Sulu Çözeltiden Bakır (II) Adsorpsiyon Sürecinin Optimizasyonunda Yüzey Yanıt Metodolojisinin Uygulanması

Year 2018, Volume: 6 Issue: 3, 182 - 191, 30.09.2018

Yunus Şimşek

https://doi.org/10.21541/apjes.393848

Cited By: 2

Abstract

Bu çalışmada sulu çözeltilerden Bakır (II) giderimi
için ham Brassica Napus bitki sapları adsorban olarak kullanılmıştır. Kesikli
adsorpsiyon deneylerinde sabit 120 dakikalık temas süresince, pH (2-10), metal
çözelti derişimi (2-10 mg/L), adsorban miktarı (0.03-0.07 g), ve sıcaklık
(30-50 °C) adsorpsiyon deney değişkenleri olarak seçilmiştir.  Bu dört bağımsız değişken yüzey merkezli
merkezi birleşik tasarımına dayanan yüzey yanıt yöntemi kullanılarak optimize
edilmiştir. Bakır (II) adsorpsiyonu için optimum koşullar 7.3 mg/L bakır (II)
iyon derişimi, 5.9 pH, 0.03 g adsorban miktarı ve 33 °C olduğu yüzey merkezli
merkezi birleşik tasarım yöntemi ile bulunmuştur. Elde edilen bu optimum koşullarda,
adsorbanının  %79 kadar Bakır (II) ağır
metal giderimini gerçekleştirdiği deneysel yöntemlerle hesaplanmıştır. Önerilen
yüzey merkezli merkezi birleşik tasarımının iyi bir doğruluk ve yüksek
regresyon katsayına (R²=0.992) sahip en iyi istatiksel yöntem olduğu
bulunmuştur. Sonuçlar açık bir biçimde Brassica Napus bitki saplarının ucuz bir
adsorban olarak Bakır (II) giderimi için kullanılabileceğini göstermektedir.

Keywords

Adsorpsiyon, Bakır (II) giderimi, yüzey yanıt yöntemi, optimizasyon

Application of Response Surface Methodology in the Optimization of Copper (II) Adsorption Process from Aqueous Solution

Abstract

In this study, Brassica Napus straw was used as an
adsorbent to eliminate Copper (II) from aqueous solution. In batch adsorption
experiments with a fixed contact time of 120 min, experimental variables were
selected as pH (2-10), metal solution concentration (2-10 mg/L), adsorbent
dosage (0.03-0.07 g), and temperature (30-50 °C). These four independent
variables were optimized using response surface methodology based on a
four-independent variable face-centered central composite design. The optimum
conditions for Copper (II) adsorption were found to be Copper (II) ion
concentration of 7.3 mg/L, pH of 5.9, 0.03 g of adsorbent dosage, and
temperature of 33 °C . At the optimized conditions, up to 79 % Copper (II)
heavy metal ions managed to remove from heavy metal solution onto Brassica
Napus straw. The face-centered central composite design proposed turned out be
the best statistical model to predict the response with good accuracy and a high
regression coefficient (R²=0.992).
Results clearly suggest that Brassica Napus straw can be used for the Copper
(II) adsorption as a low-cost adsorbent.

Keywords

Adsorption, Copper (II) removal, response surface methodology, optimization

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