Recovery of acetate by anion exchange with consecutive CO2-expanded methanol desorption: A model-based approach

Carlos I. Cabrera-Rodríguez; Carlos M. Cartin-Caballero; Evgenia Platarou; Florence A. de Weerd; Luuk A.M. van der Wielen; Adrie J.J. Straathof

doi:10.1016/j.seppur.2018.03.068

Recovery of acetate by anion exchange with consecutive CO₂-expanded methanol desorption: A model-based approach

Carlos I. Cabrera-Rodríguez
, Carlos M. Cartin-Caballero
, Evgenia Platarou
, Florence A. de Weerd
, Luuk A.M. van der Wielen
, Adrie J.J. Straathof

Department of Chemical Sciences

Delft University of Technology
National University of Costa Rica

Research output: Contribution to journal › Article › peer-review

Abstract

Production of bio-based acetate is commonly hindered by the high costs of the downstream processing. In this paper, a model is developed to describe a new method that recovers acetate salts using anion exchange resins, and subsequently desorbs and upgrades them using CO₂-expanded alcohol. The model consists of equilibrium parameters for both the adsorption and desorption step. The calculated parameters are: for the adsorption K_Cl^- ^{Ac^-}=0.125, K_Cl^- ^{HCO₃ ^-}=0.206 and K_OV,HAc=0.674[Formula presented], and for the desorption pK_{MeCO₃ ^-} ^{Ac^-}=3.71. The maximum experimental concentration of acetic acid obtained in CO₂-expanded methanol is 0.427 mol/kg (20 g/L_MeOH) at an operating pressure of 31 bar. The model represents the expected trends for all species, and can be used to design a multicolumn system for the recovery and upgrading of carboxylates.

Original language	English
Pages (from-to)	56-65
Number of pages	10
Journal	Separation and Purification Technology
Volume	203
DOIs	https://doi.org/10.1016/j.seppur.2018.03.068
Publication status	Published - 12 Sep 2018

Keywords

Acetate
Anion exchange
CO-expanded methanol
Desorption
Ion exchange modeling

Access to Document

10.1016/j.seppur.2018.03.068

Cite this

@article{fc4c5aa58fc648b6b9825c7fc638d2c3,

title = "Recovery of acetate by anion exchange with consecutive CO2-expanded methanol desorption: A model-based approach",

abstract = "Production of bio-based acetate is commonly hindered by the high costs of the downstream processing. In this paper, a model is developed to describe a new method that recovers acetate salts using anion exchange resins, and subsequently desorbs and upgrades them using CO2-expanded alcohol. The model consists of equilibrium parameters for both the adsorption and desorption step. The calculated parameters are: for the adsorption KCl- Ac- =0.125, KCl- HCO3 - =0.206 and KOV,HAc=0.674[Formula presented], and for the desorption pKMeCO3 - Ac- =3.71. The maximum experimental concentration of acetic acid obtained in CO2-expanded methanol is 0.427 mol/kg (20 g/LMeOH) at an operating pressure of 31 bar. The model represents the expected trends for all species, and can be used to design a multicolumn system for the recovery and upgrading of carboxylates.",

keywords = "Acetate, Anion exchange, CO-expanded methanol, Desorption, Ion exchange modeling",

author = "Cabrera-Rodr{\'i}guez, \{Carlos I.\} and Cartin-Caballero, \{Carlos M.\} and Evgenia Platarou and \{de Weerd\}, \{Florence A.\} and \{van der Wielen\}, \{Luuk A.M.\} and Straathof, \{Adrie J.J.\}",

note = "Publisher Copyright: {\textcopyright} 2018 The Authors",

year = "2018",

month = sep,

day = "12",

doi = "10.1016/j.seppur.2018.03.068",

language = "English",

volume = "203",

pages = "56--65",

journal = "Separation and Purification Technology",

issn = "1383-5866",

}

TY - JOUR

T1 - Recovery of acetate by anion exchange with consecutive CO2-expanded methanol desorption

T2 - A model-based approach

AU - Cabrera-Rodríguez, Carlos I.

AU - Cartin-Caballero, Carlos M.

AU - Platarou, Evgenia

AU - de Weerd, Florence A.

AU - van der Wielen, Luuk A.M.

AU - Straathof, Adrie J.J.

PY - 2018/9/12

Y1 - 2018/9/12

N2 - Production of bio-based acetate is commonly hindered by the high costs of the downstream processing. In this paper, a model is developed to describe a new method that recovers acetate salts using anion exchange resins, and subsequently desorbs and upgrades them using CO2-expanded alcohol. The model consists of equilibrium parameters for both the adsorption and desorption step. The calculated parameters are: for the adsorption KCl- Ac- =0.125, KCl- HCO3 - =0.206 and KOV,HAc=0.674[Formula presented], and for the desorption pKMeCO3 - Ac- =3.71. The maximum experimental concentration of acetic acid obtained in CO2-expanded methanol is 0.427 mol/kg (20 g/LMeOH) at an operating pressure of 31 bar. The model represents the expected trends for all species, and can be used to design a multicolumn system for the recovery and upgrading of carboxylates.

AB - Production of bio-based acetate is commonly hindered by the high costs of the downstream processing. In this paper, a model is developed to describe a new method that recovers acetate salts using anion exchange resins, and subsequently desorbs and upgrades them using CO2-expanded alcohol. The model consists of equilibrium parameters for both the adsorption and desorption step. The calculated parameters are: for the adsorption KCl- Ac- =0.125, KCl- HCO3 - =0.206 and KOV,HAc=0.674[Formula presented], and for the desorption pKMeCO3 - Ac- =3.71. The maximum experimental concentration of acetic acid obtained in CO2-expanded methanol is 0.427 mol/kg (20 g/LMeOH) at an operating pressure of 31 bar. The model represents the expected trends for all species, and can be used to design a multicolumn system for the recovery and upgrading of carboxylates.

KW - Acetate

KW - Anion exchange

KW - CO-expanded methanol

KW - Desorption

KW - Ion exchange modeling

UR - https://www.scopus.com/pages/publications/85045458977

U2 - 10.1016/j.seppur.2018.03.068

DO - 10.1016/j.seppur.2018.03.068

M3 - Article

AN - SCOPUS:85045458977

SN - 1383-5866

VL - 203

SP - 56

EP - 65

JO - Separation and Purification Technology

JF - Separation and Purification Technology

ER -

Recovery of acetate by anion exchange with consecutive CO₂-expanded methanol desorption: A model-based approach

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this