Preliminary Experimentation of COz Adsorption on Activated Carbon
The role of CO, in Global Warmin-n is well known, while it is now not included within the existing emission standard in Indonesia. CO on the other hand is being limited, and the existing technology is encouraging emitters to convert CO into C02, e.g., using catalytic converters for motor vehicles. This experiment is meant to find the feasibili of CO2 adsorption on Activated carbon, for any burning facilities to reduce CO, emissions. Activated carbon is used because of its abundance in Indonesia, hence its low cost. Due to limited existing resources, emissions in this experiment were taken from tnw Vpes of motorbikes ( hvo and four stroke type). Activated carbon (AC) are of granule @e, taking into clccount
that the expected vaporpressure will be low. Length of activated carbon were determined by preparing a tube having the same diameter as a motorbike exhaust pipe, to serve as activated carbon column. The 50 cm pipe was filled completely with AC, than, exhaust gas wos run through this column, and velocity pressure (YP) nus measured at the end of the tube.
Whenever, no VP could be measured, the length of the AC column was decreased, until VP could be measured. The determined maximum length turned out to be 30 cm. Since adsorption curve was non linear, the length of AC column wos varied as 30, 25, and 20 cm. CO2 concentration wos measured using Orsat method which produced % ofC02 measured. The . . E CO2 concentration, ambient temperature (T) and Pressure (P) were measured before and afer the exhaust gas passed through the AC column to convert its volume into the STP 1 conditions. The C02 concentrations before and after d~fisionth rough the AC column were then used to calculate the adsorption eflciency. The results showed that CO2 concentrations before the adsorption for 2 stroke and 4 stroke @pe were 113.705 mg/l and 146.739 mdl. CO2 wncentrah0n with the length ofAC column of 30, 25. and 20 cm, afer the adsorption process, their efticiency for the 2 stroke type were 113.137 mg/l and 50.89%. 100.851 mg/l I and 24.57%; 65.668 mg/l and 20.35%; for the 4 stroke type w s 116.875 mg/l and 67.35%; 56.145 mg/l and 61.73%; 47.969 mg/l and 20.35%. Respectively, maximum adsorption i eflciencies for the 2 stroke (50.87%) and the 4 stroke bikes (67.35%) occurred at 30 cm of AC column which w s the maximum adsorbent length, where gas was still capable ofpassing through the adsorbent column. Based on adsorption theory, for a ventilation system on the other hand, the length required to reach 90 % eficiency usas 120 cm. It is recommended that further research should be conducted for the feasibility of the application of adsorption
systerns for motorbikes and any other burning facilities.
Dibuat Oleh : Mila Dirgawati, Juli Soemirat, Kustriyani
E-mail : mila_dirga@yahoo.com, julisoemirat@gmail.com
Kata Kunci : –
Preliminary Experimentation of COz Adsorption on Activated Carbon