The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	Role of zeta potential in micro-carrier process
Author:	Mehta, Pallavi
View Online:	njit-etd1999-080 (xii, 104 pages ~ 5.1 MB pdf)
Department:	Department of Chemical Engineering, Chemistry and Environmental Science
Degree:	Master of Science
Program:	Applied Chemistry
Document Type:	Thesis
Advisory Committee:	Ding, Yuan (Committee chair) Dresnack, Robert (Committee member) Kristol, David S. (Committee member) Kebbekus, Barbara B. (Committee member)
Date:	1999-01
Keywords:	Water pollution. Sewage --Purification. Zeta potential. Colloids --Electric properties.
Availability:	Unrestricted
Abstract:	The micro-carrier process recently developed at NJIT is a new high rate settling technology for water and wastewater treatment. This process utilizes the micro-cater as a flocculating enhancement agent to achieve rapid removal of colloidal particles. This thesis consist of two parts, namely, 1) A review of the flocculation process utilized in water and wastewater treatment, and 2) An experimental program to evaluate the role of zeta potential in the flocculation process. The results of this study indicated that the DLVO theory (Darjaguin, Landau, Overbeek, Verwey theory) is applicable to micro-cater process in the absence of polyelectrolytes. The best flocculation was achieved when the zeta potential approached the minimum value. It was observed that in the presence of different polyelectrolytes non-DLVO forces have a significant impact.