Potential study of Indonesia coal for adsorbed natural gas

Abstract

Low rank coal was used as a precursor for the preparation of adsorbed natural gas by chemical activation with KOH-NaOH mixtures. Chemical activation process is commonly used and involves two major steps, which are heating process and chemical treatment process. The experiments were used in the various of temperatures, contact times, and rasio of sample and chemical compound. The result of process was obtained of the iodine number around of 1004 mg/g and 1198 mg/g . Based on the other study, the iodine number at 1004 mg/g and 1198 mg/g have surface area between 1000 mg/g up to 1200 mg/g. These surface area provide a methane capacity between 75 mg/g up to 80 mg/g. Keywords: activated carbon, adsorbed natural gas, surface area, iodine number. ABSTRAK

Pengaruh ukuran butir batubara dan komposisi batubara-ZnCl2 pada daya serap karbon aktif terhadap logam Fe, Cu dan Zn dalam limbah cair

“…Karbonisasi berlangsung pada suhu 500-600°C dilanjutkan dengan aktivasi fisika menggunakan uap air pada suhu 900°C selama 5 jam. Produk karbon aktif pada proses ini mempunyai bilangan iodin 200-688°C (Monika, 2016).…”

“…Pembuatan karbon aktif berbahan baku batubara peringkat rendah dengan aktivasi menggunakan campuran KOH-NaOH menghasilkan bilangan iodin 1004-1198 mg/g (Monika, 2016), sedangkan pembuatan karbon aktif berbahan baku batubara bituminus dengan aktivator H3PO4 dan NH4HCO3 menghasilkan karbon aktif dengan bilangan iodin 1238,5 mg/g. Pembuatan karbon aktif dari batubara dengan aktivator ZnCl2 memberikan bilangan (Suliestyah dan Astuti, 2014) (Rijali, 2015).…”

Production of activated carbon from coal with H3PO4 activation for adsorption of Fe(II) and Mn(II) in acid mine drainage

“…The activated carbon from the coal has been produced using various activation and surface modification techniques and has been applied as an adsorbent. Monika (2017) has made activated carbon from coal by activating a mixture of KOH and NaOH to adsorb CO gas. Anbia and Amirmahmoodi (2016) modified the surface of coal-activated carbon using surfactants to adsorb Hg and Mn(II) metals.…”