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Salesi S, Nezamzadeh-Ejhieh A. An experimental design study of photocatalytic activity of the Z-scheme silver iodide/tungstate binary nano photocatalyst. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:105440-105456. [PMID: 37715909 DOI: 10.1007/s11356-023-29730-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 09/01/2023] [Indexed: 09/18/2023]
Abstract
A binary AgI/ Ag2WO4 photocatalyst was fabricated and characterized by SEM, XRD, UV-Vis DRS, and FT-IR. It was then used to photodegrade sodium ceftriaxone (CTX) in an aqueous solution. The band gap energies of 2.95, 2.78, and 2.62 eV were obtained by the Kubelka-Munk model for Ag2WO4, AgI, and AgI/Ag2WO4 catalysts. The samples have pHPZC values of 6.9, 4.2, and 6.6, respectively. The synergistic photocatalytic activity of the coupled system depended on the AgI:Ag2WO4 mole ratio and grinding time (optimums:mole ratio of 4:1 and time 30 min). The experimental design was used for optimizing the conditions and a quadratic model well-processed the data based on the model F value of 131.87 > F0.05,14,13 = 2.55 and LOF F value of 0.78 < F0.05,10,3 = 8.78. The optimized RSM run included the irradiation time of 85 min, 3.5 mg/L of CTX sample at pH 9, and a catalyst dose of 1.0 g/L. Under the optimized conditions, about 63% of CTX molecules were photodegraded. In the study of the scavenging agents, the direct Z-scheme mechanism accumulated electrons in the CB-AgI and the holes in the VB-Ag2WO4 level, as stronger reducing and oxidizing centers than the accumulated electrons and holes of the type (II) heterojunction mechanism. Compared to a CTX oxidation potential of about 0.06 V, the direct Z-scheme mechanism is more favorable to reduce or oxidize it.
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Affiliation(s)
- Sabereh Salesi
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P. O. Box 311-86145, Shahreza, Isfahan, Islamic Republic of Iran
| | - Alireza Nezamzadeh-Ejhieh
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P. O. Box 311-86145, Shahreza, Isfahan, Islamic Republic of Iran.
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2
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Asadi-Ghalhari M, Usefi S, Ghafouri N, Kishipour A, Mostafaloo R, Tabatabaei FS. Modeling and optimization of the coagulation/flocculation process in turbidity removal from water using poly aluminum chloride and rice starch as a natural coagulant aid. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:527. [PMID: 37000307 DOI: 10.1007/s10661-023-11150-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 03/20/2023] [Indexed: 06/19/2023]
Abstract
The application of the coagulation/flocculation process is very important due to its simplicity in removing turbidity. Due to the disadvantages of using chemical coagulants in water and the lack of sufficient effect of natural materials alone in removing turbidity for proper performance, the simultaneous use of chemical and natural coagulants is the best way to reduce the harmful effects of chemical coagulants in water. In this study, the application of poly aluminum chloride (PAC) as a chemical coagulant and rice starch as a natural coagulant aid to remove turbidity from aqueous solutions was investigated. Effects of the above coagulants on the four main factors, coagulant dose (0-10 mg/L), coagulant adjuvant dose (0-0.1 mg/L), pH (5-9), turbidity (NTU 0-50), and each five levels were assessed using a central composite design (CCD). Under the optimized conditions, the maximum turbidity elimination efficiency was found to be 96.6%. The validity and adequacy of the proposed model (quadratic model) were confirmed by the corresponding statistics (i.e., F-value of 23.3, p-values of 0.0001, and lack of fit of 0.877 for the model, respectively, R2 = 0.88, R2adj. = 0.84, R2 pred = 0.79, AP = 22.04).
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Affiliation(s)
- Mahdi Asadi-Ghalhari
- Department of Environmental Health Engineering, Faculty of Health, Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran.
| | - Saideh Usefi
- Student Research Committee, Qom University of Medical Sciences, Qom, Iran
| | - Nassim Ghafouri
- Department of Environmental Health Engineering, Alborz University of Medical Sciences, Alborz, Iran
| | - Amin Kishipour
- Department of Environmental Health Engineering, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Roqiyeh Mostafaloo
- Department of Environmental Health Engineering, School of Public Health and Research Center for Health Sciences, Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Fatemeh Sadat Tabatabaei
- Department of Environmental Health Engineering, Faculty of Health, Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran
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3
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John S, Rathinavelu S, Mary SMS, Nambi IM, Babu SM, Thomas T, Singh S. Solar-driven hybrid photo-Fenton degradation of persistent antibiotic ciprofloxacin by zinc ferrite-titania heterostructures: degradation pathway, intermediates, and toxicity analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:39605-39617. [PMID: 36598720 DOI: 10.1007/s11356-022-24926-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
Present work puts forward an efficient strategy to degrade one of the persistent antibiotic contaminants, ciprofloxacin (CIP). Hybrid advanced oxidation process (HAOP) is tailored with a synergy effect between photocatalysis and photo-Fenton catalysis on zinc ferrite-titania heterostructured composite (ZFO-TiO2). The ZFO-TiO2 heterostructured composite enables heterogenous surfaces for enhanced charge separation where HAOP is implemented for CIP degradation with the aid of class AAA solar simulator. The results reveal an enhanced degradation rate of CIP (kobs = 0.255 min-1), noticeably higher than the conventional TiO2-based photocatalysis. The HAOP system strongly enhances the reaction rates showing five times higher performance as compared to TiO2-based photocatalysis. The substitution reactions for degradation of CIP into its intermediates were analyzed by LC-MS/MS, and the plausible degradation pathways have been graphically modeled identifying 3-phenyl-1-propanol and phenol molecules as less toxic end products. Toxicity of the photodegraded samples reveal 18.1 ± 1.24% inhibition of V. fischeri at the end of 60-min treatment indicating reduced toxicity of CIP contaminated samples. Antimicrobial inhibition studies on E. coli also corroborate an effective CIP removal (~ 100%) in less than 90 min. The study puts forward a novel ZFO-TiO2 composite HAOP system for efficient and rapid mineralization of an antibiotic pollutant, extendable towards wide range of pharmaceutical drug degradation studies.
