Phosphorus-doped g-C3N4 integrated photocatalytic membrane reactor for wastewater treatment

被引：113

作者：

Hu, Chechia ^{[1
,2
]}

Wang, Mao-Sheng ^{[1
,2
]}

Chen, Chien-Hua ^{[3
]}

Chen, Yi-Rui ^{[4
,5
]}

Huang, Ping-Hsuan ^{[1
,2
]}

Tung, Kuo-Lun ^{[4
,5
]}

机构：

[1] Chung Yuan Christian Univ, R&D Ctr Membrane Technol, Dept Chem Engn, Taoyuan 32023, Taiwan

[2] Chung Yuan Christian Univ, Res Ctr Circular Econ, Taoyuan 32023, Taiwan

[3] Natl Taiwan Univ Sci & Technol, High Speed 3D Printing Res Ctr, Dept Mech Engn, Taipei 10607, Taiwan

[4] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan

[5] Natl Taiwan Univ, Adv Res Ctr Green Mat Sci & Technol, Taipei 10617, Taiwan

来源：

JOURNAL OF MEMBRANE SCIENCE | 2019年 / 580卷

关键词：

Photocatalytic membrane reactor; P-doped g-C3N4; Wastewater treatment; ADVANCED OXIDATION PROCESSES; FIBER MEMBRANES; HOLLOW FIBERS; CARBON; DEGRADATION; PERFORMANCE; REMOVAL; PERMEABILITY; MODEL;

D O I：

10.1016/j.memsci.2019.03.012

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Photocatalytic membrane reactors (PMRs) have been widely used in wastewater treatment over the past few years. In this study, P-doped g-C3N4 (PCN), a metal-free, visible light (Vis)-driven photocatalyst, was prepared and coated on an Al2O3 substrate followed by integration with an inorganic Al2O3 hollow fiber membrane module for use as a PMR. The 10 wt % of PCN exhibited the highest degradation activity for methyl blue (MB) removal under Vis irradiation because the C sites and vacancies within the heptazine rings of the CN units were substituted with P to improve charge separation and reduce the number of unpaired electrons. The PMR exhibits higher efficiency and stability in the removal of MB, methyl orange, phenol solution, and a mixture of the three organic compounds than do individual hollow fiber membranes or photocatalysis systems. The TOC (total organic carbon) analysis revealed that more than 92% of the phenol was decomposed and mineralized in the PMR, which also had a MB removal efficiency of greater than 90% when repeatedly used for four times. These results indicate that the PMR developed in this study is highly active and stable, and can serve as a promising system for effective removal of organic pollutants in wastewater.

引用

页码：1 / 11

页数：11