waste load
51coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …
52metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… …
53Cost of electricity by source — The cost of electricity generated by different sources measures the cost of generating electricity including initial capital, return on investment, as well as the costs of continuous operation, fuel, and maintenance. The price is normally… …
54Curbside collection — Kerbside collection in Canberra, Australia Curbside collection, or kerbside collection is a service provided to households, typically in urban and suburban areas, of removing household waste. It is usually accomplished by personnel using purpose… …
55Landfill — For other uses, see Landfill (disambiguation). Garbage Dump redirects here. For the 1994 rock album, see Garbage Dump. A landfill in Poland A landfill site (also known as tip, dump or rubbish dump and historically as a midden), is a site for the… …
56Fuel cell — For other uses, see Fuel cell (disambiguation). Demonstration model of a direct methanol fuel cell. The actual fuel cell stack is the layered cube shape in the center of the image A fuel cell is a device that converts the chemical energy from a… …
57Combined cycle — Thermodynamics …
58Alkaline battery — Alkaline batteries are a type of disposable battery dependent upon the reaction between zinc and manganese (IV) oxide (Zn/MnO2).Compared with zinc carbon batteries of the Leclanché or zinc chloride types, while all produce approximately 1.5 volts …
59Water supply and sanitation in Portugal — is characterized by important advances in access to services, technologies and service quality over past decades (1980s ndash;1990s), partially achieved thanks to important funds from the European Union. Nevertheless, sanitation still remains… …
60Leather — For other uses, see Leather (disambiguation). Modern leather working tools Leather is a durable and flexible material created via the tanning of putrescible animal rawhide and skin, primarily cattlehide. It can be produced through different… …
