Clogging of landfill tyre and aggregate drainage layers by methanogenic leachate and implications for practice

Beaven, R.P.; Hudson, A.P.; Knox, K.; Powrie, W.; Robinson, John P.

doi:10.1016/j.wasman.2012.10.021

Cited by 31 publications

(18 citation statements)

References 23 publications

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“…Other factors could have been the slightly low reactor temperatures during the winter period, the time needed for biofilms to establish, and possibly shorter hydraulic retention times within the reactors than in a real drainage layers. Differences between the outcomes of the studies may be attributed to the all these reported factors (low organic strength of leachate used, very low temperature and saturated/unsaturated conditions, during test opted by Beaven et al (2013), significantly different in the study conditions opted by the present authors.…”

Section: Interpretation and Validation Of The Obtained Resultsmentioning

confidence: 63%

“…Adsorption was another important characteristic of tires mainly due to the composition of tire shreds/chips which also supported the use of tire shreds/chips in the drainage layer systems. Beaven et al (2013) observed significant removal of suspended solids occurred to more or less the same extent in both the unsaturated and saturated reactors containing tire shreds (50-200 mm) and gravel (20-40 mm). The extent of removal ranged from 10 to 50 % (Table 4).…”

Section: Interpretation and Validation Of The Obtained Resultsmentioning

confidence: 79%

“…Rowe (2007), Beaven et al (2013) also showed that tire shreds generally have hydraulic conductivity one to two orders of magnitude higher than the minimum design performance criterion.…”

Section: Gravel and Tire Chips Used Alonementioning

confidence: 99%

“…Composition of real ''high strength'' active MSW site leachate used in the study and relative comparison with the leachate strength used by other researchers in the clogging studiesBeaven et al 2013) …”

mentioning

confidence: 99%

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Performance Assessment of Gravel–Tire Chips Mixes as Drainage Layer Materials Using Real Active MSW Landfill Leachate

2015

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Potential of clogging for rubber tire chips, gravel and their relative performance for transmitting high strength leachate when arranged in proportionate layers of relative thickness and in random state mixes of various percentage compared to the case of used alone were studied through column experiments. Comparative hydraulic performance of gravel and tire chips in their different combinations with percentage change (reduction) in COD, TSS, Ca-hardness and TDS concentration levels for the real active high strength MSW landfill leachate with time were investigated. Experiments were performed to simulate conditions occurring at the base of all active MSW landfills, in an attempt to replicate reasonably worst case conditions. Results clearly showed that the combinations ds (scrap tire chips layer thickness)/dg (gravel layer thickness) = 0.25, 0.50 (arranged by relative thickness) and Ws:Wg = 1:3 (25 % tire chips:75 % gravel; mixed by weight friction of each component) were good in term of obtaining initially relatively free drainage. Minor reduction in hydraulic conductivity for fairly longer duration, due to lesser clogging and small reduction in COD, TSS and Cahardness concentration levels were observed for these combinations. These experimental findings may prove to be very useful for the proper design, long term performance and service life of all tire chips-gravel made drainage layers of all the active MSW landfill leachate collection and removal systems.

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Section: Interpretation and Validation Of The Obtained Resultsmentioning

confidence: 63%

Section: Interpretation and Validation Of The Obtained Resultsmentioning

confidence: 79%

“…Rowe (2007), Beaven et al (2013) also showed that tire shreds generally have hydraulic conductivity one to two orders of magnitude higher than the minimum design performance criterion.…”

Section: Gravel and Tire Chips Used Alonementioning

confidence: 99%

mentioning

confidence: 99%

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Performance Assessment of Gravel–Tire Chips Mixes as Drainage Layer Materials Using Real Active MSW Landfill Leachate

2015

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“…As per current statistics, rubber industries consume mostly SBR (~74%) among other synthetic rubbers globally. It is proved beyond doubts that in current century, disposal of massive discarded rubber products poses threat to ecological environment, although there are several existing disposal methods such as landfilling, incineration, and pyrolysis of waste rubber products. Devulcanization/reclaiming of scrap rubber is considered to be the most desirable approach to solve the disposal problem as it gives the scope of being reused in light duty rubber goods, besides it saves our valuable petroleum resources.…”

Section: Introductionmentioning

confidence: 99%

Manifestation of accelerator type and vulcanization system on the properties of silica‐reinforced SBR/devulcanize SBR blend vulcanizates

Ghosh

Ghorai

Jalan³

et al. 2018

Adv Polym Technol

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Mechanochemically devulcanized styrene-butadiene rubber, prepared by bis [3-(triethoxysilyl)propyl]-tetrasulfide, was blended with fresh styrene-butadiene rubber. The ultimate properties of the blend vulcanizate depend on a three-dimensional network structure formed during vulcanization which relies mainly on the accelerator and the vulcanizing system used during compounding. The effect of monosulfide, disulfide, and poly sulfide cross-links, which primarily gets controlled by different accelerators such as N-cyclohexyl-benzothiazyl-sulfenamide (CBS), tetramethylthiuram disulfide, 2-mercaptobenzothiazol, and N-tert-butyl-2-benzothiazyl-sulfona mide on mechanical, thermal, and dielectric behavior of the blend vulcanizates, was studied. The results indicate that the semi-efficient CBS vulcanizate has superior mechanical and thermal properties. Therefore, the effect of accelerator to sulfur ratio, that is, (accelerator/sulfur) on the properties of the blend vulcanizates was determined. It is to highlight that a distinctive correlation is observed between the crosslink types and the fraction of immobilized polymer chains of the blend vulcanizates.Further, the effect of cross-link types on segmental dynamics of the blend vulcanizates was studied through broadband dielectric spectroscopy. The SEM micrographs indicate the homogeneity of the blend vulcanizates. K E Y W O R D Saccelerator, blend, cross-link density, devulcanize rubber, styrene-butadiene rubber

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Drainage Performance of Different Sizes Tire Chips used Alone and Mixed with Natural Aggregates as Leachate Drainage Layer Material

2016

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Clogging of landfill tyre and aggregate drainage layers by methanogenic leachate and implications for practice

Cited by 31 publications

References 23 publications

Performance Assessment of Gravel–Tire Chips Mixes as Drainage Layer Materials Using Real Active MSW Landfill Leachate

Performance Assessment of Gravel–Tire Chips Mixes as Drainage Layer Materials Using Real Active MSW Landfill Leachate

Manifestation of accelerator type and vulcanization system on the properties of silica‐reinforced SBR/devulcanize SBR blend vulcanizates

Drainage Performance of Different Sizes Tire Chips used Alone and Mixed with Natural Aggregates as Leachate Drainage Layer Material

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