Use of Activated and Modified Pumice Stone for Removal of Mercury (II) and Arsenic (III) Ions From Aqueous Solution

Vedia Nüket Tirtom

Makale detayları

Use of Activated and Modified Pumice Stone for Removal of Mercury (II) and Arsenic (III) Ions From Aqueous Solution

Yazarlar:

Vedia Nüket Tirtom

Yayıncı:

Erzincan Binali Yildirim University

Ana Başlıklar:

Separasyon Bilimi

Dergi:

Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.17 Issue 2, pp.308-326

Belge Tipi:

Makale

Yayın Tarihi:

8/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001325566

pISSN:

2149-4584

Anahtar kelimeler:

Özet:

 Removal of Hg II and As III ions from aqueous solutions using activated and modified pumice stone were investigated. The pH, temperature, initial metal ion concentration which are very important for removal studies, were investigated by batch method. The experiments demonstrated that the equilibrium adsorption data ﬁt the Freundlich isotherm model well for Hg II and As III ions. The negative value of ΔH  -199.92 kJ mol-1 and -78,15 kJ mol-1 for mercury II and arsenic III ions indicates that the adsorption process is exothermic. ΔS were calculated as -267.85 J K-1 mol-1 for As III ions and the positive value of ΔS  0.69 kJ K-1 mol-1 for Hg II ions. The negative value of ΔG-405.14 kJ mol-1 for Hg II ions and -1.67 kJ mol-1 for As III ions indicates that adsorption is voluntary. EDTA has been found to be a good desorbent in desorption studies to recover arsenic and Hg ions. The experiments show that pumice stone can be used for Hg II and As III removal in aqueous solution.

 Removal of Hg II and As III ions from aqueous solutions using activated and modified pumice stone were investigated. The pH, temperature, initial metal ion concentration which are very important for removal studies, were investigated by batch method. The experiments demonstrated that the equilibrium adsorption data ﬁt the Freundlich isotherm model well for Hg II and As III ions. The negative value of ΔH  -199.92 kJ mol-1 and -78,15 kJ mol-1 for mercury II and arsenic III ions indicates that the adsorption process is exothermic. ΔS were calculated as -267.85 J K-1 mol-1 for As III ions and the positive value of ΔS  0.69 kJ K-1 mol-1 for Hg II ions. The negative value of ΔG-405.14 kJ mol-1 for Hg II ions and -1.67 kJ mol-1 for As III ions indicates that adsorption is voluntary. EDTA has been found to be a good desorbent in desorption studies to recover arsenic and Hg ions. The experiments show that pumice stone can be used for Hg II and As III removal in aqueous solution.

 Removal of Hg II and As III ions from aqueous solutions using activated and modified pumice stone were investigated. The pH, temperature, initial metal ion concentration which are very important for removal studies, were investigated by batch method. The experiments demonstrated that the equilibrium adsorption data ﬁt the Freundlich isotherm model well for Hg II and As III ions. The negative value of ΔH  -199.92 kJ mol-1 and -78,15 kJ mol-1 for mercury II and arsenic III ions indicates that the adsorption process is exothermic. ΔS were calculated as -267.85 J K-1 mol-1 for As III ions and the positive value of ΔS  0.69 kJ K-1 mol-1 for Hg II ions. The negative value of ΔG-405.14 kJ mol-1 for Hg II ions and -1.67 kJ mol-1 for As III ions indicates that adsorption is voluntary. EDTA has been found to be a good desorbent in desorption studies to recover arsenic and Hg ions. The experiments show that pumice stone can be used for Hg II and As III removal in aqueous solution.

 Removal of Hg II and As III ions from aqueous solutions using activated and modified pumice stone were investigated. The pH, temperature, initial metal ion concentration which are very important for removal studies, were investigated by batch method. The experiments demonstrated that the equilibrium adsorption data ﬁt the Freundlich isotherm model well for Hg II and As III ions. The negative value of ΔH  -199.92 kJ mol-1 and -78,15 kJ mol-1 for mercury II and arsenic III ions indicates that the adsorption process is exothermic. ΔS were calculated as -267.85 J K-1 mol-1 for As III ions and the positive value of ΔS  0.69 kJ K-1 mol-1 for Hg II ions. The negative value of ΔG-405.14 kJ mol-1 for Hg II ions and -1.67 kJ mol-1 for As III ions indicates that adsorption is voluntary. EDTA has been found to be a good desorbent in desorption studies to recover arsenic and Hg ions. The experiments show that pumice stone can be used for Hg II and As III removal in aqueous solution.

Makale detayları

Use of Activated and Modified Pumice Stone for Removal of Mercury (II) and Arsenic (III) Ions From Aqueous Solution

Yazarlar:

Vedia Nüket Tirtom

Yayıncı:

Erzincan Binali Yildirim University

Ana Başlıklar:

Separasyon Bilimi

Dergi:

Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.17 Issue 2, pp.308-326

Belge Tipi:

Makale

Yayın Tarihi:

8/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001325566

pISSN:

2149-4584

Adsorption

Arsenic

Mercury

Pumice stone

Wastewater

Sayı

Makale detayları

Use of Activated and Modified Pumice Stone for Removal of Mercury (II) and Arsenic (III) Ions From Aqueous Solution

Yazarlar: Vedia Nüket Tirtom

Yayıncı: Erzincan Binali Yildirim University

Ana Başlıklar: Separasyon Bilimi

Dergi: Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.17 Issue 2, pp.308-326

Belge Tipi: Makale

Yayın Tarihi: 8/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001325566

pISSN: 2149-4584

Adsorption

Arsenic

Mercury

Pumice stone

Wastewater

Sayı

Yazarlar:

Vedia Nüket Tirtom

Yayıncı:

Erzincan Binali Yildirim University

Ana Başlıklar:

Separasyon Bilimi

Dergi:

Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.17 Issue 2, pp.308-326

Belge Tipi:

Makale

Yayın Tarihi:

8/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001325566

pISSN:

2149-4584