Page 179 - CW E-Magazine (10-12-2024)

Special Report Special Report

title subject. The RD is an example Acetone-butanol-ethanol 6.67 kg per sq.m. per hour and ethanol [MeSO ], and [bmim][NTF ] based on
2
3
of Process Intensifi cation as reaction (ABE) fermentation products permeability of 14.36x10 Barrer and a exploitable differences in energy. The
4
and separation are combined and this recovery separation factor of 7.68. (Chem. Eng. process has been optimised and ASPEN
lowers energy consumption and capex. [This fermentation process was deve- Res. Des., 2024, 206, June 27-42; DOI: simulation software was used. (Chem.
Here, complex interaction between mass loped around the First World War and 10.1016/j.cherd.2024.04.043). Eng. Technol., 2024; DOI: 10.1002/
transfer, chemical reaction and hydrody- the problem of effi cient separation has ceat.202300497).
namics is involved. Many attempts have been discussed in the past as well.] Membranes based
been made to commercialise RD on still separation Techno-economic analysis
greater levels. Aspects of technical feasi- S. Rafi eyan et al have stressed the impor- (TEA) of zero liquid discharge
bility, controllability, economic viability tance of innovative bioprocess engineer- Uio-66 membranes with (ZLD) systems for treatment
and sustainability are discussed. Process ing for effi cient biobutanol fermentation. confi ned naphthalene and utilisation of brine via
modelling and simulation are covered. The separation of ABE accounts for 40% disulphonic acid for selective resource recovery
(J. Chem. Technol. Biotechnol., 2024; of the plant budget. Different separation monovalent ion separation
DOI: 10.1002/jctb.7633). methods like liquid-liquid extraction, A. Panagopoulos and V. Giannika
+
+
membrane perstraction, gas stripping, W. Li et al have worked on separation of Li /Na separation coeffi cient was about shapes, habits, polymorphs, and size have worked on the title subject and
Hybrid process for separation vacuum flash, membrane pervapora- monovalent ions and MOFs are a promi- 35. This may well show prospects in distribution are very important. In this side-by-side analysis of crystallisation
+
of morpholine (M)-water tion and thermo pervaporation, RO, sing candidate due to the angstrom sized the direct Li extraction with a Li fl ux context ASC is very useful and coupling technologies in ZLD systems. Here
-10
mixture adsorption etc. have been considered. windows for size sieving. For further en- of 8.33x10 mol per sq.cm. per sec. (J. with cooling, supercritical-assisted, energy demands vary from 15 to 19 kWh
This review has considered all relevant hancement of monovalent ion selectivity, Membrane Sci., 2024; DOI: 10.1016/j. microfl uidics-assisted and membrane-as- per cu.m. in ZLD systems. Two distinct
N.V. Rane et al have considered the title aspects and challenges and opportuni- 1,5-naphthalene disulfonic acid tetrahy- memsci.2024.122842;703, June, 122843). sisted are relevant. This paper gives a crystallisation approaches were studied:
separation, which is encountered in in- ties are pointed out. (Chem. Eng. Res. drate (NTDS) molecule were incorporated Highly permeable membrane systematic review of this subject. (Chem. membrane promoted crystallisation
dustries. The hybrid process makes use Des., 2024, 205, May, 640-664; DOI: to offer a binding affi nity, generating based on Permax and PEG for Eng. Technol.,2024, 47, Issue 5, 750-763; (MPC) and wind-aided intensifi ed eva-
of liquid-liquid extraction + heteroazeo- 10.1016/j.cherd.2024;04.021). a Uio-66@ NTDS membrane via the DOI: 10.1002/ceat.202300412). poration. The fi rst approach allows higher
tropic distillation + simple distillation. window-cavity structure confi nement. air dehumidifi cation CO removal: Improvement in drinking water recovery at about 96%.
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99% pure M was obtained and 2-ethyl- Facile preparation of thin High monovalent cation permeation H. Liu et al have reported that PEG 600 desorber Both approaches can be useful. Eco-
hexanol was used as a solvent and its and nanodisperse ZIF-8/ rates of 0.3-0.7 mol per sq.m. per hr and can be well dispersed in Permax 232 [This column has covered several pa- nomic data are provided. (Chem. Eng.
recovery is reported. Simulations were PDMDES hybrid membrane mono-/divalent cation selectivities of 73 matrix via hydrogen bonding. The water pers on the subject of CO absorption/ Process-Process Intensifi cation, 2024,
