Search results

… risks of used motor oil, particularly used oil burned for energy where lead emissions are often of concern. 1 Why oils … of used oils in this context are: contaminant content, energy value and hydrocarbon properties. 7. Used oil, as … low environmental risks because of their combustion efficiency, use of consistent quality fuel, and in some cases …

… challenges for policy- makers. Transport, housing, energy and The world population is steadily increasing, … to look for production methods which save resources, energy and time. Although generally consid- ered positive, … new prod- ucts offer higher performance or greater energy efficiency, for in- stance, a change may reduce the overall …

… of these metals has the greatest positive impact (eco-efficiency) at this time. As much as 95 % of the materials in a mobile phone can be recycled or recovered as energy. The remainder can be used in inert construction … in the metal-recycling rate increases also the material efficiency. Reuse, refurbishment and recycling contributes …

… these batteries are in motorized vehicles, for storage of energy generated by photovoltaic cells and wind turbines, and … (UNEP, 2004). The growth in the use of renewable energy sources and the concomitant need for storage … exhausted through an emission control device and/or a high‐efficiency particulate air (HEPA) filter to trap particles …