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Studies regarding the benzene, toluene and o-xylene removal from waste water [articol]

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dc.contributor.author Negrea, Petru
dc.contributor.author Sidea, F.
dc.contributor.author Negrea, Adina
dc.contributor.author Lupa, Lavinia Afrodita
dc.contributor.author Ciopec, Elvira-Mihaela
dc.contributor.author Muntean, Cornelia
dc.date.accessioned 2020-04-30T07:32:16Z
dc.date.accessioned 2021-03-01T08:52:48Z
dc.date.available 2020-04-30T07:32:16Z
dc.date.available 2021-03-01T08:52:48Z
dc.date.issued 2008
dc.identifier.citation Negrea, Petru. Studies regarding the benzene, toluene and o-xylene removal from waste water . Timişoara: Editura Politehnica, 2008 en_US
dc.identifier.uri http://primo.upt.ro:1701/primo-explore/search?query=any,contains,Studies%20regarding%20the%20benzene,%20toluene%20and%20o-xylene%20removal%20from%20waste%20water&tab=default_tab&search_scope=40TUT&vid=40TUT_V1&lang=ro_RO&offset=0 Link Primo
dc.description.abstract The consequences of pollution are more and more present, and are reflected especially in the public health, in the bio-diversity and balance of the ecosystems, by putting them in danger. Volatile organic compound (VOC) is defined as any organic compound of artificial origin, other than methane, able to generate photochemical oxidants in reaction with nitrogen oxides and in the presence of solar radiation. In the present paper, were studied the possibilities of benzene, toluene and xylene (BTX) removal from waste waters by air-stripping and adsorption on active charcoal. It was also investigated the possibility of using UV-VIS spectrophotometry as analysis method for BTX. We found that benzene, toluene and o-xylene dissolved in aqueous solutions can be analyzed by UV-VIS spectrophotometry; they present a very good absorbance in the wave length range 200-220 nm (benzene 190-212 nm). The BTX removal by air-stripping was studied for various air flow rates (20, 40 and 100 L/h). BTX removal degree increases with the increase of air flow rate; for all flow rates the removal degrees were higher than 96%. The removal of BTX from waste water by adsorption on active charcoal was studied using a column containing 4 g of granular active charcoal. The efficiency of the adsorption process was studied for three various water flow rates: 1 L at a flow rate of 0.26 L/h, 5 L at 1.66 L/h and 5 L at 3.65 L/h. BTX removal degree decreases as the waste water flow rate increases, and they are smaller than the removal degrees reached by air-stripping, due to the quantity, the sort of the used charcoal (granular), and the design of the adsorption column, which allowed the formation of preferential flow channels, especially at higher flow rates. en_US
dc.language.iso en en_US
dc.publisher Timişoara: Editura Politehnica en_US
dc.relation.ispartofseries Buletinul ştiinţific al Universităţii „Politehnica” din Timişoara, România. Seria chimie şi ingineria mediului, Tom 53(67), fasc. 1-2 (2008), p. 144-146
dc.subject Protecţia mediului en_US
dc.subject Ape uzate en_US
dc.subject Articol en_US
dc.subject Volatile organic compound en_US
dc.subject Waste water en_US
dc.subject Benzene en_US
dc.subject Toluene and o-xylene removal en_US
dc.subject Air-stripping en_US
dc.subject Adsorption on active charcoal en_US
dc.title Studies regarding the benzene, toluene and o-xylene removal from waste water [articol] en_US
dc.type Article en_US

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