Determination of the Fate and Behavior of a Commercial Surfactant in a Water Recycle System (WRS)

Rector, Tony; Jackson, W. Andrew; Rainwater, Ken; Pickering, Karen D.

doi:10.4271/2003-01-2558

Cited by 6 publications

(3 citation statements)

References 6 publications

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“…In the presence of high levels of ammonia and hydrogen sulfide gasses, carbon removal in the liquid phase remained steady (based on the parameters in Table 3). The 79 6 3% DOC percent conversion over all test points is significantly higher than values reported in the literature for biodegradation of SLES and DSCADA in an anaerobic packed-bed reactor (Rector et al, 2003). These results are directly linked to those in Figure 4, as the majority of DOC was contributed by graywater.…”

Section: Resultssupporting

confidence: 58%

“…Chemoheterotrophic microbes are the key organism in metabolizing organic compounds. Chemoheterotrophic surfactant degradation has been reported in both aerobic (Sharvelle et al, 2004) and anaerobic (Rector et al, 2003) bioprocessors. Bacteria that oxidize dissolved hydrogen sulfide, such as beggiatoa, must compete with chemoheterotrophic surfactant-degrading organisms.…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous Treatment of Graywater and Waste Gas in a Biological Trickling Filter

McLamore

Sharvelle

Huang

et al. 2008

Water Environment Research

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Biological processors are typically used in liquid-and gasphase remediation as separately staged systems. This research presents a novel application of a biotrickling filter operated for simultaneous treatment of contaminants present in graywater and waste gas (ammonia and hydrogen sulfide). Liquid-and gas-phase contaminants were monitored via bioreactor influent/effluent samples over the course of a 300-day study. An oxygenbased bioassay was used to determine spatial location of the functional groups involved in the biodegradation of surfactants, dissolved hydrogen sulfide, and ammonium. Results indicated that a biotrickling filter is able to support the wide range of microbial species required to degrade the compounds found in graywater and waste gas, maintaining conversion efficiencies greater than 90% for parent surfactant compounds and waste gas constituents. These results provide evidence of an operational scheme that potentially reduces footprint size and cost of graywater/waste gas biotreatment. Water Environ. Res., 80, 2096Res., 80, (2008.

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Section: Resultssupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Simultaneous Treatment of Graywater and Waste Gas in a Biological Trickling Filter

McLamore

Sharvelle

Huang

et al. 2008

Water Environment Research

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“…Feed was formulated by preparing 6.0 L of feed (6,11,16,17) and adding 2.0 L of feed to each tank. For further details on the PPKm see Rector et al (20) and Sharvelle et al (22). Details on the composition of the HC may be found in Campbell et al (3) and Verostko et al (27).…”

Section: Experiments Set #1: Determination Of Bioavailable Docmentioning

confidence: 99%

Dynamics of Human Urine Storage in the Early Planetary Base Wastestream

McLamore

Morse²,

Jackson³

2007

habitation (elmsford)

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Although current proposed water recovery systems in space do not incorporate biotreatment technologies, research has indicated that bioprocessors (BP) may be a potential primary treatment technology in integrated advanced life support systems for long-duration space missions. Little data have been reported on the activity of nonacidified wastewater in the collection system prior to entering water recovery systems. These reactions are vital in accurately quantifying biosystem performance, mass balances, and microbial kinetics for bioprocessors operated on dynamic wastestreams. The bioavailable dissolved organic carbon and ammonium concentrations of storage tank grab samples may vary by up to 44 ± 9% and 81 ± 12%, respectively, in a urine-containing wastestream. A model for quantifying the average rate of microbially based holding tank activity is presented. A brief enzymatic inhibition study indicated that surfactants contained within the wastestream may be inhibiting feed tank urease activity, causing the organic carbon and ammonium variability. The aim of this research is to quantify storage tank reactions so that future bioprocessor models reflect only the activity occurring within the BP, and not that of the feed tank. Although microbially active collection vessels may be a consideration for long-duration missions, their activity should be modeled independently to avoid the "black box" approach to modeling BP dynamics. The results will aid future researchers in operating biosystems on urine-gray water wastestreams.

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