Reverse osmosis performance on stripped phenolic sour water treatment - A study on the effect of oil and grease and osmotic pressure
authors Bastos, PDA; Santos, MA; Carvalho, PJ; Crespo, JG
nationality International
journal JOURNAL OF ENVIRONMENTAL MANAGEMENT
author keywords Refinery wastewater; Phenols; Nanofiltration; Reverse osmosis; Water reuse
keywords WASTE-WATER; REMOVAL; SEPARATION
abstract Technologies for water recycling within oil refineries have been gaining interest at an extensive rate due to the large volume of wastewater generated, high dependency of water and the progressive scarcity of this valuable resource. Phenols are part of a specific class of organic pollutants that have been contributing to a low-quality effluent in oil refineries due to their hazardous nature and strict environmental legislation associated. The reuse of stripped sour water within refineries is often blocked due to its rich phenolic content. This study evaluates the retention of phenols in refinery wastewater through reverse osmosis (RO) at its major source of emission, for water reclamation. The RO membrane selected exhibited rejections of up to 98% of phenols and 99% of both chemical oxygen demand (COD) and total organic carbon (TOC). Permeate quality remained intact despite flux decline caused by phenolic and hydrocarbon adsorption when the oil content, in the feed, reached 771 ppm. The effluent's low conductivity due to lack of salts led to minor osmotic pressure differences (less than 23 bar at a volume concentration factor of 3), therefore, showing appealing performances of reverse osmosis filtration. Characterization of all permeates obtained from cross-flow filtration experiments showed COD levels in line with water reuse quality standards for make-up water in cooling processes.
publisher ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
issn 0301-4797
isbn 1095-8630
year published 2020
volume 261
digital object identifier (doi) 10.1016/j.jenvman.2020.110229
web of science category Environmental Sciences
subject category Environmental Sciences & Ecology
unique article identifier WOS:000521511800044
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 5.647
5 year journal impact factor 5.708
category normalized journal impact factor percentile 87.736
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg