Mineral recovery from inland reverse osmosis concentrate using isothermal evaporation

Farah Mohammadesmaeili; Mostafa Kabiri Badr; Morteza Abbaszadegan; Peter Fox

doi:10.1016/j.watres.2010.07.070

Mineral recovery from inland reverse osmosis concentrate using isothermal evaporation

Farah Mohammadesmaeili, Mostafa Kabiri Badr, Morteza Abbaszadegan, Peter Fox

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

35 Scopus citations

Abstract

Mineral recovery from reverse osmosis (RO) concentrate after concentration by a secondary sea water-type RO system with lime-soda pretreatment was the focus of this study. Lime-soda pretreatment removed Ca, Mg and Si allowing for the application of sea water-type RO resulting in a concentrate composed of sodium, potassium, sulfate and chloride. The overall objective was reduction in concentrate volume that will require disposal by evaporation while producing by-products with potential resale value. Thermodynamic phase equilibrium calculations using Pitzer's correlations for 25 °C, accurately predicted the solubility and evaporation path of the sodium sulfate minerals as potential by-products. Bench-scale evaporation experiments verified the model predictions and indicated that 81-88% of the sodium sulfate by-products were Na₂SO₄.

Original language	English (US)
Pages (from-to)	6021-6030
Number of pages	10
Journal	Water Research
Volume	44
Issue number	20
DOIs	https://doi.org/10.1016/j.watres.2010.07.070
State	Published - Dec 2010

Keywords

By-product
Concentrate
Evaporation
Mineral recovery
Reverse osmosis

ASJC Scopus subject areas

Ecological Modeling
Water Science and Technology
Waste Management and Disposal
Pollution

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10.1016/j.watres.2010.07.070

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title = "Mineral recovery from inland reverse osmosis concentrate using isothermal evaporation",

abstract = "Mineral recovery from reverse osmosis (RO) concentrate after concentration by a secondary sea water-type RO system with lime-soda pretreatment was the focus of this study. Lime-soda pretreatment removed Ca, Mg and Si allowing for the application of sea water-type RO resulting in a concentrate composed of sodium, potassium, sulfate and chloride. The overall objective was reduction in concentrate volume that will require disposal by evaporation while producing by-products with potential resale value. Thermodynamic phase equilibrium calculations using Pitzer's correlations for 25 °C, accurately predicted the solubility and evaporation path of the sodium sulfate minerals as potential by-products. Bench-scale evaporation experiments verified the model predictions and indicated that 81-88% of the sodium sulfate by-products were Na2SO4.",

keywords = "By-product, Concentrate, Evaporation, Mineral recovery, Reverse osmosis",

author = "Farah Mohammadesmaeili and Badr, {Mostafa Kabiri} and Morteza Abbaszadegan and Peter Fox",

note = "Funding Information: The authors acknowledge the following agencies and utilities for providing funding and support for this tailored collaborative research project: American Water Works Association Research Foundation (Denver, Colorado); cities of Phoenix, Scottsdale, and Goodyear (Arizona); and the National Science Foundation Water Quality Center at Arizona State University (Tempe, Arizona).",

year = "2010",

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doi = "10.1016/j.watres.2010.07.070",

language = "English (US)",

volume = "44",

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AU - Mohammadesmaeili, Farah

AU - Badr, Mostafa Kabiri

AU - Abbaszadegan, Morteza

AU - Fox, Peter

N1 - Funding Information: The authors acknowledge the following agencies and utilities for providing funding and support for this tailored collaborative research project: American Water Works Association Research Foundation (Denver, Colorado); cities of Phoenix, Scottsdale, and Goodyear (Arizona); and the National Science Foundation Water Quality Center at Arizona State University (Tempe, Arizona).

PY - 2010/12

Y1 - 2010/12

N2 - Mineral recovery from reverse osmosis (RO) concentrate after concentration by a secondary sea water-type RO system with lime-soda pretreatment was the focus of this study. Lime-soda pretreatment removed Ca, Mg and Si allowing for the application of sea water-type RO resulting in a concentrate composed of sodium, potassium, sulfate and chloride. The overall objective was reduction in concentrate volume that will require disposal by evaporation while producing by-products with potential resale value. Thermodynamic phase equilibrium calculations using Pitzer's correlations for 25 °C, accurately predicted the solubility and evaporation path of the sodium sulfate minerals as potential by-products. Bench-scale evaporation experiments verified the model predictions and indicated that 81-88% of the sodium sulfate by-products were Na2SO4.

AB - Mineral recovery from reverse osmosis (RO) concentrate after concentration by a secondary sea water-type RO system with lime-soda pretreatment was the focus of this study. Lime-soda pretreatment removed Ca, Mg and Si allowing for the application of sea water-type RO resulting in a concentrate composed of sodium, potassium, sulfate and chloride. The overall objective was reduction in concentrate volume that will require disposal by evaporation while producing by-products with potential resale value. Thermodynamic phase equilibrium calculations using Pitzer's correlations for 25 °C, accurately predicted the solubility and evaporation path of the sodium sulfate minerals as potential by-products. Bench-scale evaporation experiments verified the model predictions and indicated that 81-88% of the sodium sulfate by-products were Na2SO4.

KW - By-product

KW - Concentrate

KW - Evaporation

KW - Mineral recovery

KW - Reverse osmosis

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JO - Water Research

JF - Water Research

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ER -

Mineral recovery from inland reverse osmosis concentrate using isothermal evaporation

Abstract

Keywords

ASJC Scopus subject areas

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