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Waste Management In Petroleum Refinery Spent Catalyst

Sulaiman, Shafiq (2011) Waste Management In Petroleum Refinery Spent Catalyst. Universiti Teknologi Petronas. (Unpublished)

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Abstract

Solid catalysts containing metals, metal oxides or sulfides supported on an alumina carrier, which play a key role in the refining of petroleum to clean fuels and many other valuable products, become solid wastes after use. In many refineries, the spent catalysts discarded from hydro processing units form a major part of these solid wastes. Disposal of spent hydro processing catalysts requires compliance with stringent environmental regulations because of their hazardous nature and toxic chemicals content. Various options such as minimizing spent catalyst waste generation by regeneration and reuse, metals recovery, utilization to produce useful materials and treatment for safe disposal, could be considered to deal with the spent catalyst enviromnental problem. In the present work, attention was focused on the recovery of alumina as aluminium trihydroxide from spent Nil Al203 catalyst. More than 93% recovery of alumina in the form of aluminium trihydroxide was achieved using the dry roasting method. Alumina reacted with NaOH forming sodium aluminate from which aluminium trihydroxide was precipitated. The effect of temperature with constant I :3 mole ratio to the amount of aluminium trihydroxide recovered was studied.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Materials - Engineering materials - Metals alloys - Fabrication
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Users 2053 not found.
Date Deposited: 06 Sep 2013 12:38
Last Modified: 25 Jan 2017 09:42
URI: http://utpedia.utp.edu.my/id/eprint/6722

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