Phenol adsorption onto coffee waste - granular activated carbon: kinetics and equilibrium studies in aqueous solutions
abstract In this research, the production of granular activated carbon from coffee waste (CW) by chemical activation with zinc chloride was studied by using a 23 factorial design with the three responses (surface area, yield, and hardness) and studying three factors (the activation temperature, acti...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Balaban Publishers
2017
|
| Online Access: | http://eprints.uanl.mx/17549/1/337.pdf |
| _version_ | 1824414931056852992 |
|---|---|
| author | Díaz de León Garza, María de la Luz Soto Regalado, Eduardo Loredo Cancino, Margarita Cerino Córdova, Felipe de Jesús García Reyes, Refugio Bernardo Dávila Guzmán, Nancy Elizabeth Loredo Medrano, José Ángel |
| author_facet | Díaz de León Garza, María de la Luz Soto Regalado, Eduardo Loredo Cancino, Margarita Cerino Córdova, Felipe de Jesús García Reyes, Refugio Bernardo Dávila Guzmán, Nancy Elizabeth Loredo Medrano, José Ángel |
| author_sort | Díaz de León Garza, María de la Luz |
| collection | Repositorio Institucional |
| description | abstract In this research, the production of granular activated carbon from coffee waste (CW) by chemical activation with zinc chloride was studied by using a 23 factorial design with the three responses (surface area, yield, and hardness) and studying three factors (the activation temperature, activation time, and impregnation ratio). The findings expose that after the experimental design, the highest response values were achieved at an activation temperature of 600°C, an activation time of 40 min, and an impregnation ratio of 1.5 g ZnCl2 g–1 CW. At these conditions, the experimental tests produced a surface area of 1,279 m2 g–1. Batch studies of phenol adsorption onto coffee waste-activated carbon (CW-GAC) were performed at different solution pH, stirring speeds, and initial phenol concentrations. The maximum phenol adsorption capacity onto CW-GAC was 160.52 mg g−1 at pH 7. The adsorption kinetics was affected by stirring speed, the required time to achieve equilibrium decreased from 150 to 120 min when stirring speed varied from 200 to 400 min–1. Film and intraparticle diffusion mechanisms controlled the adsorption of phenol onto CW-GAC. Finally, the porous material developed in this research is capable of sequestering phenol from aqueous solutions to a higher extent than similar lignocellulosic-based activated carbons. Keywords: Adsorption; Coffee; Factorial experimental design; Granular activated carbon; Lignocellulosic waste |
| format | Article |
| id | eprints-17549 |
| institution | UANL |
| language | English |
| publishDate | 2017 |
| publisher | Balaban Publishers |
| record_format | eprints |
| spelling | eprints-175492021-05-06T00:38:26Z http://eprints.uanl.mx/17549/ Phenol adsorption onto coffee waste - granular activated carbon: kinetics and equilibrium studies in aqueous solutions Díaz de León Garza, María de la Luz Soto Regalado, Eduardo Loredo Cancino, Margarita Cerino Córdova, Felipe de Jesús García Reyes, Refugio Bernardo Dávila Guzmán, Nancy Elizabeth Loredo Medrano, José Ángel abstract In this research, the production of granular activated carbon from coffee waste (CW) by chemical activation with zinc chloride was studied by using a 23 factorial design with the three responses (surface area, yield, and hardness) and studying three factors (the activation temperature, activation time, and impregnation ratio). The findings expose that after the experimental design, the highest response values were achieved at an activation temperature of 600°C, an activation time of 40 min, and an impregnation ratio of 1.5 g ZnCl2 g–1 CW. At these conditions, the experimental tests produced a surface area of 1,279 m2 g–1. Batch studies of phenol adsorption onto coffee waste-activated carbon (CW-GAC) were performed at different solution pH, stirring speeds, and initial phenol concentrations. The maximum phenol adsorption capacity onto CW-GAC was 160.52 mg g−1 at pH 7. The adsorption kinetics was affected by stirring speed, the required time to achieve equilibrium decreased from 150 to 120 min when stirring speed varied from 200 to 400 min–1. Film and intraparticle diffusion mechanisms controlled the adsorption of phenol onto CW-GAC. Finally, the porous material developed in this research is capable of sequestering phenol from aqueous solutions to a higher extent than similar lignocellulosic-based activated carbons. Keywords: Adsorption; Coffee; Factorial experimental design; Granular activated carbon; Lignocellulosic waste Balaban Publishers 2017-09-04 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/17549/1/337.pdf http://eprints.uanl.mx/17549/1.haspreviewThumbnailVersion/337.pdf Díaz de León Garza, María de la Luz y Soto Regalado, Eduardo y Loredo Cancino, Margarita y Cerino Córdova, Felipe de Jesús y García Reyes, Refugio Bernardo y Dávila Guzmán, Nancy Elizabeth y Loredo Medrano, José Ángel (2017) Phenol adsorption onto coffee waste - granular activated carbon: kinetics and equilibrium studies in aqueous solutions. Desalination and water treatment, 90. pp. 231-240. ISSN 1944-3994 http://doi.org/10.5004/dwt.2017.21418 doi:10.5004/dwt.2017.21418 |
| spellingShingle | Díaz de León Garza, María de la Luz Soto Regalado, Eduardo Loredo Cancino, Margarita Cerino Córdova, Felipe de Jesús García Reyes, Refugio Bernardo Dávila Guzmán, Nancy Elizabeth Loredo Medrano, José Ángel Phenol adsorption onto coffee waste - granular activated carbon: kinetics and equilibrium studies in aqueous solutions |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Phenol adsorption onto coffee waste - granular activated carbon: kinetics and equilibrium studies in aqueous solutions |
| title_full | Phenol adsorption onto coffee waste - granular activated carbon: kinetics and equilibrium studies in aqueous solutions |
| title_fullStr | Phenol adsorption onto coffee waste - granular activated carbon: kinetics and equilibrium studies in aqueous solutions |
| title_full_unstemmed | Phenol adsorption onto coffee waste - granular activated carbon: kinetics and equilibrium studies in aqueous solutions |
| title_short | Phenol adsorption onto coffee waste - granular activated carbon: kinetics and equilibrium studies in aqueous solutions |
| title_sort | phenol adsorption onto coffee waste granular activated carbon kinetics and equilibrium studies in aqueous solutions |
| url | http://eprints.uanl.mx/17549/1/337.pdf |
| work_keys_str_mv | AT diazdeleongarzamariadelaluz phenoladsorptionontocoffeewastegranularactivatedcarbonkineticsandequilibriumstudiesinaqueoussolutions AT sotoregaladoeduardo phenoladsorptionontocoffeewastegranularactivatedcarbonkineticsandequilibriumstudiesinaqueoussolutions AT loredocancinomargarita phenoladsorptionontocoffeewastegranularactivatedcarbonkineticsandequilibriumstudiesinaqueoussolutions AT cerinocordovafelipedejesus phenoladsorptionontocoffeewastegranularactivatedcarbonkineticsandequilibriumstudiesinaqueoussolutions AT garciareyesrefugiobernardo phenoladsorptionontocoffeewastegranularactivatedcarbonkineticsandequilibriumstudiesinaqueoussolutions AT davilaguzmannancyelizabeth phenoladsorptionontocoffeewastegranularactivatedcarbonkineticsandequilibriumstudiesinaqueoussolutions AT loredomedranojoseangel phenoladsorptionontocoffeewastegranularactivatedcarbonkineticsandequilibriumstudiesinaqueoussolutions |