Solar-driven degradation of water-borne micropollutants via novel photocatalytic polymer membranes with active porphyrin surface layer(SOLEMBA)

通过具有活性卟啉表面层的新型光催化聚合物膜，太阳能驱动的水载微污染物降解（SOLEMBA）

• 批准号: 500108120
• 负责人: Professor Dr. Bryce Richards
• 金额: --
• 依托单位: Institut für Mikrostrukturtechnik (IMT)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/500108120?language=en
• 关键词: Solar; driven; degradation; water; borne

The main objective of the SOLEMBA project is to develop a small lab-scale platform for MP removal via photocatalytic ultrafiltration (UF) reactor, wherein the photodegradation process is initiated by singlet oxygen (1O2). In turn, 1O2 is generated inside the membrane pores using irradiation of organic photosensitizers with visible light. This platform builds on encouraging preliminary results from the applicants and will include: i) fabrication of photocatalytic UF membranes based on commercially-available onto poly(vinylidene fluoride) (PVDF) or polytertafluoretylene (PTFE) ultrafitration membranes and also commercially-available organic photosensitizers (PS), such as fluorinated porphyrins and phthalocyanine; ii) study of photostability of both PS and the UF membranes under simulated solar radiation; iii) photocatalytic removal of steroid hormone micropollutants (MP) with concentrations as low as several ng/L in a custom-made photocatalytic membrane (PCM) reactor; iv) systematic investigation of MP photodegradation using variable parameters (light intensity, micropollutant concentration, temperature, pH, and flow rate of the feed solution); and v) investigation of influence of real water contaminants such as natural organic matter (NOM) or humic substances (HS) that may through surface coverage or/and 1O2 quenching inhibit the process of photodegradation. The removal of MPs in the PCM exhibits significant advantages because it: •significantly improves the removal via in-situ photodecomposition of MPs; •capitalizes on the use of energy-efficient low-pressure UF membranes; •allows for the use of sunlight for the degradation of MPs; and •potentially solves the problem of retained MPs in concentrate requiring further treatment.

SOLEMBA项目的主要目的是开发一个小型实验室尺度平台，通过光催化超滤（UF）反应器去除MP，其中光降解过程是由单氧启动的（1O2）。反过来，使用具有可见光的有机光敏剂照射在膜孔内产生1O2。 This platform builds on encouraging preliminary results from the applicants and will include: i) fabrication of photocatalytic UF Membranes based on commercially-available onto poly(vinylidene fluoride) (PVDF) or polytertafluorite (PTFE) ultrafitting mechanisms and also commercially-available organic photosenisitizers (PS), such as fluorinated porphyrins and邻苯烷氨酸； ii）研究在模拟太阳辐射下PS和UF膜的光稳定性； iii）在定制的光催化膜（PCM）反应器中，浓度低至几个Ng/L的立体激素微污染物（MP）的光催化去除； iv）使用可变参数（光强度，微污染物浓度，温度，pH和进料溶液的流速）对MP光降解的系统投资； v）实际水污染物的影响，例如天然有机物（NOM）或腐殖质（HS），这些物质（HS）可能通过表面覆盖范围或//和1O2淬火抑制光降解过程。 PCM中MP的去除具有显着优势，因为它：•通过MPS的原位光电分解可显着改善去除； •利用节能低压UF膜的使用； •允许使用阳光来降解MPS； •有可能解决需要进一步治疗的浓度保留MP的问题。