124 Articles found

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  • Reclamation of a mine contaminated soil using biologically reactive organic matrices

    Reclamation of a mine contaminated soil using biologically reactive organic matrices

    Organic residues such as sewage sludge, biowastes and composts are increasingly used in land rehabilitation because they can improve the physical, chemical and biochemical properties of soil, and reduce the need for inorganic fertilization. ...

    Paula Alvarenga, Ana Paula Gonçalves, Rosa Maria Fernandes, Amarillas de Varennes, Elizabeth Duarte, Ana Cristina Cunha-Queda, Giovanni Vallini

  • Fertilization of pinus pinea L. seedlings with a sewage sludge-based compost

    Fertilization of pinus pinea L. seedlings with a sewage sludge-based compost

    Two experiments were conducted to evaluate the effect of a sewage sludge-based compost (SSC) on the growth and mineral composition of containerized Pinus pinea L. seedlings. In the first experiment, five different substrates were tested: four binary ...

    Henrique M. Ribeiro, Ernesto Vasconcelos, Fernanda Cabral, Dina Ribeiro

  • Rotary drum composting of different organic waste mixtures

    Rotary drum composting of different organic waste mixtures

    The effects of three different mixtures of organic waste on composting in a rotary drum were examined by measuring changes in physico-chemical and biological parameters. It was observed that the time courses of the three mixtures: run A (grass ...

    Ajay S. Kalamdhad, Absar A. Kazmi

  • A laboratory-scale comparison of compost and sand—compost—perlite as methane-oxidizing biofilter media

    A laboratory-scale comparison of compost and sand—compost—perlite as methane-oxidizing biofilter media

    Municipal solid waste landfills produce methane, a potent greenhouse gas. A treatment approach is to passively vent landfill gas through a methane-oxidizing biofilter medium, a porous substrate that facilitates the growth of methanotrophic bacteria. ...

    Daryl McCartney, Andrew Philopoulos, Juliane Ruck, Christian Felske

  • Indicators to assess the recovery of natural resources contained in demolition waste

    Indicators to assess the recovery of natural resources contained in demolition waste

    Demolition waste materials are one of the major industrial waste deposits in many countries and represent an important quantity of potential resources that are not exploited, because the major part of these wastes go to landfill. Indeed, recycling ...

    Nicolas Roussat, Jacques Méhu, Christiane Dujet

  • On the prevailing construction waste recycling practices

    On the prevailing construction waste recycling practices

    Waste generated from construction and building demolition work constitutes about 68% of all solid waste generated each year in South East Queensland. Consequently, it has created a serious waste management problem. The State Governments of Victoria ...

    Vivian W.Y. Tam, Duangthidar Kotrayothar, Yew-Chaye Loo

  • Recycling of plastic waste by density separation: Prospects for optimization

    Recycling of plastic waste by density separation: Prospects for optimization

    A review of existing industrial processing and results of alternative processing investigations for separating solid mixtures and specifically recycling plastic waste by density separation is presented. Media density separation is shown to be ...

    Malcolm Richard Gent, Mario Menendez, Javier Toraño, Isidro Diego

  • Incentive regulation and performance measurement of the Portuguese solid waste management services

    Incentive regulation and performance measurement of the Portuguese solid waste management services

    Measuring the performance of solid waste management services usually uncovers very high potential for gains in efficiency and productivity. This circumstance occurs, naturally, due to the fact that these services are outside the market and because ...

    Rui Cunha Marques, Pedro Simões

  • Use of stratified cluster sampling for efficient estimation of solid waste generation at household level

    Use of stratified cluster sampling for efficient estimation of solid waste generation at household level

    Relatively few studies have been performed to characterize municipal solid waste (MSW) at household level. This is due in part to the difficulties involved with collecting the data and selecting an appropriate statistical sample size. The previous ...

    Mohan B. Dangi, Michael A. Urynowicz, Kenneth G. Gerow, Resham B. Thapa

  • Impact of heavy metals on the oil products biodegradation process

    Impact of heavy metals on the oil products biodegradation process

    Oil products continue to be used as a principal source of energy. Wide-scale production, transport, global use and disposal of petroleum have made them major contaminants in prevalence and quantity in the environment. In accidental spills, actions ...

    Zaneta Stasiskiene, Audrone Zukauskaite, Viktorija Jakubauskaite, Olga Belous and Dalia Ambrazaitiene

  • Unit pricing of household garbage in Melbourne: improving welfare, reducing garbage, or neither?

