Investigation of the Leaching Behavior of Copper-Containing Waste Sludge Using Different Acid Solutions

Murat Alkan

Article Details

Investigation of the Leaching Behavior of Copper-Containing Waste Sludge Using Different Acid Solutions

Authors:

Murat Alkan

Publisher:

Dokuz Eylul University

Main Topics:

Mühendislik

Journal:

Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi Vol.25 Issue 74, pp.467-480

Document Type:

Article

Publication Date:

5/2023

Document Language:

Turkish

Document ID (Org No.):

2001289565

pISSN:

1302-9304

Keywords:

Abstract:

 This study investigated the evaluation of copper-containing waste sludge using various acid solutions. Waste sludge was obtained as a by-product during the production of copper sulfate pentahydrate CuSO45H2O. 15-20 of the worlds copper production is realized by processing secondary raw materials scrap, slag, waste, etc.. This waste sludge should be evaluated since it has high copper content 26.44 Cu by wt.. Waste sludge was beneficiated by hydrometallurgical processes using different acid solutions sulfuric, hydrochloric, and nitric acid at varying temperatures 60C, 80C, solid-liquid ratio 15, 110, 120, and acid concentrations 1 M, 3 M. The highest Cu leaching efficiency was achieved with 99.6 wt.  by using a 3 M HNO3 solution at a solid-liquid ratio of 120 at 60 C. Minitab 21.2 Statistical Software was used for the statistical analysis of the leaching process. Analysis of factors and interactions, analysis of variance ANOVA, and linear regression analyses were calculated for selected factors and their levels. It has been found that the order of action of the factors is from high to low: SL ratio - Acid type - Molarity - Temperature. It has been determined that Acid type  SL ratio and Acid type  SL Ratio  Molarity interactions have a high effect on Cu leaching efficiency. The F0 , Fcritic and P-values are calculated for the 95 confidence level. The determination coefficient R2 value reached 99.49 in the linear regression analysis,. The equations based on temperature, solid-liquid ratio, and acid concentration are derived for each acid type.

 This study investigated the evaluation of copper-containing waste sludge using various acid solutions. Waste sludge was obtained as a by-product during the production of copper sulfate pentahydrate CuSO45H2O. 15-20 of the worlds copper production is realized by processing secondary raw materials scrap, slag, waste, etc.. This waste sludge should be evaluated since it has high copper content 26.44 Cu by wt.. Waste sludge was beneficiated by hydrometallurgical processes using different acid solutions sulfuric, hydrochloric, and nitric acid at varying temperatures 60C, 80C, solid-liquid ratio 15, 110, 120, and acid concentrations 1 M, 3 M. The highest Cu leaching efficiency was achieved with 99.6 wt.  by using a 3 M HNO3 solution at a solid-liquid ratio of 120 at 60 C. Minitab 21.2 Statistical Software was used for the statistical analysis of the leaching process. Analysis of factors and interactions, analysis of variance ANOVA, and linear regression analyses were calculated for selected factors and their levels. It has been found that the order of action of the factors is from high to low: SL ratio - Acid type - Molarity - Temperature. It has been determined that Acid type  SL ratio and Acid type  SL Ratio  Molarity interactions have a high effect on Cu leaching efficiency. The F0 , Fcritic and P-values are calculated for the 95 confidence level. The determination coefficient R2 value reached 99.49 in the linear regression analysis,. The equations based on temperature, solid-liquid ratio, and acid concentration are derived for each acid type.

 This study investigated the evaluation of copper-containing waste sludge using various acid solutions. Waste sludge was obtained as a by-product during the production of copper sulfate pentahydrate CuSO45H2O. 15-20 of the worlds copper production is realized by processing secondary raw materials scrap, slag, waste, etc.. This waste sludge should be evaluated since it has high copper content 26.44 Cu by wt.. Waste sludge was beneficiated by hydrometallurgical processes using different acid solutions sulfuric, hydrochloric, and nitric acid at varying temperatures 60C, 80C, solid-liquid ratio 15, 110, 120, and acid concentrations 1 M, 3 M. The highest Cu leaching efficiency was achieved with 99.6 wt.  by using a 3 M HNO3 solution at a solid-liquid ratio of 120 at 60 C. Minitab 21.2 Statistical Software was used for the statistical analysis of the leaching process. Analysis of factors and interactions, analysis of variance ANOVA, and linear regression analyses were calculated for selected factors and their levels. It has been found that the order of action of the factors is from high to low: SL ratio - Acid type - Molarity - Temperature. It has been determined that Acid type  SL ratio and Acid type  SL Ratio  Molarity interactions have a high effect on Cu leaching efficiency. The F0 , Fcritic and P-values are calculated for the 95 confidence level. The determination coefficient R2 value reached 99.49 in the linear regression analysis,. The equations based on temperature, solid-liquid ratio, and acid concentration are derived for each acid type.

