The ionic strength effect on microcystin and natural organic matter surrogate adsorption onto PAC

Journal of Colloid and Interface Science
Margarida Campinas, Maria João Rosa

Abstract

This work aims to contribute to a better understanding of the ionic strength effect on microcystin and natural organic matter (NOM) surrogate adsorption by analyzing the importance of adsorbate molecular size, and surface concentration. Adsorption kinetics and/or isotherms were performed on PAC Norit SA-UF for four microcystin variants (MC-LR, MC-LY, MC-LW, MC-LF), and three NOM surrogates (salicylic acid (SA), tannic acid (TA), Aldrich humic acid (AHA)) at different solution ionic strengths. Results showed that the ionic strength effect depends upon the adsorbate surface concentration, cation charge (mono or divalent), and adsorbate molecular size. Potassium seemed not to affect the MC-LR adsorption, while calcium enhanced MC-LR kinetics and adsorption capacity. K+ and, particularly, Ca2+ improved the adsorption kinetics of the other microcystin variants. For identical surface concentration and ionic strength, the impact of K+ and Ca2+ on NOM surrogates depended on the adsorbate molecular size: K+ effect was only observed for AHA, whereas Ca2+ caused no effect on SA adsorption, slightly enhanced TA adsorption, and greatly enhanced AHA adsorption. MC-LR isotherms with two salt concentrations (KCl or CaCl2) indicated that, for t...Continue Reading

References

Feb 4, 1999·Journal of Colloid and Interface Science·M BjelopavlicR Hayes
May 2, 2001·Journal of Chromatography. a·L A Lawton, C Edwards
Jul 12, 2001·Journal of Colloid and Interface Science·Phillip PendletonShiaw Hui Wong

❮ Previous
Next ❯

Citations

Dec 31, 2011·Environmental Science and Pollution Research International·Reddithota J KrupadamRajasekhar Balasubramanian
Oct 23, 2013·Journal of Colloid and Interface Science·Ganggang ChangQilong Ren
Jul 19, 2013·Journal of Agricultural and Food Chemistry·Yuanyuan ZhaoYuansheng Pei
Jun 19, 2013·Journal of Colloid and Interface Science·Yan ZhangGui-bai Li
Oct 30, 2007·Chemosphere·Anna ToruńskaHanna Mazur-Marzec
Aug 12, 2014·The Science of the Total Environment·Seyed Mohammad MajediHian Kee Lee
Jul 25, 2013·Water Research·Margarida CampinasMaria João Rosa
Jul 31, 2013·Environment International·Sylvain MerelOlivier Thomas
Jul 20, 2016·Journal of Colloid and Interface Science·Amy L PochodyloLudmilla Aristilde
Jul 1, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Shi-Chuan WuJian-Hua Cheng
Aug 8, 2021·The Science of the Total Environment·Martin PivokonskyLenka Pivokonska
Oct 12, 2021·The Science of the Total Environment·Ziming ZhaoMadhumita B Ray

❮ Previous
Next ❯

Related Concepts

Related Feeds

Blood Clotting Disorders

Thrombophilia includes conditions with increased tendency for excessive blood clotting. Blood clotting occurs when the body has insufficient amounts of specialized proteins that make blood clot and stop bleeding. Here is the latest research on blood clotting disorders.