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- W3007442884 abstract "Sulfur removal from crude sulfated turpentine (CST) is a major requirement of chemical industry as sulfur deactivates the catalyst used in catalytic conversion of CST thus lowering the overall productivity. Even the minute amount of sulfur also affects the acceptance of final product such as camphor, varnishes, flavor and fragrances, making the desulfurization step very important. The current work investigates oxidative desulfurization of CST using peracetic acid (PAA), adsorptive desulfurization using commercial granulated activated carbon (AC) and a combination approach of oxidative–adsorptive desulfurization. For oxidative treatment, effect of concentration of PAA (12%–36%), quantity of PAA addition (3%–36%), time of treatment, and stage wise addition of PAA has been investigated. For adsorptive desulfurization, five commercially available ACs have been used for comparing the efficacy along with developing understanding into effect of operating parameters. Under optimized treatment conditions of 24% as PAA concentration and quantity, the sulfur reduction of 73.8% was obtained in 3 h. Sulfur reduction to below 5 ppm was achieved using adsorptive approach at optimized conditions of 2 mL/min as flow rate of the CST, 16 cycles, 20 h as treatment time using China 1000 AC. Kinetic analysis revealed that adsorptive desulfurization followed pseudo second order kinetics. The ultra-deep desulfurization of CST with final value below 5 ppm was achieved successfully in an intensified manner with combination method in only 8.3 h at an addition of 24% PAA and bed height of 50 cm at a flow rate of 2 mL/min at ambient temperature. Use of combination approach demonstrated significant intensification in the processing which is very useful for enhancing the production rates." @default.
- W3007442884 created "2020-03-06" @default.
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- W3007442884 date "2020-05-01" @default.
- W3007442884 modified "2023-10-11" @default.
- W3007442884 title "Ultra-deep desulfurization of crude sulfated turpentine using oxidation, adsorption and novel combination approach" @default.
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- W3007442884 doi "https://doi.org/10.1016/j.eti.2020.100682" @default.
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