Calcium sulphate scale prevention in a desalination unit using the SMCEC technique

S. Ben Ahmed; M. Tlili; M. Ben Amor; H. Ben Bacha; B. Elleuch

doi:10.1016/j.desal.2004.06.140

Calcium sulphate scale prevention in a desalination unit using the SMCEC technique

S. Ben Ahmed
, M. Tlili
, M. Ben Amor
, H. Ben Bacha
, B. Elleuch

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

43 Scopus citations

Abstract

The desalination unit UTAIM using the solar multiple condensation evaporation cycle principle (SMCEC) is confronted with the problem of heat-exchange surface plugging by dihydrate calcium sulphate. The aim of this work is the prevention of this scale problem by using chemical inhibitors. The kinetics of calcium sulphate nucleation and crystalline growth increase with temperature. At all operating temperatures, the solution keeps a large metastable domain. The supersaturation coefficient β at the end of precipitation is about of 2.5. In presence of increasing quantities of chemical inhibitors (RPI 2000, Flocon 260, STPP, Permatreat), the precipitation kinetics decrease. The RPI 2000 (polyacrylate) sharply inhibits the formation of sulphate scale at high and low temperature.

Original language	English
Pages (from-to)	311-318
Number of pages	8
Journal	Desalination
Volume	167
Issue number	1-3
DOIs	https://doi.org/10.1016/j.desal.2004.06.140
State	Published - 15 Aug 2004
Externally published	Yes

UN SDGs

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

SDG 6 Clean Water and Sanitation

Keywords

Chemical inhibitors
Desalination unit
Dihydrate calcium sulphate
Precipitation kinetics
Scale problem

Access to Document

10.1016/j.desal.2004.06.140

Cite this

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title = "Calcium sulphate scale prevention in a desalination unit using the SMCEC technique",

abstract = "The desalination unit UTAIM using the solar multiple condensation evaporation cycle principle (SMCEC) is confronted with the problem of heat-exchange surface plugging by dihydrate calcium sulphate. The aim of this work is the prevention of this scale problem by using chemical inhibitors. The kinetics of calcium sulphate nucleation and crystalline growth increase with temperature. At all operating temperatures, the solution keeps a large metastable domain. The supersaturation coefficient β at the end of precipitation is about of 2.5. In presence of increasing quantities of chemical inhibitors (RPI 2000, Flocon 260, STPP, Permatreat), the precipitation kinetics decrease. The RPI 2000 (polyacrylate) sharply inhibits the formation of sulphate scale at high and low temperature.",

keywords = "Chemical inhibitors, Desalination unit, Dihydrate calcium sulphate, Precipitation kinetics, Scale problem",

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doi = "10.1016/j.desal.2004.06.140",

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T1 - Calcium sulphate scale prevention in a desalination unit using the SMCEC technique

AU - Ahmed, S. Ben

AU - Tlili, M.

AU - Amor, M. Ben

AU - Bacha, H. Ben

AU - Elleuch, B.

PY - 2004/8/15

Y1 - 2004/8/15

N2 - The desalination unit UTAIM using the solar multiple condensation evaporation cycle principle (SMCEC) is confronted with the problem of heat-exchange surface plugging by dihydrate calcium sulphate. The aim of this work is the prevention of this scale problem by using chemical inhibitors. The kinetics of calcium sulphate nucleation and crystalline growth increase with temperature. At all operating temperatures, the solution keeps a large metastable domain. The supersaturation coefficient β at the end of precipitation is about of 2.5. In presence of increasing quantities of chemical inhibitors (RPI 2000, Flocon 260, STPP, Permatreat), the precipitation kinetics decrease. The RPI 2000 (polyacrylate) sharply inhibits the formation of sulphate scale at high and low temperature.

AB - The desalination unit UTAIM using the solar multiple condensation evaporation cycle principle (SMCEC) is confronted with the problem of heat-exchange surface plugging by dihydrate calcium sulphate. The aim of this work is the prevention of this scale problem by using chemical inhibitors. The kinetics of calcium sulphate nucleation and crystalline growth increase with temperature. At all operating temperatures, the solution keeps a large metastable domain. The supersaturation coefficient β at the end of precipitation is about of 2.5. In presence of increasing quantities of chemical inhibitors (RPI 2000, Flocon 260, STPP, Permatreat), the precipitation kinetics decrease. The RPI 2000 (polyacrylate) sharply inhibits the formation of sulphate scale at high and low temperature.

KW - Chemical inhibitors

KW - Desalination unit

KW - Dihydrate calcium sulphate

KW - Precipitation kinetics

KW - Scale problem

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DO - 10.1016/j.desal.2004.06.140

M3 - Article

AN - SCOPUS:7544229702

SN - 0011-9164

VL - 167

SP - 311

EP - 318

JO - Desalination

JF - Desalination

IS - 1-3

ER -

Calcium sulphate scale prevention in a desalination unit using the SMCEC technique

Abstract

UN SDGs

Keywords

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