The reactive surface of Castor leaf [Ricinus communis L.] powder as a green adsorbent for the removal of heavy metals from natural river water

Martins, Amanda E.; Pereira, Milene Stefani; Jorgetto, Alexandre de Oliveira; Martines, Marco Antônio Utrera; Silva, Rafael I. V.; Saeki, Margarida Júri; Castro, Gustavo Rocha de

doi:10.1016/j.apsusc.2013.02.096

Cited by 54 publications

(26 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…5a, particle size was not homogenous and some particles present elongated format. Despite the low specific surface area of cellulosebased materials Jorgetto et al 2013;Martins et al 2013), it is possible to observe the existence of irregular channels of approximately 10 µm in diameter (Figs. 5b, 5c, and 5d), which allowed the metal solution to contact the inner particles.…”

Section: Surface Characterizationmentioning

confidence: 99%

“…Although it is possible to create a material with the desired characteristics, the steps involved in material surface modification may generate toxic residues due to the solvents used and may also have high costs Souza et al 2011;Filho et al 2013;Jorgetto et al 2013), making large-scale production for environmental purposes impossible.…”

Section: Introductionmentioning

confidence: 99%

“…The extraction capacity of these natural materials is related to the existence of Lewis base atoms in their structures, which may form covalent bonds (with electron pair sharing) with metal species in solution and in the presence of carboxylic groups Martins et al 2013). In addition to their low cost and easy preparation, some of these materials can be reused for several adsorption/desorption cycles Martins et al 2013).…”

Section: Introductionmentioning

confidence: 99%

“…In addition to their low cost and easy preparation, some of these materials can be reused for several adsorption/desorption cycles Martins et al 2013).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Characterization of Corn (Zea mays) Leaf Powder and Its Adsorption Properties Regarding Cu(II) and Cd(II) from Aqueous Samples

Silva¹,

Jorgetto²,

Wondracek³

et al. 2014

BioResources

Self Cite

View full text Add to dashboard Cite

In this study, a green adsorbent made of corn leaf powder was applied in the removal of Cu(II) and Cd(II) from water samples. The material was characterized by Fourier transform infrared (FTIR) spectroscopy, which indicated the existence of amine (1375 and 1249 cm -1 ) and carboxylic groups (1730 cm -1 ). Elemental analysis corroborated the results of FTIR, indicating that the substance consisted of 0.63% sulfur and 0.46% nitrogen. The NMR results indicated that thiamine and methionine may be present in the corn leaf substances, which can act in coordination with metal species. Scanning electron microscopy (SEM) indicated the existence of pores of approximately 15 µm in diameter and a homogeneous particle size. Equilibrium adsorption was attained in 5 min, and the obtained data were applied to a pseudo-second-order kinetic model (r 2 = 0.999 for Cu(II) and Cd(II)). Selective adsorption of Cu(II) was attained at pH 3.0, and the maximum adsorption capacities were attained at pH 6.0. Adsorption isotherms were adjusted to a modified Langmuir equation and the maximum number of moles adsorbed of Cu(II) and Cd(II) were 0.089 and 0.071 mmol g -1 , respectively. The results are superior to many materials currently employed in metal removal from aqueous samples.

show abstract

Section: Surface Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In addition to their low cost and easy preparation, some of these materials can be reused for several adsorption/desorption cycles Martins et al 2013).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of Corn (Zea mays) Leaf Powder and Its Adsorption Properties Regarding Cu(II) and Cd(II) from Aqueous Samples

Silva¹,

Jorgetto²,

Wondracek³

et al. 2014

BioResources

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moreover, they are based on the estimation, assessment and comparison of many critical parameters such as cost, simplicity of design and operation, availability, efficiency and selectivity to toxic substances. For these reasons, several studies were carried out by using natural adsorbents for the removal of heavy metals from waste water [9][10][11][12][13][14][15][16]3,5,7]. As a result, electro-sorption technique has found an important case in the acceleration and improvement of the zinc removal from aqueous solutions [17].…”

