1	Membrane materials
2	2D materials (graphene, phosphorene, etc)
3	Polymer, biopolymer membranes (formation, modification, characterization)
4	Mixed matrix membranes (formation, modification, characterization)
5	Inorganic membranes (formation, modification, characterization)
6	Carbon membranes (formation, modification, characterization)
7	Biohybrid, biomimetic, bioinspired, bionic membranes (formation, modification, characterization)
8	Molecular imprinted membranes, chiral membranes
9	Nanostructured and multifunctional membranes
10	Facilitated transport membranes
11	Membrane surface modification/membrane functionalization
12	Mass transport in membranes
13	Modelling and simulation in membrane science & engineering
14	Multi-scale modelling in membrane science & engineering
15	Computational modelling in membrane science & engineering
16	Artificial intelligence methodologies in membrane science & engineering
17	Membrane fouling, biofouling, scaling, ageing, cleaning& maintenance
18	Pre-treatment methods for membrane processes
19	Membrane modules
20	Microfiltration, Ultrafiltration
21	Nanofiltration, Reverse Osmosis
22	Organic solvent nanofiltration
23	Forward osmosis, pressure retarded osmosis
24	Electromembrane processes (RED, ED, etc.)
25	Membranes for energy, (microbial) fuel cells, batteries, electrolyzer
26	Membrane contactors, membrane condenser, membrane dryier
27	Membrane distillation, osmotic distillation, membrane crystallization
28	Membrane emulsification, membrane nanoprecipitation
29	Membrane-based solvent extraction
30	Membrane reactors, photocatalytic membrane reactors
31	Membrane bioreactors, submerged MBR
32	Immobilized enzymes and biocatalytic membrane reactors
33	Pervaporation, vapor permeation
34	Membranes in gas and vapor separation
35	Membranes in hydrogen production and separation
36	Membranes for CO2 capture
37	Membranes for seawater and brackish water desalination
38	Membranes in wastewater treatment
39	Membranes in drinking water
40	Membranes in agro-food processing and food packaging
41	Membrane affinity chromatography
42	Membranes in biotechnology, bioprocessing, bioseparations, biorefinery, biosensors
43	Membrane (bio)artificial organs
44	Membrane tissue engineering and regenerative medicine
45	Membranes in controlled delivery/release
46	Membranes for air treatment (purification, dehumidification)
47	Membrane systems in space science and space engineering
48	Integrated membrane processes
49	Hybrid, novel membrane processes, new trends in membrane science and technology
50	Membrane process intensification, techno-economic analysis, life cycle assessment