Poly(N-vinyl caprolactam-co-maleic acid) microparticles for cationic dye removal

2015 ◽  
Vol 73 (5) ◽  
pp. 1283-1301 ◽  
Author(s):  
Irina Popescu ◽  
Dana Mihaela Suflet
Keyword(s):  
Maleic Acid ◽  
Dye Removal ◽  
Cationic Dye

Highly efficient and sustainable alginate/carboxylated lignin hybrid beads as adsorbent for cationic dye removal

2021 ◽  
pp. 104839
Author(s):  
Jong-Chan Kim ◽  
Jungkyu Kim ◽  
Jinseok Park ◽  
Jung-Kwon Oh ◽  
In-Gyu Choi ◽  
...  
Keyword(s):  
Dye Removal ◽  
Cationic Dye ◽  
Highly Efficient

scholarly journals Quercus robur acorn peel as a novel coagulating adsorbent for cationic dye removal from aquatic ecosystems

2017 ◽  
Vol 101 ◽  
pp. 3-8 ◽  
Author(s):  
Saranya Kuppusamy ◽  
Kadiyala Venkateswarlu ◽  
Palanisami Thavamani ◽  
Yong Bok Lee ◽  
Ravi Naidu ◽  
...  
Keyword(s):  
Aquatic Ecosystems ◽  
Quercus Robur ◽  
Dye Removal ◽  
Cationic Dye

Use of superswelling acrylamide/maleic acid hydrogels for monovalent cationic dye adsorption

2001 ◽  
Vol 79 (10) ◽  
pp. 1809-1815 ◽  
Author(s):  
Dursun Saraydin ◽  
Erdener Karada? ◽  
Olgun G�ven
Keyword(s):  
Maleic Acid ◽  
Dye Adsorption ◽  
Cationic Dye

scholarly journals Preparation of Alpinia galangaStem Based Activated Carbon via Single-step Microwave Irradiation for Cationic Dye Removal

2021 ◽  
Vol 50 (8) ◽  
pp. 2251-2269
Author(s):  
N.A. Ahammad ◽  
M.F.M. Yusop ◽  
A.T. Mohd Din ◽  
M.A. Ahmad
Keyword(s):  
Activated Carbon ◽  
Microwave Irradiation ◽  
Surface Area ◽  
Dye Removal ◽  
Pore Diameter ◽  
Focal Point ◽  
Radiation Power ◽  
Single Step ◽  
Bet Surface Area ◽  
Cationic Dye

The focal point of this study is to synthesis Alpinia galanga Stem-based activated carbon (AGSAC) by using single-step microwave irradiation and testing it for the removal of cationic dye, methylene blue (MB) from aqueous solution. AGSAC was prepared under the flow of carbon dioxide (CO2) for the gasification effect. The factors of contact time (from 0 to 24 h) and initial concentration (25-300 mg/L) on the adsorption performance of AGSAC were studied. With the aid of response surface methodology (RSM) via face-centered composite design (FCD), optimum preparation conditions for AGSAC were found to be 400 W for radiation power and 4 min for activation time, respectively, which resulted in 95.67% of MB dye removal. The optimized AGSAC has a Bruneaur-Emmet-Teller (BET) surface area of 172.19 m2/g, mesopore surface area of 103.32 m2/g, a total pore volume of 0.1077 cm3/g, and fixed carbon content of 47.63%. The pore diameter of AGSAC was found to be a mesoporous type with a pore diameter of 2.50 nm. Freundlich isotherm and pseudo-second-order were found as the best-fitted model for MB adsorption equilibrium and kinetic respectively onto prepared AGSAC. Intraparticle diffusion was found to be the rate-limiting step.

scholarly journals Cellulose Hydrogels for Rapid Dye Removal from Water

2020 ◽  
Author(s):  
Justin Harris ◽  
Anne McNeil
Keyword(s):  
Methylene Blue ◽  
Dye Removal ◽  
Cellulose Nanofibers ◽  
Water Sources ◽  
Water Remediation ◽  
Clean Water ◽  
Cationic Dye ◽  
Gel Formation ◽  
Potential Solution ◽  
Wood Pulps

<div><p>Clean water has become increasingly difficult to access due to the environmental discharge of pollutants. One potential solution is to develop materials that can efficiently remove pollutants from water sources through adsorption. Hydrogels have been explored for water remediation, but they often require long times to reach high levels of adsorption. To overcome this limitation, we developed a quick and locally formed hydrogel that adsorbs a common cationic dye during gel formation. Specifically, we demonstrate that hydrogels derived from cellulose – a renewable, non-toxic, and biodegradable resource – can efficiently remove methylene blue from water within seconds. We found that both sulfated cellulose nanofibers and sulfated wood pulps form localized gels when mixed with solutions containing a soluble, cationic cellulose derivative and the cationic dye. Overall, these localized hydrogels may be promising materials for remediating other water pollutants with further functionalization.</p></div>

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