OrangerV1, Main, Exploration, bibRecord, 000274

Comparison between Brazilian agro-wastes and activated carbon as adsorbents to remove Ni(II) from aqueous solutions.

Identifieur interne : 000274 ( Main/Exploration ); précédent : 000273; suivant : 000275

Comparison between Brazilian agro-wastes and activated carbon as adsorbents to remove Ni(II) from aqueous solutions.

Auteurs : Guilherme Luiz Dotto [Brésil] ; Lucas Meili [Brésil] ; Ana Karla De Souza Abud [Brésil] ; Eduardo Hiromitsu Tanabe [Brésil] ; Daniel Assumpção Bertuol [Brésil] ; Edson Luiz Foletto [Brésil]

Source :

Water science and technology : a journal of the International Association on Water Pollution Research [ 0273-1223 ] ; 2016.

RBID : pubmed:27232408

Descripteurs français

Wicri :
- geographic : Brésil.

English descriptors

KwdEn :
- Adsorption, Ananas, Biomass, Brazil, Charcoal (chemistry), Citrus sinensis, Hydrogen-Ion Concentration, Kinetics, Models, Chemical, Models, Theoretical, Nickel (isolation & purification), Passiflora, Saccharum, Water Pollutants, Chemical (isolation & purification).
MESH :
- chemical , chemistry : Charcoal.
- chemical , isolation & purification : Nickel, Water Pollutants, Chemical.
- geographic : Brazil.
- Adsorption, Ananas, Biomass, Citrus sinensis, Hydrogen-Ion Concentration, Kinetics, Models, Chemical, Models, Theoretical, Passiflora, Saccharum.

Abstract

This research was performed to find an alternative, low-cost, competitive, locally available and efficient adsorbent to treat nickel (Ni) containing effluents. For this purpose, several Brazilian agro-wastes like sugarcane bagasse (SCB), passion fruit wastes (PFW), orange peel (OP) and pineapple peel (PP) were compared with an activated carbon (AC). The adsorbents were characterized. Effects of fundamental factors affecting the adsorption were investigated using batch tests. Kinetic and equilibrium studies were performed using conventional models. It was verified that the adsorption was favored at pH of 6.0 for all agro-wastes, being dependent of the Ni speciation, point of zero charge and surface area of the adsorbents. The Ni removal percentage was in the following order: SCB > OP > AC > PFW > PP. From the kinetic viewpoint, the Elovich model was appropriate to fit the Ni adsorption onto SCB, while for the other adsorbents, the pseudo-first-order model was the most suitable. For all adsorbents, the Langmuir model was the more adequate to represent the equilibrium data, being the maximum adsorption capacities of 64.1 mg g(-1), 60.7 mg g(-1), 63.1 mg g(-1), 48.1 mg g(-1) and 64.3 mg g(-1) for SCB, PFW, OP, PP and AC, respectively. These results indicated that mainly SCB and OP can be used as alternative adsorbents to treat Ni containing effluents.

DOI: 10.2166/wst.2016.095
PubMed: 27232408

Affiliations:

Brésil

Le document en format XML

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<term>Citrus sinensis</term>
<term>Hydrogen-Ion Concentration</term>
<term>Kinetics</term>
<term>Models, Chemical</term>
<term>Models, Theoretical</term>
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<front><div type="abstract" xml:lang="en">This research was performed to find an alternative, low-cost, competitive, locally available and efficient adsorbent to treat nickel (Ni) containing effluents. For this purpose, several Brazilian agro-wastes like sugarcane bagasse (SCB), passion fruit wastes (PFW), orange peel (OP) and pineapple peel (PP) were compared with an activated carbon (AC). The adsorbents were characterized. Effects of fundamental factors affecting the adsorption were investigated using batch tests. Kinetic and equilibrium studies were performed using conventional models. It was verified that the adsorption was favored at pH of 6.0 for all agro-wastes, being dependent of the Ni speciation, point of zero charge and surface area of the adsorbents. The Ni removal percentage was in the following order: SCB > OP > AC > PFW > PP. From the kinetic viewpoint, the Elovich model was appropriate to fit the Ni adsorption onto SCB, while for the other adsorbents, the pseudo-first-order model was the most suitable. For all adsorbents, the Langmuir model was the more adequate to represent the equilibrium data, being the maximum adsorption capacities of 64.1 mg g(-1), 60.7 mg g(-1), 63.1 mg g(-1), 48.1 mg g(-1) and 64.3 mg g(-1) for SCB, PFW, OP, PP and AC, respectively. These results indicated that mainly SCB and OP can be used as alternative adsorbents to treat Ni containing effluents.</div>
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Comparison between Brazilian agro-wastes and activated carbon as adsorbents to remove Ni(II) from aqueous solutions.

Comparison between Brazilian agro-wastes and activated carbon as adsorbents to remove Ni(II) from aqueous solutions.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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