In this study, the impact of biochar on the degradation of organophosphate esters (OPEs) during the aerobic composting of sewage sludge was investigated. Three treatments were conducted with different percentages of biochar in the compost, including 5 %, 10 %, and 20 %. The treatment with 10 % of biochar showed the longest thermophilic phase compared to that of 5 % and 20 % of biochar, which greatly promoted the decomposition of organic matter. In addition, the degradation rate of the hard-to-degrade chlorinated-OPEs was significantly increased by 10 % biochar, reaching to 57.2 %. Correspondingly, approximately 43.6 % of the total concentration of OPEs (Σ₆OPEs) was eliminated in the presence of 10 % of biochar, which was higher than the treatments with 5 % and 20 % of biochar. Biochar significantly influenced the microbial community structure of compost, but the previously reported organophosphorus-degrading bacteria did not play a major role in the degradation of OPEs. The redox ability of the increased oxygen-containing functional groups such as quinone on the surface of biochar and the biochar-mediated electron transfer ability may play an essential role in the degradation of OPEs during the composting process.

在这项研究中，研究了生物炭对污水污泥好氧堆肥过程中有机磷酸酯（OPEs）降解的影响。用堆肥中不同百分比的生物炭进行了三种处理，包括 5%、10% 和 20%。与5%和20%的生物炭相比，10%的生物炭处理显示出最长的嗜热阶段，极大地促进了有机物的分解。此外，难降解氯代OPEs的降解率每增加10%生物炭显着提高，达到57.2%。相应地，大约 43.6% 的 OPE 总浓度（Σ ₆OPEs) 在 10% 的生物炭存在下被消除，高于 5% 和 20% 的生物炭处理。生物炭显着影响堆肥的微生物群落结构，但之前报道的有机磷降解菌在 OPEs 的降解中并没有发挥主要作用。生物炭表面增加的醌等含氧官能团的氧化还原能力和生物炭介导的电子转移能力可能在堆肥过程中OPEs的降解中起重要作用。