SPOTTED GOLDEN THISTLE STALKS AS A NOVEL LOW-COST SORBENT FOR METHYLENE BLUE SORPTION FROM SYNTHETIC AQUEOUS SOLUTIONS: EQUILIBRIUM AND KINETICS STUDIES

Core-shell structured hydroxyapatite (HA)/meso-silica was prepared and used as absorbance of methylene blue (MB). HA/meso-silica was synthesized in three steps: preparation of nano-sized HA by wet precipitation method, coating of dense silica and deposition of meso-silica shell on HA. As-received samples were characterized by Fourier transformed infare spectra, small angle X-ray diffraction, nitrogen adsorption-desorption isotherm and transmission electron microscopy. A wormhole framework mesostructure was found for HA/meso-silica. The specific surface area and pore volume were 128 m2•g-1 and 0.36 cm3•g-1, respectively. From the adsorption isotherm, HA/meso-silica with the great specific surface area exhibited a prominent adsorption capacity of MB (134.0 mg/g) in comparison with bare HA (0 mg/g). This study might shed light on surface modification of conventional low-cost adsorbents for removal of organic pollutants from aqueous solutions.

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Potential of Iron Pillared Clay as Active Nanocatalyst for Rapid Decolorization of Methylene Blue

Science & Technology Journal ◽

10.22232/stj.2019.07.02.05 ◽

2019 ◽

Vol 7 (2) ◽

pp. 46-53

Author(s):

Lal hmunsiama ◽

◽

Seung-Mok Lee ◽

Keyword(s):

Methylene Blue ◽

Iron Oxide ◽

Aqueous Solutions ◽

Low Cost ◽

Analytical Data ◽

Bentonite Clay ◽

Pillared Clay ◽

Oh Radicals ◽

Heterogeneous Structure ◽

Iron Oxide Particles

In this study, the iron-pillared clay nanocatalyst (ICN) was employed as a nanocatalyst for decolorization of methylene blue (MB) in aqueous solutions without hydrogen peroxide. The changes in clay structure after the incorporation of iron-oxide particles was studied with the help of XRD analytical data. The SEM micrographs showed higher heterogeneous structure of ICN compared to pristine clay and the specific surface area of ICN (82.54 m2/g) is considerably higher than the unmodified clay (63.41 m2/g). Further, the EDX analytical data indicate the successful incorporation of iron-oxide into bentonite clay. Batch experiments showed that ICN could degrade MB within pH 3.0 to 11.0 and it is efficient even at higher concentrations. The degradation is very fast and more than 90% is removed within 30 mins. A small amount of ICN is effective for degradation of MB and the reusability test showed that ICN can be reuse for several times for the degradation of MB in aqueous solutions. The effect of scavengers studies indicate that the ·OH radicals generated from the ICN are responsible in the degradation of MB. This study indicates that ICN must be low cost and environmentally friendly active nanocatalyst for degradation of MB present in aquatic environment.

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Equilibrium and kinetics studies for the adsorption of Basic Red 46 on nickel oxide nanoparticles-modified diatomite in aqueous solutions

Journal of the Taiwan Institute of Chemical Engineers ◽

10.1016/j.jtice.2014.02.020 ◽

2014 ◽

Vol 45 (4) ◽

pp. 1792-1802 ◽

Cited By ~ 36

Author(s):

Reza Khalighi Sheshdeh ◽

Mohammad Reza Khosravi Nikou ◽

Khashayar Badii ◽

Nargess Yousefi Limaee ◽

Gelayol Golkarnarenji

Keyword(s):

Aqueous Solutions ◽

Nickel Oxide ◽

Oxide Nanoparticles ◽

Nickel Oxide Nanoparticles ◽

Kinetics Studies ◽

Equilibrium And Kinetics ◽

Basic Red 46 ◽

Modified Diatomite

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Removal of Methylene Blue from Waste Water Using Activated Carbon Prepared from Rice Husk

Dhaka University Journal of Science ◽

10.3329/dujs.v60i2.11491 ◽

2012 ◽

Vol 60 (2) ◽

pp. 185-189 ◽

Cited By ~ 42

Author(s):

Mohammad Arifur Rahman ◽

S. M. Ruhul Amin ◽

A. M. Shafiqul Alam

Keyword(s):