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Affiliation(s)
- Sangeeth John
- Crystal Growth Centre, A.C. Tech Campus, Anna University, Chennai, India, 600025
| | | | | | | | | | - Tiju Thomas
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Chennai, India, 600036
| | - Shubra Singh
- Crystal Growth Centre, A.C. Tech Campus, Anna University, Chennai, India, 600025.
- Centre for Energy Storage Technologies, Anna University, Chennai, 600025, India.
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4
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Agarkoti C, Chaturvedi A, Gogate PR, Pandit AB. Degradation of sulfamerazine using ultrasonic horn and pilot scale US reactor in combination with different oxidation approaches. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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5
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Pandya K, T S AS, Kodgire P, Simon S. Combined ultrasound cavitation and persulfate for the treatment of pharmaceutical wastewater. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 86:2157-2174. [PMID: 36378172 DOI: 10.2166/wst.2022.304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
In recent years industrialization has caused magnificent leaps in the high profitable growth of pharmaceutical industries, and simultaneously given rise to environmental pollution. Pharmaceutical processes like extraction, purification, formulation, etc., generate a large volume of wastewater that contains high chemical oxygen demand (COD), biological oxygen demand, auxiliary chemicals, and different pharmaceutical substances or their metabolites in their active or inactive form. Its metabolites impart non-biodegradable toxic pollutants as a byproduct and intense color, which increases ecotoxicity into the water, thus this requires proper treatment before being discharged. This study focuses on the feasibility analysis of the utilization of ultrasound cavitation (20 kHz frequency) together with a persulfate oxidation approach for the treatment of complex pharmaceutical effluent. Process parameters like pH, amplitude intensity, oxidant dosage were optimized for COD removal applying response surface methodology-based Box-Behnken design. The optimum value observed for pH, amplitude intensity and oxidant dosage are 5, 20% and 100 mg/L respectively with 39.5% removal of COD in 60 min of fixed processing time. This study confirms that a combination of ultrasound cavitation and persulfate is a viable option for the treatment of pharmaceutical wastewater and can be used as an intensification technology in existing effluent treatment plants to achieve the highest amount of COD removal.
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Affiliation(s)
- Karan Pandya
- Department of Civil Engineering, School of Technology, Pandit Deendayal Energy University, Gandhinagar, Gujarat, India E-mail:
| | - Anantha Singh T S
- Department of Civil Engineering, School of Technology, Pandit Deendayal Energy University, Gandhinagar, Gujarat, India E-mail: ; Department of Civil Engineering, National Institute of Technology Calicut, Calicut, India
| | - Pravin Kodgire
- Department of Chemical Engineering, School of Technology, Pandit Deendayal Energy University, Gandhinagar, Gujarat, India
| | - Saji Simon
- Department of Civil Engineering, National Institute of Technology Calicut, Calicut, India
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6
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Removal of Amoxicillin from Aqueous Media by Fenton-like Sonolysis/H2O2 Process Using Zero-Valent Iron Nanoparticles. Molecules 2022; 27:molecules27196308. [PMID: 36234843 PMCID: PMC9573736 DOI: 10.3390/molecules27196308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/08/2022] [Accepted: 09/20/2022] [Indexed: 12/07/2022] Open
Abstract
High concentrations of antibiotics have been identified in aqueous media, which has diminished the quality of water resources. These compounds are usually highly toxic and have low biodegradability, and there have been reports about their mutagenic or carcinogenic effects. The aim of this study was to apply zero-valent iron-oxide nanoparticles in the presence of hydrogen peroxide and the sonolysis process for the removal of the amoxicillin antibiotic from aqueous media. In this study, zero-valent iron nanoparticles were prepared by an iron chloride reduction method in the presence of sodium borohydride (NaBH4), and the obtained nanoparticles were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and vibrating-sample magnetometry (VSM). Then, using a Fenton-like process, synthetic wastewater containing 100 to 500 mg/L amoxicillin antibiotic was investigated, and the effects of different parameters, such as the frequency (1 and 2 kHz), contact time (15 to 120 min), the concentration of hydrogen peroxide (0.3%, 0.5%, and 6%), the dose of zero-valent iron nanoparticles (0.05, 0.1, 0.5 g/L), and pH (3, 5, 10) were thoroughly studied. A pH of 3, hydrogen peroxide concentration of 3%, ultrasonic-wave frequency of 130 kHz, zero-valent iron nanoparticles of 0.5 g/L, and contaminant concentration of 100 mg/L were obtained as the optimal conditions of the combined US/H2O2/nZVI process. Under the optimal conditions of the combined process of zero-valent iron nanoparticles and hydrogen peroxide in the presence of ultrasonic waves, a 99.7% removal efficiency of amoxicillin was achieved in 120 min. The results show that the combined US/H2O2/nZVI process could be successfully used to remove environmental contaminants, including antibiotics such as amoxicillin, with a high removal percentage.
