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izvor podataka: crosbi

Photolysis of enrofloxacin and removal of its photodegradation products from water by reverse osmosis and nanofiltration membranes (CROSBI ID 192480)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Dolar, Davor ; Košutić, Krešimir ; Periša, Martina ; Babić, Sandra Photolysis of enrofloxacin and removal of its photodegradation products from water by reverse osmosis and nanofiltration membranes // Separation and purification technology, 115 (2013), 1-8. doi: 10.1016/j.seppur.2013.04.042

Podaci o odgovornosti

Dolar, Davor ; Košutić, Krešimir ; Periša, Martina ; Babić, Sandra

engleski

Photolysis of enrofloxacin and removal of its photodegradation products from water by reverse osmosis and nanofiltration membranes

Photolysis in natural aquatic environment might be an important elimination process for the light sensitive antibiotics, such as fluoroquinolones. Photolytic degradation of antibiotics present in wastewaters and natural aquifers can result in generation of new products that may be even more toxic than the parent compound. Therefore, it is important to identify these products and to remove them before entering, for example, drinking water sources, whereby the role of membrane processes is irreplaceable. In this study photodegradation of enrofloxacin (ENRO) in aquatic media was performed at two different pH values, 4 and 8. Four and three photodegradation products (PDPs) with different molecular weight were identified at pH 4 and 8, respectively. All of them, together with the enrofloxacin as the parent compound were removed almost completely (>99%) by reverse osmosis (RO) and tight nanofiltration (NF) membranes, while by loose NF membranes >92%, except for the smallest PDP with HL membrane (37%) at pH 8. The minimum amount of the compounds in the permeate is the proof that most of the selected RO/NF membranes make an effective barrier for them. The size exclusion was the main rejection mechanism, while the physico-chemical interactions and electrostatic repulsion/attraction probably had influence on the overall rejection by loose NF membranes for the smaller photodegradation products of ENRO.

enrofloxacin ; photolysis ; photodegradation products ; removal by RO/NF membranes

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Podaci o izdanju

115

2013.

1-8

objavljeno

1383-5866

1873-3794

10.1016/j.seppur.2013.04.042

Povezanost rada

Interdisciplinarne tehničke znanosti, Kemija, Kemijsko inženjerstvo, Temeljne tehničke znanosti

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