Potential efficiency of macroalgae Cladophora sp. to remove toxic industrial dye (safranin O) from aqueous solution

2022 ◽  
Author(s):  
Jasim M. Salman ◽  
Ruqayah Ali Grmasha ◽  
Osamah J. Al-sareji
Keyword(s):  
Aqueous Solution ◽  
Safranin O ◽  
Potential Efficiency

scholarly journals Rice Straw Biochar and Magnetic Rice Straw Biochar for Safranin O Adsorption from Aqueous Solution

Water ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 186
Author(s):  
Do Thi My Phuong ◽  
Nguyen Xuan Loc
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Rice Straw ◽  
Batch Adsorption ◽  
Particle Diffusion ◽  
Order Kinetic ◽  
Magnetic Biochar ◽  
Intra Particle Diffusion ◽  
Rice Straw Biochar ◽  
Safranin O

This study investigates the adsorption of Safranin O (SO) from aqueous solution by both biochar and magnetic biochar derived from rice straw. Rice straw biochar (RSB) was made by pyrolysis in a furnace at 500 °C, using a heating rate of 10 °C·min−1 for 2 h in an oxygen-limited environment, whilst the magnetic rice straw biochar (MRSB) was produced via the chemical precipitation of Fe2+ and Fe3+. The physicochemical properties of the synthesized biochars were characterized using SEM, SEM- EDX, XRD, FTIR techniques, and N2 adsorption (77 K) and pHpzc measurements. Batch adsorption experiments were used to explore the effect of pH, biochar dosage, kinetics, and isotherms on the adsorption of SO. Experimental data of RSB and MRSB fit well into both Langmuir and Freundlich isotherm models, and were also well-explained by the Lagergren pseudo-second-order kinetic model. The maximum SO adsorption capacity of MRSB was found to be 41.59 mg/g, while for RSB the figure was 31.06 mg/g. The intra-particle diffusion model indicated that the intra-particle diffusion may not be the only rate-limiting step. The collective physical and chemical forces account for the adsorption mechanism of SO molecules by both RSB and MRSB adsorbents. The obtained results demonstrated that the magnetic biochar can partially enhance the SO adsorption capacity of its precursor biochar and also be easily separated from the solution by using an external magnet.

scholarly journals Removal of Safranin-O from Aqueous Solution by Adsorption onto Kaolinite Clay

2014 ◽  
Vol 04 (03) ◽  
pp. 89-104 ◽  
Author(s):  
Kayode O. Adebowale ◽  
Bamidele I. Olu-Owolabi ◽  
Emmanuel C. Chigbundu
Keyword(s):  
Aqueous Solution ◽  
Kaolinite Clay ◽  
Safranin O

scholarly journals Correction: Removal of safranin-O dye from aqueous solution using modified red mud: kinetics and equilibrium studies

RSC Advances ◽  
2016 ◽  
Vol 6 (30) ◽  
pp. 25472-25472 ◽  
Author(s):  
Manoj Kumar Sahu ◽  
Raj Kishore Patel
Keyword(s):  
Aqueous Solution ◽  
Red Mud ◽  
Equilibrium Studies ◽  
Safranin O

Correction for ‘Removal of safranin-O dye from aqueous solution using modified red mud: kinetics and equilibrium studies’ by Manoj Kumar Sahu et al., RSC Adv., 2015, 5, 78491–78501.

scholarly journals Biosorption of Safranin-O from Aqueous Solution by Nile Rose Plant (Eichhornia crassipes)

2018 ◽  
Vol 15 (1) ◽  
pp. 26-30 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Aqueous Solution ◽  
Eichhornia Crassipes ◽  
Aquatic Plant ◽  
Dye Removal ◽  
Hydroxyl Group ◽  
Operation Conditions ◽  
Ftir Spectrometry ◽  
Before And After ◽  
Scan Data ◽  
Safranin O

In this work Aquatic plant (Nile rose) was used to study adsorption of industrial dye (safranin-O from aqueous solution within several operation conditions. The dried leaves of Nile rose plant were used as adsorbents safranin-O from aqueous solution after different activations such as wet and dry enhancements. The data show increasing in dye solution removal percentage for both activation methods of the adsorbent and also dye removal percentage that was obtained by using adsorbent without any treatment with the progress contact time. The dye removal percentages at equilibrium time 40 minutes were 88.7% at non-activation, 92.3% at thermal activation, and 98.3% at acidic activation. The samples adsorbents before and after adsorption which were scanned by using Fourier Transform Infrared (FTIR) Spectrometry. The scan data showed that the adsorbents contained hydroxyl group in there structure of adsorbents.

Removal of safranin-O dye from aqueous solution using modified red mud: kinetics and equilibrium studies

RSC Advances ◽  
2015 ◽  
Vol 5 (96) ◽  
pp. 78491-78501 ◽  
Author(s):  
Manoj Kumar Sahu ◽  
Raj Kishore Patel
Keyword(s):  
Aqueous Solution ◽  
Red Mud ◽  
Equilibrium Studies ◽  
P Adsorption ◽  
Safranin O

Adsorption of safranin-O dye on SDS modified red mud at different pH.

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