Nauka Przyroda Technologie

2008 volume 2 issue 1 #2

Paweł Cyplik, Katarzyna Czaczyk, Agnieszka Piotrowska-Cyplik, Roman Marecik, Włodzimierz Grajek

The influence of resin regeneration on nitrates removal effectivity from drinking water

Summary. The objective of the study was to investigate the capacity of selective resin IONAC SR-7 (Sybron Chemicals Inc., USA) to remove nitrates from drinking water and to optimize the regeneration process, which is based on an estimation of optimum brine concentration and flow rate, which would increase resin regeneration efficiency. Based on the results, 1 dm³ resin can remove 0.7 eq nitrates. Therefore, the determined value of ion-exchange working capability under particular process conditions (12% NaCl solution and a flow rate of 4 BV/h) is 87.5% of the theoretical ion-exchange capability for the examined resin. It was found that as a result of resin partial regen-eration its working sorption capacity decreased to 0.56 meq/ml, which was about 70% of theo-retical resin ion-exchange capacity. This represented a 50% reduction of the volume of environmentally harmful waste after regeneration.

Full text available in English in Adobe Acrobat format:
https://www.npt.up-poznan.net/pub/art_2_2.pdf

Streszczenie w języku polskim:
https://www.npt.up-poznan.net/tom2/zeszyt1/streszczenie-2.html

Corresponding address:
Paweł Cyplik
Paweł Cyplik
Katedra Biotechnologii i Mikrobiologii Żywności
Akademia Rolnicza im. Augusta Cieszkowskiego
ul. Wojska Polskiego 48
60-627 Poznań
Poland
e-mail: pcyplik@wp.pl

Accepted for print: 29.10.2007