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Ghafoori S, Omar M, Koutahzadeh N, Zendehboudi S, Malhas RN, Mohamed M, Al-Zubaidi S, Redha K, Baraki F, Mehrvar M. New advancements, challenges, and future needs on treatment of oilfield produced water: A state-of-the-art review. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120652] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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8
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Rahman S, Nawaz R, Khan JA, Ullah H, Irfan M, Glowacz A, Lyp-Wronska K, Wzorek L, Asif Khan MK, Jalalah M, Alsaiari MA, Almawgani AH. Synthesis and Characterization of Carbon and Carbon-Nitrogen Doped Black TiO 2 Nanomaterials and Their Application in Sonophotocatalytic Remediation of Treated Agro-Industrial Wastewater. MATERIALS 2021; 14:ma14206175. [PMID: 34683764 PMCID: PMC8538577 DOI: 10.3390/ma14206175] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/12/2021] [Accepted: 10/15/2021] [Indexed: 11/29/2022]
Abstract
The conventional open ponding system employed for palm oil mill agro-effluent (POME) treatment fails to lower the levels of organic pollutants to the mandatory standard discharge limits. In this work, carbon doped black TiO2 (CB-TiO2) and carbon-nitrogen co-doped black TiO2 (CNB-TiO2) were synthesized via glycerol assisted sol-gel techniques and employed for the remediation of treated palm oil mill effluent (TPOME). Both the samples were anatase phase, with a crystallite size of 11.09–22.18 nm, lower bandgap of 2.06–2.63 eV, superior visible light absorption ability, and a high surface area of 239.99–347.26 m2/g. The performance of CNB-TiO2 was higher (51.48%) compared to only (45.72%) CB-TiO2. Thus, the CNB-TiO2 is employed in sonophotocatalytic reactions. Sonophotocatalytic process based on CNB-TiO2, assisted by hydrogen peroxide (H2O2), and operated at an ultrasonication (US) frequency of 30 kHz and 40 W power under visible light irradiation proved to be the most efficient for chemical oxygen demand (COD) removal. More than 90% of COD was removed within 60 min of sonophotocatalytic reaction, producing the effluent with the COD concentration well below the stipulated permissible limit of 50 mg/L. The electrical energy required per order of magnitude was estimated to be only 177.59 kWh/m3, indicating extreme viability of the proposed process for the remediation of TPOME.
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Affiliation(s)
- Saifur Rahman
- Electrical Engineering Department, College of Engineering, Najran University Saudi Arabia, Najran 61441, Saudi Arabia; (S.R.); (M.I.); (M.J.); (A.H.A.)
| | - Rab Nawaz
- Fundamental and Applied Sciences (FASD), Universiti Teknologi PETRONAS (UTP), Seri Iskandar 32610, Malaysia;
- Centre of Innovative Nanostructures and Nanodevices (COINN), Institute of Autonomous System, Universiti Teknologi PETRONAS (UTP), Seri Iskandar 32610, Malaysia
- Correspondence: (R.N.); (J.A.K.); Tel.: +60-14-305-6299 or +92-30-0568-6547 (R.N.); +60-16-958-2343 (J.A.K.)
| | - Javed Akbar Khan
- Mechanical Engineering Department, Universiti Teknologi Petronas, Seri Iskandar 32610, Malaysia
- Correspondence: (R.N.); (J.A.K.); Tel.: +60-14-305-6299 or +92-30-0568-6547 (R.N.); +60-16-958-2343 (J.A.K.)
| | - Habib Ullah
- Fundamental and Applied Sciences (FASD), Universiti Teknologi PETRONAS (UTP), Seri Iskandar 32610, Malaysia;
| | - Muhammad Irfan
- Electrical Engineering Department, College of Engineering, Najran University Saudi Arabia, Najran 61441, Saudi Arabia; (S.R.); (M.I.); (M.J.); (A.H.A.)
| | - Adam Glowacz
- Department of Automatic Control and Robotics, Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Kraków, Poland;
| | - Katarzyna Lyp-Wronska
- Department of Materials Science and Non-Ferrous Metal Engineering, Faculty of Non-Ferrous Metals, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland;
| | - Lukasz Wzorek
- Wzorek.Systems, ul. Kapelanka 10/18, 30-347 Kraków, Poland;
| | - Mohammad Kamal Asif Khan
- Mechanical Engineering Department, College of Engineering, Najran University Saudi Arabia, Najran 11001, Saudi Arabia;
| | - Mohammed Jalalah
- Electrical Engineering Department, College of Engineering, Najran University Saudi Arabia, Najran 61441, Saudi Arabia; (S.R.); (M.I.); (M.J.); (A.H.A.)
| | - Mabkhoot A. Alsaiari
- Empty Qaurter Research Unit, Chemistry Department, College of Science and Art at Sharurah, Najran University Saudi Arabia, Najran 61441, Saudi Arabia;
| | - Abdulkarem H. Almawgani
- Electrical Engineering Department, College of Engineering, Najran University Saudi Arabia, Najran 61441, Saudi Arabia; (S.R.); (M.I.); (M.J.); (A.H.A.)
