Recovery of cutting oil from wastewater by pervaporation process using natural clay modified PVA membrane | Zendy

Derya Ünlü | Zendy

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Recovery of cutting oil from wastewater by pervaporation process using natural clay modified PVA membrane

Author(s) -

Derya Ünlü

Publication year - 2019

Publication title -

water science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.406

H-Index - 137

eISSN - 1996-9732

pISSN - 0273-1223

DOI - 10.2166/wst.2020.064

Subject(s) - pervaporation , membrane , dehydration , thermogravimetric analysis , thermal stability , chemical engineering , wastewater , materials science , diethylene glycol , scanning electron microscope , chemistry , chromatography , waste management , composite material , organic chemistry , permeation , ethylene glycol , engineering , biochemistry

In this study, the pervaporative dehydration of the cutting oil ‘diethylene glycol’ (DEG) through a hydrophilic PVA membrane was investigated at various operation temperatures in the range of 333–363 K with a feed mixture containing 0.5–2.0 wt% water. The pervaporation (PV) performance of poly(vinyl alcohol) (PVA) is enhanced by the addition of natural clay kaolin into the pristine membrane. The thermal stability of the membranes was analyzed by thermal gravimetric analysis (TGA). The morphological analysis of the membranes was performed by scanning electron microscope (SEM). Separation success was determined by calculation of flux, selectivity, and PSI. These values were investigated as functions of the clay amount, feed concentration and feed temperature. The obtained results show that PV is an effective method for recycling waste cutting oil from wastewater.

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