883 resultados para Municipal Solid Waste Management
Resumo:
Tese (doutorado)—Universidade de Brasília, Centro de Desenvolvimento Sustentável, 2013.
Resumo:
The environmental impacts, caused by the solid residues generation, are an often quoted concern nowadays. Some of these residues, which are originated from different human activities, can be fully reused, reducing the effects of the poor waste management on the environment. During the salt production process, the first formed crystals are discarded as industrial waste. This is mainly made of gypsum that is a calcium sulfate dihydrate (CaSO4.2H2O). The gypsum in question may go through a calcination process due to the plaster (CaSO4.0,5H2O) production and then the application on the cement industry. Considering the necessity of development and application for these industrial wastes, this paper aims to analyze the plaster, called Salgesso, from the gypsum that was generated during the salt production, and its use viability on the civil construction industry in order to create environmental and economical benefits. For characterization, the following experiments were performed: X-ray Fluorescence (XRF), X-ray Diffraction (XRD), thermal analysis (TG/DTG) and Scanning Electron Microscopy (SEM) with EDS. The following tests were also performed to obtain the mechanical characteristics: Thinness Modulus, Unit Mass, Setting Time and Compressive Resistance. Three commercial plasters used on civil construction were taken as references. All of these tests were performed according to the current standards. It was noticed that although there were some conflicting findings between the salt and commercial plasters in all of the studied properties, the Salgesso has its values within the standard limits. However, there is the possibility to improve them by doing a more effective calcination process. Three commercial plasters, used in construction, were used as reference material. All tests were performed according to standards in force. It was observed that although some tests present conflicting findings between the salt and gypsum plasters commercial properties in all of the studied Salgesso have values within the limits imposed by the standard, but can be improved simply by calcination process more effective
Resumo:
The oily sludge is a complex mix of hydrocarbons, organic impurities, inorganic and water. One of the major problems currently found in petroleum industry is management (packaging, storage, transport and fate) of waste. The nanomaterials (catalysts) mesoporous and microporous are considered promising for refining and adsorbents process for environment protection. The aim of this work was to study the oily sludge from primary processing (raw and treated) and vacuum residue, with application of thermal analyses technique (pyrolysis), thermal and catalytic pyrolysis with nanomaterials, aiming at production petroleum derived. The sludge and vacuum residue were analyzed using a soxhlet extraction system, elemental analysis, thin layer chromatography, thermogravimetry and pyrolysis coupled in gas chromatography/mass spectrometry (Py GC MS). The catalysts AlMCM-41, AlSBA-15.1 e AlSBA-15.2 were synthesized with molar ratio silicon aluminum of 50 (Si/Al = 50), using tetraethylorthosilicante as source of silicon and pseudobuhemita (AlOOH) as source of aluminum. The analyzes of the catalysts indicate that materials showed hexagonal structure and surface area (783,6 m2/g for AlMCM-41, 600 m2/g for AlSBA-15.1, 377 m2/g for AlSBA-15.2). The extracted oily sludge showed a range 65 to 95% for organic components (oil), 5 to 35% for inorganic components (salts and oxides) and compositions different of derivatives. The AlSBA-15 catalysts showed better performance in analyzes for production petroleum derived, 20% increase in production of kerosene and light gas oil. The energy potential of sludge was high and it can be used as fuel in other cargo processed in refinery
Resumo:
A waste sort is a process of hand-sorting onsite waste in order to quantify the amount and type of solid waste generated by businesses, organizations and municipalities to determine how much waste is ultimately ending up in the landfill. Data from waste sort events assists in identifying current waste practices and the feasibility of implementing commodity specific waste reduction, recycling and education programs.
Resumo:
The “Compass E-Newsletter” is published quarterly by the South Carolina Department of Health and Environmental Control and is compiled by the Office of Solid Waste Reduction and Recycling to provide environmental information from the agency.
Resumo:
The “Compass E-Newsletter” is published quarterly by the South Carolina Department of Health and Environmental Control and is compiled by the Office of Solid Waste Reduction and Recycling to provide environmental information from the agency.
Resumo:
The “Compass E-Newsletter” is published quarterly by the South Carolina Department of Health and Environmental Control and is compiled by the Office of Solid Waste Reduction and Recycling to provide environmental information from the agency.
Resumo:
The “Compass E-Newsletter” is published quarterly by the South Carolina Department of Health and Environmental Control and is compiled by the Office of Solid Waste Reduction and Recycling to provide environmental information from the agency.
Resumo:
The “Compass E-Newsletter” is published quarterly by the South Carolina Department of Health and Environmental Control and is compiled by the Office of Solid Waste Reduction and Recycling to provide environmental information from the agency.
Resumo:
The “Compass E-Newsletter” is published quarterly by the South Carolina Department of Health and Environmental Control and is compiled by the Office of Solid Waste Reduction and Recycling to provide environmental information from the agency.
Resumo:
The “Compass E-Newsletter” is published quarterly by the South Carolina Department of Health and Environmental Control and is compiled by the Office of Solid Waste Reduction and Recycling to provide environmental information from the agency.
Resumo:
The “Compass E-Newsletter” is published quarterly by the South Carolina Department of Health and Environmental Control and is compiled by the Office of Solid Waste Reduction and Recycling to provide environmental information from the agency.
Resumo:
The “Compass E-Newsletter” is published quarterly by the South Carolina Department of Health and Environmental Control and is compiled by the Office of Solid Waste Reduction and Recycling to provide environmental information from the agency.
Resumo:
The “Compass E-Newsletter” is published quarterly by the South Carolina Department of Health and Environmental Control and is compiled by the Office of Solid Waste Reduction and Recycling to provide environmental information from the agency.
Resumo:
The “Compass E-Newsletter” is published quarterly by the South Carolina Department of Health and Environmental Control and is compiled by the Office of Solid Waste Reduction and Recycling to provide environmental information from the agency.
