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Start-up of oxygen-limited autotrophic partial nitrification-anammox process for treatment of nitrite-free wastewater in a single-stage hybrid bioreactor.

Author(s): Hosseinpour B, Saborimanesh N, Yerushalmi L, Walsh D, Mulligan CN

Environ Technol. 2019 Aug 04;:1-9 Authors: Hosseinpour B, Saborimanesh N, Yerushalmi L, Walsh D, Mulligan CN

Article GUID: 31378146
Pilot-scale application of a single-stage hybrid airlift BioCAST bioreactor for treatment of ammonium from nitrite-limited wastewater by a partial nitrification/anammox process.

Author(s): Saborimanesh N, Walsh D, Yerushalmi L, Arriagada EC, Mulligan CN

Environ Sci Pollut Res Int. 2019 Jul 02;: Authors: Saborimanesh N, Walsh D, Yerushalmi L, Arriagada EC, Mulligan CN

Article GUID: 31267396
Photocatalytic degradation of sulfamethoxazole by hierarchical magnetic ZnO@g-C3N4: RSM optimization, kinetic study, reaction pathway and toxicity evaluation.

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

J Hazard Mater. 2018 Oct 05;359:516-526 Authors: Mirzaei A, Yerushalmi L, Chen Z, Haghighat F

Article GUID: 30086522
Sonocatalytic removal of ampicillin by Zn(OH)F: Effect of operating parameters, toxicological evaluation and by-products identification.

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

J Hazard Mater. 2019 Apr 22;375:86-95 Authors: Mirzaei A, Haghighat F, Chen Z, Yerushalmi L

Article GUID: 31054533
Title:Photocatalytic degradation of sulfamethoxazole by hierarchical magnetic ZnO@g-C3N4: RSM optimization, kinetic study, reaction pathway and toxicity evaluation.
Authors:Mirzaei A,  Yerushalmi L,  Chen Z,  Haghighat F
Link:https://www.ncbi.nlm.nih.gov/pubmed/30086522?dopt=Abstract
Category:J Hazard Mater
PMID:30086522
Dept Affiliation: ENCS
1 Department of Building, Civil and Environmental Engineering (BCEE), Faculty of Engineering & Computer Sciences, Concordia University, Montreal, Canada.
2 Department of Building, Civil and Environmental Engineering (BCEE), Faculty of Engineering & Computer Sciences, Concordia University, Montreal, Canada. Electronic address: zhichen@alcor.concordia.ca.

Description:

Photocatalytic degradation of sulfamethoxazole by hierarchical magnetic ZnO@g-C3N4: RSM optimization, kinetic study, reaction pathway and toxicity evaluation.

J Hazard Mater. 2018 Oct 05;359:516-526

Authors: Mirzaei A, Yerushalmi L, Chen Z, Haghighat F

Abstract

The degradation of sulfamethoxazole (SMX) by a synthesized hierarchical magnetic zinc oxide based composite ZnO@g-C3N4 (FZG) was examined. Hierarchical FZG was synthesized by using Fe3O4 nanoparticle as the magnetic core and urea as the precursor for in situ growth of g-C3N4 on the surface of petal-like ZnO. The effect of catalyst dosage (0.4-0.8?g/L), solution pH (3-11) and airflow rate (0.5-2.5?L/min) on the SMX removal efficiency and the optimization of process was studied by response surface methodology (RSM) based on central composite design (CCD). The obtained RSM model with R2?=?0.9896 showed a satisfactory correlation between the predicted values and experimental results of SMX removal. Under the optimum conditions, i.e. 0.65?g/L photocatalyst concentration, pH?=?5.6 and airflow rate?=?1.89?L/min, 90.4% SMX removal was achieved after 60?min reaction. The first-order kinetic rate constant for SMX removal by using FZG was 0.0384 min-1 while the rate constant by commercial ZnO was 0.0165?min-1. Moreover, under the optimum conditions, about 64% COD removal and 45% TOC removal and a considerable reduction in toxicity were observed. The analysis of generated intermediates during the photocatalytic degradation of SMX was conducted by LC-HR-MS/MS method and a degradation pathway was proposed.

PMID: 30086522 [PubMed - in process]