Browsing by Author "Alhamid, Muhammad Idrus"
Now showing 1 - 4 of 4
Results Per Page
Sort Options
Item Adsorpsi Isosterik CO2 Bertekanan Tinggi Pada Karbon Aktif dengan Persamaan Model Tóth(wahyu sari yeni, 2019-07-01) Martin, Awaludin; Suryawan, Bambang; Alhamid, Muhammad Idrus; Nasruddin, NasruddinHigh Pressure Adsorption Iisosteric CO2 on Activated Carbon by Tóth Equation Model. Adsorption Isostere Carbon dioxide (CO2) on Activated Carbon were found using Tóth equation model, cause the Tóth equation model have lower deviation value than Langmuir equation model. Adsorption isostere data will be use to predict the value of pressure and isotherm of temperature for adsorb the amount of CO2. In this research the maximum adsorption isostere CO2 on activated carbon is 35% from mass of activated carbon.Item Adsorpsi Isotermal Co2 Bertekanan Tinggi Pada Karbon Aktif Dengan Metoda Volumetrik(wahyu sari yeni, 2019-07-01) Martin, Awaludin; Suryawan, Bambang; Alhamid, Muhammad Idrus; Nasruddin, NasruddinSistem adsorpsi adalah salah satu cara atau metoda yang paling efektif untuk memisahkan CO2 dengan zat lainnya yang dihasilkan dari pembakaran bahan bakar fosil. Pada rancangan untuk aplikasi tersebut, disamping data karakteristik material berpori (adsorben), data penyerapan CO2 pada adsorben (kinetik dan thermodinamika) juga dibutuhkan. Penelitian ini bertujuan menghasilkan data adsorpsi isotermal pada tekanan sampai dengan 3,5 MPa dengan menggunakan metoda tak langsung (metoda volumetrik) pada temperatur isotermal 300, 308, 318 dan 338 K. Adsorben yang digunakan adalah karbon aktif berbahan dasar batubara Kalimantan Timur yang diproduksi dengan menggunakan metode aktivasi fisika (CO2) derngan luas permukaan karbon aktif (karbon aktif KT) adalah 668 m2/g dan volume porinya 0,47 mL/g. Karbon dioksida (CO2) yang digunakan adalah karbon dioksida high purity dengan kemurnian 99,9%. Data yang diperoleh dari hasil eksperimen kemudian dikorelasi dengan menggunakan model persamaan Langmuir dan Toth. Hasil penelitian menunjukkan bahwa Kapasitas penyerapan maksimum adalah 0,314 kg/kg pada temperatur 300 K dan tekanan equilibrium 3384,69 kPa. Hasil regresi data eksperimen dengan menggunakan model Langmuir dan Toth adalah 3,4% dan 1,7%.Item Adsorption Isotherms of Hydrogen on Granular Activated Carbon Derived From Coal and Derived From Coconut Shell(wahyu sari yeni, 2019-07-01) Nasruddin, Nasruddin; Martin, Awaludin; Alhamid, Muhammad Idrus; Tampubolon, DanielThe development of adsorption-based storage systems requires a basic understanding of the isotherms over a wide range of pressure and temperatures for various types of adsorbents. This research is to generate experimental isothermal adsorption data for the adsorption of hydrogen gas on activated carbon. The adsorption apparatus is based on a volumetric method, and the experiments were conducted at temperatures ranging from 273 to 308 K and pressures up to 4 MPa. Two types of activated carbon, (i) a granular coal from Indonesia and (ii) a coconut-shell activated carbon that is produced in the laboratory, were used in the experiments. The experimental data are analyzed using the Langmuir, Toth, and Langmuir–Freundlich isotherm modelsItem High-Pressure Adsorption Isotherms of Carbon Dioxide and Methane on Activated Carbon From Low-Grade Coal of Indonesia(wahyu sari yeni, 2019-07-01) Martin, Awaludin; Alhamid, Muhammad Idrus; Nasruddin, Nasruddin; Suryawan, Bambang; Loh, Wai Soong; Ismail, Azhar Bin; Chun, Wongee; Choon, KimAdsorption isotherms data of methane and carbon dioxide gases on the activated carbons were measured experimentally using a volumetric method with pressure and temperatures ranging from 0 to 3.5 MPa and 27 to 65°C, respectively. Two types of activated carbons, namely, (1) Kalimantan Timur type activated carbon, which is lab-produced from Indonesian low-grade coal and (2) a commercial (Carbotech) activated carbon were used. The adsorption isotherms obtained were found to belong to type 1 of the International Union of Pure and Applied Chemistry classification. The adsorption uptakes for both carbon dioxide and methane on commercial activated carbon are higher than for the Kalimantan Timur activated carbon. This is due to higher Brunauer–Emmet–Teller surface area and pore volume of the former. Langmuir and Tóth isotherm models are correlated to predict the experimental data with acceptable accuracy.