Synthesis and utilization of chitin–humic acid hybrid as sorbent for Cr(III)

Santosa, Sri Juari; Siswanta, Dwi; Sudiono, Sri; Sehol, Muhamad

doi:10.1016/j.susc.2007.04.161

Cited by 26 publications

(33 citation statements)

References 20 publications

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“…, and the appearance of a new band at 1380 cm −1 (Helal et al 1998;Santosa et al 2008). Absorption bands at 1710 cm −1 and 1620 cm −1 correspond to the stretching and asymmetric stretching vibrations of C=O in -COOH functional groups, while the absorption band at 1380 cm −1 is believed to result from the interaction between the carboxyl group and the metal cation.…”

Section: Removal Of Aucl -4 Ions From Aqueous Solution By Means Of Pementioning

confidence: 99%

Mechanism of the Removal of AuCl⁻₄ Ions from Aqueous Solution by Means of Peat Soil Humin

Santosa

Sudiono

Siswanta

et al. 2011

Adsorption Science & Technology

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Peat soil humin, obtained after the removal of fulvic and humic acid fractions according to the recommended procedure of the International Humic Substances Society (IHSS), has the ability to remove AuCl-4 ions from aqueous solution. The removal was greatest at medium acidity, which was equivalent to pH 2.0, and it was governed by two different processes, i.e. attachment onto un-ionized-COOH groups through hydrogen bonding and reduction to Au metal by the action of the-OH group. Purification of humin through repeated immersion and shaking in a mixed solution consisting of 0.1 M HCl and 0.05 M HF led to the abrupt increase in the-COOH contents from 386 mmol/kg to 2510 mmol/kg, while the content of total-OH functional groups remained relatively constant at values slightly higher than 3000 mmol/kg. The increase in-COOH content improved the removal of AuCl-4 ions from 23 mg/g to 27 mg/g, but it was unfortunately accompanied by a diminished reduction ability to Au metal. Hence, the role of the-COOH functional group in removing AuCl-4 ions through hydrogen bonding was more significant for the purified humin, while that of the-OH group in removing AuCl-4 ions through reduction to Au metal was better for the crude (unpurified) humin.

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Section: Removal Of Aucl -4 Ions From Aqueous Solution By Means Of Pementioning

confidence: 99%

Mechanism of the Removal of AuCl⁻₄ Ions from Aqueous Solution by Means of Peat Soil Humin

Santosa

Sudiono

Siswanta

et al. 2011

Adsorption Science & Technology

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“…Numerous adsorbents have been reported for the removal of toxic metal ions, such as chitin (Santosa et al, 2007), chitosan (Wan Nagh et al, 2002), starch (Delval et al, 2005), cellulose (El-Mensnawy et al, 2008;Gupta et al, 2002;Gerente et al, 2000;Zhou et al, 2004;Guclu et al, 2003), guaran (Singh et al, 1996), and cyclodextrin (Kozlowski et al, 2005), which are not only eco-friendly and cost-effective but are also effective in remediation of common effluents present in wastewater. Other polysaccharide-based materials and alumino-silicates are used as adsorbents in wastewater treatment (Crini, 2005;Aguiar et al, 2002;Rubio et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterisation of tamarind 4-hydroxybenzoic acid (THBA) resin and its use in extraction of heavy metal ions from industrial wastewater

Singh

Kumawat

2012

WSA

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The adsorption of heavy metal cations, Pb(II), Cd(II), Cu(II), Zn(II) and Fe(II) from aqueous solution by newly-synthesized tamarind 4-hydroxybenzoic acid (THBA) resin was investigated. The resin was characterised on the basis of FTIR, elemental analysis, ion-exchange capacity and physico-chemical properties. The distribution coefficients (K d ) and percentage adsorption of metal ions on resin were determined by batch methods using atomic absorption spectrophotometry (AAS). The effect of experimental parameters, such as pH, treatment time, temperature, adsorbent dose, initial metal ion concentration and flow rate, on the removal of metal ions was also studied. THBA resin proved to be an effective adsorbent for the removal of different heavy metal ions from aqueous solution; removal efficiency followed the order: Fe(II) > Cu(II) > Zn(II) > Cd(II) > Pb(II). These results suggest that the cation exchange resin THBA holds great potential to remove cationic heavy metal species from industrial wastewater.

