Optimization Activated Carbon from Hazelnut Shell and Cu+2 Adsorption from Aqueous Solution

Abstract

In this study, fractional factorial design was used to prepare activated carbon from hazelnut shell.
Particle size, impegnation ratio, temperature and time as parameters were chosen. The flexible simpleks method
was used to determine optimum conditions. The optimum conditions were determined as impegnation ratio 0.792
mL acid gshell-1, temperature 413.3 K and time 7.45 h. Adsorption capacity of activated carbonprepared at optimum
conditions was found as 30 mg Cu+2 g activated carbon-1 at temperature 293 K, pH 5, concentration of Cu+2 250 mg
L-1 and amount of activated carbon 3 g L-1. The effects of concentration of copper, adsorbent content, temperature,
and solution pH on adsorption of Cu+2 have been investigated in the batch system. Langmuir and Freundlich
isotherms ft the experimental data and both of isotherms were observed to be best represents the equilibrium data  

Keywords

• Adsorption,copper,Freundlich isotherm,hazelnut shell,Langmuir isotherm

Fındık Kabuğundan Aktif Karbon Üretiminin Optimizasyonu ve Sulu Çözeltiden Cu+2 Adsorpsiyonu

Abstract

Bu çalışmada, fındıkkabuğundan aktif karbon üretmek için fraksiyon faktöriyel yöntemi kullanılmıştır.
Tane boyutu, emdirme oranı, fırın sıcaklığı ve fırında kalma süresi parametre olarak seçilmiştir. Optimum şartları
belirlemek için esnek simpleks yöntemi kullanılmış ve optimum koşullar: emdirme oranı 0.792 (mL asit gkabuk-1),
sıcaklık 431.3 K ve fırında kalma süresi 7.45 saat olarak bulunmuştur. Optimum şartlarda üretilen aktif karbonun
adsorpsiyon kapasitesi; çalışma sıcaklığı= 293 K, pH = 5, Cu+2konsantrasyonu= 250 mg L-1ve karbon miktarı= 3 g
L-1’de, 30 mg g-1 olarak bulunmuştur. Cu+2 adsorpsiyonu üzerine bakır konsantrasyonu, adsorbent miktarı, sıcaklık
ve çözelti pH’ sının etkileri kesikli bir sisteminde incelenmiştir. Adsorpsiyon verileri Langmuir ve Freundlich
izotermlerine uygulanmış ve her iki izotermin denge verilerini iyi temsil ettiği gözlenmiştir.  

Keywords

• Adsorpsiyon,bakır,fındıkkabuğu,Langmuir izotermi,Freundlich izotermi

References

1. Abbasa M, Kaddourb S, Traric M, 2014. Kinetic and equilibrium studies of cobalt adsorption on apricot stone activated carbon. Journal of Industrial and Engineering Chemistry , 20(3): 745– 751.
2. Başar CA, 2006. Applicability of the various adsorption models of three dyes adsorption onto activated carbon prepared waste apricot. Journal of Hazardous Materials B, 135: 232-241.
3. Bayramoğlu M, Akçay M, 1991. Değişik deneysel optimizasyon yöntemlerinin karşılaştırılması. I.T.Ü, 49(3): 8-16.
4. Bello G, Cid R, García R, Arriagada R, 1999. Retention of Cr(VI) and Hg(II) in Eucalyptus globulus- and peach stone-activated carbons. J.Chemical Technology and Biotechnology, 74(9): 904–910.
5. Blázquez G, Calero M, Ronda A, Tenorio G, Martín-Lara M. A, 2014. Study of kinetics in the biosorption of lead onto native and chemically treated olive stone. Journal of Industrial and Engineering Chemistry, 24(5): 2754-2760.
6. Demirbaş A, 1998. Kinetics for non –isothermal flash pyrolysis of hazelnut shell. Bioresour. Technol. 66:247-252.
7. Demirbaş E, Kobya M, Konukman AES, 2008. Error analysis of equilibrium studies for the almond shell activated carbon adsorption of Cr(VI) from aqueous solutions. J. Hazard. Mater, 154: 787-794.
8. Demirbaş E, Dizge N, Sulak MT, Kobya M, 2009.Adsorption kinetics and equilibrium of copper from aqueous solutions using hazelnut shell activated carbon. Chem. Eng J., 148: 480- 487.

9. Li K, Zhengb Z, Li Y, 2010. Characterization and lead adsorption properties of activated carbons prepared from cotton stalk by one-step H3PO4 activation. J. Hazard. Mater. 181: 440-447.
10. Martínez ML, Torres MM, Guzmán CA, Maestri DM, 2006 . Preparation and characteristics of activated carbon from olive stones and walnut shells. Ind. Crops and Products. 23: 23-28.
11. Milenkovic DD, Dasic PV, Veljkovic VB, 2009. Ultrasoundassisted adsorption of opper(II) ions Shell activated carbon. Ultrasonic Sonochemistry. 16: 557-563.
12. Rambabu N, Rao BVSK, Surisetty VR, Das U, Dalai AK, 2015. Production, characterization, and evaluation of activated carbons from de-oiled canola meal for environtmental applications. Ind. Crops and Products. 65: 572-581.
13. Spahis N, Mahmoudi AH, Ghaffour N, 2008. Purifcation of water by activated carbon prepared from olive Stones. Desalination 222: 519-527.