A Simplified Method to Determine The Powdered Activated Carbon Dose Required to Remove Methylisoborneol

Gillogly, Thomas E. T.; Snoeyink, Vernon L.; Newcombe, Gayle; Elarde, Joseph R.

doi:10.2166/wst.1999.0261

Cited by 13 publications

(8 citation statements)

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“…For the concentration range used in this study (2.7–37.4 μg/L), the removal of CYN by PAC was determined to be independent of the initial concentration of CYN. This is in agreement with several studies in which this trend has been apparent in the PAC adsorption of other cyanobacterial metabolites including microcystin, MIB, and geosmin (Cook & Newcombe, 2002; Cook et al, 2001; Graham et al, 2000; Gillogly et al, 1999).…”

Section: Resultssupporting

confidence: 93%

Optimizing PAC and chlorination practices for cylindrospermopsin removal

Ho¹,

Slyman²,

Kaeding³

et al. 2008

Journal AWWA

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Cylindrospermopsin (CYN) is an emerging cyanobacterial toxin whose detection frequency is increasing in water bodies worldwide. Because it has a high propensity to exist in extracellular form, effective water treatment practices are required to ensure removal. In this study, powdered activated carbon (PAC) and chlorination were evaluated for CYN removal under practical water treatment plant conditions. The homogenous surface diffusion model (HSDM) was used to predict CYN adsorption using two different PACs. The HSDM also aided in the derivation of a PAC dose table that could be used to optimize PAC application for CYN removal. Chlorine was shown to be an effective oxidant for CYN; the chlorine concentration times contact time value of 3 mg × min/L was shown to be sufficient for complete CYN oxidation in two drinking waters. This study provides pertinent information for the application of PAC and chlorination practices for optimal CYN removal.

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Section: Resultssupporting

confidence: 93%

Optimizing PAC and chlorination practices for cylindrospermopsin removal

Ho¹,

Slyman²,

Kaeding³

et al. 2008

Journal AWWA

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“…. Similar to previous studies , the fraction remaining of 2‐MIB was independent of the initial concentration. Once the desired fraction remaining is determined from the initial and control goal concentrations of 2‐MIB, the minimum carbon dose required can be estimated easily from the graph.…”

Section: Resultssupporting

confidence: 89%

Quick Response to 2‐MIB Episodes Based on Native Population Odor Sensitivity Evaluation

Yang

et al. 2014

CLEAN Soil Air Water

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Taste and odor have been a recurring problem for many water utilities. This paper established an optimized strategy to cope with 2-methylisoborneol (2-MIB) by combining the determination of the control goal according to native population sensitivity and the prediction of the optimum powdered activated carbon (PAC) dose using the homogeneous surface diffusion model (HSDM). The results showed that the population in Beijing was very sensitive to 2-MIB. Based on flavor profile analysis result conducted by a local panel, the odor threshold concentration (OTC) for Beijing population was determined to be 7.1 ng/L. This value was further certified by the significant odor complaint evaluation using a logit model and set as the control goal for the water treatment plant. According to the OTC level, a 2-MIB removal prediction curve was then constructed for estimating the optimum PAC dose based on the HSDM. This study can provide a practical technical solution for the control of seasonable odor problems in waterworks.

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“…The similar results on adsorption characteristics of 2-MIB and geosmin were reported [6,8,9]. Cook et al [9] demonstrated more than 80 percentage removal of 2-MIB and geosmin by fine PAC with the PAC dosages of 15 mg L −1 and 5 mg L −1 , respectively when the initial concentrations of four raw water sources were spiked to be 100 ng L −1 .…”

Section: 3supporting

confidence: 73%

“…Since the procedures for analyzing the T&Os are costly and time consuming, many researchers tried to predict proper dose of PAC by using isotherm data and modified models [6][7][8]. However, generalization of optimum PAC dosage is problematic because the adsorption efficiency is dependent on type of activated carbon and source water characteristics; concentration of NOM [9].…”

Section: Introductionmentioning

confidence: 99%