H2SO4 ile Aktive Edilen Fıstık Kabuğu Kullanılarak Sürekli Sistem Kolonda Sucul Çözeltiden Asidik Boya Giderimi

Year 2019, , 697 - 708, 31.12.2019

İlknur Şentürk , Mazen Alzeın

https://doi.org/10.35414/akufemubid.568263

Cited By: 2

Abstract

Bu
çalışmanın amacı asidik bir boya olan Asit Viyolet 17 boyasının adsorpsiyon
kolonunda arıtılabilirliğini araştırmaktır. Tarımsal bir atık materyal olan
Antep fıstığı kabukları asitle aktive edildikten sonra kolon dolgu materyali
olarak kullanılmıştır. Aktive edilen fıstık kabuklarının fizikokimyasal
özellikleri FTIR ve BET analizleri ile karakterize edilmiştir. Hazırlanan
adsorbanın adsorpsiyon kapasitesinin, BET yüzey alanıyla pozitif ilişkili
olduğu görülmüştür. Sürekli sistem adsorpsiyon deneyleri, asitle
aktive edilmiş fıstık kabuğu ile doldurulan bir sabit kolonda
gerçekleştirilmiştir. Seçilen çalışma parametrelerinin her biri için, çıkış suyu
konsantrasyonunun giriş konsantrasyonuna oranına (C_t/C_i)
karşılık belirli sürelerde okunan değerler grafiğe geçirilerek kırılma eğrileri
çizilmiştir. Kırılma eğrisi verilerine göre seçilen en iyi koşullarda (2 cm
yatak yüksekliği, 6 mL/dk akış hızı ve 40 mg/L başlangıç konsantrasyonu) elde
edilen adsorpsiyon kapasitesi (q_m) 13,66 mg/g’dır. Son olarak 0,2 M
NaOH çözeltisi ile adsorban yatağının rejenerasyonu incelenmiştir. Çalışma
sonuçları kullanılan adsorbanın rejenerasyon sonrası adsorplama kapasitesinin,
düşük olduğunu göstermiştir. Kırılma eğrisinden elde edilen veriler Adams-Bohart, Thomas ve Yoon-Nelson
modellerine uyarlanmıştır. Sonuçlar Thomas modelin kırılma eğrilerinin
tanımlanması için daha uygun olduğunu göstermektedir.

Keywords

Aktivasyon, Adsorpsiyon, Kırılma eğrileri, Kolon çalışması, Modeller

Supporting Institution

Sivas Cumhuriyet Üniversitesi CÜBAP

Project Number

M-661

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