Two-stage batch sorber design and optimization of biosorption conditions by Taguchi methodology for the removal of acid red 25 onto magnetic biomass

Oladipo, Akeem Adeyemi; Gazi, Mustafa

doi:10.1007/s11814-015-0001-6

Cited by 31 publications

(10 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, at Ph < pKa values of alginate, other interactions such as hydrogen bonding between sulfur and/or nitrogen atoms in MB and protonated carboxylate groups might be dominant in the adsorption process [34]. Same results were found in the literature for MB adsorption onto other composite beads [5][6][7][8][9][10][11][12][13][14][15][16]49]. Figure 7 shows the kinetic adsorption curve of MB adsorption onto A/γ-Fe 2 O 3 /f-CNT composite beads.…”

Section: Effect Of Initial Ph In Adsorption Testssupporting

confidence: 58%

Effective Adsorption of Methylene Blue dye onto Magnetic Nanocomposites. Modeling and Reuse Studies

et al. 2019

View full text Add to dashboard Cite

In the present study, new adsorbent beads of alginate (A)/maghemite nanoparticles (γ-Fe2O3)/functionalized multiwalled carbon nanotubes (f-CNT) were prepared and characterized by several techniques, e.g., N2 adsorption-desorption isotherms, Fourier transformed infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA/DTG), scanning electron microscopy (SEM), and vibrating sample magnetometry (VSM) and further tested for the adsorption of the dye methylene blue (MB) from water. The beads (A/γ-Fe2O3/f-CNT) presented a relatively low BET specific surface area value of 59 m2g−1. The magnetization saturation values of A/γ-Fe2O3/f-CNT beads determined at 295 K was equal to 27.16 emu g−1, indicating a magnetic character. The time needed to attain the equilibrium of MB adsorption onto the beads was estimated within 48 h. Thus, several kinetic and isotherm equation models were used to fit the kinetic and equilibrium experimental results. The number of adsorbed MB molecules per active site, the anchorage number, the receptor sites density, the adsorbed quantity at saturation, the concentration at half saturation and the molar adsorption energy were quantified using the monolayer model. The calculated negative ΔG0 and positive ΔH0 values suggested the spontaneous and endothermic nature of the adsorption process. In addition, A/γ-Fe2O3/f-CNT composites can be used at least for six times maintaining their significant adsorptive performance and could be easily separated by using a magnet from water after treatment.

show abstract

Section: Effect Of Initial Ph In Adsorption Testssupporting

confidence: 58%

Effective Adsorption of Methylene Blue dye onto Magnetic Nanocomposites. Modeling and Reuse Studies

et al. 2019

View full text Add to dashboard Cite

show abstract

“…From Table 3, it is clear that the values of q e, exp were more closer to the values of q e, cal . Figure 13 and Table 3 reveal that pseudosecond-order equation fits better for the adsorption of MB dye onto sawdust which is also confirmed by higher R 2 values in plots between t/q t and t. Observations of the present study are similar to the findings of Oladipo and Gazi (2015), in which the adsorption of acid red 25 dye from aqueous solution onto magnetic biomass fitted better in pseudo-second-order equation. …”

Section: Kinetic Modelssupporting

confidence: 86%

Adsorptive capacity of sawdust for the adsorption of MB dye and designing of two-stage batch adsorber

