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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The chlorination of normal and isopropyl trichloracetates

Gayler, Cecil Winston 05 1900 (has links)
No description available.
2

Abundance of pathogenic bacteria and viral indicators in chlorinated effluents produced by four wastewater treatment plants in the Gauteng Province, South Africa

Dungeni, M, van der Merwe, RR, Momba, MNB 05 October 2010 (has links)
Abstract The failure of South African wastewater treatment plants to produce effluents of a high microbiological quality is a matter of great concern in terms of the pollution of water resources. This study aimed at assessing the effectiveness of 4 wastewater treatment plants in the Gauteng Province, namely the Zeekoegat, Baviaanspoort, Rayton and Refilwe Water Care Works (WCW), in the removal of pathogenic bacteria and viral indicators. Also taken into consideration were free chlorine concentrations and turbidity levels, which were measured using standard methods. Conventional methods and/or polymerase chain reaction (PCR) techniques were used to detect and identify pathogenic bacteria and coliphages. The turbidity ranged from 2.39 to 62.40 NTU and the concentrations of free chlorine ranged from 0.03 to1.60 mg∙ℓ-1 for all plants. Despite high free chlorine residual concentrations in treated effluents, the survival and occurrence of Escherichia coli, Salmonella typhimurium and Vibrio cholerae were significantly higher at Baviaanspoort (100%, 88.2% and 35.3%), Refilwe (87.5%, 59.4% and 21.9%) and Rayton (75%, 38.2% and 9.4%) compared to Zeekoegat, which only showed the survival of E. coli, at a much lower occurrence rate of 8.8%. Somatic and F-RNA coliphages were removed at 15.57 % and 13.96% for Baviaanspoort, 11.62% and 22.42% for Refilwe, 25% and 32.10% for Rayton, and 40.41% and 52.57% for Zeekoegat WCW. Significant correlations were found between pathogenic bacteria and coliphages at all plants (r = 0.765 for Baviaanspoort, r = 0.904 for Zeekoegat, r = 0.680 for Refilwe, r = 0.796 or the Rayton WCW, p < 0.01). A combination of sedimentation, rapid sand filtration and chlorination processes was found to be a major prerequisite for the reduction of turbidity levels and viral indicators and the successful removal of pathogenic bacteria in the Zeekoegat WCW. This study therefore suggests an upgrading of the wastwater treatment plants by including processes such as rapid sand filtration and UV disinfection, which have proved to be effective in the removal and inactivation of pathogenic bacteria and viruses.
3

A study of the reaction of N-chloroamines with electron-rich aromatic compounds

Taylor, J. M. January 1987 (has links)
No description available.
4

Chlorination of aromatic compounds by two phase electrolysis

Forsyth, S. R. January 1987 (has links)
No description available.
5

Optimisation of sodium hypochlorite dosing at Wylfa Power Station : an experimental study with Mytilus edulis

Thompson, Ina Sharon January 1998 (has links)
No description available.
6

Pulsed infrared laser-induced chlorination reactions

Ibrahim, Md. Sani B January 2011 (has links)
Typescript (photocopy). / Digitized by Kansas Correctional Industries
7

The effect of environmental conditions on the reductive dechlorination of pentachlorophenol by a mixed, methanogenic culture

Stuart, Sheryl L. 28 October 1996 (has links)
Graduation date: 1997
8

Chlorination of ketones with selenium oxychloride

Sonnenberg, Fred Max, 1940- January 1963 (has links)
No description available.
9

The hemicelluloses of mesquite wood isolated after chlorination

Nutter, Pauline Elizabeth, 1911- January 1934 (has links)
No description available.
10

Kinetic and mechanistic studies of reactions of atomic chlorine with haloalkanes

Piety, Charles Andrew 08 1900 (has links)
No description available.

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