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9
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Wang C, Lei H, Kong X, Zou R, Qian M, Zhao Y, Mateo W. Catalytic upcycling of waste plastics over nanocellulose derived biochar catalyst for the coupling harvest of hydrogen and liquid fuels. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 779:146463. [PMID: 34030226 DOI: 10.1016/j.scitotenv.2021.146463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
A powerful simple biochar catalyst derived from nanocellulose was applied to the catalytic upcycling of waste plastics into H2 and liquid fuels for the first time. For the results from model low-density polyethylene (LDPE) pyrolysis, the C8-C16 aliphatics and monocyclic aromatics were dominant constitutes of the liquid product with the yields ranging from 22 to 68 wt%. At the temperature of 500 °C and biochar to LDPE ratio surpassing 3, the LDPE could be completely degraded into liquid and gas without wax production. A wax yield of 16 wt% was observed at the temperature of 450 °C and biochar to LDPE ratio of 4, which was dramatically lower than that (77 wt%) from the absence of biochar at the temperature of 500 °C. Up to 92 vol% of H2 was detected in the gaseous product with a yield of 36 wt%. The lower temperatures and higher biochar to LDPE ratios favored increasing the generation of H2 at the expense of light gas CnHm especially CH4. Moreover, this biochar catalyst was tested effectively to convert the real waste plastics including grocery bags and packaging tray into valuable liquid and H2-enriched gas.
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Affiliation(s)
- Chenxi Wang
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Hanwu Lei
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA.
| | - Xiao Kong
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Rongge Zou
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Moriko Qian
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Yunfeng Zhao
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Wendy Mateo
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
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Taoufik N, Boumya W, Achak M, Sillanpää M, Barka N. Comparative overview of advanced oxidation processes and biological approaches for the removal pharmaceuticals. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 288:112404. [PMID: 33780817 DOI: 10.1016/j.jenvman.2021.112404] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 02/26/2021] [Accepted: 03/13/2021] [Indexed: 05/12/2023]
Abstract
Nowadays, pharmaceuticals are the center of significant environmental research due to their complex and highly stable bioactivity, increasing concentration in the water streams and high persistence in aquatic environments. Conventional wastewater treatment techniques are generally inadequate to remove these pollutants. Aiming to tackle this issue effectively, various methods have been developed and investigated on the light of chemical, physical and biological procedures. Increasing attention has recently been paid to the advanced oxidation processes (AOPs) as efficient methods for the complete mineralization of pharmaceuticals. Their high operating costs compared to other processes, however, remain a challenge. Hence, this review summarizes the current and state of art related to AOPs, biological treatment and their effective exploitation for the degradation of various pharmaceuticals and other emerging molecules present in wastewater. The review covers the last decade with a particular focus on the previous five years. It is further envisioned that this review of advanced oxidation methods and biological treatments, discussed herein, will help readers to better understand the mechanisms and limitations of these methods for the removal of pharmaceuticals from the environment. In addition, we compared AOPs and biological treatments for the disposal of pharmaceuticals from the point of view of cost, effectiveness, and popularity of their use. The exploitation of coupling AOPs and biological procedures for the degradation of pharmaceuticals in wastewater was also presented. It is worthy of note that an integrated AOPs/biological system is essential to reach the complete degradation of pharmaceuticals; other advantages of this hybrid technique involve low energy cost, an efficient degradation process and generation of non-toxic by-products.
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Affiliation(s)
- Nawal Taoufik
- Sultan Moulay Slimane University of Beni Mellal, Research Group in Environmental Sciences and Applied Materials (SEMA), FP Khouribga, Morocco.
| | - Wafaa Boumya
- Sultan Moulay Slimane University of Beni Mellal, Research Group in Environmental Sciences and Applied Materials (SEMA), FP Khouribga, Morocco
| | - Mounia Achak
- Science Engineer Laboratory for Energy, National School of Applied Sciences, Chouaïb Doukkali University, El Jadida, Morocco; Chemical & Biochemical Sciences, Green Process Engineering, CBS, Mohammed VI Polytechnic University, Ben Guerir, Morocco
| | - Mika Sillanpää
- Institute of Research and Development, Duy Tan University, Da Nang, 550000, Viet Nam; Faculty of Environment and Chemical Engineering, Duy Tan University, Da Nang, 550000, Viet Nam; Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein, 2028, South Africa
| | - Noureddine Barka
- Sultan Moulay Slimane University of Beni Mellal, Research Group in Environmental Sciences and Applied Materials (SEMA), FP Khouribga, Morocco.
