%0 Journal Article %A Đorđević, Jelena %A Vladisavljević, Goran T. %A Trtić-Petrović, Tatjana %D 2016 %T Liquid-phase membrane extraction of targeted pesticides from manufacturing wastewaters in a hollow fibre contactor with feed-stream recycle %U https://tandf.figshare.com/articles/journal_contribution/Liquid_phase_membrane_extraction_of_targeted_pesticides_from_manufacturing_wastewaters_in_a_hollow_fiber_contactor_with_feed_stream_recycles/3362854 %R 10.6084/m9.figshare.3362854.v2 %2 https://tandf.figshare.com/ndownloader/files/5202739 %K Hollow fibre membrane contactor %K liquid membrane %K mass transfer resistance %K pesticides %K wastewater %X

A two-phase membrane extraction in a hollow fibre contactor with feed-stream recycle was applied to remove selected pesticides (tebufenozide, linuron, imidacloprid, acetamiprid and dimethoate) from their mixed aqueous solutions. The contactor consisted of 50 polypropylene hollow fibres impregnated with 5% tri-n-octylphosphine oxide in di-n-hexyl ether. For low-polar pesticides with log P ≥ 2 (tebufenozide and linuron), the maximum removal efficiency increased linearly from 85% to 96% with increasing the feed flow rate. The maximum removal efficiencies of more polar pesticides were significantly higher under feed recirculation (86%) than in a continuous single-pass operation (30%). It was found from the Wilson’s plot that the mass transfer resistance of the liquid membrane can be neglected for low-polar pesticides. The pesticide removals from commercial formulations were similar to those from pure pesticide solutions, indicating that built-in adjuvants did not affect the extraction process.

%I Taylor & Francis