Comparison of the efficiency of palladium and silver nanoparticles loaded on activated carbon and zinc oxide nanorods loaded on activated carbon as new adsorbents for removal of Congo red from aqueous solution: Kinetic and isotherm study

Ghaedi, Mehrorang; Biyareh, Mehdi Nejati; Kokhdan, Syamak Nasiri; Shamsaldini, Shahdokht; Sahraei, Reza; Daneshfar, Ali; Shahriyar, S.

doi:10.1016/j.msec.2012.01.015

Cited by 173 publications

(64 citation statements)

References 51 publications

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“…Silver nanoparticle synthesized was conducted with reduction process similar to Gaedhi's method [8] in the previous paper [7]. As much 4 mL of 0.1 M AgNO 3 added to 1 L of an aqueous solution with 0.15 wt% of the soluble starch.…”

Section: Synthesis Adsorbentmentioning

confidence: 99%

Adsorptive Removal of Formaldehyde by Chemically Bamboo Activated Carbon with addition of Ag nanoparticle: Equilibrium and Kinetic

Rengga

Sudibandriyo

Nasikin

2016

MATEC Web of Conferences

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Abstract. Carbon was prepared from dried waste bamboo (Dendrocalamus asper) using chemical activation with KOH. The carbon was prepared with the activating agent in a mass ratio of KOH and dried bamboo (3:1) at 800oC. Using impregnation technique, the bamboo-based activated carbon has developed with modified Ag nanoparticle (Ag-AC) to capture formaldehyde. The Ag-AC has characteristics of moderate surface area of 685 m2/g and average pore size of 2.7 nm. The adsorption equilibriums and kinetics of formaldehyde on Ag-AC measured. The influences of initial formaldehyde on adsorption performance have measured in a batch system. The equilibrium data were evaluated by isotherm models of Langmuir, Freundlich, and Temkin. The Langmuir model well describes the adsorptive removal of formaldehyde on Ag-AC in this study. Pseudo-first-order and pseudo-second-order kinetic equations were applied to test the experimental data. The pseudo-second-order exhibited the best fit for kinetic study.

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Section: Synthesis Adsorbentmentioning

confidence: 99%

Adsorptive Removal of Formaldehyde by Chemically Bamboo Activated Carbon with addition of Ag nanoparticle: Equilibrium and Kinetic

Rengga

Sudibandriyo

Nasikin

2016

MATEC Web of Conferences

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“…The silver nano-particles were synthesized in reduction process similar to Gaedhi"s method [13]. In this case, 4 mL of 0.1 M AgNO 3 was added into 1 L of an aqueous solution 0.15 wt% of the soluble starch and vigorously stirred for 1 h under inert atmosphere.…”

Section: B Synthesis Of Ac-agmentioning

confidence: 99%

Adsorption of Low-Concentration Formaldehyde from Air by Silver and Copper Nano-Particles Attached on Bamboo-Based Activated Carbon

Rengga¹,

Sudibandriyo²,

Nasikin³

2013

IJCEA

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Abstract-Bamboo based activated carbon (AC) was modified by attaching silver (AC-Ag) and copper (AC-Cu) nano-particles to reduce the low-concentration of formaldehyde in air. Batch isotherm tests were performed to determine the adsorption capacity of each activated carbon. At equilibrium concentration of 8 ppm, AC-Cu adsorbed 29% higher amount of formaldehyde as compared to the original AC. The highest loading amount was obtained for AC-Ag, being around 0.425 mg/g AC-Ag. The concentration of formaldehyde removed by the AC-Ag was 1.6 times higher than the virgin AC at the same equilibrium concentration.Index Terms-Formaldehyde, activated carbon, bamboo, silver nano-particles.

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“…Most of these methods have limitations because of high capital investment, operating costs, and ineffectiveness in meeting the environmental regulations (11). Adsorption technique is widely used to remove toxic heavy metal ions from the water, using different adsorbents (12).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of DNPH/SDS/Fe3O4 Nanoparticles for Removal of Cr (VI) Ions From Aqueous Solution

Sobhanardakani¹,

Zandipak²,

Cheraghi³

2016

Avicenna J Environ Health Eng

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In this study, sodium dodecyl sulfate (SDS) coated magnetite modified with 2, 4-Dinitrophenylhydrazine was used to remove Cr (VI) ions from aqueous solution. The modified magnetite nanoparticles were characterized by X-ray diffraction (XRD) analysis, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and SEM-EDXS measurement. The synthesized nanoparticles exhibited a high surface area of 75.5 m 2 g -1 and were of 20 -35 nm in particle size. The effects of parameters, including pH, dose of adsorbent, temperature and contact time were investigated to find the optimum adsorption conditions. Adsorption data fits well with the Langmuir isotherm model with a maximum adsorption capacity (qm) and a Langmuir adsorption equilibrium constant (b) of 169.5 mg g -1 and 0.168 L mg -1 , respectively. The adsorption kinetic agrees well with pseudo-second-order model.

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Comparison of the efficiency of palladium and silver nanoparticles loaded on activated carbon and zinc oxide nanorods loaded on activated carbon as new adsorbents for removal of Congo red from aqueous solution: Kinetic and isotherm study

Cited by 173 publications

References 51 publications

Adsorptive Removal of Formaldehyde by Chemically Bamboo Activated Carbon with addition of Ag nanoparticle: Equilibrium and Kinetic

Adsorptive Removal of Formaldehyde by Chemically Bamboo Activated Carbon with addition of Ag nanoparticle: Equilibrium and Kinetic

Adsorption of Low-Concentration Formaldehyde from Air by Silver and Copper Nano-Particles Attached on Bamboo-Based Activated Carbon

Synthesis of DNPH/SDS/Fe3O4 Nanoparticles for Removal of Cr (VI) Ions From Aqueous Solution

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