用过的咖啡生物炭/颗粒活性炭活化过一硫酸盐和过二硫酸盐在再生水中去除尿素以生产超纯水。
Urea removal in reclaimed water used for ultrapure water production by spent coffee biochar/granular activated carbon activating peroxymonosulfate and peroxydisulfate.
机构信息
Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China; Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin 300384, China.
Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China; Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
出版信息
Bioresour Technol. 2022 Jan;343:126062. doi: 10.1016/j.biortech.2021.126062. Epub 2021 Sep 30.
This study evaluated the performance of spent coffee biochar (SCBC)/granular activated carbon (GAC) activating peroxymonosulfate (PMS) and peroxydisulfate (PDS) for urea degradation in reclaimed water used for ultrapure water production. Results showed that catalyst and oxidant wielded a great influence on urea removal. Of them, the GAC-PMS system could completely remove urea at the least oxidant (1 g/L) and catalyst dosage (0.2 g/L). GAC activating PMS mainly depended on graphite C structure and minor oxygen functional groups. However, the amounts of urea removed by 600BC-PMS and 900BC-PMS were 57% and 70%, respectively. In the PDS system, the urea removal through GAC-PDS could reach 90%, which mainly depends on the graphite C structure of GAC. Using the same conditions, the urea removal of 900BC-PDS was similar to GAC-PDS, so it has some potential as an alternative to commercial GAC.
本研究评估了废咖啡生物炭（SCBC）/颗粒活性炭（GAC）活化过一硫酸盐（PMS）和过二硫酸盐（PDS）用于处理用于超纯水生产的再生水中尿素降解的性能。结果表明，催化剂和氧化剂对尿素去除有很大影响。其中，GAC-PMS 体系在最低氧化剂（1 g/L）和催化剂剂量（0.2 g/L）下即可完全去除尿素。GAC 活化 PMS 主要依赖于石墨 C 结构和少量含氧官能团。然而，600BC-PMS 和 900BC-PMS 去除的尿素量分别为 57%和 70%。在 PDS 体系中，GAC-PDS 对尿素的去除率可达 90%，这主要依赖于 GAC 的石墨 C 结构。使用相同的条件，900BC-PDS 对尿素的去除效果与 GAC-PDS 相似，因此它具有作为商业 GAC 的替代物的一些潜力。
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