Mr. Patrick Sharrock
description
Transcript of Mr. Patrick Sharrock
![Page 1: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/1.jpg)
Mr. Patrick Sharrock
Université de Toulouse, Mines ALBI FRANCE
![Page 2: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/2.jpg)
Nacira Belaicha1, Wahiba Lemlikchi1, Med Oimar Mecherri1, Patrick Sharrock2, Ange Nzihou2
![Page 3: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/3.jpg)
![Page 4: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/4.jpg)
Real permeable barrier construction….
![Page 5: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/5.jpg)
Reactive barrier contents:ZVIZeolites, clays,Organic matterCalcium phosphates?
![Page 6: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/6.jpg)
Chanvre Hemp
![Page 7: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/7.jpg)
• hydroxyapatite, Ca5(PO4)3OH,
• fluoroapatite, Ca5(PO4)3F
photo by Alain Darbellay, GGGems.com.
Stable products of calcium and phosphorous
Phosphate ores comprise animal bone residues
![Page 8: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/8.jpg)
Reaction mechanism HYDROXYAPATITE
(Ca5)(PO4)3OH
CONTAMINANTS Zn2+
(Ca,Zn)5(PO4)3OH
Thermodynamically favorable reactions.
(Ca,Pb)5(PO4)3OHPb5(PO4)3BrZn5(PO4)3FCu5(PO4)3OHCd5(PO4)3OHCa5(AsO4)3OH(UO2)3(PO4)2•8H2O
![Page 9: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/9.jpg)
Outersphere
Innersphere
Mineralsurface layers
Water
Adsorption Co-precipitation Surfaceprecipitation
Mechanisms of Metal Interaction at the Mineral-Water Interface
xZn2+ + Ca10(PO4)6(OH)2 (10-x)Ca2+ + Ca10-xZnx(PO4)6(OH)2
![Page 10: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/10.jpg)
Composites tested:
Plaster + hydroxyapatite (HA or duck bone)
Plaster + hydroxyapatite + fibers
![Page 11: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/11.jpg)
use two parts plaster to one part water
![Page 12: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/12.jpg)
![Page 13: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/13.jpg)
Natural porosity of plaster…
Plaster/water ratio (%) MPa Porosity (%) 130 10 55 150 15 46 180 20 37 220 30 28 250 35 23 300 50 17
![Page 14: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/14.jpg)
![Page 15: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/15.jpg)
Experimental set-up for testing porous plaster filter
![Page 16: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/16.jpg)
Flow vs time
0
20
40
60
80
100
120
0 100 200 300 400 500
T, sec
V, m
L
Flow vs Time
0
20
40
60
80
100
120
0 500 1000 1500 2000 2500 3000
T, sec
V, m
L
1% fibers
2% fibers
![Page 17: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/17.jpg)
Mechanical strength of synthetic Ha
![Page 18: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/18.jpg)
Mechanical strength of duck bone calcinated Ha
![Page 19: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/19.jpg)
Tensile strength decreases when bone HA increases
![Page 20: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/20.jpg)
Tensile strength decreases as porous bone HA increases
![Page 21: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/21.jpg)
![Page 22: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/22.jpg)
![Page 23: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/23.jpg)
![Page 24: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/24.jpg)
![Page 25: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/25.jpg)
Plaster-HA composite retains zinc ions
![Page 26: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/26.jpg)
Composite with more HA retains more zinc
![Page 27: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/27.jpg)
Amount of zinc removed decreases with increase in flow rate
![Page 28: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/28.jpg)
![Page 29: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/29.jpg)
![Page 30: Mr. Patrick Sharrock](https://reader035.fdocuments.in/reader035/viewer/2022081512/568162d9550346895dd35ee3/html5/thumbnails/30.jpg)
Composite material can retain heavy metals and avoid dispersion of fine metal phosphates