Adsorptive Mechanism of Chromium Adsorption on Siltstone–Nanomagnetite–Biochar Composite

Din, Salah Ud; Khan, Muhammad Sarfraz; Hussain, Sajjad; Imran, Muhammad; Haq, Sirajul; Hafeez, Muhammad; Zain‐ul‐Abdin,; Rehman, Fazal Ur; Chen, Xuenian

doi:10.1007/s10904-020-01829-7

Cited by 20 publications

(8 citation statements)

References 66 publications

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“…The pH point of zero charges of the magnetite-biochar composite derived from parthenium hysterophorus was found to be 6.8. A nearly similar result was reported by Ud et al 2021. The pHpzc of this biochar-magnetite composite was reduced as a result of the magnetizing process.…”

Section: Ph Point Of Zero Chargesupporting

confidence: 90%

“…The peak at 1010 cm −1 denotes the solitary C-O bond as well as the CH bending vibration of C-H 2 and C-H 3 . Finally, 524 cm −1 reveals the stretch of Fe 3 O 4 (Liang et al 2020;Ud et al 2021), confirming magnetite impregnation on the surface of biochar. The adsorbent peaks revealed the presence of functional groups on the surface of the adsorbent that can react with the various adsorbates in the solution (Bedada et al 2020;Fito and Van Hulle 2021).…”

Section: Ftir Analysismentioning

confidence: 68%

“…The pHpzc of this biochar-magnetite composite was reduced as a result of the magnetizing process. Moreover, the decrease in point of zero charge could also be due to the oxidation of carbon surfaces at the initial stage of the magnetizing process (Navarathna et al, 2019a(Navarathna et al, , 2019bImran et al 2020a;Ud et al 2021).…”

Section: Ph Point Of Zero Chargementioning

confidence: 99%

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Magnetite-impregnated biochar of parthenium hysterophorus for adsorption of Cr(VI) from tannery industrial wastewater

2023

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The tannery industry inevitably generates toxic and catastrophic wastewater, which results in a huge threat to public health and water resources. Therefore, this work aimed to synthesize parthenium hysterophorus-based biochar–Fe3O4 composite for removal of Cr(VI) from tannery wastewater under 34 full factorial experimental designs of the Box–Behnken, which was analyzed using response surface methodology under four independent factors of pH (3, 6, and 9), initial Cr(VI) concentrations (40, 70, and 100 mg/L), contact times (30, 60, and 90 min), and adsorbent doses (20, 60, and 100 mg/100 mL). This composite adsorbent was described by a high BET surface area of 237.4 m2/g, XRD prominent peaks, SEM morphology corroborate and FTIR multifunctionalities of O–H at 3296 cm−1, the vibration of ketone C–OH at 1240 cm−1, and the vibration of C–O–C at 1147 cm−1 and Fe–O stretching at 542 cm−1. The maximum Cr(IV) removal efficiency of 91.8% was recorded at an initial Cr(VI) concentration of 40 mg/L, pH of 3, adsorbent dose of 100 mg/100 mL, and a contact time of 90 min, whereas the minimum Cr(VI) removal of 17.3% was observed at an initial Cr(VI) concentration of 100 mg/L, 20 mg/100 mL of adsorbent dose, pH of 9, and contact time of 30 min. The concentration of Cr(VI) in real wastewater was determined to be 85.13 mg/L and its remediation was found to be 81.8%. Langmuir’s model was the best fit with experimental data at R2 0.99 and qmax 400 mg/g, showing that the adsorption process was homogenous and monolayer. In conclusion, the adsorption results were encouraging, and biochar–Fe3O4 appears to be a potential candidate for Cr removal from wastewater.

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Section: Ph Point Of Zero Chargesupporting

confidence: 90%

Section: Ftir Analysismentioning

confidence: 68%

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Magnetite-impregnated biochar of parthenium hysterophorus for adsorption of Cr(VI) from tannery industrial wastewater

2023

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“…The four peaks in Fig. 9a at 284.8 eV, 286.45 eV, 288.8 eV, and 289.83 eV respectively corresponded to carbon which existed in the forms of C–C/C C (284.8 eV), C–O (286.45 eV), O–C O (288.8 eV) 52 before reaction. After remediation, the peak at 289.83 eV disappeared and the content of the C O weakly increased from 7.14% to 8.61% (Cr( vi ) initial concentration: 20 mg L −1 ) and 9.47% ((Cr( vi ) initial concentration: 100 mg L −1 ).…”

Section: Resultsmentioning

confidence: 99%

Nano zero-valent iron loaded corn-straw biochar for efficient removal of hexavalent chromium: remediation performance and interfacial chemical behaviour

et al. 2022

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“…This adsorbent with abundant availability can cost 1/sixth of the cost of the popular activated carbon (Ahmad et al, 2014) which makes it an excellent choice for water treatment in developing countries (Song et al, 2014). The adsorptive capability of biochar are determined by its physiochemical characteristic which significantly varies with varying raw materials and pyrolysis settings (Din et al, 2021; Saif Ur Rehman et al, 2016; Yang et al, 2019). High porosity is generated due to pyrolysis of the source material at elevated temperatures, that is, 400–700°C (Din et al, 2020; Zhang et al, 2013; Zhou, Xie, Jiang, Ke‐Ao, & Tian, 2020).…”

Section: Introductionmentioning

confidence: 99%

Novel nanocomposite of biochar‐zerovalent copper for lead adsorption

Din

Awan

Imran

et al. 2021

Microscopy Res & Technique

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In this study, a composite of zerovalent copper‐biochar was investigated for its ability to remove lead from water. The prepared material was characterized by using scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR), X‐ray diffractomter (XRD), and X‐ray photoelectron spectroscopy (XPS). The pH effect on adsorption of lead was investigated within the range of 2–8 and the effect of temperature was studied at 303, 308, 313, and 318 K. The kinetics of lead adsorption on biochar composite was evaluated and the equilibrium time of 12 hr was established. To further evaluate the nature of adsorption, Langmuir model was tested and the adsorption capacities were evaluated for lead adsorption on the surface of copper biochar composite. The activation energy, entropy, and enthalpy values indicated the adsorption phenomenon to be chemisorptive and spontaneous in nature. Comparison of adsorption capacities with the reported adsorbents in the literature concluded zerovalent copper‐biochar composite to be an efficient adsorbent for the removal of lead in the experimental conditions under study. Research Highlights Highly efficient composite of zerovalent copper with biochar was synthesized for lead adsorption. XPS and XRD shows the presence of zerovalent copper in the biochar composite. pH and temperature were the main governing factors in the adsorption process. Adsorption capacity for lead is higher than many of the reported adsorbents.

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Adsorptive Mechanism of Chromium Adsorption on Siltstone–Nanomagnetite–Biochar Composite

Cited by 20 publications

References 66 publications

Magnetite-impregnated biochar of parthenium hysterophorus for adsorption of Cr(VI) from tannery industrial wastewater

Magnetite-impregnated biochar of parthenium hysterophorus for adsorption of Cr(VI) from tannery industrial wastewater

Nano zero-valent iron loaded corn-straw biochar for efficient removal of hexavalent chromium: remediation performance and interfacial chemical behaviour

Novel nanocomposite of biochar‐zerovalent copper for lead adsorption

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