| Autor: |
Guo XJ; State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China. guoxj21@yahoo.com.cn, Tak JK, Johnson RL |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of hazardous materials [J Hazard Mater] 2009 Jul 15; Vol. 166 (1), pp. 372-6. Date of Electronic Publication: 2008 Nov 18. |
| DOI: |
10.1016/j.jhazmat.2008.11.028 |
| Abstrakt: |
A new and cost-effective adsorbent N-TRAP, made from waste wood-shavings and anaerobically digestion biosolids and impregnated with H(2)SO(4), was applied for the ammonia removal from air stream and biogas with high efficiency and effectiveness. Bearing a 75-80 and 65 wt.% sulfuric acid, the N-TRAPs mediated with wood shavings and biosolids showed the maximum ammonia adsorption capacity of 260-280 and 230 mg g(-1), respectively. Gas temperatures (20 and 60 degrees C) and moisture content (100% relative humidity) had no significantly negative effect on ammonia capture performance when temperature in the fixed-bed column was kept equalled to or slightly above the feed gas temperature. The pressure drop increased significantly when NH(3) began to break through the N-TRAP stripper due to the formation of ammonium sulfate blocking the vacuum space of packed adsorbent. At last, an alternative N-TRAP filter bed design was proposed to resolve the problem of pressure drop evolution. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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