Ottimizzazione di nanovernici con sensazione tattile metallica per componenti polimerici

Ottimizzazione e caratterizzazione termica ed elettrica di nanovernici contenenti nanotubi di carbonio e nano-Fe3O4

Effects Of Wastewater Applıcatıon On Soıl Propertıes

Bu çalışmanın amacı atıksu uygulamasının kum-kil karışımlarının bazı geoteknik özellikleri üzerine etkilerini belirlemektir. Bu çalışmada kullanılan atıksu Gaziantep GASKI Fabrikasından (GGF) alinmistir. Standart kompaksiyon, Serbest Basınç Dayanımı (SBD), kivam limitleri ve geçirgenlik testleri kum-kil karışımlarına uygulandı. Kum taneleri killi zeminin icine kuru ağırlıkca %10, %20, %30, %50 ve %70 oranında ilave edildi. İlk olarak optimum su içeriği (OSI) ve en maksimum kuru yoğunluk (MKY) bulundu ve diğer deneyler bu değerler kullanılarak gerçekleştirilmiştir. Atıksu ile doyurulmuş kum-kil karışımları ile askıda katı madde (KM), biyolojik oksijen ihtiyacı (BOI), hidrojen gücü (HG) ve kimyasal oksijen ihtiyacı (KOI) deneyleri gerçekleştirildi. Elde edilen sonuçlara göre, kum oranı arttıkça, atıksuyun temizlenmesinin verimliliği azalmış ve atıksuyun geçirgenlik arttırıldı

An assessment of the potential for waste minimisation in small and medium size enterprises in South Africa

Against a background of a chemical engineering degree and a few years of industrial experience, I undertook this M.Sc. degree with the conviction that chemical engineering skills have a unique role to play in addressing environmental problems of pollution generated by industrial activity. Moreover, given that, of industrial activity, it is chemical processing industries (CPI) and mining industries which are the major contributors to generation of waste, hazardous waste in particular, it is appropriate that the chemical engineering profession, which populates such industry activities, should assume such responsibility. In response to increasingly vociferous demands for more stringent environmental control over industrial activity, and regulatory compliance with stricter constraints on emissions of pollutants, there is a tendency to rely on readily available end-of-pipe solutions to resolve environmental management problems. This strategy is embodied in current practices in South Africa at effluent treatment- and landfill disposal facilities. Yet this is a costly solution in the long term, with implications for increasing operating costs, investment costs for development of new facilities, as well as closure and potential liability costs for old facilities. Furthermore, this strategy fails to address problems of resource depletion and the potential for resource recovery from materials considered to be "waste". Waste minimisation offers an alternative waste management strategy which seeks to reduce the generation of waste before end-of-pipe management is required, and to recover resources for reuse, thereby reducing resource consumption. The Department of Environment Affairs in the South African government has recommended that there should be research in the application of waste minimisation. While clearly there is a need for fundamental research into particular technological problems (such research is being undertaken at some institutions), the approach I adopted was to investigate potential for effecting meaningful waste minimisation solutions using procedures and techniques which constitute popular waste minimisation assessment methodologies. I focused specifically on small and medium scale industry operators which traditionally do not employ chemical engineering skills and which need a practical tool to improve in-house environmental management capability

Energy efficient drill cuttings treatment plant designed by Norwegian-Group AS A feasibility study

Masters Thesis in Environmental technologyThe cuttings produced by the oil and gas industry must be handled according to legislations. According to OSPAR, drill cuttings should contain less than 1 percent oil by weigh before discharged. There is several cuttings waste handling options. Treating the drill cuttings offshore is considered economically favorable. Some offshore treatment technologies are able to meet the legislation requirements. Norwegian-Group AS provides a treatment plant concept intended for treating cuttings offshore. The treatment plant is based on three separation technologies. The first separation stage is a steam assisted cuttings dryer. The cuttings are then transported to the thermal separation. The thermal separation chamber is fitted with steam assistance combined with a heat source. Oil and water vapor from the cuttings dryer and thermal separation chamber is separated by a membrane. Clean steam is recirculated and reused. This thesis evaluates the following topics. Potential steam supply systems for the cuttings dryer. Potential heat sources that can be combined with steam assistance in the thermal separation chamber. The feasibility of separating oil and water by membranes to reduce the energy consumption and cuttings handling cost. Potential advantages and limitations that the treatment plant may feature. Increased the separation degree by utilizing steam in combination with the cuttings dryer is considered feasible. The recommended heat source to be combined with steam in the thermal separation chamber is microwave radiation due to its energy efficiency and unique ability to desorb capillary bond water and oil. On the other hand, the idea of using a membrane to reduce the energy consumption and cuttings handling costs is considered not attractive. As it cannot satisfy the aim of cost reduction. The treatment plant may serve great advantages over the current cuttings handling options suited for offshore treatment. The potential advantages are related to treatment capacity, energy consumption and handling costs. Potential limitations are related to reaching the legislation of various cuttings characteristics

