Graphene and its Composite Materials for Water Decontamination

2020 ◽  
Vol 3 (1) ◽  
pp. 41-48
Author(s):  
Manas Roy ◽  
Mitali Saha
Keyword(s):  
Wastewater Treatment ◽  
Composite Materials ◽  
Water Treatment ◽  
Mechanical Strength ◽  
Photocatalytic Oxidation ◽  
Clean Water ◽  
Water Deficiency ◽  
Water Decontamination ◽  
Sustainable Environment ◽  
Treatment Technologies

Acute water cataclysm on account of eco-noxious anthropogenic exploitation caused massive setbacks on the global prerequisite of clean water. Subsequently, with the purpose of circumventing the worldwide unpolluted water deficiency, wastewater treatment technologies have received extraordinary precedence to disinfect water for a sustainable environment. Presently, diverse, efficient materials are being used to remove organic/ inorganic noxious substances from wastewater, among which graphene and its composites have received remarkable attention for water decontamination technology by virtue of their substantial surface area, mechanical strength, mesoporosity, nanosheet arrangement and outstanding absorption proficiency for the contaminant. The present review accentuates the contemporary progresses in the implementation of graphene along with its composite as a potential adsorbent for the exclusion of pernicious inorganic mixture of miscellaneous pollutants, as photocatalysts for the breakdown of venomous organic toxins by employing photocatalytic oxidation. The prospect of graphene and its nanocomposites towards comprehensive water treatment approaches has been discussed.

Preparation and Application of Polymer-Metal Oxide Nanocomposites in Wastewater Treatment

2020 ◽  
pp. 83-102
Author(s):  
Victor Odhiambo Shikuku ◽  
Wilfrida N. Nyairo
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Metal Oxides ◽  
Low Cost ◽  
Drinking Water Treatment ◽  
Synthesis Methods ◽  
Operational Conditions ◽  
Polymer Metal ◽  
Treatment Technologies ◽  
Sustainable Wastewater Treatment

The search for efficient and sustainable wastewater treatment technologies is a subject of continuing research. This is due to the emergence of new classes of water contaminants that are recalcitrant to the conventional wastewater treatment technologies and the stringent allowable limits for contaminant levels set by environmental management authorities. The chapter discusses the developments in synthesis methods and application of polymer-metal oxides as emerging facile materials for wastewater treatment. The varying uses of polymer-metal oxides for different processes in water treatment under varying operational conditions and their performance for different pollutants are critically analyzed. Their strengths and inherent limitations are also highlighted. The chapter demonstrates that polymer-metal oxides are facile low-cost and efficient materials and can be integrated in wastewater and drinking water treatment systems.

A Critical Analysis of MIEX Application in Water Treatment

2013 ◽  
Vol 777 ◽  
pp. 86-91 ◽  
Author(s):  
Ji Bai Wang ◽  
Ming Liang Ni
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Critical Analysis ◽  
Potable Water ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Treatment Technologies ◽  
Magnetic Ion ◽  
Engineering Projects ◽  
Potable Water Treatment

A novel magnetic ion exchange resin called MIEX Resin is being utilized in potable water treatment, which indicates significant advantages. The objective of this article is to analyze characteristics and application of MIEX Resin in engineering projects, and hence provide critical review on merits and demerits of the resin. Furthermore, researches on combination of MIEX Resin with other water treatment technologies would be analyzed and discussed to prove potential that a MIEX Resin process integrated with other treatments can be employed in broader fields of wastewater treatment and reuse.

scholarly journals Photocatalytic Oxidation of Natural Organic Matter in Water

Water ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 288
Author(s):  
Dan C. A. Gowland ◽  
Neil Robertson ◽  
Efthalia Chatzisymeon
Keyword(s):  
Drinking Water ◽  
Organic Matter ◽  
Water Treatment ◽  
Natural Organic Matter ◽  
Photocatalytic Oxidation ◽  
Municipal Wastewater ◽  
Complex Mixture ◽  
Chemical Properties ◽  
Water Supplies ◽  
Treatment Technologies

Increased concentrations of natural organic matter (NOM), a complex mixture of organic substances found in most surface waters, have recently emerged as a substantial environmental issue. NOM has a significant variety of molecular and chemical properties, which in combination with its varying concentrations both geographically and seasonally, introduce the opportunity for an array of interactions with the environment. Due to an observable increase in amounts of NOM in water treatment supply sources, an improved effort to remove naturally-occurring organics from drinking water supplies, as well as from municipal wastewater effluents, is required to continue the development of highly efficient and versatile water treatment technologies. Photocatalysis has received increasing interest from around the world, especially during the last decade, as several investigated processes have been regularly reported to be amongst the best performing water treatment technologies to remove NOM from drinking water supplies and mitigate the formation of disinfection by products. Consequently, this overview highlights recent research and developments on the application of photocatalysis to degrade NOM by means of TiO2-based heterogeneous and homogeneous photocatalysts. Analytical techniques to quantify NOM in water and hybrid photocatalytic processes are also reviewed and discussed.

