Author(s):
1. Muhammad Hamza Naeem:
Department of Chemical Engineering,UET Peshawar,Pakistan
2. Naseer Ahmed Khan:
Department of Chemical Engineering,UET Peshawar,Pakistan
3. Naveed Ul Hasan Syed:
Department of Chemical Engineering,UET Peshawar,Pakistan
Abstract:
We all know that the vehicles changes oil after a certain kilometers of travelling. Collected waste oil are valuable and ideally most of it should be regenerated. In Pakistan there are a numbers of oil cleaning businesses but unfortunately almost all are reluctant to disclose their cleaning methodology. The main reason for hiding the cleaning process is because of tough governmental regulations. Usually, after heating the waste oil for few hours sulphuric acid is added slowly to remove oxidized hydrocarbons (darkish part). The sludge generated is the main environmental hazard and because this problem this simple acid cleaning process was banned in European countries. The generated sludge contains heavy metals and many other kinds of hydrogenated viscous species. Few simple experiments were conducted to propose an alternative cleaning methodology. In short, the oil was heated till the knocking sound disappeared. After that at a room temperature the dehydrated oil was treated with the glacial acetic acid (instead of sulphuric acid) and was properly mixed for an hour. A settling time of 24 hours is provided after which reddish brownish (top) and black (bottom) layers are formed. The collected upper layer was then treated with fuller earth (Multani meti) under continuous stirring. Finally, after cooling to a room temperature the oil was filtered to a reasonably clean engine oil. This cleaning process recovers about 53.2% of the engine oil. At least theoretically the collected sludge containing acetic acid is biodegradable. The collected sludge from both types of acid treatment was mixed with cement to prepare concreate roadblocks. The bricks were hard and had sealant property
Page(s):
0-0
DOI:
DOI not available
Published:
Journal: Sixth International Conference on Sustainability in Process Industries (SPI) 19-20 Octover 2022 (Book of Abstracts), Volume: 0, Issue: 0, Year: 2022
Keywords:
acid cleaning
,
and sludge bricks
,
Used engine oil
References:
References are not available for this document.
Citations
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