Markandeya

Singh

Shukla

et al. 2015

Cogent Environmental Science

View full text Add to dashboard Cite

The use of low-cost locally available adsorbent, sawdust for the removal of methylene blue (MB) dye in a batch adsorber system has been investigated. The experimental data fitted best in Langmuir isotherm as compared to Freundlich and Temkin isotherms, showing maximum adsorption capacity of 76.92 mg/g. The study revealed that the adsorption of MB dye onto sawdust follows pseudo-second-order kinetic model and the same has been used in design of a two-stage batch adsorber by minimizing total contact time to attain a fixed percentage of MB dye removal. The minimum contact time required for the removal of MB dye with 99% efficiency has been found as 37.54 min. , professor, Civil Engineering department, Institute of Engineering and Technology Lucknow has been known as an academician with good academic record. He has completed his PhD from Indian Institute of Technology Kanpur in 2007 and M.E. from IIT Roorkee in 1989. He has guided 21 M.Tech. theses in the field of Environmental Engineering and is guiding 7 PhD scholars on state-of-art topics. He has published 71 research papers including 23 in peer-reviewed International journals and National journals of repute having total Thomson Reuters ISI Impact factor based on JCR more than 14 (Citations: 74; h-index: 4; i10-index: 4 as per Google Scholar). He has also presented 44 research papers in National and International seminar/ workshop/ conferences. He has also coauthored 2 edited book chapters and 1 book titled "Foundation of Environmental Studies" which is a publication of the Uttar Pradesh Technical University, Lucknow. PUBLIC INTEREST STATEMENTAbout 10-20% of dyes in the textile sector are lost in residual liquors through incomplete exhaustion and washing operations, which inhibit sunlight penetration into the stream. Discharge of dyebearing effluents into natural streams and rivers not only imparts toxicity to aquatic life, but also adversely affects the self-purification system and esthetics of the surroundings. Basic dyes can also cause allergic dermatitis, mutations, and skin diseases like cancer and psoriasis. This study focuses on searching low-cost adsorbent (sawdust) for dye removal from effluent and designing a two-stage batch adsorber model for the adsorption of methylene blue (MB) dye.

show abstract

“…Adsorption technology is considered the most economically favorable technique to remove dyes among those available (i.e., membrane separation, oxidation, and irradiation) because of its high removal efficiency, low operation cost, and ability to separate a wide range of contaminants from industrial effluents. Various biosorbents derived from agricultural and industrial wastes have been efficiently applied to remove different types of dyes in the literature, such as acid, cationic, dispersive, direct, reactive, solvent, sulfur, and vat dyes (Annadurai et al, 2002;Gupta and Suhas, 2009;Contreras et al, 2012;Witek-Krowiak, 2013;Wang et al, 2014;Oladipo and Gazi, 2015;Roosta et al, 2015;Sadaf et al, 2015;Jeyagowri and Yamuna, 2016;Tahir et al, 2017). Although the removal efficiencies of biosorbents are lower than that of activated carbon, the industrial-scale utilization of these materials is economically attractive (Contreras et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Insight into the adsorption mechanism of cationic dye onto biosorbents derived from agricultural wastes

Tran

You

Nguyễn

et al. 2017

Chemical Engineering Communications

137

View full text Add to dashboard Cite

This study investigated the phenomenon and mechanism of adsorption of methylene green 5 (MG5) on three pristine biosorbents: golden shower pod (GS), coconut shell (CC), and orange peel (OP). The results showed that the biosorbents possessed low specific surface areas, but abundant functional groups. Adsorption was strongly affected by the solution's pH and ionic strength. As revealed in the kinetic study, equilibrium was rapidly established, requiring low activation energies; a removal rate of 30%-87% was achieved within 1 min. The maximum Langmuir adsorption capacities at 30 °C exhibited the following order: GS (106 mg/g) > OP (92 mg/g) > CC (59 mg/g). Thermodynamic experiments suggested that the adsorption occurred spontaneously (-ΔG°) and exothermically (-ΔH°). The primary adsorption mechanisms involved electrostatic attraction, hydrogen bonding formations, and n-π interaction. Thermogravimetric analysis revealed that three biopolymer components (i.e., hemicellulose, cellulose, and lignin) played controlling roles in the adsorption process. Thus, these three agricultural residues can be considered potential low-cost adsorbents for efficient dye adsorption applications.

show abstract

Two-stage batch sorber design and optimization of biosorption conditions by Taguchi methodology for the removal of acid red 25 onto magnetic biomass

Cited by 31 publications

References 62 publications

Effective Adsorption of Methylene Blue dye onto Magnetic Nanocomposites. Modeling and Reuse Studies

Effective Adsorption of Methylene Blue dye onto Magnetic Nanocomposites. Modeling and Reuse Studies

Adsorptive capacity of sawdust for the adsorption of MB dye and designing of two-stage batch adsorber

Insight into the adsorption mechanism of cationic dye onto biosorbents derived from agricultural wastes

Contact Info

Product

Resources

About