Photo-oxidation Technologies for Advanced Water Treatment

2020 ◽  
pp. 221-255
Author(s):  
Rakesh Kumar Sharma ◽  
Bhavya Arora ◽  
Sriparna Dutta ◽  
Manoj B. Gawande
Keyword(s):  
Water Treatment ◽  
Photo Oxidation

Photodegradation of organic pollutants in water by immobilized porphyrins and phthalocyanines

2016 ◽  
Vol 20 (01n04) ◽  
pp. 150-166 ◽  
Author(s):  
Lucía Fernández ◽  
Valdemar I. Esteves ◽  
Ângela Cunha ◽  
Rudolf J. Schneider ◽  
João P.C. Tomé
Keyword(s):  
Water Treatment ◽  
Organic Pollutants ◽  
Photocatalytic Performance ◽  
Photocatalytic Properties ◽  
Photo Oxidation ◽  
New Methods ◽  
Different Types ◽  
Pollution Impact ◽  
Water Treatments

New methods for water treatment are required as a result from an increasing awareness in the reduction of the pollution impact in the environment. In the perspective of the photo-oxidation of organic pollutants present in water, the principal incentive for the preparation of heterogeneous photocatalysts is their easy recovery from the reaction mixture, which allows their reuse in successive runs, minimizing the loss of their original photocatalytic properties. Different types of supports can be used in the immobilization of photoactive species, such as porphyrins (Pors) and phthalocyanines (Pcs). This mini-review will consider the different methodologies for the immobilization of Pors and Pcs and their photocatalytic performance in the photodegradation of organic pollutants in water, addressing also their recycling ability in successive water treatments.

scholarly journals The Function of Adsorption, Photo-Oxidation, and Humic Acid Using Air Backwashing in Integrated Water Treatment of Multichannel Ceramic MF and PP Particles

Membranes ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 28
Author(s):  
Sangwoo Park ◽  
Dongyeop Kim ◽  
Jin Yong Park
Keyword(s):  
Humic Acid ◽  
Water Treatment ◽  
Uv Radiation ◽  
Membrane Fouling ◽  
Fouling Resistance ◽  
Organic Matters ◽  
Photo Oxidation ◽  
Dissolved Organic Matters ◽  
Treatment Function

For advanced water treatment, function of microfiltration (MF), adsorption, photo-oxidation, humic acid (HA), and polypropylene (PP) particles on membrane fouling and decay effectiveness were investigated in an integrated water treatment, of multichannel ceramic MF and PP particles, using UV radiation and air backwashing. The synthetic feed was organized with HA and kaolin. The membrane fouling resistance (Rf) of the (MF + PP) system presented the lowermost, and amplified intensely from the (MF + UV) to MF system. The percentages of MF and adsorption by PP particles for turbidity treatment were 87.6% and 3.8%, individually; however, the percentages of MF and adsorption by PP particles for dissolved organic matters (DOM) treatment were 27.9% and 5.0%, respectively. The decay effectiveness of turbidity presented the greatest 95.4% at HA of 10 mg/L; however, that of DOM increased as HA concentration ascended. The ultimate Rf after 180 min procedure showed the maximum at 30 g/L of PP particles concentration, and improved dramatically, as PP particles decreased. Finally, the maximum VT was acquired at 30 and 50 g/L of PP particles, because flux preserved greater throughout the procedure. The decay effectiveness of turbidity and DOM showed the maximal 95.4% and 56.8% at 40 and 50 g/L of PP particles, respectively.

Sign in / Sign up

Export Citation Format

Share Document