AI SearchAir stripping of ammonia from wastewater
Call Number: AIT Thesis no.EV-80-20 Material type:
TextSeries: Asian Institute of Technology. Thesis ; no. EV-80-20Publication details: Bangkok : Asian Institute of Technology, 1980Description: viii, 68 pSubject(s): Online resources: Dissertation note: Thesis (M.Eng.) - Asian Institute of Technology, 1980 Summary: A mathematical model for the simulation of ammonia striping in crosscurrent spray system was presented. The use of the model for the design of the system was illustrated using the empirical relationships obtained in the laboratory. Experimental investigation revealed that the efficiency of the system increases with an increase in the initial ammonia concentration. Although the percent removal increases with the gas-to-liquid ratio, the unit efficiency based on unit air flow and initial ammonia concentration decreases with increasing gas-to-liquid ratio. The theoretical height of a transfer unit for ammonia (H0G)' which is the ratio of the gas rate to the volumetric overall gas-phase mass transfer coefficient was found to vary proportionally with gas-to-liquid ratio (G/L) in the ammonia concentration range between 140 mg/l and 225 mg/1, according to the following equation: in HOG= -0.3480 + 0.94 in(G/L) However, HOG was observed to be also influenced by the initial ammonia (Cf) at concentrations below 140 mg/l, according to the following equation: ln HOG = 6.2085 - 0.9525 ln Cf
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22-AIT Thesis (Replacement)
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Asian Institute of Technology Library AIT Publications | AIT Thesis no.EV-80-20 (Browse shelf(Opens below)) | 3 | Available | 30050120656235 | |||||||||||||
40-Archives
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| 14-General Book | Asian Institute of Technology Library AIT Publications | AIT Thesis no.EV-80-20 (Browse shelf(Opens below)) | 1 | Available | 30050120904346 |
A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development
Thesis (M.Eng.) - Asian Institute of Technology, 1980
A mathematical model for the simulation of ammonia striping in crosscurrent spray system was presented. The use of the model for the design of the system was illustrated using the empirical relationships obtained in the laboratory. Experimental investigation revealed that the efficiency of the system increases with an increase in the initial ammonia concentration. Although the percent removal increases with the gas-to-liquid ratio, the unit efficiency based on unit air flow and initial ammonia concentration decreases with increasing gas-to-liquid ratio. The theoretical height of a transfer unit for ammonia (H0G)' which is the ratio of the gas rate to the volumetric overall gas-phase mass transfer coefficient was found to vary proportionally with gas-to-liquid ratio (G/L) in the ammonia concentration range between 140 mg/l and 225 mg/1, according to the following equation: in HOG= -0.3480 + 0.94 in(G/L) However, HOG was observed to be also influenced by the initial ammonia (Cf) at concentrations below 140 mg/l, according to the following equation: ln HOG = 6.2085 - 0.9525 ln Cf
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