Univerzita Pardubice Fakulta chemicko- technologická

Univerzita Pardubice

Zaměstnanci
|
Studenti
English

Publikace detail

Separation of chlorinated biocides from aqueous effluents using ionic liquids

Autoři: Weidlich Tomáš | Štěpánková Michaela

Rok: 2016

Druh publikace: ostatní - přednáška nebo poster

Strana od-do: nestránkováno

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
eng	Separation of chlorinated biocides from aqueous effluents using ionic liquids	3,6-Dichloro-2-pyridinecarboxylic acid (Clopyralid) is selective herbicide widely used for control of broadleaf weeds. 2-(4-Chlorophenoxy)-2-methylpropanoic acid (Clofibric acid) is used as plant growth regulator, moreover, it is a metabolite of the cholesterol-lowering pharmaceutical drug Clofibrate. Both these mentioned acids are quite water soluble and persistent compounds. Their concentration can be evaluated for example using AOX (adsorbable organic halides) parameter. In this work adsorption using charcoal as standard technique was tested for removal of both mentioned biocides and it was compared with the new method based on precipitation of acidic biocides caused by addition of suitable ionic liquid [1-3]. The new technique based on application of ionic liquids as liquid ion exchangers was successfully tested for facile removal of Clopyralid and Clofibric acid in quite broad pH range from model wastewater streams. The attempts for recycling of used ionic liquids from isolated organic phase were performed. It was proved that hydrophobic ionic liquids (for example Aliquat 336) are the most effective precipitation agents for the facile removal of low concentrations of studied biocides from contaminated water.	clopyralid; clofibric acid; picloram