Waste green sands as reactive media for groundwater contaminated with trichloroethylene (TCE)

Lee, Taeyoon; Benson, Craig H.; Eykholt, Gerald R.

doi:10.1016/j.jhazmat.2003.10.007

Cited by 39 publications

(19 citation statements)

References 30 publications

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“…Discerning the inherent variability between batch and column experiments within the literature cited in the meta-analysis is challenging. Reasons for this include: ( i ) one or both microcosm types did not have a replicate [46]; ( ii ) replicates are not truly replicates with variation in an additional parameter (e.g., dissolved oxygen, temperature) [45, 47, 48]; ( iii ) replicate results are not presented [42, 43]; ( iv ) replicate results are presented in multiple graphs (instead of a single graph with error bars) [41, 43, 44, 49]; ( v ) replicate results are plotted together without discerning which replicate is which [49]. However in two studies, greater variability in columns data over batch data can qualitatively be discerned [41, 49], which agrees with the experimental results.…”

Section: Resultsmentioning

confidence: 99%

Comparative meta-analysis and experimental kinetic investigation of column and batch bottle microcosm treatability studies informing in situ groundwater remedial design

Driver

Roberts²,

Dollar³

et al. 2017

Journal of Hazardous Materials

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A systematic comparison was performed between batch bottle and continuous-flow column microcosms (BMs and CMs, respectively) commonly used for in situ groundwater remedial design. Review of recent literature (2000–2014) showed a preference for reporting batch kinetics, even when corresponding column data were available. Additionally, CMs produced higher observed rate constants, exceeding those of BMs by a factor of 6.1 ± 1.1 standard error. In a subsequent laboratory investigation, 12 equivalent microcosm pairs were constructed from fractured bedrock and perchloroethylene (PCE) impacted groundwater. First-order PCE transformation kinetics of CMs were 8.0 ± 4.8 times faster than BMs (rates: 1.23 ± 0.87 vs. 0.16 ±0.05 d−1, respectively). Additionally, CMs transformed 16.1 ± 8.0-times more mass than BMs owing to continuous-feed operation. CMs are concluded to yield more reliable kinetic estimates because of much higher data density stemming from long-term, steady-state conditions. Since information from BMs and CMs is valuable and complementary, treatability studies should report kinetic data from both when available. This first systematic investigation of BMs and CMs highlights the need for a more unified framework for data use and reporting in treatability studies informing decision-making for field-scale groundwater remediation.

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Section: Resultsmentioning

confidence: 99%

Comparative meta-analysis and experimental kinetic investigation of column and batch bottle microcosm treatability studies informing in situ groundwater remedial design

Driver

Roberts²,

Dollar³

et al. 2017

Journal of Hazardous Materials

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“…l Waste slurries and iron hydroxide from fertilizer industries [144] l Waste slurries from seafood-processing industries [145] l Greensand, iron slag, and blast furnace slag from iron and steel industries [146,147] l Activated red mud from aluminum industry [148] l Petroleum coke from oil sands industry [149] l Black liquor from paper industries [150,151] l Bagasse fly ash from sugar industry [152] Some other noncategorized industrial wastes that have been used are activated carbon from scrap tires [153,154] and activated silicon from scrap nonmetallic printed circuit boards [155].…”

Section: Waste Materialsmentioning

confidence: 99%

Removal of Toxic Materials from Aqueous Streams

Zouboulis

Peleka

Samaras

2015

Mineral Scales and Deposits

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“…The columns were treated with basal salt medium containing one of the following chloroethenes: TCE at 7 μM (0:9 mg∕L), TCE at 100 μM (13 mg∕L), or cDCE at 16 μM (1:6 mg∕L). These concentrations were chosen to be representative of chloroethene concentrations commonly found in groundwater at contaminated sites (Lee et al 2004;Mayer et al 2001;Puls et al 1999). Control columns, which were not inoculated with the BDI culture, and a control column that did not contain chitin but was inoculated, were also evaluated.…”

Section: Semicontinuous Column Studymentioning

confidence: 99%

Effects of Chitin Purity and Proppant Loading on the Bioremediation of Chloroethenes

McElhoe

Brennan

2012

J. Environ. Eng.

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Hydraulic fracturing (or fracking) of substrates and proppants into contaminated soils is a developing, but understudied, practice of stimulating in situ bioremediation. In this work, three different purities of the substrate crab shell chitin (SC-20, SC-40, and SC-80), two proppant loadings (sand:chitin mass ratios of 5∶1 and 15∶1), and three chloroethene concentrations (1 and 10 mg∕L trichloroethene, and 1:5 mg∕L cis-1,2-dichloroethene) were experimentally and statistically examined to determine their effects on halorespiration. The least refined crab shell, SC-20, produced the greatest variety of electron donors, converted the highest percentage of contaminant mass to ethene, and supported a significantly greater Dehalococcoides population than the other substrates. Although influent chloroethene concentration and proppant loading did not significantly affect halorespiration (p-values > 0:079), decreasing the proppant loading from 15∶1 to 5∶1 increased the longevity of electron-donor production. These results indicate that funds need not be expended for purification of crab shell substrates, and that SC-20 should be used with proppant loadings of 5∶1 or lower to maximize the duration of electron-donor production at sites with potential biodegradation rate limitations.

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Waste green sands as reactive media for groundwater contaminated with trichloroethylene (TCE)

Cited by 39 publications

References 30 publications

Comparative meta-analysis and experimental kinetic investigation of column and batch bottle microcosm treatability studies informing in situ groundwater remedial design

Comparative meta-analysis and experimental kinetic investigation of column and batch bottle microcosm treatability studies informing in situ groundwater remedial design

Removal of Toxic Materials from Aqueous Streams

Effects of Chitin Purity and Proppant Loading on the Bioremediation of Chloroethenes

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