Photolysis of graphene oxide in the presence of nitrate: implications for graphene oxide integrity in water and wastewater treatment

2019 ◽  
Vol 6 (1) ◽  
pp. 136-145 ◽  
Author(s):  
Lin Duan ◽  
Tong Zhang ◽  
Weihua Song ◽  
Chuanjia Jiang ◽  
Yan Hou ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Graphene Oxide ◽  
Hydroxyl Radicals ◽  
Uv Irradiation ◽  
Nitrate Concentration ◽  
Direct Photolysis ◽  
Water And Wastewater Treatment ◽  
Indirect Photolysis ◽  
Water And Wastewater

As the nitrate concentration increases, the dominant pathway of GO transformation changes from direct photolysis to indirect photolysis enhanced by the production of hydroxyl radicals (˙OH) during UV irradiation of nitrate.

Advanced technologies in water and wastewater treatment

2001 ◽  
Vol 28 (S1) ◽  
pp. 49-66 ◽  
Author(s):  
H Zhou ◽  
Daniel W Smith
Keyword(s):  
Wastewater Treatment ◽  
Uv Irradiation ◽  
Membrane Filtration ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Great Promise ◽  
Water And Wastewater Treatment ◽  
Oxidation Processes ◽  
Advantages And Disadvantages ◽  
Water And Wastewater

The use of conventional water and wastewater treatment processes becomes increasingly challenged with the identification of more and more contaminants, rapid growth of population and industrial activities, and diminishing availability of water resources. Three emerging treatment technologies, including membrane filtration, advanced oxidation processes (AOPs), and UV irradiation, hold great promise to provide alternatives for better protection of public health and the environment and thus are reviewed in this paper. The emphasis was placed on their basic principles, main applications, and new developments. Advantages and disadvantages of these technologies are compared to highlight their current limitations and future research needs. It can be concluded that, along with the growing knowledge and the advances in manufacturing industry, the applications of these technologies will be increased at an unprecedented scale.Key words: water treatment, wastewater treatment, membrane filtration, ozonation, advanced oxidation processes, UV irradiation.

Chemical Water and Wastewater Treatment VIII

2015 ◽  
Vol 4 (0) ◽  
pp. 9781780402840-9781780402840
Author(s):  
H. Hahn ◽  
E. Hoffman ◽  
H. Odegaard
Keyword(s):  
Wastewater Treatment ◽  
Water And Wastewater Treatment ◽  
Water And Wastewater ◽  
Chemical Water

Water and Wastewater Treatment for a Small Island Resort

1989 ◽  
Vol 21 (2) ◽  
pp. 189-193 ◽  
Author(s):  
B. Rigden
Keyword(s):  
Wastewater Treatment ◽  
Reverse Osmosis ◽  
Small Island ◽  
Rotating Biological Contactor ◽  
Water And Wastewater Treatment ◽  
Water And Wastewater ◽  
Operational Data ◽  
Reverse Osmosis Desalination

The design of a reverse osmosis desalination unit and a rotating biological contactor for water and wastewater treatment for a small island resort is described. Some operational data are presented and recommendations for design flows and loadings are made.

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