Crystallisation kinetics of ZnS precipitation; an experimental study using the mixed-suspension-mixed-product-removal (MSMPR) method

M.Y.M. Al Tarazi; Albertus B.M. Heesink; Mohammed O.J. Azzam; Salah Abu Yahya; Geert Versteeg

doi:10.1002/crat.200310238

Crystallisation kinetics of ZnS precipitation; an experimental study using the mixed-suspension-mixed-product-removal (MSMPR) method

M.Y.M. Al Tarazi, Albertus B.M. Heesink, Mohammed O.J. Azzam, Salah Abu Yahya, Geert Versteeg

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

27 Citations (Scopus)

2 Downloads (Pure)

Abstract

The precipitation kinetics of zinc sulfide were studied using a lab scale mixed-suspension-mixed-product-removal (MSMPR) precipitation reactor. The vessel was operated at different feed concentrations, molar ratios, stirrer speeds, pH-values, feed injection positions and residence times. Primary nucleation and volume average crystal growth rates as well as agglomeration kernel were determined. Relationships were found between the rates of the different crystallization steps on the one hand and supersaturation, stirrer speeds, pH-values, Zn2+ to S2- ratio, feed positions on the other. These show that larger crystals are obtained at high supersaturation, moderate stirrer speeds, small residence times, a pH-value of around 5 and high Zn2+ to S2- ratios. One should realize though that the applied MSMPR method is not the most optimal technique for examining fast precipitation reactions.

Original language	Undefined
Pages (from-to)	675-685
Number of pages	11
Journal	Crystal research and technology
Volume	39
Issue number	8
DOIs	https://doi.org/10.1002/crat.200310238
Publication status	Published - 2004

Keywords

zinc sulfide
Nucleation
Growth
Agglomeration
IR-71993
METIS-226512
Precipitation kinetics

Access to Document

10.1002/crat.200310238

Cite this

@article{f54682ac743a4448b3e0015202fd39cd,

title = "Crystallisation kinetics of ZnS precipitation; an experimental study using the mixed-suspension-mixed-product-removal (MSMPR) method",

abstract = "The precipitation kinetics of zinc sulfide were studied using a lab scale mixed-suspension-mixed-product-removal (MSMPR) precipitation reactor. The vessel was operated at different feed concentrations, molar ratios, stirrer speeds, pH-values, feed injection positions and residence times. Primary nucleation and volume average crystal growth rates as well as agglomeration kernel were determined. Relationships were found between the rates of the different crystallization steps on the one hand and supersaturation, stirrer speeds, pH-values, Zn2+ to S2- ratio, feed positions on the other. These show that larger crystals are obtained at high supersaturation, moderate stirrer speeds, small residence times, a pH-value of around 5 and high Zn2+ to S2- ratios. One should realize though that the applied MSMPR method is not the most optimal technique for examining fast precipitation reactions.",

keywords = "zinc sulfide, Nucleation, Growth, Agglomeration, IR-71993, METIS-226512, Precipitation kinetics",

author = "{Al Tarazi}, M.Y.M. and Heesink, {Albertus B.M.} and Azzam, {Mohammed O.J.} and Yahya, {Salah Abu} and Geert Versteeg",

year = "2004",

doi = "10.1002/crat.200310238",

language = "Undefined",

volume = "39",

pages = "675--685",

journal = "Crystal research and technology",

issn = "0232-1300",

publisher = "Wiley",

number = "8",

}

TY - JOUR

T1 - Crystallisation kinetics of ZnS precipitation; an experimental study using the mixed-suspension-mixed-product-removal (MSMPR) method

AU - Al Tarazi, M.Y.M.

AU - Heesink, Albertus B.M.

AU - Azzam, Mohammed O.J.

AU - Yahya, Salah Abu

AU - Versteeg, Geert

PY - 2004

Y1 - 2004

N2 - The precipitation kinetics of zinc sulfide were studied using a lab scale mixed-suspension-mixed-product-removal (MSMPR) precipitation reactor. The vessel was operated at different feed concentrations, molar ratios, stirrer speeds, pH-values, feed injection positions and residence times. Primary nucleation and volume average crystal growth rates as well as agglomeration kernel were determined. Relationships were found between the rates of the different crystallization steps on the one hand and supersaturation, stirrer speeds, pH-values, Zn2+ to S2- ratio, feed positions on the other. These show that larger crystals are obtained at high supersaturation, moderate stirrer speeds, small residence times, a pH-value of around 5 and high Zn2+ to S2- ratios. One should realize though that the applied MSMPR method is not the most optimal technique for examining fast precipitation reactions.

AB - The precipitation kinetics of zinc sulfide were studied using a lab scale mixed-suspension-mixed-product-removal (MSMPR) precipitation reactor. The vessel was operated at different feed concentrations, molar ratios, stirrer speeds, pH-values, feed injection positions and residence times. Primary nucleation and volume average crystal growth rates as well as agglomeration kernel were determined. Relationships were found between the rates of the different crystallization steps on the one hand and supersaturation, stirrer speeds, pH-values, Zn2+ to S2- ratio, feed positions on the other. These show that larger crystals are obtained at high supersaturation, moderate stirrer speeds, small residence times, a pH-value of around 5 and high Zn2+ to S2- ratios. One should realize though that the applied MSMPR method is not the most optimal technique for examining fast precipitation reactions.

KW - zinc sulfide

KW - Nucleation

KW - Growth

KW - Agglomeration

KW - IR-71993

KW - METIS-226512

KW - Precipitation kinetics

U2 - 10.1002/crat.200310238

DO - 10.1002/crat.200310238

M3 - Article

SN - 0232-1300

VL - 39

SP - 675

EP - 685

JO - Crystal research and technology

JF - Crystal research and technology

IS - 8

ER -