Sequestered capture and desorption of hexavalent chromium from solution and textile wastewater onto low cost Heinsia crinita seed coat biomass

Dawodu, Folasegun A.; Akpan, Benjamin M.; Akpomie, Kovo G.

doi:10.1007/s13201-019-1114-6

Cited by 66 publications

(15 citation statements)

References 62 publications

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“…The slopes obtained are close to 1 which showed that the extract adsorption on the metal was monolayer adsorption and that no interaction existed between extract and mild steel (Ashassi-Sorkhabi et al 2004;Ebenso et al 2008;Dawodu et al 2020;Kamga 2019).…”

Section: Adsorption Considerationsmentioning

confidence: 68%

Inhibition and adsorption potentials of mild steel corrosion using methanol extract of Gongronema latifoliuim

2021

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Gongronema latifolium was used as a low-cost green inhibitor for mild steel by applying the weight loss method at 303–323 K. There was a decrease in percentage inhibition with temperature increase and a rise in inhibition efficiency with an increase in the concentration of inhibitor. The obtained results showed that Gongronema latifolium extract of methanol had percentage inhibition efficiencies in the range of 59.06–81.69%. Corrosion inhibition of mild steel showed a good fit to the Langmuir model compared to the Freundlich and El-Awardy adsorption models. Thermodynamics parameters, such as $$ E_{\text{a}} $$ E a , $$ Q_{\text{ads}} $$ Q ads and $$ \Delta G_{\text{ads}} $$ Δ G ads were evaluated and showed that the mechanism of corrosion inhibition of mild steel by methanol extract of Gongronema latifolium was physisorption. The results of this work indicated efficient potentials of the methanol extract of Gongronema latifolium as a low-cost corrosion inhibitor in acidic media for mild steel, which could be applied to reduce corrosion of metals in industries.

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Section: Adsorption Considerationsmentioning

confidence: 68%

Inhibition and adsorption potentials of mild steel corrosion using methanol extract of Gongronema latifoliuim

2021

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Section: Thermodynamic Analysismentioning

confidence: 99%

“…Adsorption thermodynamics analysis was performed to evaluate the enthalpy change (ΔH°), entropy change (ΔS°) and Gibbs free energy change (ΔG°) by the application of the given equations 62 : where symbols R (J/mol K), T (K) and K c correspond to the ideal gas constant, absolute temperature and distribution coefficient respectively.…”

Section: Thermodynamic Analysismentioning

confidence: 99%

Biogenic and chemically synthesized Solanum tuberosum peel–silver nanoparticle hybrid for the ultrasonic aided adsorption of bromophenol blue dye

Akpomie

Conradie

2020

Sci Rep

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This work was aimed at the synthesis of a hybrid (STpe-AgNP), obtained by impregnation of silver nanoparticles (AgNP) onto Solanum tuberosum peel (STpe), for the ultrasonic assisted adsorption of bromophenol blue (BB) dye. SEM, FTIR, XRD, EDX, TGA and BET techniques were used to characterize the adsorbents. The XRD, SEM and EDX confirmed successful impregnation of AgNPs onto STpe to form the hybrid. The AgNPs impregnated onto the hybrid were found to be water stable at various pH values of 2.0–9.0. Chi-square (χ2 < 0.024) and linear regression (R2 > 0.996) showed that the Freundlich model was best fitted among the isotherm models, corroborated by the oriented site model. Kinetic analysis conformed to the intraparticle diffusion and pseudo-first-order rate equations, while thermodynamics displayed a physical, spontaneous and endothermic adsorption process. The presence of competing Pb(II), Ni(II), Cd(II) and Zn(II) metal ions in solution interfered with the adsorption of BB onto the biosorbents. In terms of reusability, STpe and STpe-AgNP showed BB desorption of 91.3% and 88.5% respectively, using NaOH as eluent. Ultra-sonication significantly enhanced the adsorption of BB by both adsorbents, but the impregnation of AgNPs only slightly improved adsorption of the dye from the simulated wastewater. This study also illustrated that pristine STpe biomass waste is a cheap viable option for the decontamination of BB from water.

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“…During the first cycle, the desorption yields achieved were 7.10 and 83.13% for nickel and lead ions, respectively. As the number of cycles increased, the desorption yields reduced, which can be attributed to damage in biomass structure after using desorbing agents [ 34 ].…”

Section: Resultsmentioning

confidence: 99%

Cement-Based Solidification/Stabilization as a Pathway for Encapsulating Palm Oil Residual Biomass Post Heavy Metal Adsorption

2022

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Heavy metal pollution is a serious issue currently affecting the environment and public health, which has been faced by applying several alternatives such as adsorption. In this work, the adsorption technique was employed to remove nickel and lead ions from an aqueous solution using palm oil residual biomass as a biosorbent. Desorption experiments were also conducted to evaluate the desorption capacity of this biomass over sorption–desorption cycles. The polluted biomass was used to prepare bricks (5 and 10% biomass content) to encapsulate heavy metal ions into the cement matrix. Both mechanical resistance and leaching testing were performed to determine the suitability of these bricks for construction applications. The experimental results revealed a good biosorbent dosage of 0.1 g/L. The highest desorption yields were calculated in 11 and 83.13% for nickel and lead, respectively. The compression resistance when 10% biomass was incorporated into the bricks was reported to be below the acceptable limit. Leaching testing suggested a successful immobilization of heavy metal ions onto the cement matrix. These results indicate that the application of this immobilization technique allows solving disposal problems of biomass loaded with heavy metal ions.

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Sequestered capture and desorption of hexavalent chromium from solution and textile wastewater onto low cost Heinsia crinita seed coat biomass

Cited by 66 publications

References 62 publications

Inhibition and adsorption potentials of mild steel corrosion using methanol extract of Gongronema latifoliuim

Inhibition and adsorption potentials of mild steel corrosion using methanol extract of Gongronema latifoliuim

Biogenic and chemically synthesized Solanum tuberosum peel–silver nanoparticle hybrid for the ultrasonic aided adsorption of bromophenol blue dye

Cement-Based Solidification/Stabilization as a Pathway for Encapsulating Palm Oil Residual Biomass Post Heavy Metal Adsorption

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