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Mohammadi F, Moradi S, Azimi N, Ebrahimi E. Optimisation of biodiesel production from Eisenia fetida earthworms oil using the transesterification method. Chem Ind 2021. [DOI: 10.1080/00194506.2021.1930590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Faezeh Mohammadi
- Department of Chemical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - Salar Moradi
- Department of Chemical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - Neda Azimi
- Department of Chemical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - Ebrahim Ebrahimi
- Department of Mechanical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
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12
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Patidar R, Srivastava VC. Evaluation of the sono-assisted photolysis method for the mineralization of toxic pollutants. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117903] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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13
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Xie M, Li Y, Xu L, Zhang S, Ye H, Sun F, Mei R, Su X. Optimization of bacterial cytokine protein production by response surface methodology for environmental bioremediation. RSC Adv 2021; 11:36105-36115. [PMID: 35492803 PMCID: PMC9043431 DOI: 10.1039/d1ra03565g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 10/12/2021] [Indexed: 11/21/2022] Open
Abstract
In natural and engineered systems, most microorganisms would enter a state of dormancy termed as “viable but non-culturable” (VBNC) state when they are exposed to unpredictable environmental stress. One of the major advances in resuscitating from such a state is the discovery of a kind of bacterial cytokine protein called resuscitation-promoting factor (Rpf), which is secreted from Micrococcus luteus. In this study, the optimization of Rpf production was investigated by the response surface methodology (RSM). Results showed that an empirical quadratic model well predicted the Rpf yield, and the highest Rpf protein yield could be obtained at the optimal conditions of 59.56 mg L−1 IPTG, cell density 0.69, induction temperature 20.82 °C and culture time 7.72 h. Importantly, Phyre2 web portal characterized the structure of the Rpf domain to have a shared homology with lysozymes, and the highest lysozyme activity was at pH 5 and 50 °C. This study broadens the knowledge of Rpf production and provided potential strategies to apply Rpf as a bioactivator for environmental bioremediation. A group of secreted proteins from M. luteus, recognized as resuscitation promoting factors (Rpf) can resuscitate the viable but non-culturable (VBNC) state bacteria which have the potential function of environmental bioremediation.![]()
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Affiliation(s)
- Mengqi Xie
- College of Geography and Environmental Science, Zhejiang Normal University, Yingbin Road 688#, Jinhua 321004, China
| | - Yilin Li
- College of Geography and Environmental Science, Zhejiang Normal University, Yingbin Road 688#, Jinhua 321004, China
| | - Luning Xu
- College of Geography and Environmental Science, Zhejiang Normal University, Yingbin Road 688#, Jinhua 321004, China
| | - Shusheng Zhang
- The Management Center of Wuyanling National Natural Reserve in Zhejiang, Wenzhou 325500, China
| | - Hongyu Ye
- Eco-Environmental Science Design & Research Institute of Zhejiang Province, Hangzhou 310007, China
| | - Faqian Sun
- College of Geography and Environmental Science, Zhejiang Normal University, Yingbin Road 688#, Jinhua 321004, China
| | - Rongwu Mei
- Eco-Environmental Science Design & Research Institute of Zhejiang Province, Hangzhou 310007, China
| | - Xiaomei Su
- College of Geography and Environmental Science, Zhejiang Normal University, Yingbin Road 688#, Jinhua 321004, China
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14
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Wang C, Lei H, Zhao Y, Qian M, Kong X, Mateo W, Zou R, Ruan R. Integrated harvest of phenolic monomers and hydrogen through catalytic pyrolysis of biomass over nanocellulose derived biochar catalyst. BIORESOURCE TECHNOLOGY 2021; 320:124352. [PMID: 33166882 DOI: 10.1016/j.biortech.2020.124352] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 06/11/2023]
Abstract
The remarkable enhancement of phenolic monomer generation and hydrogen was achieved through catalytic pyrolysis of Douglas fir over nanocellulose derived biochar catalyst for the first time. The main compositions of produced bio-oil were phenolic monomers, furans, and naphthalenes, etc., in which the phenolic monomers were dominant compositions. And at the temperature of 650 °C and 3 of biochar to biomass ratio, the quantification results showed that the concentration of phenol was increased to 53.77 mg/mL from 15.76 mg/mL of free of biochar catalyst. The concentration of cresols were facilitated to 44.51 mg/mL from 20.95 mg/mL, while the concentration of dimethylphenols reduced to 7.76 mg/mL from 9.11 mg/mL. Up to 85.32 vol% of hydrogen was observed, increasing from 45.53 vol% of the non-catalytic process. After 15 cycles of reuse, biochar catalysts still favored to produce a much higher concentration of phenolic monomers and hydrogen than that of absence of biochar catalysts.
