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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2016
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| Online Access: | https://www.redalyc.org/articulo.oa?id=47448461009 |
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| author | Badreddine Belhamdi |
| author_facet | Badreddine Belhamdi |
| contents | A kinetic, equilibrium and thermodynamic study of L-phenylalanine adsorption using activated carbon based on agricultural waste (date stones) Badreddine Belhamdi Zoulikha Merzougui Mohamed Trari Abdelhamid Addoun Ingeniería phenylalanine Thermodynamic Sorbent surface Activated carbon Size distribution The main purpose of this work is to produce low cost activated carbons from date stones wastes for the adsorption of l -phenylalanine. The activated carbons were prepared by chemical activation with KOH (ACK) and ZnCl 2 (ACZ) and characterized by scanning electron microscopy, N 2 adsorption–desorption isotherms and FT-IR spectroscopy. Both The activated carbons ACK and ACZ have high specific sur- face areas and large pore volumes, favorable for the adsorption. Batch experiments were conducted to determine the adsorption capacities. A Strong dependence of the adsorption capacity on pH was observed, the capacity decreases with increasing pH up to optimal value of 5.7. The adsorption follows a pseudo-second order kinetic model. Additionally, the equilibrium adsorption data were well fitted to the Langmuir isotherm, and the maximum adsorption capacities of l -phenylalanine onto ACK and ACZ were 188.3 and 133.3 mg g − 1 at pH 5.7, respec- tively. The thermodynamic study revealed that the adsorption of l -phenylalanine onto activated carbons was exothermic in nature. The proposed adsorption mechanisms take into account the hydrophobic and electrostatic interactions which played the critical roles in the l -phenylalanine adsorption. 2016 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47448461009 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.5 Vol.14 |
| format | Artículo científico |
| id | redalyc_47448461009 |
| language | en |
| publishDate | 2016 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | A kinetic, equilibrium and thermodynamic study of L-phenylalanine adsorption using activated carbon based on agricultural waste (date stones) Badreddine Belhamdi Ingeniería phenylalanine Thermodynamic Sorbent surface Activated carbon Size distribution A kinetic, equilibrium and thermodynamic study of L-phenylalanine adsorption using activated carbon based on agricultural waste (date stones) Badreddine Belhamdi Zoulikha Merzougui Mohamed Trari Abdelhamid Addoun Ingeniería phenylalanine Thermodynamic Sorbent surface Activated carbon Size distribution The main purpose of this work is to produce low cost activated carbons from date stones wastes for the adsorption of l -phenylalanine. The activated carbons were prepared by chemical activation with KOH (ACK) and ZnCl 2 (ACZ) and characterized by scanning electron microscopy, N 2 adsorption–desorption isotherms and FT-IR spectroscopy. Both The activated carbons ACK and ACZ have high specific sur- face areas and large pore volumes, favorable for the adsorption. Batch experiments were conducted to determine the adsorption capacities. A Strong dependence of the adsorption capacity on pH was observed, the capacity decreases with increasing pH up to optimal value of 5.7. The adsorption follows a pseudo-second order kinetic model. Additionally, the equilibrium adsorption data were well fitted to the Langmuir isotherm, and the maximum adsorption capacities of l -phenylalanine onto ACK and ACZ were 188.3 and 133.3 mg g − 1 at pH 5.7, respec- tively. The thermodynamic study revealed that the adsorption of l -phenylalanine onto activated carbons was exothermic in nature. The proposed adsorption mechanisms take into account the hydrophobic and electrostatic interactions which played the critical roles in the l -phenylalanine adsorption. 2016 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47448461009 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.5 Vol.14 |
| title | A kinetic, equilibrium and thermodynamic study of L-phenylalanine adsorption using activated carbon based on agricultural waste (date stones) |
| topic | Ingeniería phenylalanine Thermodynamic Sorbent surface Activated carbon Size distribution |
| url | https://www.redalyc.org/articulo.oa?id=47448461009 |