Open AccessDESIGN OF THE REGENERATION METHOD OF HYDROXYL-CONTAINING ZIRCONIUM COMPOUNDS IN PROCESSES OF WATER PURIFICATION FROM BORON
Author(s) -
David Urbanas,
Liudmyla Melnyk
Publication year - 2017
Language(s) - English
Resource type - Conference proceedings
DOI - 10.3846/aainz.2017.020
Subject(s) - boron , sorbent , zirconium , nanofiltration , ammonium hydroxide , sorption , chemistry , inorganic chemistry , ammonium , membrane , salt (chemistry) , partition coefficient , chemical engineering , materials science , nuclear chemistry , chromatography , adsorption , organic chemistry , biochemistry , engineering
The regeneration method of zirconium hydroxide sorbent spent in the boron sorption process by diluted solutionof acids as well as the principle recycling diagram of the formed regenerating solution by the nanofiltration processwith the OPMN-P membrane were proposedin this work. The permeate obtained can be used as a boron-containing microfertilizer(ammonium salt + boron) after it has been neutralised with ammonium hydroxide. Zirconium-containingconcentrate may be reused for sorbent preparation. The effectiveness of separation of the regenerating solution componentsby nanofiltration is demonstrated by high values of zirconium rejection coefficient in this process (RZr ~98– 99%)and low values of boron rejection coefficient (RB ~12%). In this case the specific performance of the membrane is about50 dm3/m2·h.