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Affiliation(s)
- Chenxi Wang
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Hanwu Lei
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA.
| | - Yunfeng Zhao
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Moriko Qian
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Xiao Kong
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Wendy Mateo
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Rongge Zou
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Roger Ruan
- Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA
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Gupta A, Garg A. Adsorption and oxidation of ciprofloxacin in a fixed bed column using activated sludge derived activated carbon. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 250:109474. [PMID: 31505384 DOI: 10.1016/j.jenvman.2019.109474] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 08/24/2019] [Accepted: 08/25/2019] [Indexed: 06/10/2023]
Abstract
In this study, the performance of activated sludge derived granular activated carbon (SGAC) was investigated for ciprofloxacin (CPX) removal from synthetic and simulated wastewaters in a fixed-bed adsorption column operated in continuous mode. The adsorbent was synthesized using chemical activation using ZnCl2 as activating agent. Its surface area and pore volume were found comparable to that of the commercial granular activated carbon (CGAC). The maximum saturation adsorption capacities for CPX were ~16 mg/g and ~14 mg/g, respectively, with SGAC column under identical operating conditions (CPX concentration = 50 mg/L, bed height = 4 cm and wastewater flow rate = 1.5 mL/min) for synthetic and simulated wastewaters. The presence of other organics reduced CPX adsorption capacity of SGAC. The breakthrough curve data for both wastewaters could be adequately fit in Thomas and Yoon-Nelson kinetic models. The addition of H2O2 in wastewater showed no considerable improvement in CPX removal. However, H2O2 oxidation of spent adsorbent exhibited better results compared to thermal treatment for adsorbent regeneration. The results showed that sewage sludge can be recycled as an efficient adsorbent for the removal of recalcitrant organic pollutants from wastewater.
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Affiliation(s)
- Anirudh Gupta
- Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Anurag Garg
- Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.
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Dinesh GK, Chakma S. Degradation kinetic study of cholesterol lowering statin drug using sono-hybrid techniques initiated by metal-free polymeric catalyst. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.04.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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17
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Jalali S, Rahimi M, Dashtian K, Ghaedi M, Mosleh S. One step integration of plasmonic Ag2CrO4/Ag/AgCl into HKUST-1-MOF as novel visible-light driven photocatalyst for highly efficient degradation of mixture dyes pollutants: Its photocatalytic mechanism and modeling. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.03.045] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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18
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Derakhshan Z, Ehrampoush MH, Mahvi AH, Dehghani M, Faramarzian M, Eslami H. A comparative study of hybrid membrane photobioreactor and membrane photobioreactor for simultaneous biological removal of atrazine and CNP from wastewater: A performance analysis and modeling. CHEMICAL ENGINEERING JOURNAL 2019. [DOI: 10.1016/j.cej.2018.08.155] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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19
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Aseev DG, Batoeva AA, Sizykh MR. Sono-Photocatalytic Degradation of 4-Clorophenol in Aqueous Solutions. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418090030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Eljaiek-Urzola M, Guardiola-Meza L, Ghafoori S, Mehrvar M. Treatment of mature landfill leachate using hybrid processes of hydrogen peroxide and adsorption in an activated carbon fixed bed column. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2018; 53:238-243. [PMID: 29172962 DOI: 10.1080/10934529.2017.1394709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, the treatment of mature landfill leachate is evaluated by oxidation with hydrogen peroxide (H2O2) combined with adsorption in a granular activated carbon (GAC) fixed bed column to determinate the increase in the biodegradability index, the reduction of chemical oxygen demand (COD) as well as the increase in the useful life of the GAC bed. The sample leachate from Loma de Los Cocos Landfill (Cartagena de Indias, Colombia) has a very low biodegradability ratio ranging from 0.034 to 0.048 that makes it difficult to meet the required water quality level according to the regulations. The COD removal is initially monitored in the H2O2 oxidation treatment process. The operating conditions such as pH, H2O2 dosage, and the reaction time are optimized in this process based on the percentage of COD removal. A maximum COD removal of 29.9% is achieved at an initial H2O2 concentration of 5000 mg L-1 with a pH of 8 and the reaction time of 60 min. The hybrid treatment by H2O2-GAC achieved 97.3% COD removal and 116% increase in the biodegradability ratio (from 0.072 to 0.134) while this ratio was increased by 6.5% with H2O2 alone. Moreover, the useful life of the GAC bed is increased from 45 min in the column fed with raw leachate to 170 min in the column fed with pretreated leachate and 5000 mg L-1 of H2O2 at pH of 8 that subsequently increased the activated carbon adsorption capacity. An adsorption model for leachate treated with H2O2 is also developed.
