Kinetic and Thermodynamic Studies on the Use of Waste Orange Peel in the Removal of Pb2+ Ions from Aqueous Solutions

Altunkaynak, Yalçın; Canpolat, Mutlu; Yavuz, Ömer

doi:10.29130/dubited.1089013

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

2023

DOI: 10.29130/dubited.1089013

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Kinetic and Thermodynamic Studies on the Use of Waste Orange Peel in the Removal of Pb2+ Ions from Aqueous Solutions

Yalçın Altunkaynak

Mutlu Canpolat

Ömer Yavuz

Abstract: Bu çalışmada, Pb2+ iyonlarının sulu çözeltilerden uzaklaştırılmasında atık portakal kabuğunun (APK) etkin bir şekilde değerlendirilmesi ve geri dönüşüme kazandırılması anlatılmaktadır. Adsorpsiyon verimliliği için; metal iyonu başlangıç derişimi, temas süresi, pH etkisi gibi farklı parametrelerin sonuçları incelendi. Pb2+ iyonunun uzaklaştırılmasında en uygun çalışma koşulları; metal iyonu başlangıç derişimi 800 mg/L, temas süresi 90 dakika ve çözelti pH'ı 4,32 olarak belirlendi. APK’nın yüzey özellikleri, Fou… Show more

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Cited by 4 publications

References 45 publications

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Performance and Mechanism of Modified Orange Peel as a Highly Efficient Adsorbent for Lead(II) and Mercury(II) Removal from an Aqueous Solution

Altunkaynak,

Canpolat

2023

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This research involves evaluating the use of modified orange peel (MOP) in the removal of Pb2+ and Hg2+ from wastewater. For the modification process, certain concentrations of ethanol, NaOH, and CaCl2 solution were added to the washed and dried orange peel and kept at room temperature for 24 hours. The mixture was then subjected to filtration and rinsed with distilled water until the pH level reached 7. For this reason, the effects of Pb2+ and Hg2+ on the adsorption efficiency were examined by performing batch experiments. The surface properties of MOP were investigated using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and Fourier transform infrared spectroscopy (FT‐IR) techniques. The results revealed that, among the various models, the Langmuir isotherm model provided the best fit to the isotherm data for Hg2+ and Pb2+ ions. Based on the kinetic data of adsorption, the pseudo‐second‐order kinetic model provided a more accurate description of the adsorption process for Pb2+ and Hg2+ ions. According to thermodynamic analyses, both metal ions bind to MOP spontaneously and endothermally. MOP was determined to be a reliable and valid alternative material for the removal of Pb2+ and Hg2+ from aqueous environments based on its qualities such as high adsorption capacity, ease of availability, low cost, use of agricultural waste, recycling potential, and no environmental impact.

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Performance and Mechanism of Modified Orange Peel as a Highly Efficient Adsorbent for Lead(II) and Mercury(II) Removal from an Aqueous Solution

Altunkaynak,

Canpolat

2023

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Efficient Elimination of Co (II) Ions from Watery Solutions Utilizing Eco‐Friendly, Inexpensive, Natural, and Modified Potato Peels

Altunkaynak,

Canpolat

2024

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This study is concerned with the physicochemical investigation of cobalt (II) sorptions from aqueous solution by potato peel (PP) and NaOH/CaCl2/C2H5OH‐modified potato peel (MPP). The sorption conditions of PP and MPP under optimized conditions were optimized according to the maximum effects of the main factors affecting the sorption processes (PP and MPP dosage, sorbate concentration, interaction time, and temperature) at pH 6.78. The kinetic and equilibrium experimental sorption data of the studied sorbates were simulated using commonly used models and were found to fit well with pseudo‐second‐order and Langmuir models. The Co(II) ion adsorption capacity of PP was determined as 12.25, 16.44, and 20.74 mg/g, respectively, at various temperatures (25, 35, and 45 °C), while the adsorption capacity of MPP under the same conditions was determined as 41.49, 52.35, and 62.50 mg/g. Thermodynamic parameters determined for each sorption system showed that the sorption processes were endothermic and spontaneous. The results of this study emphasize that both PP and MPP can be used as effective sorbents for removing pollutants from water.

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Adsorption of lead (II) ions on kaolinite from aqueous solutions: isothermal, kinetic, and thermodynamic studies

Altunkaynak,

Canpolat,

Aslan

2023

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Kinetic and Thermodynamic Studies on the Use of Waste Orange Peel in the Removal of Pb2+ Ions from Aqueous Solutions

Cited by 4 publications

References 45 publications

Performance and Mechanism of Modified Orange Peel as a Highly Efficient Adsorbent for Lead(II) and Mercury(II) Removal from an Aqueous Solution

Performance and Mechanism of Modified Orange Peel as a Highly Efficient Adsorbent for Lead(II) and Mercury(II) Removal from an Aqueous Solution

Efficient Elimination of Co (II) Ions from Watery Solutions Utilizing Eco‐Friendly, Inexpensive, Natural, and Modified Potato Peels

Adsorption of lead (II) ions on kaolinite from aqueous solutions: isothermal, kinetic, and thermodynamic studies

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