Ahụike na mmetụta gburugburu ebe obibi nke ụlọ ọrụ coal
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Mmetụta ahụike na gburugburu ebe obibi nke ụlọ ọrụ coal na-agụnye ihe ndị dị ka iji ala eme ihe, nchịkwa mkpofu, mmiri na ikuku ikuku, nke sitere na ngwuputa coal, nhazi na iji ngwaahịa ya. Na mgbakwunye na mmetọ ikuku, ọkụ coal na-emepụta ọtụtụ narị nde tọn ihe mkpofu siri ike kwa afọ, gụnyere ntụ ijiji, ash nke ala, na sludge flue-gas desulfurization, nke nwere mercury, uranium, thorium, arsenic, na ọla ndị ọzọ dị arọ. Coal bụ ihe kacha enye aka na mmụba carbon dioxide nke mmadụ mere na ikuku ụwa.
Enwere mmetụta ahụike siri ike nke ọkụ na-ere ọkụ na-akpata. Dị ka akụkọ sitere n'aka Òtù Ahụ Ike Ụwa na 2008, a na-eme atụmatụ mmetọ coal ga-ebelata ihe dị ka ndụ 10,000 kwa afọ n'ụwa nile. Nnyocha e mere n'afọ 2004 nke òtù gburugburu ebe obibi nyere ikike, mana nke United States Environmental Protection Agency kwadoro, kwubiri na ọkụ ọkụ na-efu mmadụ 24,000 ndụ kwa afọ na United States. N’oge na-adịbeghị anya, nnyocha e mere n’agụmakwụkwọ mere atụmatụ na ọnwụ akabeghị aka site na mmetọ ikuku metụtara coal dị ihe dị ka 52,000. Ọ bụrụ na atụnyere ọkụ eletrik nke sitere na gas sitere n'okike site na mgbawa hydraulic, ọkụ eletrik na-egbu egbu karịa ugboro 10-100, nke ka ukwuu n'ihi oke ihe na-esi na ya pụta n'oge ọkụ. Mgbe a na-atụnyere coal na ọgbọ fotovoltaic nke anyanwụ, nke ikpeazụ nwere ike ịzọpụta ndụ 51,999 America kwa afọ ma ọ bụrụ na anyanwụ ga-eji dochie anya ike nke sitere na coal na U.S. ọnwụ akaghi aka site na mmetọ coal maka ọrụ ọ bụla fọdụrụ na ngwuputa coal.
Na mgbakwunye, ndepụta nke ọdachi ndị na-egwupụta coal dị ogologo, ọ bụ ezie na ọnwụ coal metụtara ọrụ agbadala nke ukwuu ka ewepụtara usoro nchekwa yana ngwuputa ala dị n'okpuru enyela òkè ahịa na-egwupụta n'elu ala. Ihe egwu egwu egwu n'ime ala gụnyere ntachi, nsị gas, ndakpọ ụlọ na mgbawa gas. Ihe ize ndụ mwepu mepere emepe bụ ọdịda mgbidi m na ndakpọ ụgbọ ala. Na United States, nkezi nke ndị na-egwu kol 26 kwa afọ nwụrụ n'ime afọ iri 2005-2014.