Adsorption of rhodamine B and methylene blue dyes using waste of seeds of Aleurites Moluccana, a low cost adsorbent

In this work, metal organic framework (MIL-68(Al)), was synthesized by a simple, fast and low-cost process for simultaneous removal of methylene blue and Rhodamine B, regarded to be toxic and even carcinogenic, from aqueous solution.

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PREPARACIÓN DE FILTROS DE ADSORCIÓN A BASE DE ARCILLAS MODIFICADAS

Revista ECIPeru ◽

10.33017/reveciperu2007.0005/ ◽

2019 ◽

pp. 18-21

Keyword(s):

Methylene Blue ◽

Rhodamine B ◽

Adsorption Process ◽

Low Cost ◽

Industrial Effluents ◽

Low Degree ◽

Natural Clays ◽

Ph Range ◽

Red Dye ◽

Acid Red G

PREPARACIÓN DE FILTROS DE ADSORCIÓN A BASE DE ARCILLAS MODIFICADAS PREPARATION OF FILTERS ADSORPTION-BASED MODIFIED CLAYS María del Rosario Sun Kou, José Inga, Abel Gutarra DOI: https://doi.org/10.33017/RevECIPeru2007.0005/ RESUMEN La cantidad de contaminantes textiles (colorantes, surfactantes, fenoles entre otros) se ha incrementado en los últimos años en el Perú debido al aumento en los volúmenes de exportación, La adsorción es uno de los métodos más ampliamente usados para minimizar el grado de contaminación en los efluentes industriales, esto a motivado el desarrollo de materiales abundantes y de bajo costo que puedan ser utilizados como adsorbentes. Para este trabajo se ha empleado bentonitas peruanas, sódicas (LI-01 y LI-03) y cálcicas (HU-01 y HU-02), modificadas por termoactivación con HCl y H2SO4. Estos materiales fueron probados en la adsorción de diferentes colorantes: Rojo 80, Rhodamine B, rojo ácido G, azul de metileno. Comparada con la arcilla natural, la muestra termoactivada LI-03 incrementó su poder de adsorción en 13 veces, mientras la muestra HU-01 el incremento fue de 11 veces. El proceso de adsorción se produjo a pH entre 3 y 4 y cuando fue adicionado electrolitos a la solución coloreada.El mejor método encontrado para la preparación de los filtros de adsorción a base de arcillas termoactivadas fue el de la esponja polimérica con tratamientos térmicos entre 500 a 980°C. Los filtros preparados adsorbieron el 100% del colorante Rhodamine B y del azul de metileno. La adsorción se logró en menor grado con los colorantes rojo 80 y rojo ácido G. Palabras claves: adsorción, filtros de adsorción, arcillas termoactivadas, colorantes textiles. ABSTRACT During the last years in Perú the amount of textile contamination (dyes, surfactants, phenols among others) has increased due to the increase in export volumes.Adsorption is one of the methods most often used to minimize the grade of contamination in industrial effluents, and it has encouraged the development of abundant materials wich are low cost and so they could be used as adsorbents. For this work has been used peruvian bentonites, sodium (LI-01 and LI-03) and calcium (HU-01 and HU-02), modified by thermo-activation with HCl and H2SO4. These materials were tested in the adsorption of several dyes: Red 80, Rhodamine B, Acid Red G, methylene blue. A sample of thermo-activated LI-03 increased its power of adsorption thirteen times compared with the natural clays, on the other hand in the case of HU-01 increase was eleven times. The adsorption process is produced in pH range of 3 - 4 when electrolytes were added into dye solution.The best method found for the preparation of filters of adsorption from thermo-activated clays was the polymer sponge with thermic treatment in the range of 500 - 980ºC. Prepared filters adsorbed 100% of dyes: Rhodamine B and Methylene Blue. The adsorption got in low degree with Red dye 80 and Acid Red G. Keywords: Adsorption, filters of adsorption, thermo-activated clays, textile dyes.

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Structural, Morphological and Optical Bandgap Analysis of Multifunction Applications of Y2O3 -ZnO Nanocomposites : Varistors and Visible Photocatalytic Degradations of Wastewater

10.21203/rs.3.rs-391412/v1 ◽

2021 ◽

Author(s):

T.H AlAbdulaal ◽

Manal AlShadidi ◽

Mai Hussien ◽

Ganesh Vanga ◽

Abdel-Fatah Bouzidi ◽

...

