Activated Carbon Versus Resin Adsorption of 2‐Methylisoborneol and Chloroform

Chudyk, Wayne; Snoeyink, Vernon L.; Beckmann, D.; Temperly, Terrance J.

doi:10.1002/j.1551-8833.1979.tb04409.x

Cited by 28 publications

(9 citation statements)

References 10 publications

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“…Granular activated carbon (GAC) has been used extensively for the removal of compounds causing taste, odor, and color problems in drinking water (10,18,23). In addition, this treatment process is recognized as an effective means of removing organic or precursor compounds that may react with chlorine to produce trihalomethanes and other disinfection by-products (7,18,21).…”

mentioning

confidence: 99%

Assessment of the bacteriological activity associated with granular activated carbon treatment of drinking water

Stewart¹,

Wolfe²,

Means³

1990

Appl Environ Microbiol

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Bacteriological analyses were performed on the effluent from a conventional water treatment pilot plant in which granular activated carbon (GAC) had been used as the final process to assess the impact of GAC on the microbial quality of the water produced. Samples were collected twice weekly for 160 days from the effluents of six GAC columns, each of which used one of four different empty-bed contact times (7.5, 15, 30, and 60 min). The samples were analyzed for heterotrophic plate counts and total coliforms. Effluent samples were also exposed to chloramines and free chlorine for 60 min (pH 8.2, 23°C). Bacterial identifications were performed on the disinfected and nondisinfected effluents. Additional studies were conducted to assess the bacteriological * Corresponding author.

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confidence: 99%

Assessment of the bacteriological activity associated with granular activated carbon treatment of drinking water

Stewart¹,

Wolfe²,

Means³

1990

Appl Environ Microbiol

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“…These standards were amended to include the establishment of maximum contaminant levels of four halo-organic substances known as the trihalomethanes (THM) which are formed when humic compounds are chlorinated (2,10,23,30,36,37,43,45). Since these chlorinated compounds are carcinogenic or mutagenic (28,39,46), several methods for their removal from potable waters have been investigated (5,11,29,38). One of the most promising methods consists of the removal of THM precursor compounds through their adsorption by granular activated carbon (GAC).…”

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Microbial growth associated with granular activated carbon in a pilot water treatment facility

Wilcox¹,

Chang²,

Dickson³

et al. 1983

Appl Environ Microbiol

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The microbial dynamics associated with granular activated carbon (GAC) in a pilot water treatment plant were investigated over a period of 16 months. Microbial populations were monitored in the influent and effluent waters and on the GAC particles by means of total plate counts and ATP assays. Microbial populations between the influent and effluent waters of the GAC columns generally increased, indicating microbial growth. The dominant genera of microorganisms isolated from interstitial waters and GAC particles were Achromobacter, Acinetobacter, Aeromonas, Alcaligenes, Bacillus, Chromobacterium, Corynebacterium, Micrococcus, Microcyclus, Paracoccus, and Pseudomonas. Coliform bacteria were found in small numbers in the effluents from some of the GAC columns in the later months of the study. Oxidation of influent waters with ozone and maintenance of aerobic conditions on the GAC columns failed to appreciably enhance the microbial growth on GAC. After the enactment of the Safe Drinking Water Act in 1974, the U.S. Environmental Protection Agency, acting under the authority of this legislation, promulgated the National Interim Primary Drinking Water Standards. These standards set maximum contaminant levels for several inorganic elements, organic compounds, organic pesticides, radioactivity, and microbial

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“…This may be true, but it does not guarantee that the earthy, musty odor would be eliminated from the water within the same time frame. Additional studies were conducted for PAC (100 χ 200 mesh) adsorption of MIB [70]. In this case, four bituminous coal-based carbons and one lignitebased carbon were employed in a comparative study.…”

Section: Compounds Causing Tastes and Odorsmentioning

confidence: 99%