Domestic Utilization of Coal in Zonguldak-Turkey and Unburned Carbon in Ash

Abstract

In this study, Zonguldak, a Turkish city popular with coal mining, was taken into consideration. Coal was the main source of energy for domestic heating in Zonguldak and tonnes of ash were dumped to environment. The ash samples were containing carbon and this carbon was aimed to recycle from these waste. In the order of this recycling, firstly classification of collected ash samples in terms of size groups was carried out. For each size groups sink and float analysis was carried out. Sink and float analysis was carried out with densities (1.30, 1.45, 1.60, 1.90 g/cm3) for a total of 5 size groups of ash (+18.00mm, -18.00+10.00mm, -10.00+6.00mm, - 6.00+2.36mm, -2.36+0.50mm) and each floated product was analysed in terms of final ash percentage. Size group -18+10 mm was floated at 1.30 g/cm3 and it was observed that this group of coal ash has the highest percentage (%58.84) carbon.

Impacts of coal-fired power plants for energy generation on environment and future implications of energy policy for Turkey

“…As reported to have exceeded the threshold limits in the leachate of fly ash storage area even when the storage area was reported to be “a relatively new area” (Baba et al 2008 ). As and Se in coal ashes were reported to have a higher leachability in several studies (Baba et al 2008 , 2010 ; Bilen and Yılmaz 2019 ). The leachability of heavy metals in fly ash, however, also depends on several factors such as the temperature of the water, pH, and presence of limestone (Baba et al 2010 ).…”