Comparative study of humic acids flocculation with chitosan hydrochloride and chitosan glutamate

Water Research
Svetlana BratskayaDenis Chervonetsky

Abstract

Flocculation of dissolved humic acids (HA) and their complexes with metal ions and organic pollutants is a crucial step in drinking water preparation due to significant undesirable effects of humic compounds on water quality. Constant demand for cheap, effective and environmentally friendly flocculants brings about the interest to natural cationic polymers which can be used to neutralize negative charge of humic colloids through polyelectrolyte complexes (PEC) formation. In this work, the interaction of HA with two types of soluble chitosan salts (hydrochloride and glutamate) at different pH and polymer ratios was studied with a focus on electrical charge of PEC formed and effectiveness of color removal in the flocculation process. For both chitosan forms flocculation window was found at pH close to the PEC isoelectric point (pI) in a wide concentration range; however, lower flocculant dose was required when chitosan glutamate was used.

Citations

May 27, 2009·Journal of Environmental Management·Agata SzygułaAna Maria Sastre
Oct 4, 2015·International Journal of Biological Macromolecules·Kunpeng HeWenhua Zhao
Sep 25, 2007·Bioresource Technology·Jian-Ping WangHan-Qing Yu
Aug 27, 2014·Journal of Food Science·F Fernández-MartínM Fernández-García
Jul 30, 2016·International Journal of Biological Macromolecules·Danfeng WangYumin Zhang
Jul 9, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Inara Oliveira do Carmo NascimentoLuciano Matos Queiroz
Feb 21, 2006·Physical Review Letters·Zhidong Li, Jianzhong Wu
Aug 23, 2007·Water Environment Research : a Research Publication of the Water Environment Federation·Sittpong LertsittichaiChantaraporn Phalakornkule
Jul 12, 2017·Environmental Monitoring and Assessment·Afshin EbrahimiMohammad Hassan Rabie Rad
Jul 22, 2018·Water Research·Hua WeiHu Yang
Sep 2, 2019·The Science of the Total Environment·Dongdong GeNanwen Zhu

❮ 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.