Multi‐responses optimization of simultaneous adsorption of methylene blue and malachite green dyes in binary aqueous system onto Ni:FeO(OH)‐NWs‐AC using experimental design: derivative spectrophotometry method

2017 ◽  
Vol 32 (3) ◽  
pp. e4148 ◽  
Author(s):  
Ali Alipanahpour Dil ◽  
Azam Vafaei ◽  
Abdol Mohammad Ghaedi ◽  
Mehrorang Ghaedi ◽  
Ebrahim Alipanahpour Dil
Keyword(s):  
Methylene Blue ◽  
Experimental Design ◽  
Malachite Green ◽  
Aqueous System ◽  
Derivative Spectrophotometry ◽  
Simultaneous Adsorption

Experimental design for simultaneous analysis of malachite green and methylene blue; derivative spectrophotometry and principal component-artificial neural network

RSC Advances ◽  
2015 ◽  
Vol 5 (49) ◽  
pp. 38939-38947 ◽  
Author(s):  
M. Ghaedi ◽  
S. Hajati ◽  
M. Zare ◽  
M. Zare ◽  
S. Y. Shajaripour Jaberi
Keyword(s):  
Neural Network ◽  
Carbon Nanotubes ◽  
Methylene Blue ◽  
Artificial Neural Network ◽  
Experimental Design ◽  
Malachite Green ◽  
Competitive Adsorption ◽  
Principal Component ◽  
Multiwalled Carbon ◽  
Oxidized Multiwalled Carbon Nanotubes

In this study, oxidized multiwalled carbon nanotubes (MWCNT) with sizes in the range of 10–30 nm were efficiently applied for simultaneous and competitive adsorption of malachite green (MG) and methylene blue (MB).

Photocatalytic activity of polyaniline and neutral polyaniline for degradation of methylene blue and malachite green dyes under UV Light

2021 ◽  
Vol 78 (5) ◽  
pp. 2849-2865
Author(s):  
Bircan Haspulat Taymaz ◽  
Recep Taş ◽  
Handan Kamış ◽  
Muzaffer Can
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Malachite Green ◽  
Uv Light

scholarly journals Determination of lethal concentration and antibacterial activity of commonly used disinfectants

1970 ◽  
Vol 1 (4) ◽  
pp. 102-105 ◽  
Author(s):  
M Alam ◽  
MM Rahman ◽  
MJ Foysal ◽  
MN Hossain
Keyword(s):  
Methylene Blue ◽  
Pseudomonas Fluorescens ◽  
Potassium Permanganate ◽  
Malachite Green ◽  
Copper Sulfate ◽  
Pathogenic Bacteria ◽  
Labeo Rohita ◽  
Inhibitory Effect ◽  
Lethal Concentration

The toxic effects of four disinfectants viz., copper sulfate (CuSO4), potassium permanganate (KMnO4), methylene blue and malachite green on fish and fish pathogenic bacteria Aeromonas sp., Pseudomonas fluorescens, Edwardsiella sp. and Flavobacterium sp. were investigated. Lethal concentration of the disinfectants to fingerlings of Labeo rohita was determined in aquarium by standard method. Lethal concentration of copper sulfate (CuSO4), potassium permanganate (KMnO4), methylene blue and malachite green against fish were found in 0.75ppm, 7ppm, 6ppm and 0.5ppm at 21.4hrs, 18hrs, 9.5hrs and 1.40hrs, respectively. Methylene blue at 4ppm and 5ppm concentration inhibited the growth of Pseudomonas fluorescens and 6ppm concentration suppressed the growth of Aeromonas sp. Copper sulfate (CuSO4) was effective only against Edwardsiella sp at concentration of 10ppm and 8ppm. Malachite green repressed the growth of all four tasted bacteria at a concentration of 1ppm. Potassium permanganate (KMnO4) was failed to exhibit any inhibitory effect on the bacteria even at 30ppm concentration. DOI: http://dx.doi.org/10.3329/ijns.v1i4.9738 IJNS 2011 1(4): 102-105

Ouricuri (Syagrus coronata) fiber: a novel biosorbent to remove methylene blue from aqueous solutions

