SULFIDE REMOVAL FROM SPENT CAUSTIC USING ADVANCED OXIDATION PROCESS METHOD BASED ON UV, OZON AND HIDROGEN PEROXIDE
Spent caustic is a wastewater that comes from crude oil processing and contains high level of sulfide, merkaptan, and COD. This waste is a by-product of the sweetening process, which is a process that aims to reduce the sulfur content in crude oil so that it can produce products such as gasoline,...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/68893 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Spent caustic is a wastewater that comes from crude oil processing and contains high
level of sulfide, merkaptan, and COD. This waste is a by-product of the sweetening
process, which is a process that aims to reduce the sulfur content in crude oil so that
it can produce products such as gasoline, kerosene, with better quality. Spent caustic
has a pungent smell, can threaten human health and industrial production processes,
especially pipelines because of the sulfide content in it. Moreover, high level of COD
could disrupt the aquatic environment. Therefore, treatment is needed to remove most
of the pollutants. Advanced oxidation process (AOP) is a processing method that is
often used to treat spent caustic. In this research, UV, Ozon (O3), and Hydrogen
Peroxide (H2O2) and their combination will be used to achieve the best treatment of
spent caustic. Advanced oxidation process or AOP is a wastewater treatment
technology that has the principle of utilizing hydroxyl radicals (HO•). Hydroxyl
radicals are highly reactive compounds, so hydroxyl radicals will react with several
types of organic compounds to produce simpler compounds. Hydroxyl radicals can
be generated by combining two or more oxidizing agents and by adding a catalyst to
the oxidizing agent. In this study, AOP experiments will be carried out with a
combination of UV, O3, UV/O3, H2O2, H2O2/ O3, dan UV/ H2O2/ O3. The efficiency for
sulfide removal are 12,7% (UV), 98,99% (O3), 99,8% (UV/O3), 99,9% (H2O2), dan
100% (H2O2/ O3 dan UV/H2O2/ O3). In the other hand, the COD removal efficiency
that can be achieved are 11,5% (UV), 62% (O3), 65% (UV/O3), 84,3% (H2O2), dan
85,7% (H2O2/ O3), dan 86,2% (UV/H2O2/ O3).
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