Solute washout experiments for characterizing mass transport in hollow fiber immunoisolation membranes

Russell F. Boyd, Mildred López, Connie L. Stephens, Gregorio M. Vélez, Carlos A. Ramírez, Andrew Zydney

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The transport characteristics of immunoisolation membranes can have a critical effect on the design of hybrid artificial organs and cell therapies. However, it has been difficult to quantitatively evaluate the desired transport properties of different hollow fiber membranes due to bulk mass transfer limitations in the fiber lumen and annular space. An attractive alternative to existing methodologies is to use the rate of solute removal or "washout" from the annular space during constant flow perfusion through the fiber lumen. Experimental washout curves were obtained for glucose and a 10 kD dextran in two different hollow fiber devices. Data were analyzed using a theoretical model which accounts for convective and diffusive transport in the lumen, membrane, and annular space. The model was in good agreement with the experimental results and provided an accurate measure of the effective membrane diffusion coefficient for both small and large solutes. This approach should prove useful in theoretical analyses of solute transport and performance of hollow fiber artificial organs.

Original languageEnglish (US)
Pages (from-to)618-626
Number of pages9
JournalAnnals of Biomedical Engineering
Volume26
Issue number4
DOIs
StatePublished - Jan 1 1998

Fingerprint

Mass transfer
Membranes
Fibers
Artificial organs
Experiments
Solute transport
Dextran
Transport properties
Glucose

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering

Cite this

Boyd, Russell F. ; López, Mildred ; Stephens, Connie L. ; Vélez, Gregorio M. ; Ramírez, Carlos A. ; Zydney, Andrew. / Solute washout experiments for characterizing mass transport in hollow fiber immunoisolation membranes. In: Annals of Biomedical Engineering. 1998 ; Vol. 26, No. 4. pp. 618-626.
@article{f89f7d4db2f2430aabea855fde35474b,
title = "Solute washout experiments for characterizing mass transport in hollow fiber immunoisolation membranes",
abstract = "The transport characteristics of immunoisolation membranes can have a critical effect on the design of hybrid artificial organs and cell therapies. However, it has been difficult to quantitatively evaluate the desired transport properties of different hollow fiber membranes due to bulk mass transfer limitations in the fiber lumen and annular space. An attractive alternative to existing methodologies is to use the rate of solute removal or {"}washout{"} from the annular space during constant flow perfusion through the fiber lumen. Experimental washout curves were obtained for glucose and a 10 kD dextran in two different hollow fiber devices. Data were analyzed using a theoretical model which accounts for convective and diffusive transport in the lumen, membrane, and annular space. The model was in good agreement with the experimental results and provided an accurate measure of the effective membrane diffusion coefficient for both small and large solutes. This approach should prove useful in theoretical analyses of solute transport and performance of hollow fiber artificial organs.",
author = "Boyd, {Russell F.} and Mildred L{\'o}pez and Stephens, {Connie L.} and V{\'e}lez, {Gregorio M.} and Ram{\'i}rez, {Carlos A.} and Andrew Zydney",
year = "1998",
month = "1",
day = "1",
doi = "10.1114/1.102",
language = "English (US)",
volume = "26",
pages = "618--626",
journal = "Annals of Biomedical Engineering",
issn = "0090-6964",
publisher = "Springer Netherlands",
number = "4",

}

Solute washout experiments for characterizing mass transport in hollow fiber immunoisolation membranes. / Boyd, Russell F.; López, Mildred; Stephens, Connie L.; Vélez, Gregorio M.; Ramírez, Carlos A.; Zydney, Andrew.

In: Annals of Biomedical Engineering, Vol. 26, No. 4, 01.01.1998, p. 618-626.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Solute washout experiments for characterizing mass transport in hollow fiber immunoisolation membranes

AU - Boyd, Russell F.

AU - López, Mildred

AU - Stephens, Connie L.

AU - Vélez, Gregorio M.

AU - Ramírez, Carlos A.

AU - Zydney, Andrew

PY - 1998/1/1

Y1 - 1998/1/1

N2 - The transport characteristics of immunoisolation membranes can have a critical effect on the design of hybrid artificial organs and cell therapies. However, it has been difficult to quantitatively evaluate the desired transport properties of different hollow fiber membranes due to bulk mass transfer limitations in the fiber lumen and annular space. An attractive alternative to existing methodologies is to use the rate of solute removal or "washout" from the annular space during constant flow perfusion through the fiber lumen. Experimental washout curves were obtained for glucose and a 10 kD dextran in two different hollow fiber devices. Data were analyzed using a theoretical model which accounts for convective and diffusive transport in the lumen, membrane, and annular space. The model was in good agreement with the experimental results and provided an accurate measure of the effective membrane diffusion coefficient for both small and large solutes. This approach should prove useful in theoretical analyses of solute transport and performance of hollow fiber artificial organs.

AB - The transport characteristics of immunoisolation membranes can have a critical effect on the design of hybrid artificial organs and cell therapies. However, it has been difficult to quantitatively evaluate the desired transport properties of different hollow fiber membranes due to bulk mass transfer limitations in the fiber lumen and annular space. An attractive alternative to existing methodologies is to use the rate of solute removal or "washout" from the annular space during constant flow perfusion through the fiber lumen. Experimental washout curves were obtained for glucose and a 10 kD dextran in two different hollow fiber devices. Data were analyzed using a theoretical model which accounts for convective and diffusive transport in the lumen, membrane, and annular space. The model was in good agreement with the experimental results and provided an accurate measure of the effective membrane diffusion coefficient for both small and large solutes. This approach should prove useful in theoretical analyses of solute transport and performance of hollow fiber artificial organs.

UR - http://www.scopus.com/inward/record.url?scp=0032110569&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032110569&partnerID=8YFLogxK

U2 - 10.1114/1.102

DO - 10.1114/1.102

M3 - Article

C2 - 9662154

AN - SCOPUS:0032110569

VL - 26

SP - 618

EP - 626

JO - Annals of Biomedical Engineering

JF - Annals of Biomedical Engineering

SN - 0090-6964

IS - 4

ER -