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HERO ID
5932886
Reference Type
Journal Article
Title
Ethanol-activated granular aerogel as efficient adsorbent for persistent organic pollutants from real leachate and hospital wastewater
Author(s)
Prasanna, VL; Mamane, H; Vadivel, VK; Avisar, D
Year
2020
Is Peer Reviewed?
Yes
Journal
Journal of Hazardous Materials
ISSN:
0304-3894
EISSN:
1873-3336
Publisher
Elsevier B.V.
Location
AMSTERDAM
Volume
384
Page Numbers
121396
Language
English
PMID
31610343
DOI
10.1016/j.jhazmat.2019.121396
Web of Science Id
WOS:000535561100123
Abstract
Hydrophobic aerogels were used to remove three types of persistent organic pollutants: pharmaceutical drugs (i.e. doxorubicin [DOX], paclitaxel [TAX]), phthalates (diethyl phthalate [DEP]), and hydrophilic rhodamine dye (RhB) from synthetic and real wastewaters, using Lumira granular aerogel from Cabot activated with EtOH (ET-GAG). The hydrophobic silica aerogel was characterized by X-ray diffraction (XRD), High-Resolution Transmission Electron Microscopy (HRTEM), Brunauer-Emmet-Teller (BET) and attenuated total reflection-Fourier transform infrared spectroscopy. The pollutants were analysed by high-performance liquid chromatography (HPLC)-UV and HPLC-mass spectrometry. The adsorption process was governed by hydrophobic- hydrophobic interactions between the ET-GAG and micropollutants. The adsorption capacity of ET-GAG, examined by batch experiments, for DOX, TAX and DEP were 13.80, 14.28 and 17.54 mg/g respectively. The rate of adsorption to ET-GAG is high in the initial 40 min followed by no change in the rate due to saturation of adsorption sites. ET-GAG was able to completely remove micropollutants from real leachate and hospital wastewater, implying practical applications. Regeneration of the aerogel was studied by solvent extraction. Et-GAG adsorbent demonstrated better removal of toxic chemotherapeutic drugs and phthalates than GAC.
Keywords
Chemotherapeutic drugs; Ethanol activated granular aerogel; Hospital wastewater and leachate; Hydrophobic silica aerogel; Persistent organic pollutant; Phthalate
Tags
IRIS
•
Diethyl phthalate (DEP)
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Jan 2020 update
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