Update Artikelilmiah: 49181

DIOGA LINTAR SATRIAJI

NIM

Judul Artikel

Abstrak (Bhs. Indonesia)

Peningkatan emisi gas karbon dioksida (CO2) di atmosfer berdampak pada
pemanasan global. Adsorpsi gas CO2 menggunakan karbon aktif dipilih karena
menawarkan efisiensi energi dan biaya yang relatif rendah. Ranting teh dipilih
sebagai material adsorben pada penelitian ini karena memiliki kandungan lignin
(39,5%), selulosa (31,58%), dan hemiselulosa (29,92%). Tujuan penelitian ini yaitu
mengetahui pengaruh variasi waktu aktivasi fisika dengan Arc Plasma, serta
pengaruh variasi rasio aktivator KOH terhadap karbon aktif yang disintesis. Proses
sintesis terdiri dari karbonisasi pada suhu 400 oC selama 1 jam, aktivasi kimia
menggunakan KOH (40%) dengan rasio KOH : biochar yaitu 2:1; 4:1; dan 8:1 pada
suhu aktivasi 200 oC selama 5 jam dengan kecepatan pengadukan 200 rpm, serta
menggunakan kuat arus 70 A (setara 700 oC) pada Arc Plasma, dan diperoleh waktu
optimum yaitu 10 menit. Karakterisasi dilakukan menggunakan Brunauer-Emmet-
Teller (BET), Fourier Transform Infrared (FTIR), Scanning Electron Microscopy-
Energy Dispersive X-Ray (SEM-EDX), dan X-Ray Diffraction (XRD). Luas
permukaan sampel AC1-A2z, AC2-B2, AC2-B4, AC2-B8 berturut-turut sebesar
53,2619; 380,366; 419,070; dan 687,222 m2/g. Kapasitas adsorpsi gas CO2 dari uji
TPD-CO2 untuk sampel yang sama berturut-turut adalah sebesar 1,6444; 3,9576;
4,7273; dan 5,4234 mmol/g.

Abtrak (Bhs. Inggris)

The increasing emission of carbon dioxide (CO₂) gas into the atmosphere has
contributed to global warming. The adsorption of CO₂ gas using activated carbon
was selected due to its relatively low energy and cost requirements. Tea twigs were
chosen as the adsorbent material in this study because they contain lignin (39.5%),
cellulose (31.58%), and hemicellulose (29.92%). This research aimed to investigate
the effect of varying physical activation times using Arc Plasma, as well as the
influence of different KOH activator ratios on the characteristics of the synthesized
activated carbon. The synthesis process consisted of carbonization at 400 °C for 1
hour, followed by chemical activation using 40% KOH solution with KOH : biochar
ratios of 2:1, 4:1, and 8:1 at 200 °C for 5 hours under a stirring speed of 200 rpm.
Physical activation was carried out using an electric current of 70 A (equivalent to
700 °C) in the Arc Plasma system, and the optimum activation time was found to
be 10 minutes. Characterization was conducted using Brunauer–Emmett–Teller
(BET), Fourier Transform Infrared (FTIR) Spectroscopy, Scanning Electron
Microscopy–Energy Dispersive X-ray (SEM–EDX), and X-ray Diffraction (XRD).
The specific surface areas of the AC1-A2z, AC2-B2, AC2-B4, and AC2-B8 samples
were 53.2619, 380.366, 419.070, and 687.222 m²/g, respectively. The CO₂
adsorption capacities obtained from TPD-CO₂ analysis were 1.6444, 3.9576,
4.7273, and 5.4234 mmol/g, respectively.

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