Version 1
: Received: 31 December 2020 / Approved: 31 December 2020 / Online: 31 December 2020 (13:45:51 CET)
How to cite:
Khaless, K.; Achiou, B.; Boulif, R.; Benhida, R. Recycling of Spent Reverse Osmosis Membranes for the Second Use in Clarification of Wet-Process Phosphoric Acid. Preprints2020, 2020120815. https://doi.org/10.20944/preprints202012.0815.v1
Khaless, K.; Achiou, B.; Boulif, R.; Benhida, R. Recycling of Spent Reverse Osmosis Membranes for the Second Use in Clarification of Wet-Process Phosphoric Acid. Preprints 2020, 2020120815. https://doi.org/10.20944/preprints202012.0815.v1
Khaless, K.; Achiou, B.; Boulif, R.; Benhida, R. Recycling of Spent Reverse Osmosis Membranes for the Second Use in Clarification of Wet-Process Phosphoric Acid. Preprints2020, 2020120815. https://doi.org/10.20944/preprints202012.0815.v1
APA Style
Khaless, K., Achiou, B., Boulif, R., & Benhida, R. (2020). Recycling of Spent Reverse Osmosis Membranes for the Second Use in Clarification of Wet-Process Phosphoric Acid. Preprints. https://doi.org/10.20944/preprints202012.0815.v1
Chicago/Turabian Style
Khaless, K., Rachid Boulif and Rachid Benhida. 2020 "Recycling of Spent Reverse Osmosis Membranes for the Second Use in Clarification of Wet-Process Phosphoric Acid" Preprints. https://doi.org/10.20944/preprints202012.0815.v1
Abstract
Various techniques have been used to “clean-up” industrial phosphoric acid: precipitation, flotation, activated charcoal or clay treatment. To address membrane processes potential in phosphoric acid clarification process, this study explores the advantage of membrane techniques as new route for phosphoric acid clarification in an eco-efficient way through the use of “regenerated spent membrane”. Regeneration of the spent membranes was performed on of 0.15 m2 active area regeneration. These membrane samples were used to study the phosphoric acid clarification at a laboratory scale. They were immersed in an oxidizer for at most seven days. The samples were characterized systematically before immersion in an oxidant media. In this study, the potential to regenerate spent membranes and application of this media to clarify the 29% P2O5 phosphoric acid was demonstrated. This study shows, by tests that the reverse osmosis (RO) membranes achieve an abatement of 70% and 65% for solids and organic materials, respectively. These positive results will pave the way for implementing these membranes phosphoric acid treatment process. Moreover, besides being economically advantageous, the use of the spent membrane is likely an environmentally friendly route (no waste, no organic solvent and effluent to be regenerated later on).
Keywords
Membrane Chemical Regeneration; Phosphoric Acid; Clarification
Subject
Chemistry and Materials Science, Analytical Chemistry
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
