Abstract
Various reactive oxygen and nitrogen species are accompanied by electrons, ultra-violet (UV) radiation, ions, photons, and electric fields in non-thermal atmospheric pressure plasma. Plasma technology is already used in diverse fields, such as biomedicine, dentistry, agriculture, ozone generation, chemical synthesis, surface treatment, and coating. Non-thermal atmospheric pressure plasma is also considered a promising technology in environmental pollution control. The degradation of organic and inorganic pollutants will be massively advanced by plasma-generated reactive species. Various investigations on the use of non-thermal atmospheric pressure plasma technology for organic wastewater purification have already been performed, and advancements are continuing to be made in this area. This work provides a critical review of the ongoing improvements related to the use of non-thermal plasma in wastewater control and outlines the operational principle, standards, parameters, and boundaries with a special focus on the degradation of organic compounds in wastewater treatment.
Highlights
Water pollution degrades water quality and decreases access to clean water [1,2]
The results showed that non-thermal atmospheric pressure plasma (NTAPP) performs sterilization much more effectively, because the concentrations of reactive oxygen and nitrogen species (RONS) causing sterilization are quite high in NTAPP, and the probability of reaction between Escherichia coli and the plasma-generated RONS increases [50]
This review summarized studies on various applications of plasma in water purification
Summary
Water pollution degrades water quality and decreases access to clean water [1,2]. The term “contamination” generally refers to the entrance of pollutants (e.g., microorganisms and other harmful chemicals) into freshwater resources due to animal and human waste. AOPs are worthy eco-friendly techniques for obtaining freshwater, but setting up the sources, such as UV sources, causes the initial cost to remain a problem To overcome these issues, a cost-friendly, versatile means of OH radical production that has been attracting increasing interest is plasma technology. NTAPPs and their chemical reactions release energy and reactive chemical species that can kill bacteria and microorganisms, resulting in the disinfection of water. The advantage of this technique is that it can be performed in ambient air under atmospheric pressure without a vacuum system. AAlltthhoouugghh sseevveerraallrreevviieewwsshhaavvee bbeeeenn ppuubblliisshheedd oonn wwaatteerr ppuurriiffiiccaattiioonn wwiitthh ppllaassmmaa,, tthheeyyhhaavveemmoostsltylyfofcoucsuesdedonosnusmummamriazriinzgintghethdeiffdeirfefenrtetnytpteyspoefsnoofn-ntohner-mthaelrmplaalsmplaassmanads tahnedir tehffeeirctesfofenctws aotnerwanatdernoannde hnaovneechoavveerecdovalelrtehdesaelltothpeicses. tIotpisicasn. aItpipsraonpraiaptpertoimpreiattoe ptirmeseentot parseyssetnetmaastyicstaenmdautipc -atnod-duatpe-troe-vdiaetwe roefvtiehwe sotfattuhse ostfa, tcuhsaollfe,ncgheaslleanssgoecsiaatsesdocwiaittehd, auwcneoiddnthtfdi,uneatuvuneerddleofdppuermtvoueesrlpneoetppscmrtrsoeesolnpafttesaecrddtesvltaaootnfetcdahedetdovupathslnaeecseuomdsfaenpotolefancnsh-motnhnaoe-tlrtohmegecarihemlnspo.allTlaophsglmiaisesarmse.fvaoTifrehowiwrswaertevaevtareilerupwpautureeirsfviifitachcaluaetitaociotonennsatatinnhnddesosoununmmtthmhmeeaaddrreieizgzgerersasadtdthhaaetetiiaoaovnvnaaoioilflafaobobrlrleggeagagnnuuiiicicddceceoollimimnnepepssoo,,upupnrnrididnnsscciiiipnnpllwewessa,a,sbsbttoeoeuwwunnaaddtteaearrrrititeerrsese,a,aaattmnmnddeennlliittmm.. iittss wwiitthhaanneemmpphhaassiiss
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