Green chemicals from pulp production black liquor by partial wet oxidation

Raja Hassan, Kristian Melin, Daniela Del Carmen Villalba de Kokkonen, Gerard Viader Riera, Golam Sarwar, Jukka Koskinen

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

7 Sitaatiot (Scopus)

Abstrakti

To reduce greenhouse gas emissions, more sustainable sources of energy, fuel and chemicals are needed. Biomass side streams such as black liquor, which is a by-product of pulp production, has the potential to be used for this purpose. The aim of the study was the production of carboxylic acids, such as lactic acid, formic acid and acetic acid, from kraft and non-wood black liquor. The processes studied were partial wet oxidation (PWO) and catalytic partial wet oxidation (CPWO). The results show that the yield of carboxylic acid is higher when treated by PWO than the results from CPWO at temperatures of 170 degrees C and 230 degrees C. The results shows that the PWO process can increase the yield of carboxylic acids and hydroxy acids in black liquor, reduce lignin content and decrease pH, which makes further separation of the acids more favourable. The hydroxy acids are valuable raw materials for biopolymers, and acetic acid and formic acid are commonly used chemicals conventionally produced from fossil feedstock.

AlkuperäiskieliEnglanti
Sivut1015-1021
Sivumäärä7
JulkaisuWaste management and Research
Vuosikerta33
Numero11
DOI - pysyväislinkit
TilaJulkaistu - marraskuuta 2015
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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    Hassan, R., Melin, K., Del Carmen Villalba de Kokkonen, D., Riera, G. V., Sarwar, G., & Koskinen, J. (2015). Green chemicals from pulp production black liquor by partial wet oxidation. Waste management and Research, 33(11), 1015-1021. https://doi.org/10.1177/0734242X15602807