Filtration and compression of organic materials

Publikation: Konferencebidrag uden forlag/tidsskriftKonferenceabstrakt til konferenceForskning

Resumé

The conventional filtration theory has been based on filtrations of incompressible particles such as anatase, kaolin and clay. The filtration models have later been used for organic slurries but can often not explain the observed experimental data. At constant pressure, the filtrate volume does not increase in proportion with square root time when e.g. sewage sludge and manure are filtered. Different explanations have been suggested. However, organic slurries are complex mixtures and it is therefore difficult to evaluate the suggested explanations and develops new models. One possible solution is to use more simple systems. Dextran-MnO2 particles and polystyrene particles with a water-swollen polyacrylic acid shell have therefore been synthesised. These particles have been filtered and used to study the non-linear filtration behaviour. The compressibility of the formed cake has been investigated and the discrepancy between the filtration theory and the observed filtration behaviour explained as a time-dependent collapse of the formed cake (creep). Thus, the creep phenomenon has been adopted in the conventional filtration models and it will be shown that the model can be used to simulate filtration data for complex mixtures e.g. sewage sludge.
OriginalsprogEngelsk
Publikationsdato2008
StatusUdgivet - 2008
BegivenhedNordic Filtration Symposium - København, Danmark
Varighed: 25 aug. 200826 aug. 2008
Konferencens nummer: 11

Konference

KonferenceNordic Filtration Symposium
Nummer11
LandDanmark
ByKøbenhavn
Periode25/08/200826/08/2008

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compression
creep
material
anatase
kaolin
compressibility
manure
shell
clay
particle
acid
water

Citer dette

Christensen, M. L., & Keiding, K. (2008). Filtration and compression of organic materials. Abstract fra Nordic Filtration Symposium, København, Danmark.
Christensen, Morten Lykkegaard ; Keiding, Kristian. / Filtration and compression of organic materials. Abstract fra Nordic Filtration Symposium, København, Danmark.
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title = "Filtration and compression of organic materials",
abstract = "The conventional filtration theory has been based on filtrations of incompressible particles such as anatase, kaolin and clay. The filtration models have later been used for organic slurries but can often not explain the observed experimental data. At constant pressure, the filtrate volume does not increase in proportion with square root time when e.g. sewage sludge and manure are filtered. Different explanations have been suggested. However, organic slurries are complex mixtures and it is therefore difficult to evaluate the suggested explanations and develops new models. One possible solution is to use more simple systems. Dextran-MnO2 particles and polystyrene particles with a water-swollen polyacrylic acid shell have therefore been synthesised. These particles have been filtered and used to study the non-linear filtration behaviour. The compressibility of the formed cake has been investigated and the discrepancy between the filtration theory and the observed filtration behaviour explained as a time-dependent collapse of the formed cake (creep). Thus, the creep phenomenon has been adopted in the conventional filtration models and it will be shown that the model can be used to simulate filtration data for complex mixtures e.g. sewage sludge.",
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Christensen, ML & Keiding, K 2008, 'Filtration and compression of organic materials' Nordic Filtration Symposium, København, Danmark, 25/08/2008 - 26/08/2008, .

Filtration and compression of organic materials. / Christensen, Morten Lykkegaard; Keiding, Kristian.

2008. Abstract fra Nordic Filtration Symposium, København, Danmark.

Publikation: Konferencebidrag uden forlag/tidsskriftKonferenceabstrakt til konferenceForskning

TY - ABST

T1 - Filtration and compression of organic materials

AU - Christensen, Morten Lykkegaard

AU - Keiding, Kristian

PY - 2008

Y1 - 2008

N2 - The conventional filtration theory has been based on filtrations of incompressible particles such as anatase, kaolin and clay. The filtration models have later been used for organic slurries but can often not explain the observed experimental data. At constant pressure, the filtrate volume does not increase in proportion with square root time when e.g. sewage sludge and manure are filtered. Different explanations have been suggested. However, organic slurries are complex mixtures and it is therefore difficult to evaluate the suggested explanations and develops new models. One possible solution is to use more simple systems. Dextran-MnO2 particles and polystyrene particles with a water-swollen polyacrylic acid shell have therefore been synthesised. These particles have been filtered and used to study the non-linear filtration behaviour. The compressibility of the formed cake has been investigated and the discrepancy between the filtration theory and the observed filtration behaviour explained as a time-dependent collapse of the formed cake (creep). Thus, the creep phenomenon has been adopted in the conventional filtration models and it will be shown that the model can be used to simulate filtration data for complex mixtures e.g. sewage sludge.

AB - The conventional filtration theory has been based on filtrations of incompressible particles such as anatase, kaolin and clay. The filtration models have later been used for organic slurries but can often not explain the observed experimental data. At constant pressure, the filtrate volume does not increase in proportion with square root time when e.g. sewage sludge and manure are filtered. Different explanations have been suggested. However, organic slurries are complex mixtures and it is therefore difficult to evaluate the suggested explanations and develops new models. One possible solution is to use more simple systems. Dextran-MnO2 particles and polystyrene particles with a water-swollen polyacrylic acid shell have therefore been synthesised. These particles have been filtered and used to study the non-linear filtration behaviour. The compressibility of the formed cake has been investigated and the discrepancy between the filtration theory and the observed filtration behaviour explained as a time-dependent collapse of the formed cake (creep). Thus, the creep phenomenon has been adopted in the conventional filtration models and it will be shown that the model can be used to simulate filtration data for complex mixtures e.g. sewage sludge.

M3 - Conference abstract for conference

ER -

Christensen ML, Keiding K. Filtration and compression of organic materials. 2008. Abstract fra Nordic Filtration Symposium, København, Danmark.