Menu
Search
Filters
Close
Menu

Save 20% on select titles with code HIDDEN24 - Shop The Sale Now

07057 STRUVITE SCALE FORMATION AND INHIBITION IN WASTEWATER

Picture for 07057 STRUVITE SCALE FORMATION AND INHIBITION IN WASTEWATER
Available for download
Product Number: 51300-07057-SG
ISBN: 07057 2007 CP
Author: Petros G. Koutsoukos and Aikaterini N. Kofina
Publication Date: 2007
Industry: Water/Wastewater
$0.00
$20.00
$20.00
The formation of struvite scale formation was investigated in synthetic wastewater, 25°C, pH 8.50 both in the absence and in the presence of heavy metals cadmium(Cd), copper (Cu) and lead (Pb). The concentrations of the tested metals was in the range between 1-10 µM to avoid metal hydroxide precipitation. The investigation was done at conditions of constant supersaturation. Synthetic wastewater, aqueous solutions with composition similar to typical municipal wastewater was used as a matrix for the preparation of the supersaturated solutions. The kinetics of struvite precipitation was affected by the presence of the metal ions tested at concentrations as low as 1 µM. The presence of cadmium resulted in narrower stability domain for the struvite system, while increasing concentrations in solution resulted in shorter induction times. The rates of precipitation were also faster up to 5µM, past which they started reducing. The presence of copper resulted in acceleration at low concentrations (1 µM) and inhibition at higher concentrations (>4 µM). The presence of lead showed a more consistent behavior, resulting in increasingly longer induction times and lower rates of precipitation with increasing metal concentration. It should be noted that all three metals investigated were taken up by the solid either by electrostatic interactions or by other mechanisms (e.g., surface complexation or surface precipitation). The morphology was not affected by the presence of the metals examined.
The formation of struvite scale formation was investigated in synthetic wastewater, 25°C, pH 8.50 both in the absence and in the presence of heavy metals cadmium(Cd), copper (Cu) and lead (Pb). The concentrations of the tested metals was in the range between 1-10 µM to avoid metal hydroxide precipitation. The investigation was done at conditions of constant supersaturation. Synthetic wastewater, aqueous solutions with composition similar to typical municipal wastewater was used as a matrix for the preparation of the supersaturated solutions. The kinetics of struvite precipitation was affected by the presence of the metal ions tested at concentrations as low as 1 µM. The presence of cadmium resulted in narrower stability domain for the struvite system, while increasing concentrations in solution resulted in shorter induction times. The rates of precipitation were also faster up to 5µM, past which they started reducing. The presence of copper resulted in acceleration at low concentrations (1 µM) and inhibition at higher concentrations (>4 µM). The presence of lead showed a more consistent behavior, resulting in increasingly longer induction times and lower rates of precipitation with increasing metal concentration. It should be noted that all three metals investigated were taken up by the solid either by electrostatic interactions or by other mechanisms (e.g., surface complexation or surface precipitation). The morphology was not affected by the presence of the metals examined.
Product tags
Also Purchased
Picture for 03060 HYDROGEN SULFIDE AND MICROBIOLOGICALLY
Available for download

03060 HYDROGEN SULFIDE AND MICROBIOLOGICALLY INFLUENCED CORROSION OF CONCRETE, STEEL AND DUCTILE IRON IN WASTE WATER FACILITIES

Product Number: 51300-03060-SG
ISBN: 03060 2003 CP
Author: Kenneth B. Tator P.E.
Publication Date: 2003
$20.00

Corrosion and structural deterioration due to microbiologically influenced sulfate reduction and hydrogen sulfide gas oxidation to sulfuric acid are responsible for much of the expense related to santiatry sewage collection systems.  This paper explains the mechanism of this biologically induced corrosion, its consequence, and methods to mediate it.
Picture for 05534 Membrane Technology Treating Oily Wastewater
Available for download

05534 Membrane Technology Treating Oily Wastewater for Reuse

Product Number: 51300-05534-SG
ISBN: 05534 2005 CP
Author: Jeff Peeters and Sara Theodoulou, Zenon Environmental Inc.
$20.00
Picture for 04435 Electrochemical Techniques: Investigation
Available for download

04435 Electrochemical Techniques: Investigation of Corrosion in a Major Metropolitan Wastewater Treatment Facility

Product Number: 51300-04435-SG
ISBN: 04435 2004 CP
Author: Jack Tinnea, Tinnea & Associates; Bernard S. Covino Jr., Sophie J. Bullard, Stephen D. Cramer, Gordo
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support