ASE	Accelerated solvent extraction
COD	Chemical oxygen demand
HVED	High voltage electrical discharges
MAE	Microwave assisted extraction
MF	Microfiltration
MWCO	Molecular weight cut-off
NF	Nanofiltration
OMWs	Olive mill wastewaters
PA	Polyamide
PEF	Pulsed electric fields
PES	Polyethersulfone
POH	pulsed ohmic heating
PPs	Polyphenols
PS	Polysulfone
PVDF	Polyvinylidene fluoride
RO	Reverse osmosis
SbFE	Subcritical fluid extraction
SCFE	Supercritical fluid extraction
TAA	Total antioxidant activity
TMP	Transmembrane pressure
TOC	Total organic carbon
TSS	Total suspended solids
UAE	Ultrasound-assisted extraction
UF	Ultrafiltration