Frontiers of Chemical Science and Engineering >
Kinetics and thermodynamics of the phosphine adsorption on the modified activated carbon
Received date: 12 Nov 2010
Accepted date: 10 Feb 2011
Published date: 05 Jun 2011
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The kinetics and the thermodynamics of phosphine (PH3) adsorption on the modified activated carbon have been explained for the adsorption process of PH3. This study investigated the kinetic and thermodynamic properties of PH3 adsorption on the activated carbon impregnated with 5% HCl solution. The thermodynamic properties including PH3 adsorption isotherm and adsorption heat were separately investigated at 20°C, 70°C, 90°C. The results showed that the Freundlich-type isotherm equation described the isotherms well. The adsorption capacity increased with increasing temperature between 20°C and 70°C. Between 70°C and 90°C, the adsorption capacity decreased obviously with increasing temperature. The adsorption capacity reached the maximum at 70°C. By analyzing the results of the kinetics and the thermodynamics, we found that the adsorption of PH3 was dominated by physical adsorption at the lower temperature (20°C). Then with increasing temperature, chemical adsorption gradually dominated in the adsorption process. The adsorption capacity decreased at above 70°C is due to the exothermic effects in the process of adsorption.
Key words： adsorption; PH3; activated carbon; kinetics; thermodynamics
Bingnan REN . Kinetics and thermodynamics of the phosphine adsorption on the modified activated carbon[J]. Frontiers of Chemical Science and Engineering, 2011 , 5(2) : 203 -208 . DOI: 10.1007/s11705-010-0571-0
| 1 |
Chen S J. The current production status and consumption ways of phosphorus in China. Chemical Industry and Engineering Progress, 2005, 21: 776–778 (in Chinese)
|
| 2 |
Ma L, Ning P, Zhang Y, Wang X. Experimental and modeling of fixed-bed reactor for yellow phosphorous tail gas purification over impregnated activated carbon. Chemical Engineering Journal, 2008, 137(3): 471–479
|
| 3 |
Quinn R, Dahl T A, Toseland B A. An evaluation of synthesis gas contaminants as methanol synthesis catalyst poisons. Applied Catalysis A, 2004, 272: 61–68
|
| 4 |
Sun H, Hankins N P, Azzopardi B J, Hilal N, Almeida C A P. A pilot-plant study of the adsorptive micellar flocculation process: Optimum design and operation. Separation and Purification Technology, 2008, 62(2): 273–280
|
| 5 |
Wang X, Ning P, Shi Y, Jiang M. Adsorption of low concentration phosphine in yellow phosphorus off-gas by impregnated activated carbon. Journal of Hazardous Materials, 2009, 171(1–3): 588–593
|
| 6 |
Quinn R, Dahl T A, Diamond B W, Toseland B A. Removal of arsine from synthesis gas using a copper on carbon adsorbent. Industrial & Engineering Chemistry Research, 2006, 45(18): 6272–6278
|
| 7 |
Bandosz T J. Effect of pore structure and surface chemistry of virgin activated carbons on removal of hydrogen sulfide. Carbon, 1999, 37(3): 483–491
|
| 8 |
Bandosz T J. On the adsorption/oxidation of hydrogen sulfide on activated carbons at ambient temperatures. Journal of Colloid and Interface Science, 2002, 246(1): 1–20
|
| 9 |
Alhamed Y A. Adsorption kinetics and performance of packed bed adsorber for phenol removal using activated carbon from dates’ stones. Journal of Hazardous Materials, 2009, 170(2–3): 763–770
|
| 10 |
Bagreev A, Rahman H, Bandosz T J. Study of H2S adsorption and water regeneration of spent coconut-based activated carbon. Environmental Science & Technology, 2000, 34(21): 4587–4592
|
| 11 |
Tsai J H, Jeng F T, Chiang H L. Removal of H2S from exhaust gas by use of alkaline activated carbon. Adsorption, 2001, 7(4): 357–366
|
| 12 |
Bagreev A, Rahman H, Bandosz T J. Wood-based activated carbons as adsorbents of hydrogen sulfide: a study of adsorption and water regeneration processes. Industrial & Engineering Chemistry Research, 2000, 39(10): 3849–3855
|
| 13 |
Siriwardane R V, Shen M S, Fisher E P, Poston J A. Adsorption of CO2 on molecular sieves and activated carbon. Energy & Fuels, 2001, 15(2): 279–284
|
| 14 |
Adib F, Bagreev A, Bandosz T J. Analysis of the relationship between H2S removal capacity and surface properties of unimpregnated activated carbons. Environmental Science & Technology, 2000, 34(4): 686–692
|
| 15 |
Li W C, Bai H, Hsu J N, Li S N, Chen C. Metal loaded zeolite adsorbents for phosphine removal. Industrial & Engineering Chemistry Research, 2008, 47(5): 1501–1505
|
| 16 |
Huang C C, Chen C H, Chu S M. Effect of moisture on H2S adsorption by copper impregnated activated carbon. Journal of Hazardous Materials, 2006, 136(3): 866–873
|
| 17 |
Xiao Y, Wang S, Wu D, Yuan Q. Catalytic oxidation of hydrogen sulfide over unmodified and impregnated activated carbon. Separation and Purification Technology, 2008, 59(3): 326–332
|
| 18 |
Ren B N. Factors influencing adsorption of PH3 on modified activated carbon. Advanced Materials Research, 2009, 79–82: 39–42
|
| 19 |
Zhang K, Hong J, Cao G, Zhan D, Tao Y, Cong C. The kinetics of thermal dehydration of copper(II) acetate monohydrate in air. Thermochimica Acta, 2005, 437(1–2): 145–149
|
| 20 |
Karlin K D, Kaderli S, Zuberbühler A D. Kinetics and thermodynamics of copper(I)/dioxygen interaction. Accounts of Chemical Research, 1997, 30(3): 139–147
|
| 21 |
Zou W H, Han R P, Chen Z, Shi J,Liu. Characterization and properties of manganese oxide coated zeolite as adsorbent for removal of Copper (II) and Lead(II) ions from solution. Journal of Chemical & Engineering Data, 2006, 51(2): 534–541
|
| 22 |
Li S F. Chemical Reaction Engineering. Beijing: Chemical Industry Press, 2005, 66–67 (in Chinese)
|
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