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Utilization of Pulp and Paper Mill Sludge as Filler in Nylon Biocomposite ProductionEdalat Manesh, Maryam 21 August 2012 (has links)
The biological treatment of pulp and paper mills effluents results in the production of waste secondary sludge which is hard and costly to dewater and dispose. Secondary sludge, which is structurally comparable to the municipal sewage sludge, is composed of microbial cells, organic woody materials, and ash. In this work, the use of this waste biosolid as renewable and cost-cutting filler in the composite industry is proposed. Moreover, the effect of enzymatic treatment of the waste biosolid on the final properties of the manufactured biocomposite is studied. The high protein content of the secondary sludge (35 ± 5%) and the surface thermodynamics measured by Inverse Gas chromatography (IGC) led us to choose Nylon 11 as the main polymeric matrix. The biocomposites samples produced by compounding and injection molding of different mixtures of dried secondary sludge and Nylon were tested. The results of mechanical strength tests showed that a 10% sludge content does not lead to any significant deterioration of either tensile or flexural strengths. Therefore, it is concluded that the secondary sludge may be used as filler to reduce the cost while maintaining the mechanical properties of Nylon. Enzymatic modification of the waste biosolid to advance its application from cheapening filler to reinforcing filler has also been proposed in this work. Lipase and laccase utilized for the modification of the sludge in order to reduce the hydrophobicity and increase the molecular weight, respectively. Lipase application did not lead to any significant changes in either tensile or flexural strengths. This is attributed to the rather low content of lipids in the sludge. On the other hand, enzymatic modification of the sludge by laccase which increases the molecular weight of the existing lignins, resulted in significant improvement of the flexural strength of the manufactured biocomposite.
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Application of Life Cycle Assessment in the water industry as a tool to support strategic decision-makingDennison, Fiona Joan January 2000 (has links)
No description available.
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Sludge dewatering in terms of structure and hydraulic conductivityBansal, S. P. January 1987 (has links)
No description available.
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Molecular biological characterisation of the functional microbial communities in anaerobic digestersMalhotra, Saimon January 2003 (has links)
No description available.
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Activated sludge : Surface properties and settlementEvenett, K. M. January 1986 (has links)
No description available.
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Spatial distribution of phosphorus in the sediments of a constructed wetland receiving treated sewage effluent /Rowley, Maxine Joy. January 1998 (has links)
Thesis (M.Sc. Hons.) -- University of Western Sydney, Hawkesbury, 1998. / Thesis submitted for the degree of Master of Science (Hons.). Spine title: Phosphorus in constructed wetland sediments. Includes bibliographical references (leaves 114-123).
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Flotation applied to silicate sludgeKlepel, Yaro. Greene, Erskine. January 1916 (has links) (PDF)
Thesis (M.S.)--University of Missouri, School of Mines and Metallurgy, 1916. / The entire thesis text is included in file. Typescript. Illustrated by authors. Title from title screen of thesis/dissertation PDF file (viewed April 2, 2009)
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Engineered treatment of As-laden regeneration brine from ion exchange processesSteinwinder, Thomas Riemann Zhao, Dongye. January 2006 (has links) (PDF)
Thesis(M.S.)--Auburn University, 2006. / Abstract. Includes bibliographic references (p.92-99).
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The use of a microbubble dispersion to enhance a dissolved air flotation system in a wastewater treatment sludge media /O'Palko, Brian A., January 1991 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 91-94). Also available via the Internet.
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The effect of inert biomass support media on activated sludge treatment of a high-strength industrial wastewater /Haseltine, Michael H., January 1991 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 83-85). Also available via the Internet.
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