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Affiliation(s)
- Monica Eljaiek-Urzola
- a Department of Civil Engineering , University of Cartagena , Cartagena de Indias , Colombia
| | - Luis Guardiola-Meza
- a Department of Civil Engineering , University of Cartagena , Cartagena de Indias , Colombia
| | - Samira Ghafoori
- b Department of Petroleum Engineering , Australian College of Kuwait , Safat , Kuwait
| | - Mehrab Mehrvar
- c Department of Chemical Engineering , Ryerson University , Toronto , Ontario , Canada
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Chakma S, Praneeth S, Moholkar VS. Mechanistic investigations in sono-hybrid (ultrasound/Fe 2+/UVC) techniques of persulfate activation for degradation of Azorubine. ULTRASONICS SONOCHEMISTRY 2017; 38:652-663. [PMID: 27553195 DOI: 10.1016/j.ultsonch.2016.08.015] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 07/17/2016] [Accepted: 08/11/2016] [Indexed: 06/06/2023]
Abstract
Persulfate-based oxidation of recalcitrant pollutants has been investigated as an alternative to OH radical based advanced oxidation processes due to distinct merits such as greater stability and non-selective persistent reactivity of SO4- oxidant species. The present study has attempted to highlight mechanistic features of persulfate-based decolorization of textile dye (Azorubine) using sono-hybrid techniques of activation. Three activation techniques, viz. sonolysis, Fe2+ ions and UVC light and combinations thereof, have been examined. UVC is revealed to be the most efficient decolorization technique. The mechanism of sonolysis (i.e. thermal activation of persulfate in the bubble-bulk interfacial region) is revealed to be almost independent of the mechanism of UVC. Fe2+ activation is revealed to have an adverse interaction with UVC due to scavenging of sulfate radicals by Fe2+ ions. The best hybrid activation technique for persulfate-based degradation and mineralization of Azorubine is UVC+ultrasound. Due to independent mechanisms, degradation and mineralization of the dye obtained with simultaneous application of UVC and ultrasound is nearly equal to the sum of degradation and mineralization obtained using individual techniques.
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Affiliation(s)
- Sankar Chakma
- Department of Chemical Engineering, Indian Institute of Science Education and Research, Bhopal 462 066, Madhya Pradesh, India.
| | - Sai Praneeth
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli 620 015, Tamil Nadu, India
| | - Vijayanand S Moholkar
- Department of Chemical Engineering, Indian Institute of Technology, Guwahati 781 039, Assam, India.
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Salimi M, Esrafili A, Gholami M, Jonidi Jafari A, Rezaei Kalantary R, Farzadkia M, Kermani M, Sobhi HR. Contaminants of emerging concern: a review of new approach in AOP technologies. ENVIRONMENTAL MONITORING AND ASSESSMENT 2017; 189:414. [PMID: 28741247 DOI: 10.1007/s10661-017-6097-x] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 06/23/2017] [Indexed: 05/06/2023]
Abstract
The presence of contaminants of emerging concern (CECs) such as pharmaceuticals and personal care products (PPCPs), endocrine-disrupting compounds (EDCs), flame retardants (FRs), pesticides, and artificial sweeteners (ASWs) in the aquatic environments remains a major challenge to the environment and human health. In this review, the classification and occurrence of emerging contaminants in aquatic environments were discussed in detail. It is well documented that CECs are susceptible to poor removal during the conventional wastewater treatment plants, which introduce them back to the environment ranging from nanogram per liter (e.g., carbamazepine) up to milligram per liter (e.g., acesulfame) concentration level. Meanwhile, a deep insight into the application of advanced oxidation processes (AOPs) on mitigation of the CECs from aquatic environment was presented. In this regard, the utilization of various treatment technologies based on AOPs including ozonation, Fenton processes, sonochemical, and TiO2 heterogeneous photocatalysis was reviewed. Additionally, some innovations (e.g., visible light heterogeneous photocatalysis, electro-Fenton) concerning the AOPs and the combined utilization of AOPs (e.g., sono-Fenton) were documented.
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Affiliation(s)
- Maryam Salimi
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Esrafili
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
| | - Mitra Gholami
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Ahmad Jonidi Jafari
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Roshanak Rezaei Kalantary
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Mahdi Farzadkia
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Majid Kermani
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
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23
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Naderi KV, Bustillo-Lecompte CF, Mehrvar M, Abdekhodaie MJ. Combined UV-C/H 2O 2-VUV processes for the treatment of an actual slaughterhouse wastewater. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2017; 52:314-325. [PMID: 28277086 DOI: 10.1080/03601234.2017.1281650] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this study, a three-factor, three-level Box-Behnken design with response surface methodology were used to maximize the TOC removal and minimize the H2O2 residual in the effluent of the combined UV-C/H2O2-VUV system for the treatment of an actual slaughterhouse wastewater (SWW) collected from one of the meat processing plants in Ontario, Canada. The irradiation time and the initial concentrations of total organic carbon (TOCo) and hydrogen peroxide (H2O2o) were the three predictors, as independent variables, studied in the design of experiments. The multiple response approach was used to obtain desirability response surfaces at the optimum factor settings. Subsequently, the optimum conditions to achieve the maximum percentage TOC removal of 46.19% and minimum H2O2 residual of 1.05% were TOCo of 213 mg L-1, H2O2o of 450 mg L-1, and irradiation time of 9 min. The attained optimal operating conditions were validated with a complementary test. Consequently, the TOC removal of 45.68% and H2O2 residual of 1.03% were achieved experimentally, confirming the statistical model reliability. Three individual processes, VUV alone, VUV/H2O2, and UV-C/H2O2, were also evaluated to compare their performance for the treatment of the actual SWW using the optimum parameters obtained in combined UV-C/H2O2-VUV processes. Results confirmed that an adequate combination of the UV-C/H2O2-VUV processes is essential for an optimized TOC removal and H2O2 residual. Finally, respirometry analyses were also performed to evaluate the biodegradability of the SWW and the BOD removal efficiency of the combined UV-C/H2O2-VUV processes.
