2017
DOI: 10.1039/c7ra10185f
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Removal of Cu(ii) from aqueous solution using Fe3O4–alginate modified biochar microspheres

Abstract: Magnetic microspheres (MM) were prepared using calcium alginate (CA) encapsulated biochar (BC) and with pseudo-second-order kinetics. The overall orders for fitting the isotherm models are Langmuir > Freundlich for Cu(II). Mechanism studies showed that coordination and ion exchange were the major mechanism for Cu(II) removal by the MM. Moreover, the presence of the magnetic particles in the microspheres allowed easy separation of the material from aqueous solutions. This study provides an effective method for … Show more

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Cited by 52 publications
(16 citation statements)
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“…C-N stretching vibration peak at 1550 cm −1 . The absorption peak at 1033 cm −1 is caused by Si-O stretching vibration (Yu et al 2017). The bending vibration peak of Si-O-Mg can be observed at 532 cm −1 (Zhang et al 2019a).…”
Section: Ft-ir Analysismentioning
confidence: 97%
“…C-N stretching vibration peak at 1550 cm −1 . The absorption peak at 1033 cm −1 is caused by Si-O stretching vibration (Yu et al 2017). The bending vibration peak of Si-O-Mg can be observed at 532 cm −1 (Zhang et al 2019a).…”
Section: Ft-ir Analysismentioning
confidence: 97%
“…pH değeri arttıkça, fonksiyonel grupların deprotonize olması (proton bırakma) ile sorbent yüzeyinin negatif yükü artar. Sorbent üzerindeki negatif yüklü aktif bölgelere, pozitif yüklü metal iyonlarının bağlanması ile biyosorpsiyon kapasitesinde artış görülmektedir [52,53].…”
Section: Ph Değişiminin Biyosorpsiyon üZerine Etkisiunclassified
“…İzotermler, sabit sıcaklıktaki bir adsorpsiyon prosesinin dengeye ulaştığı anda adsorbentin birim kütle başına adsorplayabileceği madde miktarı ve akışkan fazdaki madde konsantrasyonu arasındaki ilişkiyi verir. Biyosorpsiyon çalışmalarında elde edilen veriler, Langmuir, Freundlich ve Temkin izotermlerine göre değerlendirilmiş ve eşitliklerin düzenlenmiş halleri Tablo 3'de ifade edilmiştir [53].…”
Section: Biyosorpsiyon Izotermleriunclassified
“…1 mL of the Cu(II) solution was removed at different times (from 10 min to 32 h) and analyzed aer dilution. 13 All the results were obtained by taking an average of three specimens. The adsorption capacity of Cu(II) at time t (q t ) was then calculated using eqn (1):…”
Section: Adsorption Kinetic Studiesmentioning
confidence: 99%