Section: Introductionmentioning

confidence: 99%

Electrosorption Removal of the Zinc Ions from Aqueous Solution on an Artificial Electrode based in the Banana Wastes

Benakouche

Bounoughaz

2017

Journal of Electrochemical Science and Technology

View full text Add to dashboard Cite

The valorization of domestic wastes becomes a very important research axis that can reduce the energy consumption and protect our environment. The objective of this study is to remove zinc ions from wastewater by using banana peels after their activation as sensor in the working electrode for an environmental application. Banana peels were dried, crushed and treated with sulfuric acid then mixed with polyaniline to improve their electrical conductivity. Cyclic voltammetry and chronoamperometry were used for electrochemistry tests. The obtained voltammogramms at well optimized conditions of applied potential of -1.3 V/SCE and initial zinc concentration of 0.2M during 2 hours of electrolysis, showed the reduction peak of the zinc at a potential of -1.14 V/SCE, which confirmed the activity of this electrode. The modeling of experimental data revealed that the adsorption was fitted by the Langmuir isotherm with a maximal adsorption capacity of 3.4188 mg/g. Changes in the structure of the powder after the electrosorption was noticed by SEM and EDX. Finally, the dosage of the electrolytic solution showed a diminution of the zinc concentration with yield of 99.99%.

show abstract

Walnut shell supported nanoscale Fe⁰ for the removal of Cu(II) and Ni(II) ions from water

Yang

Sun

et al. 2015

J of Applied Polymer Sci

View full text Add to dashboard Cite

The walnut shell supported nanoscale zero‐valent iron (walnut‐nZVI) was prepared from sodium borohydride, iron(II) chloride tetrahydrate, and walnut shell by liquid phase chemical reduction and characterized by FTIR, TEM, and XRD. The composites were tested as adsorbent for the removal of Cu(II) or Ni(II) ions. The equilibrium data were analyzed by the Langmuir, Freundlich, Dubinin–Radushkevich, which revealed that Langmuir isotherm was more suitable for describing Cu(II) and Ni(II) ions adsorption than the other two isotherm models. The results indicated that the maximum adsorption capacity was higher than some other modified biomass waste adsorbents under the proposed conditions, were 458.7, 327.9 mg g−1 for Cu(II) or Ni(II). The adsorption kinetics data indicated that the adsorption fitted well with the pseudo‐second‐order kinetic model. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43304.

show abstract

The reactive surface of Castor leaf [Ricinus communis L.] powder as a green adsorbent for the removal of heavy metals from natural river water

Cited by 54 publications

References 35 publications

Characterization of Corn (Zea mays) Leaf Powder and Its Adsorption Properties Regarding Cu(II) and Cd(II) from Aqueous Samples

Characterization of Corn (Zea mays) Leaf Powder and Its Adsorption Properties Regarding Cu(II) and Cd(II) from Aqueous Samples

Electrosorption Removal of the Zinc Ions from Aqueous Solution on an Artificial Electrode based in the Banana Wastes

Walnut shell supported nanoscale Fe⁰ for the removal of Cu(II) and Ni(II) ions from water

Contact Info

Product

Resources

About

The reactive surface of Castor leaf [Ricinus communis L.] powder as a green adsorbent for the removal of heavy metals from natural river water

Cited by 54 publications

References 35 publications

Characterization of Corn (Zea mays) Leaf Powder and Its Adsorption Properties Regarding Cu(II) and Cd(II) from Aqueous Samples

Characterization of Corn (Zea mays) Leaf Powder and Its Adsorption Properties Regarding Cu(II) and Cd(II) from Aqueous Samples

Electrosorption Removal of the Zinc Ions from Aqueous Solution on an Artificial Electrode based in the Banana Wastes

Walnut shell supported nanoscale Fe0 for the removal of Cu(II) and Ni(II) ions from water

Contact Info

Product

Resources

About

Walnut shell supported nanoscale Fe⁰ for the removal of Cu(II) and Ni(II) ions from water