Complete elimination with a combined system of aerobic granular sludge and photocatalytic technology for the treatment of petroleum refinery wastewater

好氧颗粒污泥与光催化技术组合系统彻底消除炼油废水处理

• 批准号: 21J10826
• 负责人: MING Jie
• 金额: $ 0.96万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-28 至 2023-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21J10826/
• 关键词: Water purification; Photocatalysis; Z-scheme; High-efficiency; Public health; Water disinfection; Safety and stability

In this fiscal year, the study was carried out through the following key points: (1) Develop Z-scheme g-C3N4-Ag/Ag2O/BiPO4/Bi2WO6 (CN-Ag/P/BWO) for water purification; (2) Investigate the disinfection activity for Enterococcus sp.; (3) Clarify the disinfection mechanism for Enterococcus sp.; (4) Evaluate the practicability to environmental water disinfection; (5) Reveal the cyclic ability of CN-Ag/P/BWO immobilized system; (6) Explore the degradation activity of CN-Ag/P/BWO for organics (phenol/tetracycline). The results showed that Z-scheme CN-Ag/P/BWO was successfully constructed with remarkable disinfection performance for Enterococcus sp.. The disinfection mechanism demonstrated the major roles of photogenerated holes, superoxide radicals and hydroxyl radicals. The deteriorated antioxidant system was responsible for the damaged cell membrane and energy system, further leading to the leakage of intracellular components and final collapse of bacteria. CN-Ag/P/BWO exhibited high practicability to environmental water disinfection. Besides, the immobilized CN-Ag/P/BWO system showed high activity for Enterococcus sp. disinfection during five cycles. Although, CN-Ag/P/BWO exhibited poor performance for phenol degradation due to its stable π-conjugated structure, 97% of tetracycline was removed after 60-min treatment, indicating its high photocatalytic activity and prospect for antibiotics degradation. Therefore, this work provides a high-efficiency technology for water purification, contributing to the improvement of public health and environment.

本财年，重点开展了以下研究：（1）开发用于水净化的Z型g-C3N4-Ag/Ag2O/BiPO4/Bi2WO6（CN-Ag/P/BWO）；（2）研究肠球菌的消毒活性；（3）阐明肠球菌的消毒机理；（4）评估环境水消毒的实用性； (5)揭示CN-Ag/P/BWO固定化体系的循环能力;(6)探索CN-Ag/P/BWO对有机物(苯酚/四环素)的降解活性。成功构建了Ag/P/BWO，对肠球菌具有显着的消毒性能。其消毒机理证明了光生空穴、超氧自由基和羟基自由基的主要作用。降解的抗氧化系统导致细胞膜和能量系统受损，进一步导致细胞内成分的渗漏和细菌的最终崩溃。此外，固定化的CN-Ag对环境水消毒具有很高的实用性。 /P/BWO 系统在五个循环中显示出对肠球菌的高活性。尽管 CN-Ag/P/BWO 由于其稳定的 π 共轭结构而表现出较差的苯酚降解性能，处理60分钟后，97%的四环素被去除，表明其具有较高的光催化活性和抗生素降解前景，因此，这项工作为水净化提供了一种高效的技术，有助于改善公众健康和环境。

项目成果

Photocatalytic disinfection of novel composites Ag/Ag2O/BiPO4/Bi2WO6 under solar light irradiation

太阳光照射下新型复合材料Ag/Ag2O/BiPO4/Bi2WO6的光催化消毒

• 发表时间: 2021
• 作者: Jie Ming; Na Liu;Qiansu Ma; Yingnan Yang
• 通讯作者: Yingnan Yang

Visible light active graphene oxide modified Ag/Ag2O/BiPO4/Bi2WO6 for photocatalytic removal of organic pollutants and bacteria in wastewater

可见光活性氧化石墨烯修饰Ag/Ag2O/BiPO4/Bi2WO6光催化去除废水中的有机污染物和细菌

• DOI: 10.1016/j.chemosphere.2022.135512
• 发表时间: 2022
• 影响因子: 8.8
• 作者: Ma Qiansu;Ming Jie;Sun Xiang;Liu Na;Chen Guoping;Yang Yingnan
• 通讯作者: Yang Yingnan

Sustainable and efficient reduction of pollutants by immobilized PEG-P/Ag/Ag2O/Ag3PO4/TiO2 photocatalyst for purification of saline wastewater

固定化 PEG-P/Ag/Ag2O/Ag3PO4/TiO2 光催化剂可持续高效地减少污染物净化含盐废水

• DOI: 10.1016/j.marpolbul.2022.113731
• 发表时间: 2022
• 影响因子: 5.8
• 作者: Sharma Aditya;Ming Jie;Liu Na;Sun Xiang;Zhu Yunxin;Yano Minami;Chen Guoping;Yang Yingnan
• 通讯作者: Yang Yingnan

Development of a Solar-controllable Microalgal Pretreatment Device Equipped with the Optimized Photocatalytic Mesh Stack Structure

优化光催化网状堆叠结构的太阳能可控微藻预处理装置的研制

• 发表时间: 2022
• 作者: Cheng Zhang; Jie Ming; Yingnan Yang
• 通讯作者: Yingnan Yang

Bactericidal process and practicability for environmental water sterilization by solar-light-driven Bi2WO6-based photocatalyst

太阳光驱动Bi2WO6基光催化剂的杀菌过程及环境水消毒的实用性

• DOI: 10.1016/j.jwpe.2022.102713
• 发表时间: 2022
• 影响因子: 7
• 作者: Ming Jie;Liu Na;Ma Qiansu;Sharma Aditya;Sun Xiang;Kawazoe Naoki;Chen Guoping;Yang Yingnan
• 通讯作者: Yang Yingnan