Author: David Hanigan
Publisher:
ISBN:
Category : Electronic Dissertations
Languages : en
Pages : 76
Book Description
The objective of this research was to investigate NOM removal with activated carbon and MIEX®. Hydrophilic (HPI), hydrophobic (HPO), and transphilic (TPI) NOM was fractionated and subsequent DBP formation from these fractions was studied. Several new adsorptive materials (greensand, carbon nanotubes, iron impregnated activated carbon) were tested for DBP reduction potential. Reductions by the materials were poor and therefore the materials were not investigated further. Activated carbons, although similar in structure, perform differently from each other. Aqua Nuchar® and Hawkins Sabre Series® had greater than 30% difference in TTHM FP reduction under the same test conditions. None of the activated carbons investigated were found to have potential for brominated DBP precursor removal. When MIEX® (magnetic ion exchange) was compared to activated carbon with respect to NOM fraction removal, it was found that MIEX® removed more of the HPI and TPI fractions. This was represented well in DBP FP reductions specifically derived from reactions with NOM in these fractions. In particular, MIEX® decreased NOM in the HPI fraction only 10% more than activated carbon but decreased TTHM FP 34% greater than activated carbon. This suggests that MIEX® preferentially removes DBP precursors to a greater extent than activated carbon. MIEX® was also found to decrease formation of brominated DBPs. SUVA, UV254, DOC, and chlorine demand were all investigated as surrogate parameters for DBPs. UV254 was found to correlate best with DBP formation with 0.56
Removal of Disinfection By-product Precursors by Activated Carbon and MIEX®
Removal of Precursors to Disinfection ByProducts in Drinking Water
Author:
Publisher: DIANE Publishing
ISBN: 1422330001
Category :
Languages : en
Pages : 60
Book Description
Publisher: DIANE Publishing
ISBN: 1422330001
Category :
Languages : en
Pages : 60
Book Description
Activated Carbon Adsorption of Disinfection By-product Precursors and Natural and Synthetic Organic Compounds
Effect of Powdered Activated Carbon Base Material and Size on Disinfection By-Product Precursor and Trace Organic Pollutant Removal
Removal of Disinfection By Products Precursors
Author: Vedat Uyak
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659428609
Category :
Languages : en
Pages : 164
Book Description
Chlorination is the most commonly employed chemical disinfectant in drinking water treatment nowadays. However, several studies reported that chlorination of organic matter in fresh water resulted in formation of disinfection by-products (DBP). Because of concerns over the health effects of organic by-products of chlorination, the use of alternative disinfectants of chloramines, ozone, and chlorine dioxide as primary or secondary disinfection agents is increasing. However, each of these alternatives has also been shown to form its own set of DBP. Concerns regarding the potential health effects of DBP prompted several industrialized countries to develop a number of regu-lations. The disinfectant/disinfection by-product (D/DBP) regulation in United States of America (USA) has set maximum contaminant levels for trihalomethanes (THM) and haloacetic acids (HAA) of 80 and 60 ug/l, respectively.
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659428609
Category :
Languages : en
Pages : 164
Book Description
Chlorination is the most commonly employed chemical disinfectant in drinking water treatment nowadays. However, several studies reported that chlorination of organic matter in fresh water resulted in formation of disinfection by-products (DBP). Because of concerns over the health effects of organic by-products of chlorination, the use of alternative disinfectants of chloramines, ozone, and chlorine dioxide as primary or secondary disinfection agents is increasing. However, each of these alternatives has also been shown to form its own set of DBP. Concerns regarding the potential health effects of DBP prompted several industrialized countries to develop a number of regu-lations. The disinfectant/disinfection by-product (D/DBP) regulation in United States of America (USA) has set maximum contaminant levels for trihalomethanes (THM) and haloacetic acids (HAA) of 80 and 60 ug/l, respectively.
Removal of Disinfection By-product Precursors Using Magnetic Ion Exhange (MIEX®)
Author: Sarah Lindsey Cousins
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 50
Book Description
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 50
Book Description
Modeling the Performance of Point-of-use Activated Carbon Unit for the Removal of Disinfection By-products from Drinking Water
Author: Malak Sami Naguib
Publisher:
ISBN:
Category : Carbon, Activated
Languages : en
Pages : 274
Book Description
Publisher:
ISBN:
Category : Carbon, Activated
Languages : en
Pages : 274
Book Description
Disinfection By-product Formation by Alternative Disinfectants and Removal by Granular Activated Carbon
Author: Wayne E. Koffskey
Publisher:
ISBN:
Category : Disinfection and disinfectants
Languages : en
Pages : 3
Book Description
Publisher:
ISBN:
Category : Disinfection and disinfectants
Languages : en
Pages : 3
Book Description