炭具有更高的吸附能力，从而可以更有效地从水中去除毒死rif。向土壤中添加0.1或1.0％w / w的原始或含Fe的生物炭，以评估在葱葱中的毒死rif摄入量。结果表明，瘘管中毒死rif及其降解产物3,5,6-三氯-2-吡啶醇（TCP）的平均浓度降低。L.的原始生物炭和铁生物炭含量增加。发现铁生物炭通过提高吸附能力和增加植物根系铁斑块，在减少毒死the吸收方面更为有效。施用生物炭和铁-生物炭土壤都降低了毒死rif的生物利用度；但是，使用1.0％的原始生物炭观察到毒死rif残留的最大持久性。微生物群落分析表明，Fe-生物炭对土壤中毒死rif的降解效率具有积极影响，这可能是通过改变微生物群落而引起的。