Kinetic and thermodynamic studies on the adsorptionof Cu+2 ions from aqueous solution by using agricultural waste-derived biochars
Yazarlar (4)
Prof. Dr. Nihan Kaya Hitit Üniversitesi, Türkiye
Doç. Dr. Ferhat Arslan Hitit University, Türkiye
Doç. Dr. Zeynep YILDIZ UZUN Sinop Üniversitesi, Türkiye
Prof. Dr. Selim Ceylan Ondokuz Mayıs Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | Water Science and Technology Water Supply (Q4) | ||
| Dergi ISSN | 1606-9749 Dergi Bilgileri (2020) | ||
| Dergi Tarandığı Indeksler | SCI-Expanded | ||
| Makale Dili | İngilizce | Basım Tarihi | 12-2020 |
| Kabul Tarihi | – | Yayınlanma Tarihi | 18-08-2020 |
| Cilt / Sayı / Sayfa | 20 / 8 / 3120–3140 | DOI | 10.2166/ws.2020.193 |
| Makale Linki | https://www.webofscience.com/wos/woscc/full-record/WOS:000617140800015 | ||
| UAK Araştırma Alanları |
Adsorpsiyonlu Süreçler
Yakıtlar ve Yanma
Modelleme ve Optimizasyon
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| Özet |
| In this study, it was aimed to investigate the adsorption properties of the biochars obtained by pyrolysis of hazelnut and walnut shells for removal of copper ions from aqueous solutions. The characterization of raw biomasses and also biochars were performed using TGA-DTG, FT-IR, BET, SEM, partial and elemental analysis techniques. The optimum conditions were determined by investigating the effect of adsorption parameters (initial concentration, temperature, adsorbent amount, pH, contact time and mixing speed) for efficient removal of copper ions from aqueous solution by batch adsorption experiments carried out under different conditions. The highest adsorption efficiencies were recorded as 82 and 86% respectively for hazelnut and walnut shell biochars at pH 4, Co  15 ppm, adsorbent dosagea 3 g/L and mixing speed 600 rpm. Experimental results showed that the adsorption efficiency for copper ions increased with the increase of temperature (T 45-C) in studies only using biochar obtained from hazelnut shell. While the time of equilibrium in the aqueous solution containing copper ions was determined to be 75 min for walnut shell char, this duration was 30 min for hazelnut shell char. The experimental results were investigated in terms of Langmuir, Freundlich and Temkin isotherm models. Together with the calculated thermodynamic parameters, the adsorption mechanism was explained. In order to determine the kinetic model of the adsorption process, the experimental data were applied to pseudo first-order, pseudo second-order and intra-particle diffusion models, and the model constants were investigated. |
| Anahtar Kelimeler |
| Adsorption | Biochar | Copper ions | Hazelnut shell | Pyrolysis | Walnut shell |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 7 |
| Scopus | 8 |