Current Search: FAU (x) » poster (x) » College of Engineering and Computer Science (x) » Meeroff, Daniel E. (x)
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Title
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Characterization of Leachate Clogging Solids.
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Creator
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Harris, Alyssa, Purdy, Denys, Meeroff, Daniel E., College of Engineering and Computer Science
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Abstract/Description
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The Solid Waste Authority (SWA) of Palm Beach County collects leachate from its landfill in a gravity pipe leachate collection system (LCS), which is experiencing clogging due to calcium carbonate scale. An investigation was conducted to determine the solids composition and provide engineering solutions to this challenge. During testing, it was found that aerated leachate produced foam, which after vibration and evaporation, formed crystalline solids similar to those found in the SWA LCS. The...
Show moreThe Solid Waste Authority (SWA) of Palm Beach County collects leachate from its landfill in a gravity pipe leachate collection system (LCS), which is experiencing clogging due to calcium carbonate scale. An investigation was conducted to determine the solids composition and provide engineering solutions to this challenge. During testing, it was found that aerated leachate produced foam, which after vibration and evaporation, formed crystalline solids similar to those found in the SWA LCS. The following tests were conducted to determine the water quality of the leachate and the properties of the solids: pH, turbidity, chemical reactivity, biological growth, surface characteristics, and microscopic analysis. After five days of evaporation, the solids collected in all samples represented 46-47% of the leachate’s initial weight. On visual observation, the leachate remnants left both a crystalline and a dark slimy solid, with larger particles in the aerated samples, a possible source of the clogging.
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Date Issued
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2015
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PURL
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http://purl.flvc.org/fau/fd/FA00005195
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Subject Headings
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College students --Research --United States.
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Format
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Document (PDF)
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Title
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Stucco Removal Engineering.
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Creator
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Shaw, Brandon, Murphy, Jonathan, Trotsek, Dylan, Meeroff, Daniel E., Cowan, David, College of Engineering and Computer Science
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Abstract/Description
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Construction workers are exposed to fine particulate inhalation hazards during stucco removal. The ultimate goal of this research is to test a new chemical-assisted method that will reduce workers’ exposures to safer levels. To that end, the minimum specimen size must be determined that will replicate this hazardous work environment. Samples of concrete stucco surfacing material (CSSM) of various sizes ranging from 1-in×1-in. to 8-in.×16-in. were applied to masonry blocks. These specimens...
Show moreConstruction workers are exposed to fine particulate inhalation hazards during stucco removal. The ultimate goal of this research is to test a new chemical-assisted method that will reduce workers’ exposures to safer levels. To that end, the minimum specimen size must be determined that will replicate this hazardous work environment. Samples of concrete stucco surfacing material (CSSM) of various sizes ranging from 1-in×1-in. to 8-in.×16-in. were applied to masonry blocks. These specimens were tested to determine the minimum size needed to produce 150-mg/m3 (one order of magnitude larger than the OSHA exposure limit of 15-mg/m3) of airborne particulate in a 1-m3 test chamber when removed with a chipping hammer. Testing results revealed that 5-in.× 5-in. specimen size yielded on average 180-mg/m3 of particulates.
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Date Issued
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2015
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PURL
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http://purl.flvc.org/fau/fd/FA00005210
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Subject Headings
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College students --Research --United States.
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Format
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Document (PDF)
