ChemInform Abstract: Preparation of Efficient Carbon Monoxide Adsorbent from Iron(II) Chloride, Copper(II) Chloride, and Active Carbon.

Latar belakang: PT Beton Elemenindo Perkasa merupakan industri yang bergerak di bidang konstruksi. Salah satu sampah yang dihasilkan PT Beton Elemenindo Perkasa adalah sampah polistirena foam yang pengolahannya masih dilakukan dengan pembakaran terbuka sehingga berdampak pada kesehatan dan penurunan kualitas lingkungan. Pembakaran sampah polistera foam menghasilkan gas berbahaya seperti styrene, hydrochloroflourocarbon (HCFC), polycyclic aromatic hydrocarbons (PAHs), carbon black serta karbon monoksida. Salah satu teknologi pengolahan sampah polisterana foam adalah dengan membuat tungku pembakaran yang dilengkapi media filter karbon. Karbon aktif merupakan salah satu media filter udara yang dapat menyerap gas berbahaya dari proses pembakaran. Tujuan penelitian ini adalah untuk mengetahui efektivitas penurunan konsentrasi karbon monoksida (CO) dengan sistem kontak media karbon aktif menggunakan variasi ukuran partikel.Metode: Penelitian ini merupakan jenis penelitian eksperimen dengan desain post test with control. Jumlah sampel dihitung berdasarkan banyaknya perlakuan dan jumlah pengulangan dalam penelitian. Penelitian ini menggunakan 2 macam perlakuan 20 mesh dan 30 mesh didapatkan 9 kali pengulangan.Hasil: Analisis statistik Independent T-Test menunjukkan ada perbedaan yang bermakna (p-value=0,001) pada variasi ukuran partikel karbon aktif terhadap paramater karbon monoksida (CO).Simpulan: Rata-rata persentase penurunan paling efektif pada ukuran partikel karbon aktif 30 mesh sebesar 77,95%. ABSTRACTTitle: Effectiveness of Carbon Monoxide (CO) Concentration Reduction on Active Carbon Contact System Using Particle Size Variation in Burning Process of Polystyrene FoamBackground:PT Beton Elemenindo Perkasa is an industry engaged in construction. One of the wastesgenerated by PT Beton Elemenindo Perkasa is polystyrene foam waste, its processing of which is still done with open burning so it has impact on health and environmental quality degradation. Burning polystyrene foamwaste produces harmful gases such as styrene, hydrochloroflourocarbon (HCFC), polycyclic aromatic hydrocarbons (PAHs), carbon black, and carbon monoxide. One of the polystyrene foam waste processing technologies is by making a combustion furnace equipped with carbon filter. Activated carbon is one of the air filter media that can absorb harmful gas from the combustion process. The purpose of this research is to identify the effectiveness of carbon monoxide (CO) concentration reduction on active carbon contact system using variation of particle size.Method: This research is a kind of experimental study with post test with control design. The number of samples was calculated based on the number of treatments and the number of repetitions in the study. This research used 2 kinds of treatment which were 20 mesh and 30 mesh and got 9 repetitions.Result:Independent T-Test statistical analysis showed a significant difference (p-value = 0.001) between the variation of particle size of activated carbon and carbon monoxide (CO) parametersConclusion:Average of the most effective reduction percentage onparticle-sized active carbon of 30 mesh was 77.95%.

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Pentan-3-one Formation from Ethylene, Carbon Monoxide and Hydrogen over Rhodium Supported on Active Carbon

Chemistry Letters ◽

10.1246/cl.1990.205 ◽

1990 ◽

Vol 19 (2) ◽

pp. 205-208 ◽

Cited By ~ 14

Author(s):

Nobuo Takahashi ◽

Hironori Arakawa ◽

Atsuhiko Kano ◽

Yoshimi Fukagawa ◽

Kiyoyuki Asao

Keyword(s):

Carbon Monoxide ◽

Active Carbon

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Reaction between Copper(II) Chloride and Active Carbon for the Formation of Solid Carbon Monoxide Adsorbent

Bulletin of the Chemical Society of Japan ◽

10.1246/bcsj.60.4455 ◽

1987 ◽

Vol 60 (12) ◽

pp. 4455-4456 ◽

Cited By ~ 3

Author(s):

Makoto Komiyama ◽

Hiroaki Ando ◽

Hidefumi Hirai

Keyword(s):

Carbon Monoxide ◽

Active Carbon ◽

Solid Carbon

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The mechanism of the steam-carbon reaction

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1948.0052 ◽

1948 ◽

Vol 193 (1034) ◽

pp. 377-399 ◽

Cited By ~ 49

Keyword(s):

Carbon Dioxide ◽

Carbon Monoxide ◽

Hydrogen Atom ◽

Active Carbon ◽

Active Sites ◽

Adsorbed Oxygen ◽

Adsorbed Hydrogen ◽

Hydrogen Atoms ◽

Exponential Factor ◽

Gaseous Carbon Monoxide

The detailed mechanism of the reaction between steam and coconut shell charcoal has been studied by the method described in the preceding paper. The temperature has been varied in the range 680 to 800° C and the pressures of the gases from 10 to 760 mm. Steam first reacts with the carbon to give oxygen and hydrogen atoms separately adsorbed on neighbouring sites. An initial dissociation into an adsorbed hydrogen atom and an adsorbed hydroxyl radical is probably followed by the more rapid transfer of the second hydrogen atom to the carbon. Only about 2% of the total surface takes part in the reaction; these sites are distinct from the smaller group which reacts with carbon dioxide, but they are also thought to be atoms at the edges of lattice planes. The rate of the first stage can be accounted for by assuming that reaction occurs in those collisions in which the combined energy of the incident steam molecule and the two active carbon atoms exceeds 75 kcal. Adsorbed hydrogen evaporates rapidly, but in the steady state much remains on the surface. A close correlation has been observed between the fraction of the active sites occupied by hydrogen and the extent to which the reaction is retarded by that gas. Adsorbed oxygen reacts much more slowly to form gaseous carbon monoxide; the latter, which has no retarding effect, is not appreciably adsorbed by the sites accessible to steam. The activation energy for the conversion of an adsorbed oxygen atom into gaseous carbon monoxide is found to be 55 kcal., and the non- exponential factor to be 10 11±1.7 sec. -1 which may be compared with the value of 10 13 sec. -1 predicted by simple theory. As the active carbon atoms are thought to be exerting less than their maximum valency, it is suggested that the two types differ in the number of extra bonds which they can form. Energetic considerations show that whereas those which can form a single bond should react with steam, only the relatively few capable of forming a double bond should react with carbon dioxide. This theory also explains why hydrogen is strongly adsorbed by both the steam and the carbon dioxide sites, but carbon monoxide only by the latter type. The relation of these views to outstanding problems of the oxygen-carbon and nitrous oxide-carbon reactions is discussed, and an explanation of the main kinetic features of those processes is given.

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