Humic Acid/Quercetin Coated Magnetic Fe3O4 Nanoparticles For Adsorptive Removal of Cu2+ and Ni2+

Yıl 2019, Cilt: 40 Sayı: 2, 406 - 413, 30.06.2019

Fatoş Ayça Özdemir Olgun Birsen Demirata Öztürk

https://doi.org/10.17776/csj.374057

Öz

Removal
of metals and heavy metals from industrial wastewaters is a serious concern for
water systems. In this study, environmentally friendly natural polymer coated,
cost-effective, easy to operate HA/QR magnetic nanoparticles were suggested to
overcome this problem, for the first time in literature. Fe₃O₄
magnetic nanoparticles were synthesized with co-precipitation technique and a
core-shell structure was obtained with humic acid sodium salt (HA) solution. At
the second step of the procedure, synthesized magnetic nanoparticles were
coated with quercetin solution. Scanning electron microscopy (SEM), X-Ray diffraction
(XRD) and particle size analyses were performed to enlighten and characterize
the structure. The newly synthesized nanoparticles were used for the batch-wise
adsorption of copper and nickel metals, successfully. Maximum adsorption
capacities were calculated as 14.61 mg/g for copper and 28.30 mg/g using 0.03 g
adsorbents, at pH=7. Adsorption isotherms were evaluated and it was concluded
that adsorption equilibrium fitted to both Langmuir and Freundlich isotherm
models, better correlated with Langmuir isotherm model.

Anahtar Kelimeler

Fe3O4 magnetic nanoparticles, metal removal, adsorption isotherm, Humic acid

Hümik Asit/Kuversetin Kaplı Fe3O4 Manyetik Nanoparçacıklar ile Cu2+ ve Ni2+ Metallerinin Adsorpsiyon Yöntemiyle Giderimi

Öz

Endüstriyel
atıksulardan metal ya da ağır metal giderilmesi su sistemleri için ciddi
sorunlar oluşturabilmektedir. Bu çalışmada, bu sorunları tamamen gidermek ya da
en aza indirmek için bir çözüm yolu önerildi. Çalışma kapsamında, literatürde
ilk kez, doğal polimer olan hümik asit sodyum tuzu ile kaplı olduğu için çevre
dostu olan, ekonomik ve manyetik özelliğinden dolayı kullanım kolaylığı
sağlayan HA/QR manyetik nanoparçacıklar sentezlendi. Sentez prosedürünün
birinci adımında birlikte çöktürme tekniğiyle Fe₃O₄ manyetik
nanoparçacıklar sentezlendi ve çekirdek-kabuk (core-shell) modeline uygun
olarak hümik asit çözeltisi ile muamale edilerek kaplandı. İkinci adımda ise,
sentezlenen partiküller kuersetin çözeltisi ile kaplandı. Oluşan nano yapının
aydınlatılması için SEM (Taramalı Elektron Mikroskopisi), X ışını kırınımı
(XRD) ve parçacık boyut analizi teknikleri kullanıldı. Yeni sentezlenen
parçacıklar Cu²⁺ ve Ni²⁺ metallerinin giderimi için adsorban olarak
başarıyla kullanıldı. pH=7 değerinde 0.03 g adsorban kullanılarak hesaplanan
adsorpsiyon kapasiteleri Cu²⁺ için 14.61 mg/g; Ni²⁺ için 28.30 mg/g olarak hesaplandı. Adsorpsiyon
izotermleri değerlendirildiğinde, elde edilen adsorpsiyon izoterm eğrisinin hem
Langmuir hem Freundlich modeline uyum sağladığı gözlemlendi.

Anahtar Kelimeler

Fe3O4 manyetik nanoparçacıklar, metal giderimi, adsorpsiyon izotermi, Hümik asit

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