LECTURERS PAPER (CE)Collections of Chemical Engineering Lecturers' Paperhttps://library.universitaspertamina.ac.id//xmlui/handle/123456789/1092024-03-29T08:29:08Z2024-03-29T08:29:08ZSintesis Dan Karakterisasi MgS-RgO Untuk Aplikasi Superkapasitor Dengan Metode HydrothermalRedondo, Ayup Riyanhttps://library.universitaspertamina.ac.id//xmlui/handle/123456789/114212024-03-19T12:55:00Z2024-02-29T00:00:00ZSintesis Dan Karakterisasi MgS-RgO Untuk Aplikasi Superkapasitor Dengan Metode Hydrothermal
Redondo, Ayup Riyan
The addition of Magnesium Oxide (MgO) metal and also Sulfur (S) as doping
materials to reduce Graphene Oxide using the hydrothermal method described in
this research. Synthesis of Graphite into Graphene Oxide was carried out based on
Hummer's method and MgS-rGO Synthesis used the Hydrothermal method. The
characteristics of MgS-rGO were analyzed using Fourier Transform Infrared
(FTIR), Raman Spectroscopy and SEM-EDX. The addition of MgO and S shows
an increase in amorphous structure and the addition of chemical bonding functional
groups. On the other hand, an electrochemical test was carried out in the form of
Cyclic Voltammetry (CV). The addition of Mg and S can increase the specific
capacitance value of rGO. CV results show the capacitance of GO and rGO is 0.028
F/g and 0.035 F/g. After being doped with MgS-rGO with a ratio of 1:4 v/v, the
specific capacitance increased by 12,212 F/g.
2024-02-29T00:00:00ZPRELIMINARY DESIGN OF ISOPROPANOL PLANT BASED ON NAPHTHA CRACKING PROPYLENE WITH A CAPACITY OF 50,000 TON/YEARRedondo, Ayup Riyanhttps://library.universitaspertamina.ac.id//xmlui/handle/123456789/113442024-03-17T15:20:20Z2022-01-19T00:00:00ZPRELIMINARY DESIGN OF ISOPROPANOL PLANT BASED ON NAPHTHA CRACKING PROPYLENE WITH A CAPACITY OF 50,000 TON/YEAR
Redondo, Ayup Riyan
Isopropanol (IPA) is commonly used as an ingredient in the production of acetone or as a final
product in the form of cleaning products such as disinfectants. This plant is planned to be established
in Cilegon, Banten, in 2024 with a land area of 22197 m2. The isopropanol production capacity in
this plant is 50000 tons/year which operates continuously for 330 days in one year. The raw materials
used in the isopropanol production process are propylene and water with the help of a catalyst in the
form of Amberlyst DT. The type of reactor used is a trickle bed reactor with a conversion of 75%
and the reaction takes place at a temperature of 120 °C and a pressure of 80 atm non-adiabatic and
non-isothermal. The reaction is exothermic and the temperature is maintained so that cooling water
is used. The utility unit required in the form of water obtained from the Cipasauran river is 156435.5
kg/hour and electricity need of 510.78 kW. The management of this plant is a Limited Liability
Company (PT) with a total workforce requirement of 294 people. The working capital required is Rp
684,653,946,613.9. The economic prospect of this plant design is with Pay out Time during the year
1.36, Rate of Investment of 73.49 %, Breakeven of 19.57 %, Shutdown Point of 10.92 % of
production capacity and Discounted Cash Flow of 19.96 %. From this economic review, it can be
concluded that the pre-designed Isopropanol plant with a capacity of 50000 tons/year is feasible to
build.
2022-01-19T00:00:00Z