Novel magnetic gel beads based on ionically crosslinked sodium alginate and polyanetholesulfonic acid: Synthesis and application for adsorption of cationic dyes

2020 ◽  
Vol 256 ◽  
pp. 123659 ◽  
Author(s):  
Ayşegül Ülkü Metin ◽  
Deniz Doğan ◽  
Muzaffer Can
Keyword(s):  
Sodium Alginate ◽  
Acid Synthesis ◽  
Cationic Dyes ◽  
Gel Beads

Removal of methylene blue and Lead (II) via PVA/SA double cross-linked network gel beads loaded Fe3O4@KHA nanoparticles

2021 ◽  
Author(s):  
Niu Yuhua ◽  
Han Xingxing ◽  
Song Jie ◽  
Huang Liangxian
Keyword(s):  
Methylene Blue ◽  
Polyvinyl Alcohol ◽  
Sodium Alginate ◽  
Potassium Humate ◽  
Gel Beads ◽  
Ferroferric Oxide ◽  
Double Cross

Novel magnetic gel beads were successfully fabricated via polyvinyl alcohol (PVA) and sodium alginate (SA) double cross-linked network loaded ferroferric oxide@potassium humate (Fe3O4@KHA) nanoparticles. PVA/SA/Fe3O4@KHA gel beads were found to...

Adsorption of Dyes onto Sodium Alginate Graft Poly(Acrylic Acid-co-2-Acrylamide-2-Methyl Propane Sulfonic Acid)/ Kaolin Hydrogel Composite

2017 ◽  
Vol 25 (8) ◽  
pp. 627-634 ◽  
Author(s):  
Linhui Zhu ◽  
Chengdong Guan ◽  
Bin Zhou ◽  
Zhentao Zhang ◽  
Rui Yang ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Sodium Alginate ◽  
Xylenol Orange ◽  
Methyl Violet ◽  
Cationic Dyes ◽  
Anionic Dyes ◽  
Hydrogel Composite ◽  
Adsorption Capacities ◽  
Initial Ph ◽  
Poly Acrylic Acid

Adsorption of four dyes, namely methyl violet (MV), rhodamine 6G (R6G), acid chrome blue K (AK) and xylenol orange (XO) onto sodium alginate graft poly(acrylic acid-co-2-acrylamide-2-methyl-1-propanesulfonicacid)/kaolin (SA-g-P(AA-co-AMPS)/KL) hydrogel composite is studied. The factors influencing the adsorption capacities, including the initial concentrations of dye solutions, contact time, initial pH values and dosage of the adsorbent as well as ionic strength of the solution are discussed. It is more effective for the composite to adsorb cationic dyes such as MV and R6G rather than anionic dyes AK and XO. The maximum adsorption capacities of MV, R6G, AK and XO are 1361.1, 1627.8, 563.5 and 312.4 mg/g, respectively. The adsorption thermodynamics for the four dyes are in accordance with both the Freudlich and Redlich-Peterson equations. It is shown that adsorption of the cationic dyes R6G and MV is spontaneous, while that of anionic dyes AK and XO is not. The kinetics studies show that the adsorption of the four dyes fitted a pseudo-second-order equation.

Effective Adsorption of Pb(II) Ions by Gel Beads of Sodium Alginate and Polyethylene Glycol

2016 ◽  
Vol 13 (S1) ◽  
pp. S1-S7
Author(s):  
Daoji Wu ◽  
Zhimin Gao ◽  
Huixue Ren ◽  
Jiahui Jiang ◽  
Fengxun Tan ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Sodium Alginate ◽  
Gel Beads

Effective Adsorption of Pb(II) Ions by Gel Beads of Sodium Alginate and Polyethylene Glycol

2016 ◽  
Vol 13 (S1) ◽  
pp. S1-S7
Author(s):  
Daoji Wu ◽  
Zhimin Gao ◽  
Huixue Ren ◽  
Jiahui Jiang ◽  
Fengxun Tan ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Sodium Alginate ◽  
Gel Beads

Adsorption of Methylene Orange on Embedding Carbon Nanotubes Sodium Alginate /Chitosan Gel Beads

2014 ◽  
Vol 58 (47) ◽  
pp. 33-43
Author(s):  
F.-C. Tsai ◽  
T.-C. Chiang ◽  
N. Ma ◽  
J.-J. Shi ◽  
X. Yue ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Sodium Alginate ◽  
Methylene Orange ◽  
Gel Beads ◽  
Chitosan Gel

Anaerobic ammonium oxidation in polyvinyl alcohol and sodium alginate immobilized biomass system: a potential tool to maintain anammox biomass in application

2013 ◽  
Vol 69 (4) ◽  
pp. 718-726 ◽  
Author(s):  
Gang-Li Zhu ◽  
Jia Yan ◽  
Yong-You Hu
Keyword(s):  
Polyvinyl Alcohol ◽  
Sodium Alginate ◽  
Nitrogen Removal ◽  
Enrichment Culture ◽  
Batch Reactor ◽  
Anaerobic Ammonium Oxidation ◽  
Anammox Bacteria ◽  
Ammonium Oxidation ◽  
Gel Beads ◽  
Key Factor

Anaerobic ammonium oxidation (anammox) has been proved to be a promising nitrogen removal method for treating ammonium-rich wastewater. However, because of the low-growth rate of anammox bacteria, maintenance of a sufficient amount of anammox biomass in reactor became a key factor in application. Gel immobilization is an efficient method to prevent biomass from being washed out and to promote hyper-concentrated cultures. This study focused on a nitrogen removal process by anammox enrichment culture immobilized in polyvinyl alcohol and sodium alginate (PVA-SA) gel beads. The rapid startup of reactor demonstrated that gel entrapment was supposed to be a highly effective technique for immobilizing anammox bacteria. The anammox bacteria present in the enrichment were identified to be Jettenia-like species (>98%). Moreover, the effect of hydraulic retention time (HRT), pH, and temperature on immobilized anammox processes were investigated. The effect of pH and temperature on the anammox process was evidently weakened in PVA-SA immobilized gel beads, however, the effect of HRT on the anammox reaction was enhanced. Therefore, a stable operated reactor could be obtained in an anaerobic sequencing batch reactor, which proved gel immobilization was an excellent method to maintain the biomass in anammox reactor for application.

scholarly journals Eco-friendly decolorization of cationic dyes by coagulation using natural coagulant Bentonite and biodegradable flocculant Sodium Alginate

2020 ◽  
Vol 5 (2) ◽  
pp. 51-60
Author(s):  
Qunshan Wei ◽  
Felix O. Mcyotto ◽  
Christopher W.K. Chow ◽  
Zuhair Nadeem ◽  
Zheng Li ◽  
...  
Keyword(s):  
Sodium Alginate ◽  
Cationic Dyes ◽  
Natural Coagulant
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