+
+2
+
2+
done and optimisation is reported. Lab for effi cient alcohol recovery for K /Mg , 57 for Na /Mg and 46 for vapour permeance of the composite desorption involving newer amines, dual 200, June, 109773; DOI: 10.1016/j.
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2+
+
results are also reported. (Chem. Eng. via pervaporation (PV) Li /Mg are reported. (J. Membrane Sci., membrane was 6,578 GPU and water solvents which separate, catalysis of cep.2024.109773).
Res. Des.,2024, 205, May, 598-607; 2024, 703, June, 122829; DOI: 10.1016/j. vapour/N selectivity was very high at desorption, etc. and the subject continues
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DOI: 10.1016/j.cherd.2024.03.029). X. Chen et al have made a series of thin mem.sci.2024.122829). 4,909. (J. Membrane Sci., 2024, 704, to attract a lot of attention.] Covalent Organic Framework
and high-fl ux ZIF-8/PDMDES hybrid June, 122849; DOI: 10.1039/j.mems- Membranes (COFM)
Enhancing butanol (B) membranes where ZIF-8 notably en- Flexible Li selective composite ci.2024.122849). M. Li et al have reported a series of
separation effi ciency in hances affi nity of alcohol. The use of membrane for direct Li cost-effective and readily available W.J.S. Siow et al have referred to the
chemical stability and porous crystalline
pervaporation with ZIF-8 ZIF increases fl ux and separation factor. extraction from high Na/Li Crystallisation sepiolite clay-based catalysts activated structure of COFs and they hold promise
porous liquid infused mixed ZIF-8 loading of 6.5 wt% displayed an ratio brine Recent progress in Antisolvent via simple acid treatment. At 88°C it as advanced separation membranes.
matrix membranes (MMMs) outstanding PV performance of recove- [This column has covered some membrane Crystallisation (ASC) of was effective and an increase of 164% However, making them in hollow fi bre
in desorption rate is reported and up to
based separation, involving charged
ring ethanol from a 5 wt% ethanol/
water mixture at 40°C. The total fl ux was membranes, for divalent Mg separation pharmaceuticals with a reduction of 45.6% in heat duty of the form poses challenges. These authors
Separation of B-water mixtures via dis- from Li. It is also important to focus on membrane-based amine solution. The catalyst can be sep- have come out with a new strategy via a
tillation is energy-intensive and hence consider Li/Na separation as technologies arated by fi ltration and was effective in novel vapor/vapor-solid (V/V-S) method
A. Komal et al have come out with a both are monovalent.] [ASC is widely practiced in pharma in- 10 cycles. (Ind. Eng. Chem. Res., 2024; for growing ultrathin crystalline TpPa-
novel approach using MMMs infused dustry and the use of membrane process DOI: 10.1021/acs.iecr.4C00092). 1-COF membranes on the inner lumen
in a Zeolitic Imidazolate Framework-8 L-P. Guo et al have reported (NF) for recovering solvents has been surface of alumina hollow fi bres and
(ZIF-8) transformed into its porous the title membrane where covered in this column.] CO capturing in temperature/ details are given. These membranes have
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liquid (PL) form. These authors have Li La TiO facilitates pressure swing commercial been tested for Organic Solvent Nano-
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0.33
0.56
reported that biobutanol-selective selective pathways for A. Haghighizadeh et al have referred to processes using Ionic Liquids fi ltration (OSNF), e.g., dye rejection of
pervaporation membrane gives good Li transport. Quaternised the attraction of continuous crystallisation (ILs) 700 Da in methanol. Also by adjusting
results. (Chem. Eng. Res. Des., 2024, polymer offers a flexible in the pharma industry, particularly for the COFM thickness between 100-500
206, June, 43-53; DOI: 10.1016/j. framework and prevents large scale API’s. Production of drugs S-U. Rather et al have used three nm these authors have separated the
cherd.2024.04.044). impurity cation leakage. with different solubilities, stabilities, specifi c ILs: [emim][trifl ate], [bmim] model API, Glycyrrhizic acid (GA) from
178 Chemical Weekly December 10, 2024 Chemical Weekly December 10, 2024 179

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