scholarly journals Application of immobilized banana peels Musa paradisiaca L. into calcium alginate beads for removal of chromium VI from aqueous solution

2018 ◽  
Vol Volume-2 (Issue-2) ◽  
pp. 1310-1325
Author(s):  
Amit S. Sharma ◽  
Prof. Dr. Satish A. Bhalerao ◽  
Keyword(s):  
Aqueous Solution ◽  
Calcium Alginate ◽  
Alginate Beads ◽  
Calcium Alginate Beads ◽  
Musa Paradisiaca ◽  
Chromium Vi

Efficient removal of methylene blue in aqueous solution by freeze-dried calcium alginate beads

2016 ◽  
Vol 33 (11) ◽  
pp. 3141-3148 ◽  
Author(s):  
Guangxue Liu ◽  
Zonggao Hu ◽  
Rouwen Guan ◽  
Yafei Zhao ◽  
Hongsong Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Calcium Alginate ◽  
Alginate Beads ◽  
Efficient Removal ◽  
Calcium Alginate Beads ◽  
Freeze Dried

scholarly journals Analysis of removal of cadmium by action of immobilized Chlorella sp. micro-algae in alginate beads

F1000Research ◽  
2018 ◽  
Vol 7 ◽  
pp. 54 ◽  
Author(s):  
Christian Valdez ◽  
Yomaira Perengüez ◽  
Bence Mátyás ◽  
María Fernanda Guevara
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Atomic Absorption ◽  
Calcium Alginate ◽  
Alginate Beads ◽  
Cadmium Removal ◽  
Initial Concentration ◽  
Calcium Alginate Beads ◽  
Chlorella Sp ◽  
Metabolic Systems

Cadmium (Cd) is a metal that can negatively interfere with the metabolic systems of living beings. The objective of this work was to evaluate the capacity for cadmium removal in aqueous solutions by immobilized Chlorella sp. in calcium alginate beads. Beads without Chlorella sp. were used as a control. All the treatments were established in triplicate for 80 min, at four concentrations of cadmium (0, 20, 100 and 200 ppm), taking samples of aqueous solution every 10 min, to be read using atomic absorption equipment. The study determined that the treatment of alginate beads with immobilized Chlorella sp. removed 59.67% of cadmium at an initial concentration of 20 ppm, this being the best removal result.

scholarly journals Calcium Alginate Beads Doped with Nano-ZrO2 and Activated Carbon of Annona reticulate Plant as an Effective Adsorbent for Water Remediation of Chromium(VI)

2021 ◽  
Vol 33 (2) ◽  
pp. 281-290
Author(s):  
WONDWOSEN KEBEDE BIFTU ◽  
KUNTA RAVINDHRANATH
Keyword(s):  
Activated Carbon ◽  
Calcium Alginate ◽  
Alginate Beads ◽  
Water Remediation ◽  
Polluted Water ◽  
Isotherm Models ◽  
Kinetics Of Adsorption ◽  
Calcium Alginate Beads ◽  
Chromium Vi ◽  
Pseudo Second Order

An activated carbon produced from stems of Annona reticulate plant (SACAR) by conc. H2SO4 digestion, is observed to have strong affinity for toxic Cr(VI) ions. Its adsorptivity for Cr(VI) ions was enhanced by admixing it with ‘nano-ZrO2’ (Zr-SACAR)-synthesized adopting green methods. For ensuring easy filtration, the ‘active carbon + nanoparticle composite’ was immobilized in calcium alginate beads (Zr-SACAR-Ca). Optimum extraction conditions for these three adsorbents for the removal of Cr(VI) ions from water were investigated. The adsorption capacities were found to be 92.2 mg/g for SACAR; 109.83 mg/g for Zr-SACAR and 119.34 mg/g for Zr-SACAR-Ca. The sorption nature was characterized by XRD, FTIR, FESEM and EDX studies. The sorption mechanism was investigated using various isotherm models. Thermodynamic studies revealed the endothermic and spontaneous nature of sorption. The kinetics of adsorption was well defined by the pseudo-second-order model. The spent adsorbent are regenerated and reused until six cycles with marginal decrease in Cr-adsorptivity. The adsorbents developed are effectively applied in the treatment of polluted water samples collected from Ethiopia

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