Data

Decommissioning particle sizing after a freeze-thaw laboratory based simulation of a permeable reactive barrier

Australian Antarctic Division
Statham, T. ; STATHAM, TOM
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://data.aad.gov.au/metadata/AAS_4029_Particle_Sizing&rft.title=Decommissioning particle sizing after a freeze-thaw laboratory based simulation of a permeable reactive barrier&rft.identifier=http://data.aad.gov.au/metadata/AAS_4029_Particle_Sizing&rft.publisher=Australian Antarctic Data Centre&rft.description=The impact of freeze-thaw cycling on a ZVI and inert medium was assessed using duplicated Darcy boxes subjected to 42 freeze-thaw cycles. This dataset consists of particle sizing during the decommissioning process of the experiment. Two custom built Perspex Darcy boxes of bed dimensions: length 362 mm, width 60 mm and height 194 mm were filled with a mixture of 5 wt% Peerless iron (Peerless Metal Powders and Abrasive, cast iron aggregate 8-50 US sieve) and 95 wt% glass ballotini ground glass (Potters Industries Inc. 25-40 US sieve). This ratio of media was selected to ensure that most aqueous contaminant measurements were above the analytical limit of quantification (LOQ) for feed solutions at a realistic maximum Antarctic metal contaminant concentration at a realistic field water flow rate. All solutions were pumped into and out of the Darcy boxes using peristaltic pumps and acid washed Masterflex FDA vitron tubing.Dry media was weighed in 1 kg batches and homogenised by shaking and turning end over end in a ziplock bag for 1 minute. To ensure that the media was always saturated, known amounts of Milli-Q water followed by the homogenised media were added to each box in approximately 1 cm layers. 20 mm of space was left at the top of the boxes to allow for frost heave and other particle rearrangement processes.On completion of freeze-thaw cycling and solution flow (refer to Statham 2014), an additional series of assessments was conducted. The media from between the entry weir and the first sample port was removed in five approximately 400 g samples of increasing depth. This procedure was repeated between the last sample port and the exit weir. These samples were left to dry in a fume cabinet before duplicated particle sizing using a Endcotts minor sieve shaker.Progress Code: completedStatement: Two samples were too wet during a first attempt of sieving. This material was left to dry for before completing the analysis.&rft.creator=Statham, T. &rft.creator=STATHAM, TOM &rft.date=2014&rft.coverage=westlimit=110.37415; southlimit=-66.37716; eastlimit=110.74493; northlimit=-66.20488&rft.coverage=westlimit=110.37415; southlimit=-66.37716; eastlimit=110.74493; northlimit=-66.20488&rft_rights=These data are publicly available for download from the provided URL.&rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4029_Particle_Sizing when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=environment&rft_subject=EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > CONTAMINANT LEVELS/SPILLS&rft_subject=EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > FREEZE/THAW&rft_subject=Freeze-thaw&rft_subject=Particle Sizing&rft_subject=SMPS > Scanning Mobility Particle Sizer&rft_subject=LABORATORY&rft_subject=AMD/AU&rft_subject=CEOS&rft_subject=AMD&rft_subject=CONTINENT > ANTARCTICA&rft_subject=GEOGRAPHIC REGION > POLAR&rft.type=dataset&rft.language=English Access the data

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These data are publicly available for download from the provided URL.

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4029_Particle_Sizing when using these data.

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Full description

The impact of freeze-thaw cycling on a ZVI and inert medium was assessed using duplicated Darcy boxes subjected to 42 freeze-thaw cycles. This dataset consists of particle sizing during the decommissioning process of the experiment.

Two custom built Perspex Darcy boxes of bed dimensions: length 362 mm, width 60 mm and height 194 mm were filled with a mixture of 5 wt% Peerless iron (Peerless Metal Powders and Abrasive, cast iron aggregate 8-50 US sieve) and 95 wt% glass ballotini ground glass (Potters Industries Inc. 25-40 US sieve). This ratio of media was selected to ensure that most aqueous contaminant measurements were above the analytical limit of quantification (LOQ) for feed solutions at a realistic maximum Antarctic metal contaminant concentration at a realistic field water flow rate. All solutions were pumped into and out of the Darcy boxes using peristaltic pumps and acid washed Masterflex FDA vitron tubing.

Dry media was weighed in 1 kg batches and homogenised by shaking and turning end over end in a ziplock bag for 1 minute. To ensure that the media was always saturated, known amounts of Milli-Q water followed by the homogenised media were added to each box in approximately 1 cm layers. 20 mm of space was left at the top of the boxes to allow for frost heave and other particle rearrangement processes.

On completion of freeze-thaw cycling and solution flow (refer to Statham 2014), an additional series of assessments was conducted. The media from between the entry weir and the first sample port was removed in five approximately 400 g samples of increasing depth. This procedure was repeated between the last sample port and the exit weir. These samples were left to dry in a fume cabinet before duplicated particle sizing using a Endcotts minor sieve shaker.

Lineage

Progress Code: completed
Statement: Two samples were too wet during a first attempt of sieving. This material was left to dry for before completing the analysis.

Data time period: 2013-06-06 to 2013-08-12

This dataset is part of a larger collection

Click to explore relationships graph

110.74493,-66.20488 110.74493,-66.37716 110.37415,-66.37716 110.37415,-66.20488 110.74493,-66.20488

110.55954,-66.29102

text: westlimit=110.37415; southlimit=-66.37716; eastlimit=110.74493; northlimit=-66.20488

Other Information
Download point for the data (GET DATA > DIRECT DOWNLOAD)

uri : http://data.aad.gov.au/eds/3815/download

Public information for ASAC project 4029 (PROJECT HOME PAGE)

uri : https://projects.aad.gov.au/report_project_public.cfm?project_no=AAS_4029

Citation reference for this metadata record and dataset (VIEW RELATED INFORMATION)

uri : http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4029_Particle_Sizing

Identifiers
  • global : AAS_4029_Particle_Sizing