Page 173 - CW E-Magazine (25-6-2024)

Special Report Special Report

the size and shape of the agglomerates. metallic ILs, multiple ILs, polyionic adsorption capacity increased from 54 rer and selectivity was about 20 under 4 Porous materials with suitable
Drug release profiles were measured. ILs, and IL-supported materials; DES to 80% for wet and dry products, res- bar and temp. of 30 C. [ACS Omega, pore size and dual-functional
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(Chem. Eng. Technol.; DOI: 10.1002/ materials included common DESs, pectively. High desorption rates close 2023, DOI:10.102/acsomega.3C04800]. sites for benchmark one-step
ceat.202300138). hydroxy-functionaloised DESs, protic to 90% is reported and was stable. (Ind. ethylene purifi cation
DESs, multiple-site DESs, metallic Eng. Chem. Res. 2023; DOI: 10.1021/ Unraveling the potential of
Chiral purifi cation of DESs, and DES-supported materials. acs.iecr.3C03226). electrochemical pH-swing T. Wu et al have reported one-step purifi -
S-methyl-2-chloropropionate The absorption characteristics were (EPS) processes for CO cation of C H /C H /C H /CO mixtures
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(SMCP) from enantio- collated. Future directions are given. Separation of propane and capture and utilization 2 using a molecular trap within Zn-trz
mixtures by three-phase (New J. Chem., 2023; DOI: 10.1039/ propylene by urea clathrate ox (trz=1,2,4-triazole; ox=oxalic acid)
crystallisation (TPC) weight, transparent, and large LDPE fi lm D3NJ.04455F). formation T. N-D. Cao et al have worked on the which feature positive H and negative O
served as the “jellyfi sh“ umbrella and Construction of microporous [This column has covered many papers title problem due to the much needed sites and the suitable pore size. The C H
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L-D. Shiau and M-H. Hsu have applied ultra-soft poly(glycidyl methacrylate)/ on separation of propane/propylene as separation technologies for CO capture selectivity was high to give over 99.95%
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TPC to produce SMCP from enantio- poly(lysine) molecular chain functioned covalent organic frameworks the conventional high pressure cryo- and then its utilization. Many strategies with record productivity of 1.5 mole per
mer mixtures with various initial con- as the “tentacle;” details of preparation (COFs) for high gas uptake genic process is capital and energy have bean considered and this column kg. [A.I.Ch.E.Jl., 2023, DOI:10.1002/
centration. Here TPC combines melt are given. This product realised 83% of capacities intensive]. has duly covered these methods. Here aic.18312].
the CO capture effi ciency of the free C. Zhang et al referred to the excellent the delivery of pure CO , the delivery
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enzyme. Easy recycling is possible and stability of COFs, high porosity, and R. Kobatake et al have come out with the Polyurea nanofi ltration (NF)
after 15 cycles the retained effi ciency designable skeleton which make them different strategy for the title separation membranes with extreme pH
was 60%. (Green Chem., 2023; DOI: via a proof-of-concept; adopting urea stability and high separation
10.1039/D3GC02804F). clathrates. This has been demonstrated performance
CFD-DEM fl uidised bed Z. Wang et al have referred to a number
drying (FBD) study using a of industries where extreme-pH cases
coarse-graining technique are encountered. A kind of oil phase
[FBD is widely used in industry and of bicarbonate (e.g. for microalgae culti- monomer TDI and the aq. phase mono-
crystallisation and vaporisation to get design poses problems.] vation) and the formation of carbonate mer polyethyleneimine (PEA) were used
the desired crystalline solid along with an ideal platform for gas capture. Two minerals have been considered. The EPS to make polyurea NF membranes which
the vapour from the liquid feed. This M.J.A. de Munck et al have adopted microporous COFs were synthesised and from a thermodynamic viewpoint. It was process has demonstrated remarkable could stand extreme variation in pH. A
was at reduced temperature and pres- modelling using the CFD-Discrete the presence of abundant oxygen and found that the two clathrates have signifi - capabilities and CO capture effi ciency rejection of 97.5% for MgCl is reported.