Waste Water ◽

Methylene Blue ◽

Activated Carbon ◽

Aqueous Solutions ◽

Rice Husk ◽

Flow Rate ◽

Activated Carbons ◽

Low Cost ◽

Waste Water Treatment ◽

Blue Dye

The possible utilization of rice husk activated carbon as an adsorbent for the removal of methylene blue dye from aqueous solutions has been investigated. In this study, activated carbons, prepared from low-cost rice husk by sulfuric acid and zinc chloride activation, were used as the adsorbent for the removal of methylene blue, a basic dye, from aqueous solutions. Effects of various experimental parameters, such as adsorbent dosage and particle size, initial dye concentration, pH and flow rate were investigated in column process. The maximum uptakes of methylene blue by activated rice husk carbon at optimized conditions (particle sizes: 140 ?m; Flow rate: 1.4 mL/min; pH: 10.0; initial volume of methylene blue: 50 mL and initial concentration of methylene blue: 4.0 mg/L etc.) were found to 97.15%. The results indicate that activated carbon of rice husk could be employed as low-cost alternatives to commercial activated carbon in waste water treatment for the removal of basic dyes. This low cost and effective removal method may provide a promising solution for the removal of crystal violet dye from wastewater.DOI: http://dx.doi.org/10.3329/dujs.v60i2.11491 Dhaka Univ. J. Sci. 60(2): 185-189, 2012 (July)

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Efficiency of almond gum as a low-cost adsorbent for methylene blue dye removal from aqueous solutions

Industrial Crops and Products ◽

10.1016/j.indcrop.2015.06.007 ◽

2015 ◽

Vol 74 ◽

pp. 903-911 ◽

Cited By ~ 43

Author(s):

Fatma Bouaziz ◽

Mohamed Koubaa ◽

Fatma Kallel ◽

Fatma Chaari ◽

Dorra Driss ◽

...

Keyword(s):

Methylene Blue ◽

Aqueous Solutions ◽

Dye Removal ◽

Low Cost ◽

Blue Dye ◽

Methylene Blue Dye

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Efficacy of Mangrove (Rhizophora Mucronata) Roots Powder in Adsorption of Lead (II) Ions from Aqueous Solutions: Equilibrium and Kinetics Studies

IOSR Journal of Applied Chemistry ◽

10.9790/5736-0908024551 ◽

2016 ◽

Vol 09 (08) ◽

pp. 45-51

Author(s):

Fidelis Ngugi ◽

John Mmari Onyari ◽

John Namakwa Wabomba

Keyword(s):

Aqueous Solutions ◽

Rhizophora Mucronata ◽

Kinetics Studies ◽

Equilibrium And Kinetics

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Comparison of novel Ziziphus lotus adsorbent and industrial carbon on methylene blue removal from aqueous solutions

Water Science & Technology ◽

10.2166/wst.2018.481 ◽

2018 ◽

Vol 78 (10) ◽

pp. 2055-2063

Author(s):

Asmaa Msaad ◽

Mounir Belbahloul ◽

Samir El Hajjaji ◽

Abdeljalil Zouhri

Keyword(s):

Methylene Blue ◽

Activated Carbon ◽

Aqueous Solutions ◽

Low Cost ◽

Sorption Process ◽

Second Order ◽

Order Kinetic ◽

Industrial Carbon ◽

Freundlich Isotherms ◽

Pseudo Second Order

Abstract In this work, the use of a novel low-cost adsorbent derived from Ziziphus lotus (ZL) and industrial carbon (IC) has been successfully applied to the removal of methylene blue (MB) from aqueous solutions. The efficiency of this material was studied through Lagergren pseudo-first-order and pseudo-second-order kinetic models. The process for the novel activated carbon and the IC were best represented by the pseudo-second-order rate model. Langmuir and Freundlich isotherms were used to describe the sorption equilibrium data. The Langmuir model turned out to be the most adequate and maximum capacities were measured to be 833.33 and 142.85 mg.g−1 for ZL activated carbon and IC from Sigma Aldrich, respectively. The thermodynamic study revealed that the sorption process is spontaneous and endothermic for the two adsorbents. To explain the effectiveness of MB removal, ZL activated carbon was characterized by scanning electron microscopy, Brunauer–Emmett–Teller surface area, X-ray diffraction and Fourier transform infrared spectroscopy.

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