Otimização de nanotinta com toque metálico para componentes poliméricos da indústria automóvel

Mestrado em Engenharia MecânicaThe traditional chrome plating is a process that gives prestige to car components, but it is an expensive and lengthy process that requires metal substrates. This thesis proposes an alternative to chroming process that involves the use of polymeric substrates coated with a chrome paint doped with high thermal conductivity nano-paricles, in order to obtain plastic components that give the feeling of metalic touch. In this dissertation the process of production of nanopaint adding carbon nanotubes and nano-Fe3O4 has been optimized and RGB color tests, thermal analysis and electrical analysis were performed.A cromagem de componentes para a industria automóvel é um processo que conferem prestigio aos mesmos, contudo é um processo significativamente caro, demorado e requer a adição de substratos metálicos. Esta dissertação tem como principal objetivo aumentar a sensação de toque metálico em componentes poliméricos para a industria automovél. Desta forma, propõem-se uma alternativa ao processo de cromagem, que envolve a utilização de tinta reforçada com nanopartículas de elevada condutividade térmica. Nesta dissertação, o processo de produção de nanotintas aditivadas com nanotubos de carbono e nanoparticluas de oxido de ferro foi optimizado e a nanotinta submetida a ensaios de cor RGB, análises térmicas e elétricas

Adsorption of Lubricant Waste by Porous Materials: A Review

The rapid development of technology today cannot be separated from the role of various kinds of machines to produce or increase the use value of an item. The more the engine operates, the more lubricant is used. Lubricants are included in the category of B3 waste (Toxic Hazardous Materials) so that they have a negative impact on the environment. Nearly 50% of all mineral lubricants enter the environment and cause irreparable environmental damage due to direct contact with water and soil. One of the efforts that can be done to reduce the B3 content in used lubricants is adsorption using a porous adsorbent. This study aims to see the relationship between the physical and chemical properties of the adsorbent with the physical and chemical properties of the adsorbate. This research was conducted by studying the literature of scientific articles with related topics. The results showed that some contaminants such as organic compounds, inorganic species, soot, hydrocarbons, and ash can be adsorbed with various adsorbents, namely modified sawdust, bentonite, fly ash, activated carbon, activated alumina, and zeolite Y derived from kaolin

Applied Inorganic Chemistry

Викладено загальні принципи техніки хімічних експериментів, що базуються на прикладному використанні основних положень теоретичної хімії в процесах технології неорганічних речовин, а саме, технології виробництва сірковмісної продукції, сполук зв’язаного азоту, добрив, содопродуктів, глинозему, титановміщуючих продуктів, процесів прикладної екології та водопідготовки. Призначений для поглибленого вивчення різних аспектів застосування в лабораторній практиці фундаментальних положень хімії та обґрунтування особливостей реальних рішень з майбутньої фахової діяльності. Може бути використаний студентами при підготовці до лекційних занять, контрольних робіт, до виконання студентами лабораторних та практичних робіт.General principles of the technique of chemical experiments that are based on the applied application of the basic provisions of theoretical chemistry in processes of inorganic substances technology, in particular, the technologies of production of sulfur-containing products, compounds of bound nitrogen, fertilizers, soda products, alumina, titanium-containing products, processes of applied ecology and water treatment have presented. Designed for the in-depth study of various aspects of the application in laboratory practice of the basic chemistry principles and the substantiation of the peculiarities of real solutions for future professional activities. It can be used by students in preparation for lecture classes, control works, and can perform laboratory and practical work by students