Page 171 - CW E-Magazine (27-8-2024)

Special Report Special Report

Ligand-engineered Zr- enantiomeric excess of 26% is reported.
MOF membranes with fast By adopting fi ve-stage counter-current
water transport channels for extraction and reverse extraction the ee
alcohol-water solution value could be improved to 91%. Mole-
cular simulations were done. (AIChE Jl.,
B. Mo et al have reported that MOF 2024; DOI: 10.1002/aic.18367).
membranes with rich functionality and
a tuneable pore system are promising for Absorption of methyl
molecular separation. Aperture size can mercaptan (MM)
be manipulated to allow fast and selec-
tive permeation of water over alcohol P. Liang et al have screened physical sol-
molecules. Thus butanol/water separa- vents using quantum chemical calcula-
tion was performed with total fl ux of tions coupled with experiments. DMSO,
5,226-gm m hr and separation factor Sulfolane (SLL), propylene carbonate with polymer RO membranes. RO mem- acid works for Sn with high selectivity.
-1
-2
-1
of 1,281, and water content of 99.3% in (PC), DMF and NMP were considered branes having assumed hypothetical per- Thus FA-ChCl extracted Cu and Fe at
the permeate. (AIChE Jl., 2024; DOI: using the COSMO-RS model. The order meance values for ethanol 0.1 time and 100°C. Oxalic acid (1M) removed Sn
heat and pressure, particularly for pharma are different from commercial-scale dis- 10.1002/aic.18368). was NMP> PC> DMSO> SLL> DMF. water of 2 times proved to be feasible at 80°C. (ChemSusChem, 2024; DOI:
applications. This is based on forward-os- tillation. Column internals and column The treatment of sour natural gas which to realise lower energy consumption. 10.1002/cssc.202301418).
mosis system, which uses a hollow fi bre sizing software are discussed. Pumps, Experimental and contains H S, COS, CH SH is discussed. (J. Chem. Eng. Japan, 2024, 57, Issue1;
2
3
membrane module and a draw solution. flowmeters, control valves, types of computational studies on (ACS Omega, 2023; DOI: 10.1021/ DOI: 10.1080/00219592.2023.2294934).
Thus water is removed without the loss trays and packing are different in pilot isolation of cardanol from acsomega.2C06173). Thermally self-suffi cient heat
of APIs. Highly soluble liquids like THF, facilities. Appropriate sample points Green Deep Eutectic Solvents pump-assisted azeotropic
toluene or methanol can bring down water or overline analyses capabilities and Cashew Nut Shell Liquid Analysis of RO separation (DESs) for sustainable dividing-wall column (DWC)
content below 1,000-ppm without apply- instrumentation have to be provided. (CNSL) using diethanolamine performance of ethanol (E) for biofuels recovery from
ing heat or pressure. A variety of solvents Flexibility has to be provided. Aspects (DEA) based deep eutectic water mixtures and design recovery from thermally isopropanol-butanol-ethanol
can be handled. (Chem. Eng. Magazine, of high-vacuum operation, heat con- solvent at different molar of ethanol concentration treated PCBs: A greener (IBE) fermentation
2024, Feb.). trol, refl ux control, distillate and side ratios processes alternative to conventional
stream product are discussed. Glass methods T. Jankovic et al (Prof. A.A. Kiss and
Innovations in pilot-plant Oldershaw-style trays are commonly V. Malaiyarasan et al have amine-based coworkers) have reported that IBE
distillation process design used; “off-the-shelf” components in Deep Eutectic mixture composed of Ethanol production via fermentation S. Mishra et al have worked on the fermentation is superior to acetone-
the range of dia from 28 to 100 mm are choline chloride with DEA-based hydro- has witnessed meteoric rise and here the waste PCBs, the core of e-waste, which butanol-ethanol (ABE) due to better pro-
G. Graham and R. Rocks, AVP Corp., referred; scale-up is facilitated by pilot gen bond donor in different mole ratios. concentration of E rarely crosses 12% are rich in Cu, Sn, Zn, Fe, and Ni, to perties. A novel thermally self-suffi cient
have reported specific concerns in facilities. (Chem. Eng. Magazine, 2024, Ethyl acetate and MIBK could be used and energy consumption constitutes an recover these valuable metals. PCBs and eco-effi cient downstream process
small-scale distillation processes which Feb. issue). as co-solvents. Temperature was varied important factor in making azeotropic from mobile phones were treated with is reported for a 74,000-tpa capacity
from 20°C to 70°C at 1 atm. Thermal mixture and absolute. E.K. Akamatsu Choline Chloride based DESs. Formic from a highly dilute broth having over
et al have successfully analysed the acid (FA)-ChCl had maximum solubility
stability of the solvent was checked. RO separation performances of E/water of Cu, Fe, and Ni, while urea-ChCl had 97 wt% water. Gas stripping and heat
Cardanol extraction details are given. (J. mixtures, with E conc. from 1-37 wt%, high Zn selectivity and solubility. Oxalic pump-assisted vacuum evaporation was
Chem. Technol. Biotechnol., 2024; DOI: implemented for the products from the
10.1002/jctb.7612). broth. An advanced highly integrated
heat-pump assisted azeotropic DWC
Enhancement of separation was designed to give high purity (99%
performance for ofl oxacin (O) wt) butanol and isopropanol-ethanol
enantiomers by a biphasic fuel supplement (89 wt%). It is cost
recognition chiral extraction effective at $0.130/kg IBE and energy
(BRCE) system consumption of 0.673 KWeh/kg IBE.
Full recycle of biomass and most
J. Li et al have worked on separation of of the separated water is reported.
enantiomers via BRCE. The case study (Chem. Eng. Processing – Process
of O was taken using beta-cyclodextrin Intensification, 2024,197, March,
as hydrophobic and hydrophilic selec- 109689; DOI:10.1016/j.cep.2024.
tors. Enantioselectivity value of 2.4 and 109689).

170 Chemical Weekly August 27, 2024 Chemical Weekly August 27, 2024 171

Contents Index to Advertisers Index to Products Advertised