Industrial products and wastes as adsorbents for sulphate and chloride removal from synthetic alkaline solution and mine process water

Evgenia Iakovleva; Ermei Mäkilä; Jarno Salonen; Maciej Sitarz; Mika Sillanpää

doi:10.1016/j.cej.2014.07.091

Industrial products and wastes as adsorbents for sulphate and chloride removal from synthetic alkaline solution and mine process water

Evgenia Iakovleva, Ermei Mäkilä, Jarno Salonen, Maciej Sitarz, Mika Sillanpää

Research output: Contribution to journal › Article › peer-review

56 Citations (Scopus)

Abstract

Two limestones and two solid wastes were tested as adsorbents for chloride and sulphate ion removal from synthetic and real alkaline process mining water. The composition and surface structure of the adsorbents were analysed by ED-XRF, XRD, SEM and MIR spectroscopy and the nitrogen adsorption method. The optimal adsorption time and amount of adsorbent were determined by batch analysis with an anion concentration of 20mg/L. In synthetic solution adsorbents removed 99% of SO₄^2- and 96% of Cl^- and in real process water the removal rate was 85% and 74% for SO₄^2- and Cl^-, respectively. It was found that equilibrium could successfully be fitted to the Langmuir, Toth and BiLangmuir adsorption isotherms.

Original language	English
Pages (from-to)	364-371
Number of pages	8
Journal	Chemical Engineering Journal
Volume	259
DOIs	https://doi.org/10.1016/j.cej.2014.07.091
Publication status	Published - 1 Jan 2015
Externally published	Yes

Keywords

Adsorption
Chloride and sulphate ions removal
Mining process water treatment

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.cej.2014.07.091

Cite this

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title = "Industrial products and wastes as adsorbents for sulphate and chloride removal from synthetic alkaline solution and mine process water",

abstract = "Two limestones and two solid wastes were tested as adsorbents for chloride and sulphate ion removal from synthetic and real alkaline process mining water. The composition and surface structure of the adsorbents were analysed by ED-XRF, XRD, SEM and MIR spectroscopy and the nitrogen adsorption method. The optimal adsorption time and amount of adsorbent were determined by batch analysis with an anion concentration of 20mg/L. In synthetic solution adsorbents removed 99% of SO42- and 96% of Cl- and in real process water the removal rate was 85% and 74% for SO42- and Cl-, respectively. It was found that equilibrium could successfully be fitted to the Langmuir, Toth and BiLangmuir adsorption isotherms.",

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TY - JOUR

T1 - Industrial products and wastes as adsorbents for sulphate and chloride removal from synthetic alkaline solution and mine process water

AU - Iakovleva, Evgenia

AU - Mäkilä, Ermei

AU - Salonen, Jarno

AU - Sitarz, Maciej

AU - Sillanpää, Mika

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Two limestones and two solid wastes were tested as adsorbents for chloride and sulphate ion removal from synthetic and real alkaline process mining water. The composition and surface structure of the adsorbents were analysed by ED-XRF, XRD, SEM and MIR spectroscopy and the nitrogen adsorption method. The optimal adsorption time and amount of adsorbent were determined by batch analysis with an anion concentration of 20mg/L. In synthetic solution adsorbents removed 99% of SO42- and 96% of Cl- and in real process water the removal rate was 85% and 74% for SO42- and Cl-, respectively. It was found that equilibrium could successfully be fitted to the Langmuir, Toth and BiLangmuir adsorption isotherms.

AB - Two limestones and two solid wastes were tested as adsorbents for chloride and sulphate ion removal from synthetic and real alkaline process mining water. The composition and surface structure of the adsorbents were analysed by ED-XRF, XRD, SEM and MIR spectroscopy and the nitrogen adsorption method. The optimal adsorption time and amount of adsorbent were determined by batch analysis with an anion concentration of 20mg/L. In synthetic solution adsorbents removed 99% of SO42- and 96% of Cl- and in real process water the removal rate was 85% and 74% for SO42- and Cl-, respectively. It was found that equilibrium could successfully be fitted to the Langmuir, Toth and BiLangmuir adsorption isotherms.

KW - Adsorption

KW - Chloride and sulphate ions removal

KW - Mining process water treatment

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U2 - 10.1016/j.cej.2014.07.091

DO - 10.1016/j.cej.2014.07.091

M3 - Article

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SN - 1385-8947

VL - 259

SP - 364

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JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

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Industrial products and wastes as adsorbents for sulphate and chloride removal from synthetic alkaline solution and mine process water

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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