Removal of heavy metal ion concentrations from the wastewater using tobacco leaves coated with iron oxide nanoparticles

Venkatraman, Yogeshwaran; Priya, A.K.

doi:10.1007/s13762-021-03202-8

Cited by 33 publications

(9 citation statements)

References 60 publications

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“…Further, the ammonia solution was mixed with the heated solution, and the mixing process was continued. 15 gm of ground rice hull powder was added to the solution for the capping process (Venkatraman et al, 2022). To maintain the equilibrium mixing, the continuous stirring was done for up to 30 minutes and kept the solution in a muffle furnace at the temperature of 100°C.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of the Performance of Packed Bed Column for Heavy Metal Ion Removal Using Rice Husk Powder Coated With Iron Oxide Nano-Particles

2022

Global NEST: The International Journal

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The packed bed column study investigated the removal of toxic metal ions (Cr, Pb & Zn) using rice husk coated with iron oxide nanoparticles as an adsorbent material. The chemical fusion process prepared the nanomaterial adsorbent, and iron oxide capping provides stability to the prepared nano adsorbent. The characteristics of prepared nano adsorbents and their stability were examined by SEM/EDX, VSM, XRD, Zeta Potential, TGA & DTA methods. Breakthrough curves confirm the ability to obtain the maximum adsorption under operating conditions of 5, 7.5 & 10 - cm bed heights, 100, 200 & 300 – mg/L of metal ion concentrations and 5, 7.5 & 10 – mL/min of inflow rate of the solutions into the column. The ANOVA & CCD analysis confirms the linearity of actual and predicted values of the amount of adsorption process. Thomas and BDST model studies show the best fit to the regression values for obtaining earlier breakthroughs in the fixed bed column. At the pH of 2.0, the maximum amount of heavy metals adsorption was observed. The maximum desorption rate of the column and adsorbent material was obtained by adding 0.3 N of H2SO4 at 40 minutes average time for all the three metal ions.

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Section: Methodsmentioning

confidence: 99%

Evaluation of the Performance of Packed Bed Column for Heavy Metal Ion Removal Using Rice Husk Powder Coated With Iron Oxide Nano-Particles

2022

Global NEST: The International Journal

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“…A second-order chemical adsorption process is used in this kinetic study, with the assumption that the adsorption rate is proportional to the square of the number of vacant sites (Venkatraman et al, 2021). Equation 11represents the expression for the pseudo-second-order kinetic equation.…”

Section: Pseudo -Second Order Kinetic Modelmentioning

confidence: 99%

Biosorption of crystal violet and methylene blue dyes using coconut shell powder

2023

Global NEST Journal

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In this study, coconut shell biosorbent was synthesized through chemical processes and activated using concentrated sulfuric acid to serve as an organic adsorbent for the effective removal of dye molecules, particularly Crystal Violet (CV) and Methylene Blue (MB), from wastewater. The biosorbent's surface characteristics, including morphology and functional groups, were comprehensively analyzed using techniques such as BET, FTIR, SEM, and EDX. The experimental investigations revealed that optimal conditions, including a pH of 10.0, biosorbent dosage of 3 g/L, initial dye concentration of 20 mg/L, and a contact time of 60 minutes, led to the efficient removal of 89.74% of CV and 82.32% of MB dye molecules from synthetic solutions. Several isothermal studies were conducted to assess whether the adsorption process exhibited homogeneity or heterogeneity, aiming to gain a deeper understanding of its characteristics. Alongside the aforementioned tests, kinetic investigations were performed to ascertain whether the dye adsorption on the adsorbent was of a physical or chemical nature. Thermodynamic analyses were also undertaken to determine the outward-releasing or inward-absorbing characteristic of the dye adsorption process and to assess its spontaneity. Based on the outcomes of the desorption studies, the addition of 0.3N hydrochloric acid (HCl) resulted in the highest desorption rate. This effectively enhanced the recovery of dye molecules from the exhausted adsorbent, underscoring the effectiveness of 0.3N HCl in facilitating the desorption of adsorbed dye molecules.

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“…Also, the process of adsorption reached the equilibrium level based on the regression indication (Venkatraman et al, 2022).…”

Section: R-p Isotherm Studymentioning

confidence: 99%

Ziziphus Jujube Seeds derived Biomass as Cost-Effective Biosorbent for the removal of Cr6+ from Aqueous solutions: Isotherm and Kinetic Studies

2022

Global NEST: The International Journal

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Biosorption of hexavalent chromium ions from the synthetic solution was performed using activated Ziziphus jujube seeds powder as an adsorbent material. A chemical synthesis process prepared the adsorbent, and various methods have evaluated its characteristics. FTIR, SEM and EDX analysis was conducted to check the ability of hexavalent chromium uptake from the synthetic solutions. Batch mode of adsorption process was performed and the adsorption parameters of pH, concentration, dose, contact time and temperature were found in various operating conditions. The entire adsorption process was evaluated by isotherm and kinetic models to check the nature of the adsorption process and its chemical reactions. Thermodynamic studies were conducted, desorption studies were used to recover the spent adsorbent using concentrated hydrochloric acid.

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Removal of heavy metal ion concentrations from the wastewater using tobacco leaves coated with iron oxide nanoparticles

Cited by 33 publications

References 60 publications

Evaluation of the Performance of Packed Bed Column for Heavy Metal Ion Removal Using Rice Husk Powder Coated With Iron Oxide Nano-Particles

Evaluation of the Performance of Packed Bed Column for Heavy Metal Ion Removal Using Rice Husk Powder Coated With Iron Oxide Nano-Particles

Biosorption of crystal violet and methylene blue dyes using coconut shell powder

Ziziphus Jujube Seeds derived Biomass as Cost-Effective Biosorbent for the removal of Cr6+ from Aqueous solutions: Isotherm and Kinetic Studies

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