Novel RGO–ZnWO4–Fe3O4 nanocomposite as high performance visible light photocatalyst

RSC Advances ◽  
2016 ◽  
Vol 6 (66) ◽  
pp. 61821-61829 ◽  
Author(s):  
M. Mohamed Jaffer Sadiq ◽  
U. Sandhya Shenoy ◽  
D. Krishna Bhat
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Microwave Irradiation ◽  
Visible Light ◽  
High Performance ◽  
Waste Water Treatment ◽  
Microwave Irradiation Method ◽  
Rapid Synthesis ◽  
Visible Light Photocatalyst ◽  
Template Free

Scalable, facile, template-free and rapid synthesis of high performance, eco-friendly photocatalysts using a microwave irradiation method for waste water treatment.

Influence of CdO-doping on the photoluminescence properties of ZnO nanofibers: Effective visible light photocatalyst for waste water treatment

2012 ◽  
Vol 132 (7) ◽  
pp. 1668-1677 ◽  
Author(s):  
Ayman Yousef ◽  
Nasser A.M. Barakat ◽  
Touseef Amna ◽  
Afeesh R. Unnithan ◽  
Salem S. Al-Deyab ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Visible Light ◽  
Waste Water Treatment ◽  
Photoluminescence Properties ◽  
Visible Light Photocatalyst ◽  
Zno Nanofibers

High Performance and N & P-Removable On-Site Domestic Waste Water Treatment System by Multi-Soil-Layering Method

1993 ◽  
Vol 27 (1) ◽  
pp. 31-40 ◽  
Author(s):  
T. Wakatsuki ◽  
H. Esumi ◽  
S. Omura
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
High Performance ◽  
Waste Water Treatment ◽  
Treatment System ◽  
Septic Tank ◽  
Horizontal Distance ◽  
Domestic Waste ◽  
Water Treatment System ◽  
Soil Layering

Multi-Soil-Layering (MSL) method was applied to make appropriate, but high performance and N & P-removable, on-site domestic waste water treatment system. The MSL soil unit is composed from soil layer mixed with 10∼25% of metal iron and pelletized jute. The MSL units were piled in a brick pattern at 5cm vertical and 10cm horizontal distance, which were surrounded by layers of Zeolite. Air can be supplied through porous pipes installed at adequate depths of the MSL system. The systems were tested using model houses. The waste waters, which were pretreated by septic tank to the level of SS 29-75, BOD 42-116, COD 32-56, T-N 29-86, and T-P 6-11 mg−l−1 respectively, could be treated at the rate of 100-850 1·m−2·d−1 without significant clogging. The mean concentrations of treated waters were SS 15, BOD 8.7, COD 11, T-N 6.8, and T-P 0.86 mg·1−1 respectively. Zeolite layers and brick pattern prevent clogging. Metal iron and jute pellets were effective to remove Phosphate and Nitrate. Intensive aeration assists decomposition of BOD, COD, and SS as well as nitrification, but decreases denitrif ication and phosphate fixation. The degree of purification could be controlled by setting adequate aeration.

scholarly journals Facile Solvothermal Synthesis of Hollow BiOBr Submicrospheres with Enhanced Visible-Light-Responsive Photocatalytic Performance

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Linrui Hou ◽  
Yawei Niu ◽  
Fan Yang ◽  
Fengyue Ge ◽  
Changzhou Yuan
Keyword(s):  
Waste Water ◽  
Methyl Orange ◽  
Water Treatment ◽  
Visible Light ◽  
Solvothermal Synthesis ◽  
Photocatalytic Performance ◽  
Waste Water Treatment ◽  
Commercial Application ◽  
Visible Light Absorption ◽  
Photocatalytic Activities

In this work, hierarchical hollow BiOBr submicrospheres (HBSMs) were successfully prepared via a facile yet efficient solvothermal strategy. Remarkable effects of solvents upon the crystallinities, morphologies, and microstructures of the BiOBr products were systematically investigated, which revealed that the glycerol/isopropanol volumetric ratio played a significant role in the formation of hollow architecture. Accordingly, the underlying formation mechanism of the hollow submicrospheres was tentatively put forward here. Furthermore, the photocatalytic activities of the resulting HBSMs were evaluated in detail with photocatalytic degradation of the organic methyl orange under visible light irradiation. Encouragingly, the as-obtained HBSMs with striking recyclability demonstrated excellent visible-light-responsive photocatalytic performance, which benefits from their large surface area, effective visible light absorption, and unique hollow feature, highlighting their promising commercial application in waste water treatment.

Polar Organic Pollutants on Their Way from Waste Water to Drinking Water

1992 ◽  
Vol 25 (11) ◽  
pp. 241-248 ◽  
Author(s):  
H. Fr. Schröder
Keyword(s):  
Waste Water ◽  
Drinking Water ◽  
Water Treatment ◽  
High Performance ◽  
Waste Water Treatment ◽  
Sewage Treatment ◽  
Drinking Water Treatment ◽  
Mass Spectrometers ◽  
Water Treatment Process ◽  
On Line

The examination of pollutants in waste-, surface- and drinking water by sum parameters like COD, BOD or TOC gives no information about their toxicity or behaviour in the drinking water treatment process. As many pollutants leaving sewage treatment plants are polar and/or thermolabile, gas Chromatographic (GC) separation coupled on-line with a mass spectrometer (MS) is not applicable to this problem. Newly established analytical methods like high performance liquid chromatography (HPLC) in on-line combination with mass- (MS) or tandem mass spectrometers (MS/MS) using soft ionization techniques like thermospray (TSP) would help to solve these problems. The comparison of GC- and LC/MS-spectra demonstrates increasing polarity beginning at the waste water treatment and ending at the drinking water treatment. It was possible to identify and quantify selected compounds, and elimination efficiency could be reviewed by comparing overview spectra. The knowledge about the existence of these compounds in waste-, surface- and drinking water requires strategies for elimination, avoidance or degradation.

Synthesis of a hydrogen producing nanocrystalline ZnFe2O4 visible light photocatalyst using a rapid microwave irradiation method

RSC Advances ◽  
2012 ◽  
Vol 2 (33) ◽  
pp. 12782 ◽  
Author(s):  
Rekha Dom ◽  
R. Subasri ◽  
Neha Y. Hebalkar ◽  
A. Sadananda Chary ◽  
Pramod H. Borse
Keyword(s):  
Microwave Irradiation ◽  
Visible Light ◽  
Microwave Irradiation Method ◽  
Visible Light Photocatalyst
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