Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China.
Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
Int J Environ Res Public Health. 2018 Nov 14;15(11):2557. doi: 10.3390/ijerph15112557.
Composted sewage sludge (CSS) has been extensively used in agriculture and landscaping, offering a practical solution for waste disposal. However, some pharmaceutical and personal care products (PPCPs) like triclosan (TCS) and carbamazepine (CBZ) have restricted its land application. In this study, CSS was added to agricultural soil and garden soil at 0%, 5%, 10%, and 25% (/ soil), and 4 mL of TCS and CBZ stock solution (1000 mg/L in methanol) was spiked into soil amended with CSS of each bottle to arrive at the concentration of 10 mg/kg. Samples were then collected after incubation for 120 days and analyzed for concentrations and half-life () of TCS and CBZ, and soil physicochemical properties, together with enzyme activities. The results showed that TCS was degraded completely during the incubation period. In contrast, only about 5.82⁻21.43% CBZ was degraded. CSS amendment inhibited TCS and CBZ degradation and prolonged compared to the control, and the of TCS and CBZ increased with CSS addition amount in all treatments except for CBZ in the garden soil amended with 10% CSS. Correlation studies showed a significantly positive relationship between of TCS and CBZ and total organic carbon (TOC), while a significantly negative relationship between of the two PPCPs and pH was observed. Alkaline phosphatase showed a significantly negative relationship with the C/C₀ of TCS in garden soil amended with 25% CSS and CBZ in the control. The urease activity was negatively correlated with the C/C₀ of TCS in 10% and 25% CSS treatments and CBZ in 10% CSS treatment for garden soil.
堆肥污水污泥 (CSS) 已广泛应用于农业和园林景观，为废物处理提供了一种实用的解决方案。然而，一些药物和个人护理产品 (PPCP) 如三氯生 (TCS) 和卡马西平 (CBZ) 限制了其土地应用。在本研究中，CSS 以 0%、5%、10%和 25%（/土壤）的比例添加到农业土壤和园林土壤中，将 4 mL TCS 和 CBZ 储备溶液（甲醇中 1000 mg/L）加入到每个 CSS 瓶中添加的土壤中，使土壤中 TCS 和 CBZ 的浓度达到 10 mg/kg。然后在培养 120 天后收集样品，分析 TCS 和 CBZ 的浓度和半衰期 ( )，以及土壤理化性质和酶活性。结果表明，TCS 在培养期间完全降解。相比之下，只有约 5.82% - 21.43% 的 CBZ 被降解。CSS 修正案抑制了 TCS 和 CBZ 的降解，延长了半衰期，与对照相比，除了在添加 10% CSS 的园林土壤中 CBZ 外，TCS 和 CBZ 的半衰期随着 CSS 添加量的增加而增加。相关性研究表明，TCS 和 CBZ 的半衰期与总有机碳 (TOC) 呈显著正相关，而这两种 PPCP 的半衰期与 pH 值呈显著负相关。在添加 25% CSS 的园林土壤中，碱性磷酸酶与 TCS 的 C/C₀ 呈显著负相关，而在对照中，CBZ 与 C/C₀ 呈显著负相关。在添加 10% 和 25% CSS 的处理中，脲酶活性与 TCS 的 C/C₀ 呈负相关，在添加 10% CSS 的处理中，与 CBZ 的 C/C₀ 呈负相关。
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