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“…The kinetic study was also performed by using three models. The first-order model was proposed by Santosa 22 which was based on the concentration of the adsorbate in the aqueous phase and can be described by the eq. 2.…”

Section: Adsorption Studymentioning

confidence: 99%

Adsorption Study of Pb(II), Cd(II), Cu(II) and Cr(III) ions in Aqueous Medium using C-4-Hydroxy-3-methoxyphenylcalix[4]resorcinarene Dodecaacetate

Anwar¹,

Jumina²,

Siswanta³

et al. 2017

Orient. J. Chem

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This research work presented the application of C-4-hydroxy-3-methoxyphenylcalix [4] resorcinarenedodecaacetate in the removal of Pb(II), Cd(II), Cu(II) and Cr(III) in aqueous medium. Various adsorption parameter such as pH, adsorbent dose and interaction time were investigated. In addition, the kinetic study was conducted by using Santosa's first order, Lagergren's pseudo-first order and Ho's pseudo-second order models. The results showed that the optimum pH for the sorption of Pb(II) and Cu(II) was 4 and that for Cd(II) and Cr(III) was 5. The optimum adsorbent dosage was 0.0175 g for all the metal ions. While the adsorption kinetic for Cd(II), Cu(II) and Cr(III) was relatively fast, the adsorption of Pb(II) occurred in slower rate. Therefore, the kinetic study be solely performed for the adsorption of Pb(II). The adsorption of Pb(II) followed the pseudo-second order of Ho with the equilibrium adsorption capacity and rate constant of 0.3936 mg/g and 0.0865 g/mg.min. respectively. From this study, C-4-hydroxy-3-methoxyphenylcalix[4]resorcinarenedodecaacetate was expected to become an alternative adsorbent in the removal of heavy metals.

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Synthesis and utilization of chitin–humic acid hybrid as sorbent for Cr(III)

Cited by 26 publications

References 20 publications

Mechanism of the Removal of AuCl⁻₄ Ions from Aqueous Solution by Means of Peat Soil Humin

Mechanism of the Removal of AuCl⁻₄ Ions from Aqueous Solution by Means of Peat Soil Humin

Preparation and characterisation of tamarind 4-hydroxybenzoic acid (THBA) resin and its use in extraction of heavy metal ions from industrial wastewater

Adsorption Study of Pb(II), Cd(II), Cu(II) and Cr(III) ions in Aqueous Medium using C-4-Hydroxy-3-methoxyphenylcalix[4]resorcinarene Dodecaacetate

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Synthesis and utilization of chitin–humic acid hybrid as sorbent for Cr(III)

Cited by 26 publications

References 20 publications

Mechanism of the Removal of AuCl−4 Ions from Aqueous Solution by Means of Peat Soil Humin

Mechanism of the Removal of AuCl−4 Ions from Aqueous Solution by Means of Peat Soil Humin

Preparation and characterisation of tamarind 4-hydroxybenzoic acid (THBA) resin and its use in extraction of heavy metal ions from industrial wastewater

Adsorption Study of Pb(II), Cd(II), Cu(II) and Cr(III) ions in Aqueous Medium using C-4-Hydroxy-3-methoxyphenylcalix[4]resorcinarene Dodecaacetate

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Mechanism of the Removal of AuCl⁻₄ Ions from Aqueous Solution by Means of Peat Soil Humin

Mechanism of the Removal of AuCl⁻₄ Ions from Aqueous Solution by Means of Peat Soil Humin