Ultrafiltration of nitrate and heavy metal ions uslng cellulosic membranes

Authors

  • Ernesto J. del Rosario Institute of Chemistry, University of the Philippines, Los Baños, Laguna
  • Anna May del Valle Institute of Chemistry, University of the Philippines, Los Baños, Laguna
  • Alma Loreli M. de Jesus Institute of Chemistry, University of the Philippines, Los Baños, Laguna
  • Erwin M. Garcia Institute of Chemistry, University of the Philippines, Los Baños, Laguna

DOI:

https://doi.org/10.26534/kimika.v18i2.29-32

Keywords:

ultrafiltration, cellulosics membranes, nitrate removal, heavy metals

Abstract

Ultrafiltration membranes were prepared from cellulose acetate (CA) and N,N-dimethylformamide (DMF) (25:100 w/v) and their permselectivity characteristics were determined. The membranes were used for the separation of NO3-, Pb2+, Cd2+, Zn2+ and Hg2+ using micellar-enhanced ultrafiltration (MEUF). MEUF-based separation of nitrate and heavy metal ions was studied in order to assess the potential of MEUF for remediation of polluted wastewater. Solute rejection coefficient (s values) of nitrate increased from less than 34% in the absence of the cationic surfactant cetylpyridinium chloride (CPC) to more than 88% at CPC concentration above the cmc. For Pb2+ and Cd2+, s values increased from less than 10% in the absence of the anionic surfactant sodium dodecylsulfate (SDS) to greater than 80% and 90%, respectively, at SDS concentration above the critical micelle concentration (cmc). Solute rejection increased from 13% and 28% for Zn2+ and Hg2+, respectively, to more than 85% after MEUF in the presence of 0.001 M SDS.

Downloads

How to Cite

del Rosario, E. J., del Valle, A. M., de Jesus, A. L. M., & Garcia, E. M. (2002). Ultrafiltration of nitrate and heavy metal ions uslng cellulosic membranes. KIMIKA, 18(2), 29–32. https://doi.org/10.26534/kimika.v18i2.29-32

Issue

Vol. 18 No. 2 (2002)

Section

Research Articles

License

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).