Page 169 - CW E-Magazine (26-3-2024)

Special Report

Energy consumption is an important by 83% after side-chain epoxidation. upon heating and cooling, respectively.
factor. Wood, straw, bagasse, wastes, (Ind. Eng. Chem. Res., 2023; DOI: This is amenable to circular materials
etc., are covered with different solvents 10.1021/acs.iecr.3C03583). bioeconomy. (ACS Sustainable Chem.
to give biogas, bioethanol, (nano) Eng., 2023; DOI: 10.1021/acssusche-
cellulose, glucose, furans, etc. (Green Ligno Switch : A robust yet meng.3C04477).
Chem., 2023; DOI: 10.1039/D3G- reversible bioaromatic super-
C03274D). glue for enhanced materials Liquid-liquid extraction of
circularity and ecodesign sinapic acid (SA) from a mustard
Tailored acid carrier acidity seed by-product using a
for the controlled C=C peracid M. Thys et al have come out with a stra- hollow fi bre membrane contac-
epoxidation of Cardanol (C)- tegy to make superglues from renewable tor (HFMC)
based materials with different sources, rather than fossil sources. This
polarities glue is over 90% bio-based, non-toxic, V. Reungoat et al have used an aqueous
easy to apply, and can rapidly and re- feed obtained through the hydrolysis of
Z. Yang et al have worked on the title peatedly switch on-demand between mustard bran, which contains about 230
subject, which includes C glycidyl ether a strongly adhesive solid state and a mg per liter of SA, with a natural pH of 4.
(CGE), Cardanol (C), Cardol, and C non-adhesive liquid state. This super- Different solvents gave an extraction
Polyoxyethylene ether ammonium sul- glue integrates lignin and fatty acids, effi ciency exceeding 80% for pH less
phate, and have tailored the acidities of connected via thermo-reversible Diels than 5. MIBK and CPME were found
the acid carriers, like formic acid, acetic Alder bonds that dissociate and associate to be good solvents. (Sepn. Purfn. Tech-
acid, and nonanoic acid. The epoxidised nol., 2024, 331, 1 March, 125615; DOI:
products have been fully characterised. 10.1016/j.seppur.2023.125615).
The extent of the ring opening is closely
related to the acidity reaction tempera- Continuous design and techno-
ture and reaction time and this can be economic assessment of
controlled by tailoring the acidity of the biorefi nery process for heparin
acid carrier. The mechanical strength of sulphate (HS) extraction from
the composites using CGE was improved Nodipecten nodosus Viscero
waste (MNV)

HS is of critical importance for prevent-
ing blood clotting. C.M.B. Bostos et al
have discussed the title subject, based
on pilot plant information. HS is also of
importance for wound healing, growth
factor regulation and topical formu-
lations for skin damage. Process modelling,
simulation, and cost evaluation were
performed taking capacities from 6 to
192 tpa. Competition with low molecular
weight H has been discussed. Higher
capacity plants are economic. (Chem.
Eng. Jl., 2023, 477, 1 Dec., 146617;
DOI: 10.1016/j.cej.2023.146617).

Lignin (L) beyond the status quo

M. Fazeli et al have referred to the
remarkable origin and structure of L
that explains its capacity to bind other

Chemical Weekly March 26, 2024 169

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