Salt production from coal-mine brine in ED-evaporation-crystallization system

Marian Turek; Piotr Dydo; Romuald Klimek

doi:10.1016/j.desal.2005.03.047

Salt production from coal-mine brine in ED-evaporation-crystallization system

Marian Turek
, Piotr Dydo
, Romuald Klimek

Department of Inorganic Chemistry, Analytical Chemistry and Electrochemistry (RCH/RCH1)

Debiensko Desalination Plant

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

57 Citations (Scopus)

Abstract

ED-EDR double step electrodialytic pre-treatment and pre-concentration of "Debiensko" coal-mine brine was examined. Univalent ion permeable Tokuyama Co. ACS and CMS membranes were applied in the first electrodialysis step and normal grade CMV, AMV Asahi Glass membranes in the second. Coal-mine brine with 32.8 g/L Cl^- content was desalinated and concentrated at a current density of 344-688 A/m² in the first step and 300 A/m² in the second. The total ED-EDR energy consumption found was in the range for 9.4-14.4 kWh/m³ of inlet brine depending on applied electric current density. The performance of crystallization step was then estimated based on chemical compositions of ED concentrates and compared with data from the "Debiensko" Desalination Plant, where currently a salt crystallizer is supplied with brine concentrated by RCC evaporation method. This comparison shows that unit energy consumption decreases from ca 970 kWh per 1 ton of evaporated salt for brine treated by RCC method to ca 500 kWh/t in the case of ED-EDR treated brine. At the same time the amount of salt in lye decreases from 110 kg per 1 ton of evaporated salt produced to 20 kg/t.

Original language	English
Pages (from-to)	439-446
Number of pages	8
Journal	Desalination
Volume	184
Issue number	1-3
DOIs	https://doi.org/10.1016/j.desal.2005.03.047
Publication status	Published - 1 Nov 2005

UN SDGs

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

SDG 6 Clean Water and Sanitation

Keywords

Desalination
Electrodialysis
Electrodialysis reversal
Evaporation
Integrated systems
Salt production

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science
Water Science and Technology
Mechanical Engineering

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10.1016/j.desal.2005.03.047

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title = "Salt production from coal-mine brine in ED-evaporation-crystallization system",

abstract = "ED-EDR double step electrodialytic pre-treatment and pre-concentration of {"}Debiensko{"} coal-mine brine was examined. Univalent ion permeable Tokuyama Co. ACS and CMS membranes were applied in the first electrodialysis step and normal grade CMV, AMV Asahi Glass membranes in the second. Coal-mine brine with 32.8 g/L Cl- content was desalinated and concentrated at a current density of 344-688 A/m2 in the first step and 300 A/m2 in the second. The total ED-EDR energy consumption found was in the range for 9.4-14.4 kWh/m3 of inlet brine depending on applied electric current density. The performance of crystallization step was then estimated based on chemical compositions of ED concentrates and compared with data from the {"}Debiensko{"} Desalination Plant, where currently a salt crystallizer is supplied with brine concentrated by RCC evaporation method. This comparison shows that unit energy consumption decreases from ca 970 kWh per 1 ton of evaporated salt for brine treated by RCC method to ca 500 kWh/t in the case of ED-EDR treated brine. At the same time the amount of salt in lye decreases from 110 kg per 1 ton of evaporated salt produced to 20 kg/t.",

keywords = "Desalination, Electrodialysis, Electrodialysis reversal, Evaporation, Integrated systems, Salt production",

author = "Marian Turek and Piotr Dydo and Romuald Klimek",

year = "2005",

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doi = "10.1016/j.desal.2005.03.047",

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T1 - Salt production from coal-mine brine in ED-evaporation-crystallization system

AU - Turek, Marian

AU - Dydo, Piotr

AU - Klimek, Romuald

PY - 2005/11/1

Y1 - 2005/11/1

N2 - ED-EDR double step electrodialytic pre-treatment and pre-concentration of "Debiensko" coal-mine brine was examined. Univalent ion permeable Tokuyama Co. ACS and CMS membranes were applied in the first electrodialysis step and normal grade CMV, AMV Asahi Glass membranes in the second. Coal-mine brine with 32.8 g/L Cl- content was desalinated and concentrated at a current density of 344-688 A/m2 in the first step and 300 A/m2 in the second. The total ED-EDR energy consumption found was in the range for 9.4-14.4 kWh/m3 of inlet brine depending on applied electric current density. The performance of crystallization step was then estimated based on chemical compositions of ED concentrates and compared with data from the "Debiensko" Desalination Plant, where currently a salt crystallizer is supplied with brine concentrated by RCC evaporation method. This comparison shows that unit energy consumption decreases from ca 970 kWh per 1 ton of evaporated salt for brine treated by RCC method to ca 500 kWh/t in the case of ED-EDR treated brine. At the same time the amount of salt in lye decreases from 110 kg per 1 ton of evaporated salt produced to 20 kg/t.

AB - ED-EDR double step electrodialytic pre-treatment and pre-concentration of "Debiensko" coal-mine brine was examined. Univalent ion permeable Tokuyama Co. ACS and CMS membranes were applied in the first electrodialysis step and normal grade CMV, AMV Asahi Glass membranes in the second. Coal-mine brine with 32.8 g/L Cl- content was desalinated and concentrated at a current density of 344-688 A/m2 in the first step and 300 A/m2 in the second. The total ED-EDR energy consumption found was in the range for 9.4-14.4 kWh/m3 of inlet brine depending on applied electric current density. The performance of crystallization step was then estimated based on chemical compositions of ED concentrates and compared with data from the "Debiensko" Desalination Plant, where currently a salt crystallizer is supplied with brine concentrated by RCC evaporation method. This comparison shows that unit energy consumption decreases from ca 970 kWh per 1 ton of evaporated salt for brine treated by RCC method to ca 500 kWh/t in the case of ED-EDR treated brine. At the same time the amount of salt in lye decreases from 110 kg per 1 ton of evaporated salt produced to 20 kg/t.

KW - Desalination

KW - Electrodialysis

KW - Electrodialysis reversal

KW - Evaporation

KW - Integrated systems

KW - Salt production

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ER -

Salt production from coal-mine brine in ED-evaporation-crystallization system

Abstract

UN SDGs

Keywords

ASJC Scopus subject areas

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