Page 155 - CW E-Magazine (24-6-2025)

Special Report

A rapid wrap-up of what’s new in Operations,

Processes and Products

Renewable Raw Materials

of enhancing butanol productivity by up
to 50% in the second stage. The overall
sugar consumption of the two-stage
packed-bed reactor with in-line gas strip-
ping was 69%. (J. Chem. Technol. Bio-
technol., 2024; DOI: 10.1002/jctb,7799).

Conversion of sugarcane
lignin (L) into renewable fuel-
range cyclo-alkanes

O.D. Saliu et al have used sugar-based
triflate (mannose triflate) and AlCl and in
3
situ supply of H from propylene glycol to
2

Enzymatic hydrolysis of Provadis Hoschschule, BASF SE, and
residual soybean oil with hte GmbH, to get specially propylene
simultaneous separation using glycol (PG). The pretreatment as well
membranes as the product purification were eva-
luated. The annual requirements of PG,
B.J.S. Pacheco et al have investigated in 2022, was 1.9 mtpa; ethylene glycol
the simultaneous separation process (EG) in 2023 at 28 mtpa and glycerol
using a batch reactor coupled to a cellu- in 2021 at 1 mtpa. This work refers to
lose acetate membrane for the enzymatic getting glycols from the carbohydrate valorise L into renewable fuels. L conver-
hydrolysis of residual soyabean oil. wastes. (Chem. Ing. Technik, 2024; DOI: sion of 98.5% was realised with particle
The lipase was Pichig Pastoris and was 10.1002/cite.202300226). size of 100 µm, and at temperature of
used at 45°C and pH 7 in batches, with 150°C. Lowest amounts of oxygenates
and without simultaneous separation. Enhanced biobutanol and phenolics are formed and the
Encouraging results are reported with production from rice straw highest yield of monocyclic alkanes was
membrane. (Chem.Eng.Technol., 2024; with a two-stage packed-bed 56 wt% corresponding to 79% selectivity.
DOI: 10.1002/ceat.202400097). fermenter coupled with in-line The cycloalkanes are ethylcyclopentane,
gas stripping
Carbohydrate wastes to
chemicals (CTC): From C. Silvestre et al have
second generation sugars to worked on continuous
glycols packed bed reactors
containing clostridium
G. Cusati et al have reported the title beijerinckii DSM 6422
work arising out of collaboration of attached to support.
Air Liquide Engineering & Construc- Nutrient supplementation
tion, Air Liquide Innovation campus, was an effective method Schematic diagram of two-stage PBR configuration with in-line GS

Chemical Weekly June 24, 2025 155

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