 Bu çalışmada, bakır içerikli bir malzeme olan ve bakır sülfat pentahidrat CuSO45H2O üretimi sırasında oluşan atık çamurun çeşitli asit çözeltileri kullanılarak değerlendirilme olanaklarının araştırılması amaçlanmıştır. Dünya bakır üretiminin  15-20si ikincil hammaddelerin hurda, curuf, atık, v.b. işlenmesi ile gerçekleşmektedir. CuSO45H2O üretiminde açığa çıkan atık çamurun yüksek bakır içeriğine sahip olması ağ.  26,44 Cu, bu atık malzemenin değerlendirilmesini gerekli kılmaktadır. Atık çamur, farklı asit çözeltilerinin sülfürik asit, hidroklorik asit, nitrik asit değişen sıcaklık 60C, 80C, katı-sıvı oranı 15, 110, 120 ve asit konsantrasyonunda 1 M, 3 M; hidrometalurjik süreçler kullanılarak değerlendirilmiştir. Ağırlıkça  99,6ya varan değerlerde bakır çözeltiye alma verimine 120 katı-sıvı oranındaki 3 M HNO3 çözeltisinin 60 C sıcaklıkta kullanılmasıyla ulaşılmıştır. Çözültiye alma işleminin istatistiksel analizi için Minitab 21.2 İstatistiksel Yazılımı kullanılmış, seçilen faktör ve seviyelerinde, faktör ve etkileşimlerin analizi, varyans analizi ANOVA ve lineer regresyon analizleri hesaplanmıştır. Faktörlerin etki sırası, yüksekten düşüğe doğru, KS oranı  Asit türü  Molarite  Sıcaklık şeklinde olduğu bulunmuştur. Asit türü  KS oranı ve Asit türü  KS Oranı  Molarite etkileşimlerinin verim üzerine yüksek etkiye sahip olduğu tespit edilmiştir. F0 , Fkritik ve P-değerleri  95 güvenirlilik seviyesi için hesaplanmış olup, yapılan lineer regresyon analizlerinde  99,49a ulaşan determinasyon katsayısı R2 değerine ulaşılmıştır. Her bir asit türü için sıcaklık, katı-sıvı oranı ve asit konsantrasyonuna bağlı denklemler türetilmiştir.

Article Details

Investigation of the Leaching Behavior of Copper-Containing Waste Sludge Using Different Acid Solutions

Authors:

Murat Alkan

Publisher:

Dokuz Eylul University

Main Topics:

Mühendislik

Journal:

Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi Vol.25 Issue 74, pp.467-480

Document Type:

Article

Publication Date:

5/2023

Document Language:

Turkish

Document ID (Org No.):

2001289565

pISSN:

1302-9304

Waste Recovery

Copper

Leaching

Statistical AnalysisAtık Kazanımı

Bakır

Çözeltiye Alma

İstatistiksel Analiz

Issues

Article Details

Authors: Murat Alkan

Publisher: Dokuz Eylul University

Main Topics: Mühendislik

Journal: Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi Vol.25 Issue 74, pp.467-480

Document Type: Article

Publication Date: 5/2023

Document Language: Turkish

Document ID (Org No.): 2001289565

pISSN: 1302-9304

Issues

Authors:

Murat Alkan

Publisher:

Dokuz Eylul University

Main Topics:

Mühendislik

Journal:

Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi Vol.25 Issue 74, pp.467-480

Document Type:

Article

Publication Date:

5/2023

Document Language:

Turkish

Document ID (Org No.):

2001289565

pISSN:

1302-9304