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Liquid phase membrane extraction of targeted pesticides from manufacturing wastewaters in a hollow fiber contactor with feed-stream recycles

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posted on 2016-05-26, 14:01 authored by Jelena S. Dordevic, Goran VladisavljevicGoran Vladisavljevic, Tatjana M. Trtic-Petrovic
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 fibers 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.

Funding

We acknowledge the support to this work provided by the Ministry of Education, Science and Technological Development of Serbia through the project No. III 45006.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

Environmental Technology

Citation

DORDEVIC, J., VLADISAVLJEVIC, G.T. and TRTIC-PETROVIC, T., 2016. Liquid phase membrane extraction of targeted pesticides from manufacturing wastewaters in a hollow fiber contactor with feed-stream recycles. Environmental Technology, 38 (1), pp. 78-84.

Publisher

© Taylor & Francis

Version

  • AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

2016-04-29

Publication date

2016-06-02

Notes

This is an Accepted Manuscript of an article published by Taylor & Francis in Environmental Technology on 02 Jun 2016, available online: http://dx.doi.org/10.1080/09593330.2016.1186747

ISSN

1479-487X

Language

  • en

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