Dissolution experiments on dolerite quarry fines at low liquid to solid ratio: a source of calcium for microbial-induced calcite precipitation

Carla C. Casas*, Carl J. Schaschke, Joseph C. Akunna, M. Ehsan Jorat

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Microbial Induced Calcite Precipitation (MICP) is an emerging soil stabilisation technique consisting of the precipitation of the mineral calcite in the soil matrix. Components required for MICP are currently industry end-products. In this paper, calcium release and reusability of calcium-rich silicate quarry fines, dolerite, are investigated in closed (batch reactor) and open (permeability test) systems at L/S ≤ 1.5 for MICP applications. The large specific surface area and reactive surface area accelerated calcium release, achieving calcium concentrations between 10 and 23 mM for different settings. Dissolution in batch reactor resulted in increased silt (<0.006 mm) and clay fractions. XRF analysis indicated no significant depletion of calcium in the dolerite after dissolution. The study shows dolerite quarry fines dissolution in distilled water at low L/S ratios is a rich source of calcium for MICP applications.
Original languageEnglish
JournalEnvironmental Geotechnics
Early online date25 Sep 2019
DOIs
Publication statusE-pub ahead of print - 25 Sep 2019

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Quarries
Calcium Carbonate
Calcite
diabase
quarry
Calcium
Dissolution
calcite
calcium
dissolution
liquid
Liquids
experiment
Experiments
Batch reactors
surface area
soil stabilization
Soils
Silicates
Silt

Cite this

@article{a25ef6b068754541b25c04b1eb8fda6e,
title = "Dissolution experiments on dolerite quarry fines at low liquid to solid ratio: a source of calcium for microbial-induced calcite precipitation",
abstract = "Microbial Induced Calcite Precipitation (MICP) is an emerging soil stabilisation technique consisting of the precipitation of the mineral calcite in the soil matrix. Components required for MICP are currently industry end-products. In this paper, calcium release and reusability of calcium-rich silicate quarry fines, dolerite, are investigated in closed (batch reactor) and open (permeability test) systems at L/S ≤ 1.5 for MICP applications. The large specific surface area and reactive surface area accelerated calcium release, achieving calcium concentrations between 10 and 23 mM for different settings. Dissolution in batch reactor resulted in increased silt (<0.006 mm) and clay fractions. XRF analysis indicated no significant depletion of calcium in the dolerite after dissolution. The study shows dolerite quarry fines dissolution in distilled water at low L/S ratios is a rich source of calcium for MICP applications.",
author = "{C. Casas}, Carla and Schaschke, {Carl J.} and Akunna, {Joseph C.} and Jorat, {M. Ehsan}",
year = "2019",
month = "9",
day = "25",
doi = "10.1680/jenge.19.00067",
language = "English",
journal = "Environmental Geotechnics",
issn = "2051-803X",
publisher = "ICE Publishing Ltd.",

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TY - JOUR

T1 - Dissolution experiments on dolerite quarry fines at low liquid to solid ratio

T2 - a source of calcium for microbial-induced calcite precipitation

AU - C. Casas, Carla

AU - Schaschke, Carl J.

AU - Akunna, Joseph C.

AU - Jorat, M. Ehsan

PY - 2019/9/25

Y1 - 2019/9/25

N2 - Microbial Induced Calcite Precipitation (MICP) is an emerging soil stabilisation technique consisting of the precipitation of the mineral calcite in the soil matrix. Components required for MICP are currently industry end-products. In this paper, calcium release and reusability of calcium-rich silicate quarry fines, dolerite, are investigated in closed (batch reactor) and open (permeability test) systems at L/S ≤ 1.5 for MICP applications. The large specific surface area and reactive surface area accelerated calcium release, achieving calcium concentrations between 10 and 23 mM for different settings. Dissolution in batch reactor resulted in increased silt (<0.006 mm) and clay fractions. XRF analysis indicated no significant depletion of calcium in the dolerite after dissolution. The study shows dolerite quarry fines dissolution in distilled water at low L/S ratios is a rich source of calcium for MICP applications.

AB - Microbial Induced Calcite Precipitation (MICP) is an emerging soil stabilisation technique consisting of the precipitation of the mineral calcite in the soil matrix. Components required for MICP are currently industry end-products. In this paper, calcium release and reusability of calcium-rich silicate quarry fines, dolerite, are investigated in closed (batch reactor) and open (permeability test) systems at L/S ≤ 1.5 for MICP applications. The large specific surface area and reactive surface area accelerated calcium release, achieving calcium concentrations between 10 and 23 mM for different settings. Dissolution in batch reactor resulted in increased silt (<0.006 mm) and clay fractions. XRF analysis indicated no significant depletion of calcium in the dolerite after dissolution. The study shows dolerite quarry fines dissolution in distilled water at low L/S ratios is a rich source of calcium for MICP applications.

U2 - 10.1680/jenge.19.00067

DO - 10.1680/jenge.19.00067

M3 - Article

JO - Environmental Geotechnics

JF - Environmental Geotechnics

SN - 2051-803X

ER -