Page 156 - CW E-Magazine (24-6-2025)

Special Report

8-cyclohexylcyclopropane, and 9-methyl- morphological, thermal, me-
cyclopentane with individual yields of chanical, water resistance, and
35.5, 12.7, and 7.8 wt%, respectively. UV-barrier properties. 5 wt%
(Ind. Eng. Chem. Res., 2024; DOI: TWMCC has shown promis-
10.1021/acs.iecr.4C03341). ing performance in extending
shelf-life for grapes. (ACS
Effect of solvents on furfural Sustainable Chem. Eng., 2024;
(F) liquid-phase hydrogenation DOI: 10.1021/acssuschem.
and catalysts eng.4C00165).
[This column has covered many papers CLPs via self-assemble, recovering the
on the renewal raw material F and Technical, environmental and solvents and spray-drying CLPs. The
related compounds and their valorisation.] safety aspects in Lignosphere capacity of pilot plant was 20 kg with
pilot plant design €2.2 mn fixed capital costs. (Chem. Eng.
J. Zhang et al have referred to mild con- Sci, 2025, 303, 1 Jan, 120948; DOI:
st
ditions in liquid-phase hydrogenation of E. Khalati et al have referred to the 10.1016/j.ces.2024.120948).
F. This paper reviews various solvents – pilot-scale colloidal lignin (L) particles
organic solvent, aqueous phase, super plant, which is a continuous closed-loop Sustainable, scalable, and
critical CO , and ionic liquids – for process. Work at pilot plant is suggested highly flame – retardant
2
the title reaction. Interaction between cellulose containing fabrics
catalysts and solvents are summarised.
This work should lead to promotion of J. Zhao et al have worked on polyester
the title reaction. (AIChE Jl, 2024; DOI: cotton fabrics (PCFs) which combine
10.1002/aic.18709). the advantages of polyester and cotton,
offering durability, moisture absorption,
Sustainable utilisation of and breathability, and this makes them
tea factory waste-derived attractive for workwear, home decor,
microcrystalline cellulose and other applications. In some areas
(TWMCC) as filler material Comparison of the 3D models of the pilot plant flammability is not acceptable. These
for food packaging films authors have developed a two-step
before scale-up, to minimise technical process through Michael addition and
B. Debnath et al have incorporated uncertainties. This work focuses on pre-polymerisation reaction, and this
TWMCC into polymer matrix of poly designing a safe and eco-friendly pilot results in excellent flame-retardant
(vinyl alcohol) (PVA) to improve the pro- plant for optimising production of dried properties. The mechanism is explained.
perties for food packaging; the method colloidal L particles (CLP). First L is dis- Water was used as a solvent. (ACS
of preparing films is reported. The films solved in a ternary solvent mixture and Sustainable Chem. Eng., 2024; DOI:
were characterised to determine chemical, then introduced into water to generate 10.1021/acssuschemeng.4C07749).

Simultaneous extraction
and selective separation
of catechins, caffeine and
theanine from waste tea
residue facilitated by citric
acid (CA)-based deep eutectic
solvent (DES)

Y. Yang et al have prepared novel DES
composed of CA and polypropylene
glycol (PPG) 400 and has shown re-
markable effectiveness in extracting
epigallocatechin gallate (EGCG, 15.58-gm
per kg), epigatechin gallate (ECG,

156 Chemical Weekly June 24, 2025

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