Page 169 - CW E-Magazine (13-2-2024)

Special Report

A rapid wrap-up of what’s new in Operations,

Processes and Products

Separation Technology

A universal strategy for effi-
cient synthesis of Zr-based
MOF nanoparticles (NPs) for
enhanced water adsorption
[Water harvesting is attracting a lot of
attention particularly in water starved
arid/desert areas and this column has
covered some papers.]

Y. Guo et al have referred to the out-
standing thermal and chemical stability
of Zr-MOF. These authors have made
high-quality Zr-MOF NPs with tuneable
and uniform particle size. These exhibit

CO removal Integration of membrane con-
2
[This problem has acquired a lot of tactors and catalytic solvent
importance and this column has covered regeneration for efficient CO
many papers, particularly the use of capture 2
different amines, catalysis of desorp-
tion, etc.] K. Xue et al have used ceramic mem-
brane module and aqueous monoethanol-
Effects of metal oxides on amine (MEA) was used as absorbent The digital pictures of UiO-66 synthesized for
5 min under different ICRPB rotating speeds.
ammonia escape and CO desorp and powder metatitanic acid was the (a) 500 rpm, (b) 1500 rpm, (c) 2500 rpm.
2
tion during NH decarboni- catalyst. Their result indicates that the faster water adsorption rate and the
3
sation regeneration nanofluid effect of the catalyst reduced highest adsorption capacity of 625 mg
the mass transfer resistance and im- per gm. (AIChE Jl, 2023; DOI: 10.1002/
Z. Lv et al have referred to the high proved CO rate of absorption. Further, aic.18181).
2
energy consumption in desorbers and the energy consumption in solvent
many attempts are being made to reduce regeneration was reduced by about 41% Nature-inspired surface engi-
this (and this has been covered in this using 2 wt% TiO (OH) . Membrane neering for efficient atmosphe-
2
column). These authors have considered fouling was avoided. (J. Membrane ric water harvesting
four metal oxides during regeneration. Sci. 2023, 684, 15 Oct., 121870; DOI:
WO enhances the desorption of CO 10.1016/j.memsci.2023.121870). Z. Li et al have reported a novel
3
2
while inhibiting the escape of NH . With water collector design based on a
3
4 wt% WO at 90°C, the CO regenera- nature-inspired hybrid superhydrophilic/
2
3
tion rate increased by about 69%. Mecha- superhydrophobic Al surface, which
nism for this result is discussed. (Ind. is fabricated by combining laser and
Eng. Chem. Res., 2023, DOI: 10.1021/ chemical treatments. This design leads
acs.iecr.3c01094). to a self-pumped mechanism allowing
Chemical Weekly February 13, 2024 169

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