Influence of physicochemical variables on polymer adsorption in porous media

HPAM type polymers and modifications with ATBS (Acrylamide Tertiary Butyl Sulfonated) units are used for EOR processes. Polymer adsorption is key to the success of these processes and is affected by variables such as molecular weight, hydrolysis, salinity, and permeability of the porous medium. Neve...

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Published in:Dyna (Medellín, Colombia) Colombia), 2022-01, Vol.89 (220), p.9-18
Main Authors: Herrera-Quintero, Julia, Maya-Toro, Gustavo, Colmenares-Vargas, Kelly, Vidal-Prada, Juliana, Barbosa-Trillos, Dalje, Muñoz-Mazo, Eduin
Format: Article
Language:English
Subjects:
Acrylamide
adsorción
Adsorption
ATBS
hidrólisis
HPAM
HPAM
ATBS
adsorción
hidrólisis
permeabilidad
hydrolysis
Membrane permeability
Molecular weight
permeabilidad
Permeability
Polymers
Porous media
Salinity
Salinity effects
Sandstone
Water hardness
Water salinity
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container_end_page 18
container_issue 220
container_start_page 9
container_title Dyna (Medellín, Colombia)
container_volume 89
creator Herrera-Quintero, Julia
Maya-Toro, Gustavo
Colmenares-Vargas, Kelly
Vidal-Prada, Juliana
Barbosa-Trillos, Dalje
Muñoz-Mazo, Eduin
description HPAM type polymers and modifications with ATBS (Acrylamide Tertiary Butyl Sulfonated) units are used for EOR processes. Polymer adsorption is key to the success of these processes and is affected by variables such as molecular weight, hydrolysis, salinity, and permeability of the porous medium. Nevertheless, few studies corelate the dependence of these variables with adsorption. This work presents experimental results of the influence of variables on the dynamic adsorption of different polymers using sandstone type porous media. Modified polymers show adsorption less than 10 μg/g in low permeability and Sor condition. The adsorption of modified HPAM and HPAM polymers has an inverse relationship with molecular weight and permeability. At higher molecular weight, fewer pores are accessed due to their hydrodynamic radius and lower permeability, greater mechanical and hydrodynamic retention. Water salinity and hardness are directly related to adsorption, with less influence for modified HPAM.
doi_str_mv 10.15446/dyna.v89n220.97440
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subjects Acrylamide
adsorción
Adsorption
ATBS
hidrólisis
HPAM
HPAM
ATBS
adsorción
hidrólisis
permeabilidad
hydrolysis
Membrane permeability
Molecular weight
permeabilidad
Permeability
Polymers
Porous media
Salinity
Salinity effects
Sandstone
Water hardness
Water salinity
title Influence of physicochemical variables on polymer adsorption in porous media
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