Continuous column adsorption of naphthenic acids from synthetic and real oil sands process-affected water (OSPW) using carbon-based adsorbents

Hojatallah Seyedy Niasar; Sreejon Das; Chunbao (Charles) Xu; Madhumita B. Ray

doi:10.1016/j.chemosphere.2018.09.078

Author(s)

Hojatallah Seyedy Niasar
Sreejon Das
Chunbao (Charles) Xu
Madhumita B. Ray

Detail(s)

Original language	English
Pages (from-to)	511-518
Journal / Publication	Chemosphere
Volume	214
Online published	17 Sept 2018
Publication status	Published - Jan 2019
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.chemosphere.2018.09.078 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85054642194&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(fff1bfe0-5917-41df-b492-ee3d2cf66173).html

Abstract

In this study, activated petroleum coke (APC) and commercial activated carbon (CAC) were used in a continuous adsorption column for removal of model naphthenic acids and organics from real oil sands process-affected water (OSPW). Diphenylacetic acid and 2-naphthoic acid, two model naphthenic acid (NA) compounds, were removed completely by the APC in a continuous column operation. Due to the complex nature of organics in OSPW, total organic carbon (TOC) was measured to determine the effectiveness of OSPW treatment by APC. The removal of TOC from OSPW at its natural pH 8 by APC was only 25%, whereas acidification at pH 4 followed by APC adsorption removed 96% of the initial TOC. When compared to a commercial activated carbon, the APC showed an average of 20% higher organics removal. The experimental breakthrough curves were better fitted by Thomas model in comparison to Adams-Bohart and Yoon-Nelson models. The regeneration of APC was conducted using methanol with 0.01 wt% NaOH (pH = 11.7) and a total of four cycles of adsorption and regeneration were conducted with marginal loss of adsorption sites. © 2018 Elsevier Ltd

Research Area(s)

Adsorption, Breakthrough curve modelling, Continuous column, Naphthenic acids, Oil-sands processaffected water, Petroleum coke

Citation Format(s)

[ RIS ] [ BibTeX ]

Continuous column adsorption of naphthenic acids from synthetic and real oil sands process-affected water (OSPW) using carbon-based adsorbents. / Niasar, Hojatallah Seyedy; Das, Sreejon; Xu, Chunbao (Charles) et al.
In: Chemosphere, Vol. 214, 01.2019, p. 511-518.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Niasar, HS, Das, S, Xu, C & Ray, MB 2019, 'Continuous column adsorption of naphthenic acids from synthetic and real oil sands process-affected water (OSPW) using carbon-based adsorbents', Chemosphere, vol. 214, pp. 511-518. https://doi.org/10.1016/j.chemosphere.2018.09.078

Niasar, H. S., Das, S., Xu, C., & Ray, M. B. (2019). Continuous column adsorption of naphthenic acids from synthetic and real oil sands process-affected water (OSPW) using carbon-based adsorbents. Chemosphere, 214, 511-518. https://doi.org/10.1016/j.chemosphere.2018.09.078

Niasar HS, Das S, Xu C, Ray MB. Continuous column adsorption of naphthenic acids from synthetic and real oil sands process-affected water (OSPW) using carbon-based adsorbents. Chemosphere. 2019 Jan;214:511-518. Epub 2018 Sept 17. doi: 10.1016/j.chemosphere.2018.09.078

Niasar, Hojatallah Seyedy ; Das, Sreejon ; Xu, Chunbao (Charles) et al. / Continuous column adsorption of naphthenic acids from synthetic and real oil sands process-affected water (OSPW) using carbon-based adsorbents. In: Chemosphere. 2019 ; Vol. 214. pp. 511-518.