| Water Recycling System Based on Adsorption by Activated Carbon Synthesised From C. Verum for Space Exploration; An Estimated Design |
| Paper ID : 1179-ASAT19 |
| Authors: |
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Mohamed Nasr Ettish *1, Osama Ali Abuzalat2, Gharieb Elsayed El-Sayyad3, Mohamed Abo Elfotoh El Sayed4 1Chemical warfare department, Chemical Engineering Branch, Military technical college, Cairo, Egypt. 2Chemical warfare department, Chemical Engineering Branch, Military Technical College, Cairo, Egypt. 3Egyptian Atomic Energy Authority 4Military Technical College, Cairo, Egypt |
| Abstract: |
| Water recycling is a crucial component of space flights. In this study, c.verum, a low-cost agricultural by-product abundant in Egypt, which was not utilized before for the preparation of porous carbons, and its ability for recycling water in space stations was estimated. The prepared samples show high porosity and surface area by physical activation. The influences of the pyrolysis temperature and activation hold-up time on the activated carbon's porosity were studied. The BET surface area and the total pore volume of the prepared carbon were used as the criteria for selecting the optimum preparation parameters. The optimum temperature for pyrolysis was found to be at a temperature of 900⁰C, hold-up time of two-hour, a nitrogen flow rate of 150 cm3/min, and a heating rate of 10⁰C/min. However, the optimum activation conditions were at a temperature of 900⁰C, a CO2 flow rate of 150 cm3/min, a heating rate of 20⁰C/min, and a hold-up time of 120 min. Equilibrium data is used for fitting to Freundlich, Langmuir, and Temkin isotherms models. The result revealed that the Langmuir model was the finest match for the equilibrium data, with an extreme monolayer adsorption capability of 12.37 mg/g at 25⁰C. The maximum monolayer adsorption capacity decreased with increasing temperature confirmed the exothermic character of the adsorption interaction. |
| Keywords: |
| Space flights, water recycling, Activated carbon, Adsorption, Physical activation, Pore volume, Surface area, Cinnamon sticks. |
| Status : Conditional Accept (Oral Presentation) |
