scholarly journals Synthesis, characterization and adsorption studies of nano-composite hydrogels and the effect of SiO2 on the capacity for the removal of Methylene Blue dye

2020 ◽  
Vol 85 (7) ◽  
pp. 939-952
Author(s):  
Sinan Temel ◽  
Elif Yaman ◽  
Nurgul Ozbay ◽  
Gokmen Ozge
Keyword(s):  
Methylene Blue ◽  
Dye Removal ◽  
Sio2 Nanoparticles ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Nano Composite ◽  
Nanocomposite Hydrogels ◽  
Infra Red ◽  
Ft Ir ◽  
Nitrogen Contents

Nanocomposite hydrogels were produced by free radical polymerization of acrylic acid and N-vinylpyrrolidone in the presence of SiO2 nanoparticles. The chemical and morphological structures of the hydrogels were determined using Fourier transform infra-red spectroscopy (FT-IR) and field emission scanning electron microscopy (FESEM). The nanocomposite hydrogels were used for the adsorption and desorption of Methylene Blue dye from wastewater. Wastewater was referred to distilled water that contained Methylene Blue dye under laboratory conditions. The carbon, hydrogen and nitrogen contents of the dye, hydrogels and dye-adsorbed hydrogels were determined by elemental analysis. The influences of SiO2 nanoparticles and copolymerization on the adsorption capacity were studied. The maximum dye removal of 98.3 % was obtained with AA-co-VP (3:1) copolymeric hydrogel. The synthesized hydrogels could be evaluated as adsorbents in wastewater treatment, effectively.

Kinetics of methylene blue dye adsorptive removal using halloysite nanocomposite hydrogels

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sadia Ata ◽  
Sadaf Amin ◽  
Ismat Bibi ◽  
Ijaz-ul- Mohsin ◽  
Atif Islam ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Polymer Chains ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Nanocomposite Hydrogels ◽  
Antimicrobial Efficiency ◽  
Nano Clay ◽  
Swelling Capacity ◽  
Solution Casting Method ◽  
Adsorption Desorption

Abstract In the present work, halloysite nano-clay (HNTs) based hydrogel was fabricated and their efficiency for the removal of methylene blue dye was studied. The hydrogel films were prepared with varying amount of halloysite nano-clay via facile solution casting method. Effect of halloysite clay on adsorption performance of composite was investigated. The hydrophobic thermoplastic synthetic polymer, polylactic acid (PLA) was blended with hydrophilic polymer polyvinyl alcohol (PVA) and HNTs to synthesize hydrogels. Swelling behavior and antimicrobial efficiency was also evaluated. The halloysite incorporating films showed excellent antibacterial activity. Swelling capacity of hydrogel with increased halloysite content was reduced due to increased crosslinking among polymer chains. Halloysite incorporated hydrogel exhibited higher adsorption ability as compared to film comprising of only PVA and PLA and dye removal followed pseudo first order kinetics. Film with 0.03 g HNTs rapidly attained adsorption-desorption equilibria and removed the dye completely within 30 min. Results confirmed that synthesized film could be potentially used for the removal of cationic dye and fabricated hydrogel film have promising potential for wastewater treatment since a higher adsorption capacity was observed for halloysite nano-clay incorporated hydrogel.

A new electrode reactor with in-built recirculation mode for the enhancement of methylene blue dye removal from the aqueous solution: Comparison of adsorption, electrolysis and combined effect

2013 ◽  
Vol 31 (2) ◽  
pp. 276-283 ◽  
Author(s):  
Ponnusamy Senthil Kumar ◽  
Maria Jacob Stani Raja ◽  
Mahathevan Kumaresan ◽  
Dinesh Kumar Loganathan ◽  
Prabhakaran Chandrasekaran
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Dye Removal ◽  
Combined Effect ◽  
Blue Dye ◽  
Methylene Blue Dye

scholarly journals STUDIES ON EFFECT OF ADSORPTION PARAMETERS FOR THE METHYLENE BLUE DYE REMOVAL BY USING LOWCOST ADSORBENT

2021 ◽  
Vol 14 (03) ◽  
Author(s):  
Ravi Vital Kandisa ◽  
Narayana Saibaba KV ◽  
Khasim Beebi Shaik ◽  
R. Gopinadh
Keyword(s):  
Methylene Blue ◽  
Dye Removal ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Adsorption Parameters

Synthesis of Adsorbent from Bagasse for Methylene Blue Adsorption

2021 ◽  
Vol 7 (2) ◽  
pp. 188-195
Author(s):  
Nurhasni Nurhasni ◽  
Sariana Harahap ◽  
Ahmad Fathoni ◽  
Hendrawati Hendrawati
Keyword(s):  
Methylene Blue ◽  
Textile Industry ◽  
Contact Time ◽  
Ph Effect ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Batch Method ◽  
Homogeneous Surface ◽  
Dyeing Process ◽  
Ft Ir

The ability of bagasse adsorbents to adsorb methylene blue without activation using 0.5 M H2SO4 solution was examined. Methylene blue is widely used in the textile industry because it produces bright colors, and the dyeing process is fast and easy. This research aims to determine the optimum adsorption conditions, namely the variations in contact time, dye concentration, adsorbent mass, and pH effect on methylene blue, which were carried out using the batch method. Furthermore, the adsorbents were characterized by FT-IR and SEM. The optimum state of the bagasse adsorbent to adsorb methylene blue dye has a mass of 0.5 grams, a contact time of 30 minutes, a concentration of 50 ppm, and a pH of 5. The character of the adsorbent after activation with H2SO4 was better than without activation. The highest adsorption efficiency of methylene blue dye in the batch method was 99.67%. The FTIR spectrum of the bagasse adsorbent showed OH, C-H, C=O, C=C, and C-O functional groups. The adsorption isotherm model for methylene blue dye follows the Langmuir isotherm since the graph obtained is linear with the correlation coefficient (R2) = 1, where the adsorbent has a homogeneous surface.

Lead ions and methylene blue dye removal from aqueous solution by mucuna beans (velvet beans) adsorbents

2020 ◽  
Vol 8 (2) ◽  
pp. 103557 ◽  
Author(s):  
Ntaote David Shooto ◽  
Patience Mapule Thabede ◽  
Blessing Bhila ◽  
Harry Moloto ◽  
Eliazer Bobby Naidoo
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Dye Removal ◽  
Lead Ions ◽  
Blue Dye ◽  
Methylene Blue Dye
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