Adsorción de azul de metileno utilizando cáscara de yuca (Manihot esculenta) modificada químicamente con ácido oxálico

Arrieta, Andrés Adolfo Amell; Reales, Hellman Llanos; Gil, Jeffrey Galeano; Moreno, Daniela García

doi:10.18273/revion.v31n2-2018007

Cited by 5 publications

(1 citation statement)

References 33 publications

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“… pH of the solution was measured using a pH meter after it had been balanced with NaOH or HCl solutions. Point of zero charge (pzc): the point of zero charge was determined according to Albis et al [ 20 ]. In brief, 50 mL of 0.01 M NaCl was adjusted to pH from 2 to 12 at 1 pH unit interval by using 0.01 M NaOH and HCl.…”

Section: Methodsmentioning

confidence: 99%

Water Treatment from MB Using Zn-Ag MWCNT Synthesized by Double Arc Discharge

et al. 2021

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A new type of nano-adsorbent zinc-silver nanoparticles ornamented by multi-walled carbon nanotubes (Zn-Ag MWCNT) was efficiently synthesized by double arc discharge using a newly designed rotating cylinder electrode. Zn-Ag MWCNT was characterized by different instrumental methods to get information about the sample shape, size, and crystallinity. Without irradiation, Zn-Ag MWCNT indicated significant potential for elimination against methylene blue (MB) which is dissolved in deionized water. When the adsorbent concentration was 0.1 g/L at normal 8 pH, the Zn-Ag MWCNTs were efficient in removing 97% of the MB from 40 mg/L that was dissolved in water for 10 min. The dye removal activity of (Zn-Ag) decorated MWCNTs was attributed to the influence of silver and zinc nanoparticles on the MWCNTs. Finally, this approach was both cost-effective and efficient.

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Section: Methodsmentioning

confidence: 99%

Water Treatment from MB Using Zn-Ag MWCNT Synthesized by Double Arc Discharge

et al. 2021

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Chemistry activation of sawdust activated carbon for dye removal: Kinetics and isotherms

Villegas-Peralta,

Gonzalez Tineo,

Duarte Ruiz

et al. 2025

Desalination and Water Treatment

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Removal of dyes from aqueous solutions by adsorbent prepared from coffee residues

López

Ramírez

Giraldo

et al. 2019

J. Phys.: Conf. Ser.

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This study reports the production of an adsorbent material derived from extracted coffee residues using phosphoric acid and zinc chloride as activating agents. The structural features of the materials were characterized using different analytical techniques. The BET surface areas were found between 3.81 m2.g−1 y 176.27 m2.g−1, while the FTIR analysis showed the formation of oxygenated functional groups, which are active in the adsorption process. These materials were evaluated as adsorbents for the removal of methylene blue from aqueous solution. Batch adsorption tests were performed at room temperature and the effects of contact time and, initial dye concentration was investigated. The equilibrium adsorption results were complied with Langmuir isotherm model and its maximum monolayer adsorption capacity was 15.92 mg.g−1. Adsorption kinetics studies indicated that the pseudo second order model yielded the best fit for the kinetic data. This typical dependence of methylene blue uptake on kinetic studies indicated the adsorption process to be both chemisorption and diffusion controlled. The experimental data obtained in the present study indicate that coffee residues are suitable candidates for use as adsorbents in the removal of cationic dyes.

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Adsorción de azul de metileno utilizando cáscara de yuca (Manihot esculenta) modificada químicamente con ácido oxálico

Cited by 5 publications

References 33 publications

Water Treatment from MB Using Zn-Ag MWCNT Synthesized by Double Arc Discharge

Water Treatment from MB Using Zn-Ag MWCNT Synthesized by Double Arc Discharge

Chemistry activation of sawdust activated carbon for dye removal: Kinetics and isotherms

Removal of dyes from aqueous solutions by adsorbent prepared from coffee residues

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