Keyword search (3,448 papers available)


Effect of Fe2+ ions on gypsum precipitation during bulk crystallization of reverse osmosis concentrates.

Author(s): Melliti E, Touati K, Van der Bruggen B, Elfil H

In reverse osmosis desalination, the concentrate is a saline solution that may become supersaturated. Heterogeneous nucleation of salts occurs at the membrane surface, resulting in the buildup of inorganic deposits on the membrane. The inorganic nucleation ...

Article GUID: 32814139
Effects of chronic exposure to selenomethionine on social learning outcomes in zebrafish (Danio rerio): serotonergic dysregulation and oxidative stress in the brain.

Author(s): Attaran A, Salahinejad A, Naderi M, Crane AL, Niyogi S, Chivers DP

Chemosphere. 2020 Jan 11;247:125898 Authors: Attaran A, Salahinejad A, Naderi M, Crane AL, Niyogi S, Chivers DP

Article GUID: 31972490
Exploring the use of ceramic disk filter coated with Ag/ZnO nanocomposites as an innovative approach for removing Escherichia coli from household drinking water.

Author(s): Huang J, Huang G, An C, Xin X, Chen X, Zhao Y, Feng R, Xiong W

Chemosphere. 2019 Dec 06;245:125545 Authors: Huang J, Huang G, An C, Xin X, Chen X, Zhao Y, Feng R, Xiong W

Article GUID: 31864067
A biophysiological perspective on enhanced nitrate removal from decentralized domestic sewage using gravitational-flow multi-soil-layering systems.

Author(s): Song P, Huang G, Hong Y, An C, Xin X, Zhang P

Chemosphere. 2019 Sep 14;240:124868 Authors: Song P, Huang G, Hong Y, An C, Xin X, Zhang P

Article GUID: 31542583
Electrochemical efficacy of a carboxylated multiwalled carbon nanotube filter for the removal of ibuprofen from aqueous solutions under acidic conditions.

Author(s): Bakr AR, Rahaman MS

Chemosphere. 2016 Jun;153:508-20 Authors: Bakr AR, Rahaman MS

Article GUID: 27035389
Electro-demulsification of water-in-oil suspensions enhanced with implementing various additives.

Author(s): Taslimi Taleghani S, Fellah Jahromi A, Elektorowicz M

Chemosphere. 2019 May 20;233:157-163 Authors: Taslimi Taleghani S, Fellah Jahromi A, Elektorowicz M

Article GUID: 31173953
Hierarchical magnetic petal-like Fe3O4-ZnO@g-C3N4 for removal of sulfamethoxazole, suppression of photocorrosion, by-products identification and toxicity assessment

Author(s): Mirzaei A; Chen Z; Haghighat F; Yerushalmi L;

Herein, a petal-like photocatalyst, Fe3O4-ZnO@g-C3N4 (FZG) with different g-C3N4 to ZnO ratios was synthesized with hierarchical structure. The FZG1 photocatalyst, having the weight ratio of 1:1 for the initial urea and Fe3O4-ZnO (Fe-ZnO), presented the hig...

Article GUID: 29705637
Hydrothermal/solvothermal synthesis and treatment of TiO2 for photocatalytic degradation of air pollutants: Preparation, characterization, properties, and performance.

Author(s): Mamaghani AH, Haghighat F, Lee CS

Chemosphere. 2019 Mar;219:804-825 Authors: Mamaghani AH, Haghighat F, Lee CS

Article GUID: 30572234
Wastewater treatment in amine-based carbon capture.

Author(s): Dong C, Huang G, Cheng G, An C, Yao Y, Chen X, Chen J

Chemosphere. 2019 May;222:742-756 Authors: Dong C, Huang G, Cheng G, An C, Yao Y, Chen X, Chen J

Article GUID: 30738317
Title:Electrochemical efficacy of a carboxylated multiwalled carbon nanotube filter for the removal of ibuprofen from aqueous solutions under acidic conditions.
Authors:Bakr AR,  Rahaman MS
Link:https://www.ncbi.nlm.nih.gov/pubmed/27035389?dopt=Abstract
DOI:10.1016/j.chemosphere.2016.03.078
Category:Chemosphere
PMID:27035389
Dept Affiliation: MASSSPEC
1 Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, Quebec, H3G 1M8, Canada.
2 Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, Quebec, H3G 1M8, Canada. Electronic address: saifur.rahaman@concordia.ca.

Description:

Electrochemical efficacy of a carboxylated multiwalled carbon nanotube filter for the removal of ibuprofen from aqueous solutions under acidic conditions.

Chemosphere. 2016 Jun;153:508-20

Authors: Bakr AR, Rahaman MS

Abstract

This study provides insight into the efficiency of a functionalized multiwalled carbon nanotube filter for the removal of an anti-inflammatory drug, ibuprofen, through conventional filtration and electrochemical filtration processes. A comparison was made between carboxylated multiwalled carbon nanotubes (MWNTs-COOH) and pristine multiwalled carbon nanotubes (MWNTs) in order to emphasize the enhanced performance of MWNTs-COOH for the removal of ibuprofen using an electrochemical filtration process under acidic conditions. Ibuprofen-removal trials were evaluated based on absorbance values obtained using a UV/Vis spectrophotometer, and possible degradation products were identified using liquid chromatography mass spectrometry (LC-MS). The results exhibited near complete removal of ibuprofen by MWNTs-COOH at lower applied potentials (2 V), at lower flow rates, and under acidic conditions, which can be attributed to the generation of superoxides and their active participation in simultaneous degradation of ibuprofen, and its by-products, under these conditions. At higher applied potential (3 V), the possible participation of both bulk indirect oxidation reactions, and direct electron transfer were hypothesized for the removal behavior over time (breakthrough). At 3 V under acidic conditions, near 100% removal of the target molecule was achieved and was attributed to the enhanced generation of electroactive species toward bulk chemical reactions and a possible contribution from direct electron transfer under these conditions. The degradation by-products of ibuprofen were effectively removed by allowing longer residence time during the filtration process. Moreover, the effect of temperature was studied, yet showed a non-significant effect on the overall removal process.

PMID: 27035389 [PubMed - indexed for MEDLINE]