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sure. (Chem. Eng. Technol., 2023; DOI: Element Method (DEM) to improve the nitrogen atoms on the walls of M-COFs cant difference in their thermodynamic of over 90% has been realized. Tech- pH=1 was studied for 440 hrs and NaOH
10.1002/ceat.202200587). fundamental understanding of solids further improved gas uptakes. CO capture stability. Propane got concentrated in the no-economic analysis has been done and pH=13 was tested for 200 hrs with suc-
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drying. Coarse-grained CFD-DEM can was at 72.5 cc per gm; CH at 35.2; iodine clathrate and can provide a basis for the future development is indicated. [Ind. cess. [J. Membrane Sci., 2023, 122286;
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Enhancing carbon capture reduce the computational costs thus at 4.74-gm per gm. (New J. Chem., 2023; initial separation. [Ind.Eng.Chem.Res., Eng.Chem.Res.2023, DOI:10.1021/acs. DOI:10.1016/j.memsci.2023.122286].
effi ciency with a large-sized leading to simulate larger fl uidised beds. DOI: 10.1039/D3NJ04595A). 2023, DOI:10.1021/acs.iecr.3C03688]. iecr.3C02183]. Advanced purifi cation of
bionic jellyfi sh-carbonic Three superfi cial gas velocities were isopropanol and acetone from
anhydrase (CA) studied and this approach seems to be Design and synthesis of a Pebax/modifi ed cellulose Effective adsorptive syngas fermentation (SGF)
[It is well known since 1930’s that CA useful. (Ind. Eng. Chem. Res., 2023; water-resistant mesoporous nanofi ber composite removal of trace CO from [SGF is acquiring considerable impor-
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catalyses the absorption of CO in DOI: 10.1021/acs.iecr.3C02960). silica gel for the VOC membranes for highly olefi n using alkanolamine- tance and production of ethanol has
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alkaline solution and this column has adsorption-desorption enhanced CO /CH separation polyethyleneimine started].
covered some papers on this subject. CA Ionic liquids (ILs) and Deep treatment 2 4 functionalized fumed silica
is not stable during desorption.] Eutectic Solvents (DES) T. Narkkun et al have explored use of (APEIFFS) T. Jankovic et al (Prof. A.A.Kiss Group)
for NH absorption and J. Li et al have improved the water resis- biomass-derived cellulose nanofi bers have come out with a potentially useful
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X. Zhu et al have worked on immobili- separation tance of silica gel by modifi cation with as an additive to enhance the separation J. Huang et al have emphasized the strategy of recovering isopropanol and
sation of CA, which can enhance the sta- hydrophobic chemical groups, including of Pebax membrane for the removal of importance of the removal of trace CO acetone from the SGF where their total
bility of the enzyme and reduce the cost. K. Li et al have worked on taking care CH , CH=CH , and C H . Molecular CO from biogas. Succinate functional from C H /C H , particularly for poly- 2 conc. is below 5 wt%. They have con-
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However, immobilisation will reduce of NH from a diverse range of emis- design was adopted and co-condensation groups were modifi ed on the cellulose merization. A novel title adsorbent was sidered a large plant of 1,00,000 tpa of
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mass transfer rates. These authors have sions. This subject has been systemati- of sodium silicate and phenyltriethoxy- nanofi ber (SCNF) to incorporate more developed using a combination of PEI this mixture. “Vaccum distillation and
come out with a bionic jellyfi sh-CA com- cally reviewed and the main contents silane was used as the precursor, under CO -attractive functional groups; 0.5 and diethanolamine. At 25 C the capacity pass-through distillation enhanced with
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plex, which has superior mass transfer of the title solvent and additionally acidic conditions. Mesoporous structure wt% was useful. The CO permeability was 2.212 mmol per gm. [A.I.Ch.E.Jl., heat pumps or multi-effect distillation
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rates and ease of recovery. Here a light hydrous-functionalised ILs, protic ILs, was 5.1-nm. In the case of p-xylene the with this 0.5 wt% addition was 264 Bar- 2023, DOI:10.1002/aic.18292]. were effi ciently coupled with regular
172 Chemical Weekly June 25, 2024 Chemical Weekly June 25, 2024 173
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