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Full-Text Articles in Physical Sciences and Mathematics
Computer Simulation Of Lime-Soda Water Softening Process, J. C. Y. Chen, I. W. Wei
Computer Simulation Of Lime-Soda Water Softening Process, J. C. Y. Chen, I. W. Wei
Irvine W. Wei
No abstract provided.
Chemistry Of Lime-Soda Softening Of Cooling Water, Li-Shiang Liang, David J. Goldstein, Irvine W. Wei
Chemistry Of Lime-Soda Softening Of Cooling Water, Li-Shiang Liang, David J. Goldstein, Irvine W. Wei
Irvine W. Wei
No abstract provided.
Cyclic Heating To Inhibit Bacterial Growth In Activated Carbon Point-Of-Use Treatment Devices, Irwin Silverstein, Irvine W. Wei
Cyclic Heating To Inhibit Bacterial Growth In Activated Carbon Point-Of-Use Treatment Devices, Irwin Silverstein, Irvine W. Wei
Irvine W. Wei
The effectiveness of using heat treatment on a cyclic basis as a means of inhibiting bacterial growth in activated carbon point-of-use treatment devices was examined. Heat treated and non-heat treated devices were compared in a controlled experiment with respect to parameters such as standard plate count, total organic carbon, total residual chlorine and head loss. The results of the study indicated that cyclic heat treatment can inhibit bacterial growth on the surface of granular activated carbon without compromising total organic carbon and total residual chlorine removal efficiencies or accelerating head loss. Microbiological testing verified that the control device had become …
Anaerobic Biodegradation Of Rdx And Tce: Single- And Dual-Contaminant Batch Tests, Travis S. M. Young, Matthew C. Morley, Daniel D. Snow
Anaerobic Biodegradation Of Rdx And Tce: Single- And Dual-Contaminant Batch Tests, Travis S. M. Young, Matthew C. Morley, Daniel D. Snow
Daniel D Snow
Several sites in the United States have groundwater contaminated with mixtures of high explosives and chlorinated solvents. This research examined the ability of two microbial cultures (anaerobic sludge and a facultative enrichment culture) to biodegrade single- and dual-contaminant mixtures of trichloroethene (TCE) and hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) under anaerobic conditions. In single component batch tests, both cultures degraded 0.6–1 mg RDX/L and its nitroso metabolites to below detection limits in <7 days. During initial 9-day TCE biodegradation tests, the anaerobic sludge did not transform TCE, whereas the facultative culture transformed approximately 10% of the initial 1.4 mg TCE/L. Prior to dual-contaminant batch …