scholarly journals Membrane process and Graphene nano-particles in Water treatment

The suspended and dissolved particles presented in the water and wastewater in the size of 1-1000 nm which is more toxic and it causes severe effects to the aquatic life and living organisms. Nanotechnology is the method, which is newly developed in this world, to remove the very tiny particles presents in the water as well as wastewater with the help of nano-particles. Many nano-particles were used to remove the toxic contents presented in water and wastewater such as heavy metal concentration, dyes and some of the virus and bacteria etc. Compared to various nano-materials, Graphene is the type of smart material which is derived from the graphite, most widely used in all industrial sectors for various purposes. This review paper discussed about the importance of graphene usage in water and wastewater treatment technologies in recent days.

Water ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 45 ◽  
Author(s):  
Anastasios Zouboulis ◽  
Ioannis Katsoyiannis

The present Special Issue brought together recent research findings from renowned scientists in this field and assembled contributions on advanced technologies that have been applied to the treatment of wastewater and drinking water, with an emphasis on novel membrane treatment technologies. The 12 research contributions highlight various processes and technologies that can achieve the effective treatment and purification of wastewater and drinking water, aiming (occasionally) for water reuse. The published papers can be classified into three major categories. (a) First, there are those that investigate the application of membrane treatment processes, either directly or in hybrid processes. The role of organic matter presence and fouling control is the main aim of the research in some of these studies. (b) Second, there are studies that investigate the application of adsorptive processes for the removal of contaminants from waters, such as arsenic, antimony, or chromate, with the aim of the efficient removal of the toxic contaminants from water or wastewater. (c) Lastly, there are studies that include novel aspects of oxidative treatment such as bubbleless ozonation.


2019 ◽  
Vol 251 ◽  
pp. 109524 ◽  
Author(s):  
Mekdimu Mezemir Damtie ◽  
Yun Chul Woo ◽  
Bongchul Kim ◽  
Ruth Habte Hailemariam ◽  
Kwang-Duck Park ◽  
...  

2021 ◽  
Vol 12 (3) ◽  
pp. 3407-3428

Microplastic pollutants are increasingly posing a significant threat of aquatic contamination and causing various adverse effects on the aquatic environment as well as human health. Microplastics are hazardous chemicals to marine and freshwater ecosystems; therefore, it is becoming a severe concern for ecology. Microplastics can also expose via drinking water and can be vulnerable to all living organisms. Microplastics work as carriers for various toxic components such as additives and other hazardous substances from industrial and urbanized areas. These microplastic contaminated effluents are ultimately transferred into water systems and directly ingested by organisms associated with a particular ecosystem. The microplastics components also pose an indirect threat to aquatic ecosystems by adsorbing surrounding other water pollutants. Due to the luxuriant discharge of billion tons of plastic waste from domestic to industrial level every year, degraded microplastics get accumulated in various aquatic systems, contaminate, and introduce into the food chain. This review mainly focuses on occurrence, factors influencing the release of microplastics into aquatic ecosystems, possible impact of these toxic micro-sized particles on human health and aquatic life. This study also briefly discusses removing microplastics from effluent and water systems using different advanced final-stage treatment technologies.


2000 ◽  
Vol 42 (12) ◽  
pp. 61-64 ◽  
Author(s):  
E.H. Bryan

Research aimed at solving important environmental problems at all scales ranging from global to individual will continue to be an essential part of the process by which sustainability of life on earth may be achieved. Solutions to environmental problems that relate to water are especially critical to this process and are likely to involve use of innovative technologies that emerge from research with sufficient promise to justify their development, a process that evaluates them at a scale that will yield engineering design parameters and confidence in their technical performance and economic value. Privatization of water and wastewater systems and mergers of equipment manufacturers may provide the economic bases needed for development of innovative water and wastewater treatment technologies in the 21st Century that have emerged from research in the 19th and 20th Centuries but have not as yet been fully developed or adopted.


2021 ◽  
Vol 11 (5) ◽  
pp. 2063
Author(s):  
Ioannis A. Katsoyiannis ◽  
Vincenzo Torretta

The present special issue collected articles that address the very important topic of innovative approaches in water and wastewater treatment technologies. Thirteen articles are published, ten research paper and three review articles. The papers can be divided in four major categories, namely, membrane treatment, adsorption studies, advanced oxidation processes and wastewater treatment optimization. In the editorial, a brief description of the findings of each paper is presented along with a critical assessment.


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