    Unit pricing of household garbage in Melbourne: improving welfare, reducing garbage, or neither?

    Charging for household garbage collection per unit of waste is becoming more popular. Discussions in the practical literature focus on unit pricing as a way to encourage diversion to recycling and reduction in waste, but the economics literature ...

    Joe Pickin

  • Immobilization of organic pollutants in cement pastes admixed with organophilic materials

    Immobilization of organic pollutants in cement pastes admixed with organophilic materials

    The results of 2-chloroaniline (2-CA) immobilization experiments in cement matrices, using an organophilic clay modified with phenolic resins as pre-sorbent, are shown. The 2-CA suspended in water was kept in contact with the organoclay for 24 h, ...

    Giovanni Dotelli, Paolo Gallo Stampino and Luca Zampori

  • Wind erosion of waste impoundments in arid climates and mitigation of dust pollution

    Wind erosion of waste impoundments in arid climates and mitigation of dust pollution

    Wind can erode and disperse fine-grained material from an impoundment of mining, industrial or municipal waste that stands above the level of its surroundings. Such dust dispersion can be a serious nuisance as well as a health hazard to inhabitants ...

    G.E. Blight

  • Emission of volatile organic compounds from solid waste disposal sites

    Emission of volatile organic compounds from solid waste disposal sites

    The emission of volatile organic compounds (VOCs) from a solid waste disposal site for municipal solid wastes was quantified. The VOCs contained in the landfill gas taken at the site were benzene, toluene, xylenes, ethyl benzenes, and trimethyl ...

    Taro Urase, Hiroyuki Okumura, Samerjai Panyosaranya, Akihiro Inamura

  • Investigation on the spontaneous combustion of refuse-derived fuels

    Investigation on the spontaneous combustion of refuse-derived fuels

    Refuse-derived fuel (RDF), a high-caloric material, is used by various combustion processes, such as power plants, as alternative fuel. Several explosion accidents, however, possibly initiated by the spontaneous combustion of stored RDF, have been ...

    Takayuki Shibamoto, Atsushi Matunaga, Akio Yasuhara, Yoshitada Shimizu and Masahide Wakakura

  • The effectiveness of Hong Kong`s Construction Waste Disposal Charging Scheme

    The effectiveness of Hong Kong`s Construction Waste Disposal Charging Scheme

    The Hong Kong Government introduced the Construction Waste Disposal Charging Scheme in December 2005 to ensure that disposal of construction and demolition (C&D) waste is properly priced to reduce such waste. The charging scheme is not only ...

    Vivian W. Y. Tam, Jane L. Hao, Martin J. Hills

  • A laboratory study on stabilization criteria of semi-aerobic landfill

    A laboratory study on stabilization criteria of semi-aerobic landfill

    The semi-aerobic landfill has been widely used as a sustainable landfill technology. However, the stabilization indicator system and stabilization criteria of semi-aerobic landfill have not been developed yet. In this study, the stabilization ...

    Ping Tang, Youcai Zhao and Dan Liu

  • Is England`s Warm Front Programme Going to Improve the Country`s Health?

    Is England`s Warm Front Programme Going to Improve the Country`s Health?

    There have been a number of initiatives in the UK to increase the energy efficiency of homes by offering improvements to thermal performance through grant schemes. Although the outcomes of these schemes are often linked to health, inherent problems ...

    George Richardson

  • Immobilization of copper flotation waste using red mud and clinoptilolite

    Immobilization of copper flotation waste using red mud and clinoptilolite

    The flash smelting process has been used in the copper industry for a number of years and has replaced most of the reverberatory applications, known as conventional copper smelting processes. Copper smelters produce large amounts of copper slag or ...

    Semra Çoruh

  • Radon Levels in Dwellings of New Mirpur Azad Kashmir, Sub-Himalayas, Pakistan

    Radon Levels in Dwellings of New Mirpur Azad Kashmir, Sub-Himalayas, Pakistan

    Radon concentrations were measured in kucha, semi-kucha and pucka houses located on the sedimentary rocks of Early Pleistocene-Pliocene Soan Formation, Pleistocene Mirpur conglomerate and recent deposits. The radon concentration was measured using ...

    Arshid Iqbal, Mirza Shahid Baig, Muhammad Akram, Asma Kazmi, Sobia Saleem, Abdul Aziz Qureshi