Production of carboxylic acids from the non-lignin residue of black liquor by hydrothermal treatments
-
Add time:07/26/2019 Source:sciencedirect.com
The present study assesses, for the first time, the use of the non-lignin residue from Kraft black liquor as a renewable source of carboxylic acids. For this purpose, the liquid fraction obtained after separating the lignin from the black liquor by acid precipitation was subjected to different hydrothermal treatments. It was found that the formation of carboxylic acids can be maximized at 190 °C, 70 bar and under an inert atmosphere, with concentrations after 2 h of 29.0 g/l of oxalic acid, 1.8 g/L of malic acid, 10.0 g/L of lactic acid, 4.1 g/L of formic acid, 11.8 g/L of acetic acid and 3.4 g/L of propionic acid. The presence of an oxidizing atmosphere generated a less concentrated, but more purified, stream of acids than that obtained by thermal hydrolysis, simplifying the subsequent downstream processing.
We also recommend Trading Suppliers and Manufacturers of Acid Black 1 (cas 1064-48-8). Pls Click Website Link as below: cas 1064-48-8 suppliers
Prev:Synthesis and application of Fe-N-Cr-TiO2 nanocatalyst for photocatalytic degradation of Acid Black 1 (cas 1064-48-8) under LED light irradiation
Next:A comparison of visible wavelength reflectance hyperspectral imaging and Acid Black 1 (cas 1064-48-8) for the detection and identification of blood stained fingerprints) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- Ag2S–ZnO – An efficient photocatalyst for the mineralization of Acid Black 1 (cas 1064-48-8) with UV light07/29/2019
- Photoelectrocatalytic decomposition of Acid Black 1 (cas 1064-48-8) dye using TiO2 nanotubes07/28/2019
- A comparison of visible wavelength reflectance hyperspectral imaging and Acid Black 1 (cas 1064-48-8) for the detection and identification of blood stained fingerprints07/27/2019
- Synthesis and application of Fe-N-Cr-TiO2 nanocatalyst for photocatalytic degradation of Acid Black 1 (cas 1064-48-8) under LED light irradiation07/25/2019
- Green synthesis of aluminum-based metal organic framework for the removal of azo dye Acid Black 1 (cas 1064-48-8) from aqueous media07/24/2019
-
Health and Chemical more >