Preparation and Application of Polymer-Metal Oxide Nanocomposites in Wastewater Treatment

2021 ◽  
pp. 393-407
Author(s):  
Victor Odhiambo Shikuku ◽  
Wilfrida N. Nyairo
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Metal Oxides ◽  
Low Cost ◽  
Drinking Water Treatment ◽  
Synthesis Methods ◽  
Operational Conditions ◽  
Polymer Metal ◽  
Treatment Technologies ◽  
Sustainable Wastewater Treatment

The search for efficient and sustainable wastewater treatment technologies is a subject of continuing research. This is due to the emergence of new classes of water contaminants that are recalcitrant to the conventional wastewater treatment technologies and the stringent allowable limits for contaminant levels set by environmental management authorities. The chapter discusses the developments in synthesis methods and application of polymer-metal oxides as emerging facile materials for wastewater treatment. The varying uses of polymer-metal oxides for different processes in water treatment under varying operational conditions and their performance for different pollutants are critically analyzed. Their strengths and inherent limitations are also highlighted. The chapter demonstrates that polymer-metal oxides are facile low-cost and efficient materials and can be integrated in wastewater and drinking water treatment systems.

scholarly journals Application of Ceramic Membrane in Water and Wastewater Treatment

2018 ◽  
Vol 53 ◽  
pp. 04032 ◽  
Author(s):  
Feng LIN ◽  
Shoubin ZHANG ◽  
Guoqiang MA ◽  
Liping QIU ◽  
Huajun SUN
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Ceramic Membrane ◽  
Ceramic Membranes ◽  
Membrane Technology ◽  
Water And Wastewater Treatment ◽  
Treatment Technologies ◽  
Water And Wastewater ◽  
Development Prospects

In recent years, ceramic membranes have been widely used in the field of water and wastewater treatment by virtue of their advantages over conventional water treatment technologies. In this article, definition, classification and characteristics of ceramic membrane were introduced firstly. And then the application of ceramic membrane technology used in various fields of water and wastewater treatment was highlighted. Finally, several opinions on the development prospects of ceramic membrane technology were raised.

MASALAH DAN ALTERNATIF TEKNOLOGI PENGOLAHAN AIR UNTUK MASYARAKAT MISKIN KOTA

2018 ◽  
Vol 6 (3) ◽  
Author(s):  
Arie Herlambang
Keyword(s):  
Water Treatment ◽  
Ground Water ◽  
Potable Water ◽  
Diarrheal Disease ◽  
Low Cost ◽  
Clean Water ◽  
Treatment Technology ◽  
Alternative Technologies ◽  
The Poor ◽  
Daily Water

Clean water to poor communities who live in crowded municipal area is stillexpensive and a luxury. This condition is evidenced by the number of people whouse ground water for their daily water, because water taps still seems expensivefor them. Diarrheal disease is still relatively high for Indonesia, where nearly 16thousand people suffer from diarrhea due to poor sanitation. To help the poor inthe city, there are several alternative technologies that can be applied to publicaccess to clean water and adequate low-cost, including ground water treatmenttechnology with a filter system equipped with an ultraviolet sterilizer, or ozonegenerators, or using ultrafiltration, if possible can also use the reverse osmosismembrane that for fresh water. Arsinum is the best alternative should be chosenfor fulfilled potable water in slump area.Keywords : Sanitation, water treatment technology, portable water, low-cost, slump area

Review of Wastewater Treatment Technologies for Application in Communities in the Amazonian Varzea

2011 ◽  
Vol 7 (1) ◽  
pp. 59-69 ◽  
Author(s):  
João Paulo Borges Pedro ◽  
Maria Cecília Rosinski Lima Gomes ◽  
Ana Claudeíse Silva do Nascimento
Keyword(s):  
Wastewater Treatment ◽  
Treatment Technologies

Use of chemical upgrading (CU) in Hungary and Slovakia

1994 ◽  
Vol 30 (5) ◽  
pp. 87-95 ◽  
Author(s):  
Susan E. Murcott ◽  
Donald R. F. Harleman
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Treatment Plant ◽  
Domestic Sewage ◽  
Metal Salts ◽  
Plant Performance ◽  
Eastern European ◽  
Low Doses ◽  
The Past ◽  
Treatment Technologies

In the past decade, the development of polymers and new chemical technologies has opened the way to using low doses of chemicals in wastewater treatment. “Chemical upgrading” (CU) is defined in this paper as an application of these chemical technologies to upgrade overloaded treatment systems (typically consisting of conventional primary plus biological treatment) in Central and Eastern European (CEE) countries. Although some of the chemical treatment technologies are proven ones in North America, Scandinavia, and Germany, a host of factors, for example, the variations in composition and degree of pollution, the type of technologies in use, the type and mix of industrial and domestic sewage, and the amount of surface water, had meant that the viability of using CU in CEE countries was unknown. This report describes the first jar tests of CU conducted during the summer of 1993. The experiments show CU's ability to improve wastewater treatment plant performance and to potentially assist in the significant problem of overloaded treatment plants. Increased removal of BOD, TSS, and P in the primary stage of treatment is obtained at overflow rates above 1.5 m/h, using reasonably priced, local sources of metal salts in concentrations of 25 to 50 mg/l without polymers.

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