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Journals / Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi / 2026 / Cilt: 26 Sayı: 2

Removal of Copper (II) Ions Using a Bacterial Biosorbent: Explanation of Biosorption Through Isotherm and Kinetic Models

Bakır (II) İyonlarının Bakteriyel Biyosorbent ile Giderimi: Biyosorpsiyonun İzoterm ve Kinetik Modellerle Açıklanması

Seda Şen(ANKARA ÜNİVERSİTESİ)0000-0002-1187-2811
Nur Koçberber Kılıç(ANKARA ÜNİVERSİTESİ, FEN FAKÜLTESİ, BİYOLOJİ BÖLÜMÜ)0000-0003-2668-3789
Pages
249–260
Publication Date
2026-03-27
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Experimental data demonstrated that the dried L. adecarboxylata biosorbent, with its specific surface morphology, exhibits high biosorption capacity and can be considered a sustainable, economical, and environmentally compatible agent for heavy metal biosorption processes.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The removal of Cu(II), a heavy metal, from industrial wastewater is of great importance for the protection of environmental and ecological balance.
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Key Findings & Data:Based on the obtained data, the optimal pH was found to be 5.
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Conclusion & Impact:Experimental data demonstrated that the dried L. adecarboxylata biosorbent, with its specific surface morphology, exhibits high biosorption capacity and can be considered a sustainable, economical, and environmentally compatible agent for heavy metal biosorption processes.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Ağır metal · L. adecarboxylata · Biyosorpsiyon

Abstract

The removal of Cu(II), a heavy metal, from industrial wastewater is of great importance for the protection of environmental and ecological balance. Among biological treatment methods, biosorption offers an eco-friendly, cost-effective, and sustainable approach for the purification of such wastewater. In this study, the toxic heavy metal Cu(II) was removed from an aqueous medium using the dead biomass of Leclercia adecarboxylata. Optimum biosorption conditions were determined through experimental trials. Based on the obtained data, the optimal pH was found to be 5. The highest Cu(II) biosorption efficiency (66.5%, contact time: 120 minutes) was achieved with an initial biosorbent dose of 2 g/L. When the effect of initial pollutant concentration (25–700 mg/L) on biosorption was examined, efficient biosorption was observed across all tested concentrations. The surface morphology of the biosorbent before and after metal removal was examined using SEM, and the attachment regions of the biosorbent were physically observed. The presence of metal on the biosorbent surface after the biosorption process was confirmed via EDX analysis. Kinetic and isotherm analyses indicated that the biosorption process followed the Freundlich isotherm and the pseudo-second-order kinetic model, suggesting a multilayer and chemically controlled mechanism. Experimental data demonstrated that the dried L. adecarboxylata biosorbent, with its specific surface morphology, exhibits high biosorption capacity and can be considered a sustainable, economical, and environmentally compatible agent for heavy metal biosorption processes.

Özet

Endüstriyel atıksulardan, Cu(II) ağır metalinin ortamdan uzaklaştırılması çevresel ve ekolojik dengeyi korumak açısından büyük önem taşımaktadır. Biyolojik arıtım yollarından biyosorpsiyon yoluyla bu tip suların arıtımı, çevre dostu, uygun maliyetli, sürdürülebilir bir yaklaşımdır. Tamamlanan çalışmada, toksik bir ağır metal olan Cu(II), Leclercia adecarboxylata bakterisinin ölü biyokütlesi kullanılarak sulu ortamdan uzaklaştırılmıştır. Denemelerde optimum biyosorpsiyon koşulları belirlenmiştir. Alınan verilere göre optimum pH değeri 5 olarak bulunmuştur. En yüksek Cu(II) biyosorpsiyonuna (%66.5, temas süresi: 120 dakika) başlangıç biyosorbent dozu 2 g/L olduğunda ulaşılmıştır. Başlangıç kirletici konsantrasyonunun (25-700 mg/L) biyosorpsiyona etkisi incelendiğinde, denenen tüm konsantrasyonlarda biyosorpsiyonun etkin yapıldığı görülmüştür. Biyosorbentin yüzey morfolojisi, giderim öncesi ve sonrası SEM ile incelenmiş ve biyosorbentin tutunma bölgeleri fiziksel olarak gözlemlenerek EDS analizi ile biyosorpsiyon süreci sonrası metal varlığı doğrulanmıştır. Kinetik ve izoterm analizleri, biyosorpsiyonun Freundlich izotermine ve yalancı ikinci derece kinetik modele iyi uyum sağladığını, bunun çok katmanlı ve kimyasal kontrollü bir süreç olduğunu göstermiştir. Deneysel veriler, kuru L. adecarboxylata biyosorbentinin özgül yüzey morfolojisiyle yüksek biyosorpsiyon kapasitesi sergileyerek ağır metal biyosorpsiyon süreçlerinde sürdürülebilir, ekonomik ve çevreyle uyumlu bir ajan olarak değerlendirilebileceğini ortaya koymuştur.

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Cite This Article

Şen, S., Kılıç, N. K. (2026). Removal of Copper (II) Ions Using a Bacterial Biosorbent: Explanation of Biosorption Through Isotherm and Kinetic Models. Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt: 26 Sayı: 2, 249–260. https://doi.org/10.35414/akufemubid.1719117

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