Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 344, Issue -, Pages 1229-1239Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2017.11.044
Keywords
Ceramic membrane; CuMn2O4 particles; Catalytic ozonation; Surface coating; Emerging pollutants
Categories
Funding
- Fundamental Research Funds for the Central Universities [2015ZCQ-HJ-02]
- Beijing Natural Science Foundation [L160006]
- National Natural Science Foundation of China [51578520, 51378063, 41273137, 51108030]
Ask authors/readers for more resources
A novel catalytic ceramic membrane (CM) for improving ozonation and filtration performance was fabricated by surface coating CuMn2O4 particles on a tubular CM. The degradation of ultraviolet (UV) absorbers, reduction of toxicity, elimination of membrane fouling and catalytic mechanism were investigated. The characterization results suggested the particles were well-fixed on membrane surface. The modified membrane showed improved benzophenone-3 removal performance (from 28% to 34%), detoxification (EC50 as 12.77%) and the stability of catalytic activity. In the degradation performance of model UV absorbers, the developed membrane significantly decreased the UV254 and DOC values in effluent. Compared with a virgin CM, this CM ozonation increased water flux as 29.9% by in-situ degrade effluent organic matters. The CuMn2O4 modified membrane enhanced the ozone self-decompose to generate O-center dot(2)- and initiated the chain reaction of ozone decomposition, and subsequently reacted with molecule ozone to produce (OH)-O-center dot. Additionally, CM was able to promote the interaction between ozone and catalyst/organic chemicals to form H2O2 that promoted the formation of (OH)-O-center dot. This catalytic ceramic membrane combining with ozonation showed potential applications in emerging pollutant degradation and membrane fouling elimination, and acted as a novel ternary technology for wastewater treatment and water reuse. (C) 2017 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available