2016 ◽  
Vol 75 (1) ◽  
pp. 106-114 ◽  
Author(s):  
Lucas Meili ◽  
Társila Santos da Silva ◽  
Daniely Carlos Henrique ◽  
João Inácio Soletti ◽  
Sandra Helena Vieira de Carvalho ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Experimental Design ◽  
Aqueous Solutions ◽  
Adsorption Capacity ◽  
Adsorption Process ◽  
Fiber Diameter ◽  
Aqueous Media ◽  
Process Efficiency ◽  
Maximum Adsorption Capacity ◽  
Equilibrium Studies

In this work, the potential of ouricuri (Syagrus coronata) fiber as a novel biosorbent to remove methylene blue (MB) from aqueous solutions was investigated. The fiber was prepared and characterized according to the fundamental features for adsorption. A 23 experimental design was used to evaluate the effects of adsorbent dosage (M), fiber diameter (D) and agitation (A) on the adsorption capacity. In the more adequate conditions, kinetic and equilibrium studies were performed. The experimental design results showed that M = 10 g L−1), D = 0.595 mm and A = 200 rpm were the more adequate conditions for MB adsorption. Based on the kinetic study, it was found that the adsorption process was fast, being the equilibrium was attained at about 5 min, with 90% of color removal. The isotherm was properly represented by the Sips model, and the maximum adsorption capacity was 31.7 mg g−1. In brief, it was demonstrated that ouricuri fiber is an alternative biosorbent to remove MB from aqueous media, taking into account the process efficiency and economic viewpoint.

Synthesis and Characterization of Poly(azomethine)/ZnO Nanocomposite Toward Photocatalytic Degradation of Methylene Blue, Malachite Green, and Bismarck Brown

2019 ◽  
Vol 141 (5) ◽  
Author(s):  
S. J. Pradeeba ◽  
K. Sampath
Keyword(s):  
Methylene Blue ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Malachite Green ◽  
Fourier Transform Infrared ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Natural Sunlight ◽  
Uv Visible

This research was carried out based on the significance of protecting the environment by preventing the contamination of water caused from effluents discharge from dyeing industries, effective nanocomposite were prepared to solve this problem. The poly(azomethine), ZnO, and poly(azomethine)/ZnO nanocomposites were prepared and characterized by Fourier transform-infrared spectroscopy, ultraviolet (UV)–visible spectroscopy, powder X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDAX), scanning electron Microscope (SEM), and transmission electron microscopy (TEM) techniques. Methylene blue (MB), Malachite green (MG), and Bismarck brown (BB) were degraded from water using poly(azomethine) (PAZ), zinc oxide (ZnO), PAZ/ZnO (PNZ) nanocomposites as photocatalyst in the presence of natural sunlight. The degradation efficiency and reaction kinetics were calculated, and the outcome of the photocatalytic experiments proved that the PAZ/ZnO nanocomposites reveals excellent photocatalytic activity and effective for decolorization of dye containing waste water than PAZ and ZnO in the presence of natural sunlight. The maximum degradation efficiency 97%, 96%, and 95% was obtained for PNZ nanocomposites at optimum dosage of catalyst as 500 mg and 50 ppm of MB, MG, and BB dye concentration, respectively. The maximum degradation time was 5 h. After photocatalytic study, the samples were characterized by Fourier-transform infrared spectroscopy (FT-IR) and UV–visible spectroscopy.

Two-fold 2D + 2D → 2D interweaved rhombus (4,4) grid: synthesis, structure, and dye removal properties in darkness and in daylight

2019 ◽  
Vol 48 (3) ◽  
pp. 1095-1107 ◽  
Author(s):  
Meng-Jung Tsai ◽  
Jheng-Hua Luo ◽  
Jing-Yun Wu
Keyword(s):  
Methylene Blue ◽  
Methyl Orange ◽  
Malachite Green ◽  
Dye Removal ◽  
Acid Orange 7 ◽  
High Adsorption ◽  
Acid Orange ◽  
Adsorption Capacities

A rhombus (4,4) grid showing two-fold 2D + 2D → 2D interweaved nets appeared to be a good adsorbent to selectively adsorb and separate anionic methyl orange (MO) and acid orange 7 (AO7) dyes over cationic methylene blue (MB) and malachite green (MG) from water with high adsorption capacities in both darkness and daylight.

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