Esters production via carboxylates from anaerobic paper mill wastewater treatment

Carlos I. Cabrera-Rodríguez; Mónica Moreno-González; Florence A. de Weerd; Vidhvath Viswanathan; Luuk A.M. van der Wielen; Adrie J.J. Straathof

doi:10.1016/j.biortech.2017.02.030

Esters production via carboxylates from anaerobic paper mill wastewater treatment

Carlos I. Cabrera-Rodríguez, Mónica Moreno-González, Florence A. de Weerd, Vidhvath Viswanathan, Luuk A.M. van der Wielen, Adrie J.J. Straathof

Delft University of Technology

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

Abstract

This paper describes a new option for integrated recovery and esterification of carboxylates produced by anaerobic digestion at a pH above the pK_a. The carboxylates (acetate, propionate, butyrate, valerate and lactate) are recovered using a strong anion exchange resin in the bicarbonate form, and the resin is regenerated using a CO₂-expanded alcohol technique, which allows for low chemicals consumption and direct esterification. Paper mill wastewater was used to study the effect of pH and the presence of other inorganic anions and cations on the adsorption and desorption with CO₂-expanded methanol. Calcium, which is present in paper mill wastewater, can cause precipitation problems, especially at high pH. Esters yields ranged from 1.08 ± 0.04 mol methyl acetate/mol of acetate_in to 0.57 ± 0.02 mol methyl valerate/mol of valerate_in.

Original language	English
Pages (from-to)	186-192
Number of pages	7
Journal	Bioresource Technology
Volume	237
DOIs	https://doi.org/10.1016/j.biortech.2017.02.030
Publication status	Published - 2017
Externally published	Yes

Keywords

Anaerobic wastewater treatment
CO-expanded methanol
Methyl carboxylates
Paper mill
Volatile fatty acids

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2017.02.030

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title = "Esters production via carboxylates from anaerobic paper mill wastewater treatment",

abstract = "This paper describes a new option for integrated recovery and esterification of carboxylates produced by anaerobic digestion at a pH above the pKa. The carboxylates (acetate, propionate, butyrate, valerate and lactate) are recovered using a strong anion exchange resin in the bicarbonate form, and the resin is regenerated using a CO2-expanded alcohol technique, which allows for low chemicals consumption and direct esterification. Paper mill wastewater was used to study the effect of pH and the presence of other inorganic anions and cations on the adsorption and desorption with CO2-expanded methanol. Calcium, which is present in paper mill wastewater, can cause precipitation problems, especially at high pH. Esters yields ranged from 1.08 ± 0.04 mol methyl acetate/mol of acetatein to 0.57 ± 0.02 mol methyl valerate/mol of valeratein.",

keywords = "Anaerobic wastewater treatment, CO-expanded methanol, Methyl carboxylates, Paper mill, Volatile fatty acids",

author = "Cabrera-Rodr{\'i}guez, {Carlos I.} and M{\'o}nica Moreno-Gonz{\'a}lez and {de Weerd}, {Florence A.} and Vidhvath Viswanathan and {van der Wielen}, {Luuk A.M.} and Straathof, {Adrie J.J.}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

doi = "10.1016/j.biortech.2017.02.030",

language = "English",

volume = "237",

pages = "186--192",

journal = "Bioresource Technology",

issn = "0960-8524",

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TY - JOUR

T1 - Esters production via carboxylates from anaerobic paper mill wastewater treatment

AU - Cabrera-Rodríguez, Carlos I.

AU - Moreno-González, Mónica

AU - de Weerd, Florence A.

AU - Viswanathan, Vidhvath

AU - van der Wielen, Luuk A.M.

AU - Straathof, Adrie J.J.

PY - 2017

Y1 - 2017

N2 - This paper describes a new option for integrated recovery and esterification of carboxylates produced by anaerobic digestion at a pH above the pKa. The carboxylates (acetate, propionate, butyrate, valerate and lactate) are recovered using a strong anion exchange resin in the bicarbonate form, and the resin is regenerated using a CO2-expanded alcohol technique, which allows for low chemicals consumption and direct esterification. Paper mill wastewater was used to study the effect of pH and the presence of other inorganic anions and cations on the adsorption and desorption with CO2-expanded methanol. Calcium, which is present in paper mill wastewater, can cause precipitation problems, especially at high pH. Esters yields ranged from 1.08 ± 0.04 mol methyl acetate/mol of acetatein to 0.57 ± 0.02 mol methyl valerate/mol of valeratein.

AB - This paper describes a new option for integrated recovery and esterification of carboxylates produced by anaerobic digestion at a pH above the pKa. The carboxylates (acetate, propionate, butyrate, valerate and lactate) are recovered using a strong anion exchange resin in the bicarbonate form, and the resin is regenerated using a CO2-expanded alcohol technique, which allows for low chemicals consumption and direct esterification. Paper mill wastewater was used to study the effect of pH and the presence of other inorganic anions and cations on the adsorption and desorption with CO2-expanded methanol. Calcium, which is present in paper mill wastewater, can cause precipitation problems, especially at high pH. Esters yields ranged from 1.08 ± 0.04 mol methyl acetate/mol of acetatein to 0.57 ± 0.02 mol methyl valerate/mol of valeratein.

KW - Anaerobic wastewater treatment

KW - CO-expanded methanol

KW - Methyl carboxylates

KW - Paper mill

KW - Volatile fatty acids

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U2 - 10.1016/j.biortech.2017.02.030

DO - 10.1016/j.biortech.2017.02.030

M3 - Article

C2 - 28222952

AN - SCOPUS:85013214994

SN - 0960-8524

VL - 237

SP - 186

EP - 192

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Esters production via carboxylates from anaerobic paper mill wastewater treatment

Abstract

Keywords

UN SDGs

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