Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay Area, Guangzhou University, Guangzhou 510006, China.
Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay Area, Guangzhou University, Guangzhou 510006, China; Institute of Rural Revitalization, Guangzhou University, Guangzhou 510006, China.
Environ Pollut. 2023 Nov 15;337:122536. doi: 10.1016/j.envpol.2023.122536. Epub 2023 Sep 14.
For the sustainable reutilization of poultry feces (PF) to reduce environmental pollution, we present a novel approach for converting PF into a highly effective catalyst, consisting of trace copper (Cu) and sulfur (S) linked with ordered graphitized carbon (CS/CPF) for wastewater purification. Raman and EPR results verified that the disorderly organic matters in PF are transformed into orderly graphene structures that complexed with Cu to form large numbers of electron-poor/rich microregions on CS/CPF surface. The electrons from electron-rich organic pollutants can be directly captured by dissolved oxygen (DO) to produce abundant reactive oxygen species due to the enhanced electron polarization via the construction of Cu-S-C bond bridge on CS/CPF surface, which greatly enhance the removal efficiency of pollutants. CS/CPF achieves 100% removal for 2,4-dichlorophenoxyacetic acid (2,4-D) in just 10 min after adding trace peroxymonosulfate (PMS), keeping efficient catalytic activity after continuous reactions for 240 h. This strategy offers a practical and sustainable solution for the efficient resource recovery of poultry feces.
为了实现家禽粪便（PF）的可持续再利用，以减少环境污染，我们提出了一种将 PF 转化为高效催化剂的新方法，该催化剂由痕量铜（Cu）和硫（S）与有序石墨化碳（CS/CPF）结合而成，可用于废水净化。拉曼和 EPR 结果验证了 PF 中无序的有机物转化为有序的石墨烯结构，这些结构与 Cu 复合，在 CS/CPF 表面形成大量电子贫乏/丰富的微区。由于 CS/CPF 表面 Cu-S-C 键桥的构建增强了电子极化，来自富电子有机污染物的电子可以直接被溶解氧（DO）捕获，从而产生丰富的活性氧物种，这极大地提高了污染物的去除效率。在添加痕量过一硫酸盐（PMS）后，CS/CPF 仅需 10 分钟即可实现 2,4-二氯苯氧乙酸（2,4-D）的 100%去除，连续反应 240 小时后仍保持高效的催化活性。该策略为家禽粪便的高效资源回收提供了实用且可持续的解决方案。