Keyword(s):

Methylene Blue ◽

Photocatalytic Degradation ◽

Rhodamine B ◽

Diffuse Reflectance Spectroscopy ◽

Organic Dyes ◽

Low Cost ◽

Combustion Method ◽

Ac Electrical Conductivity ◽

Nanoparticle Structure ◽

Yttrium Doping

Abstract In this study, a combustion method as an efficient, easy, low-cost, and eco-friendly technique was used to synthesize nano-ZnO as a matrix with different yttrium doping ratios with different doping concentrations. Not only X-ray diffraction (XRD), but also scanning electron microscopy (SEM), and Fourier transformation Infrared spectroscopy (FT-IR) technique employed to characterize the structural and surface morphology of the Y2O3-ZnO nanocomposites. The obtained results supported ZnO's growth from crystalline to satisfactory nanoparticle structure by changing the yttrium doping concentrations inside ZnO nanoparticles. Moreover, UV-Vis diffuse reflectance spectroscopy, AC electrical conductivity, and current-voltage characteristics were considered to characterize the effects of yttrium doping on the energy bandgaps and electrical/dielectric properties and discussed the parameters of the ceramic varistors of the studied Y2O3-ZnO nano-complex oxides. The photocatalytic degradation efficiency of phenol, Methylene Blue, and Rhodamine B was investigated using all prepared Y2O3-ZnO nanostructured samples. As the yttrium doping ratios increased, the photocatalytic efficiency increased. After the addition of moderate Y3+ ions-doping, Further generation of hydroxyl radicals over ZnO. For Y2O3-ZnO (S5), the optimal photocatalyst is a degradation of 100 % of phenol, Methylene Blue, and Rhodamine B solutions compared to 80% of photocatalysis for ZnO stand alone. The prepared Y2O3-ZnO nanostructured materials are considered novel potential candidates in broad nano-applications ranging from biomedical and photocatalytic degradation for organic dyes and phenol to environmental and varistor applications.

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

Environmental Engineering and Management Journal ◽

10.30638/eemj.2019.067 ◽

2019 ◽

Vol 18 (3) ◽

pp. 737-747 ◽

Cited By ~ 1

Author(s):

Houcine Benaissa ◽

Zoubida Senouci Bereksi

Keyword(s):

Methylene Blue ◽

Aqueous Solutions ◽

Low Cost ◽

Kinetics Studies ◽

Equilibrium And Kinetics

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Synergistic and Competitive Adsorption of Methylene Blue and Rhodamine B on Core-shell Magnetic Manganese Dioxide Nanocomposites

Current Nanoscience ◽

10.2174/1573413713666170706112204 ◽

2017 ◽

Vol 13 (6) ◽

Cited By ~ 1

Author(s):

Linshan Wang ◽

Cholhwan Kim ◽

Xinyue Zhang ◽

Carlos Fernandez ◽

Ting Sun ◽

...

Keyword(s):

Methylene Blue ◽

Manganese Dioxide ◽

Rhodamine B ◽

Competitive Adsorption ◽

Core Shell

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A 3D 2-fold interpenetrating Cu(II) coordination polymer based on 4,4′-oxybis(benzoic acid) and 1,3-bis(2-methyl-imidazol-1-yl) benzene exhibiting photocatalytic properties

Zeitschrift für Naturforschung B ◽

10.1515/znb-2020-0085 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Shan-Bao Qiao

Keyword(s):

Methylene Blue ◽

Coordination Polymer ◽

Benzoic Acid ◽

Rhodamine B ◽

Photocatalytic Properties

Abstract A new Cu(II) complex, [Cu2(1,3-BMIB)(OBA)2] n (1) (1,3-BMIB = 1,3-bis(2-methyl-1H-imidazol-1-yl)benzene, H2OBA = 4,4′-oxybis(benzoic acid)) was hydrothermally synthesized and has been structurally characterized. Complex 1 possesses a 3D 2-fold interpenetrating framework based on [Cu(OBA)] n layers with a Schläfli symbol {412.63}. Complex 1 displays excellent photocatalytic properties in the degradation of methylene blue (MB) and rhodamine B (RhB).

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