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Affiliation(s)
- Kambiz Vaezzadeh Naderi
- a Graduate Programs in Environmental Applied Science and Management , Ryerson University , Toronto , ON , Canada
| | | | - Mehrab Mehrvar
- b Department of Chemical Engineering , Ryerson University , Toronto , ON , Canada
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Mosleh S, Rahimi MR. Intensification of abamectin pesticide degradation using the combination of ultrasonic cavitation and visible-light driven photocatalytic process: Synergistic effect and optimization study. ULTRASONICS SONOCHEMISTRY 2017; 35:449-457. [PMID: 27810164 DOI: 10.1016/j.ultsonch.2016.10.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 10/23/2016] [Accepted: 10/24/2016] [Indexed: 06/06/2023]
Abstract
Degradation of abamectin pesticide was carried out using visible light driven Cu2(OH)PO4-HKUST-1 MOF photocatalyst through the sonophotocatalytic technique. Cu2(OH)PO4-HKUST-1 MOF as a visible-light driven photocatalyst, was synthesized and characterized by XRD, SEM, EDS and DRS. The direct bang gaps of HKUST-1 MOF and Cu2(OH)PO4-HKUST-1 MOF were estimated about 2.63 and 2.59eV, respectively, which reveals that these photocatalysts can be activated under blue light illumination. All sonophotodegradation experiments were performed using a continuous flow-loop reactor. The central composite design (CCD) methodology was applied for modeling, optimization and investigation of influence of operational parameters, i.e. irradiation time, pH, solution flow rate, oxygen flow rate, initial concentration and photocatalyst dosage on the sonophotocatalytic degradation of abamectin. The maximum degradation efficiency of 99.93% was found at optimal values as 20min, 4, 90mL/min, 0.2mL/min, 30mg/L and 0.4g/L, for irradiation time, pH, solution flow rate, oxygen flow rate, initial concentration and photocatalyst dosage, respectively. Evaluation of the synergism in the combination of ultrasonic and photocatalysis lead to a synergistic index of 2.19, which reveals that coupling of ultrasonic and photocatalysis has a greater efficiency than the sum of individual procedures for degradation of abamectin.
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Affiliation(s)
- Soleiman Mosleh
- Process Intensification Laboratory, Chemical Engineering Department, Yasouj University, Yasouj 75918-74831, Iran
| | - Mahmood Reza Rahimi
- Process Intensification Laboratory, Chemical Engineering Department, Yasouj University, Yasouj 75918-74831, Iran.
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Afonso-Olivares C, Montesdeoca-Esponda S, Sosa-Ferrera Z, Santana-Rodríguez JJ. Analytical tools employed to determine pharmaceutical compounds in wastewaters after application of advanced oxidation processes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:24476-24494. [PMID: 27488717 DOI: 10.1007/s11356-016-7325-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 07/25/2016] [Indexed: 06/06/2023]
Abstract
Today, the presence of contaminants in the environment is a topic of interest for society in general and for the scientific community in particular. A very large amount of different chemical substances reaches the environment after passing through wastewater treatment plants without being eliminated. This is due to the inefficiency of conventional removal processes and the lack of government regulations. The list of compounds entering treatment plants is gradually becoming longer and more varied because most of these compounds come from pharmaceuticals, hormones or personal care products, which are increasingly used by modern society. As a result of this increase in compound variety, to address these emerging pollutants, the development of new and more efficient removal technologies is needed. Different advanced oxidation processes (AOPs), especially photochemical AOPs, have been proposed as supplements to traditional treatments for the elimination of pollutants, showing significant advantages over the use of conventional methods alone. This work aims to review the analytical methodologies employed for the analysis of pharmaceutical compounds from wastewater in studies in which advanced oxidation processes are applied. Due to the low concentrations of these substances in wastewater, mass spectrometry detectors are usually chosen to meet the low detection limits and identification power required. Specifically, time-of-flight detectors are required to analyse the by-products.
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Affiliation(s)
- Cristina Afonso-Olivares
- Instituto Universitario de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain
| | - Sarah Montesdeoca-Esponda
- Instituto Universitario de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain
| | - Zoraida Sosa-Ferrera
- Instituto Universitario de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain
| | - José Juan Santana-Rodríguez
- Instituto Universitario de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain.
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Eslami A, Asadi A, Meserghani M, Bahrami H. Optimization of sonochemical degradation of amoxicillin by sulfate radicals in aqueous solution using response surface methodology (RSM). J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.07.096] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Mohajerani M, Mehrvar M, Ein-Mozaffari F. Degradation of aqueous methylene blue using an external loop airlift sonophotoreactor: Statistical analysis and optimization. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2016; 51:722-735. [PMID: 27128152 DOI: 10.1080/10934529.2016.1170438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Degradation and mineralization of aqueous methylene blue (MB) are investigated in a bench scale external loop airlift sonophotoreactor. A central composite design along with response surface methodology is employed to model and optimize the sonophotolytic process. A quadratic empirical expression between responses and independent variables (pH and initial concentrations of H2O2 and MB) is derived. The efficiencies of the system for the MB degradation after 10, 15, and 30 min, and total organic carbon reduction after 150 min are considered as responses. The analysis of variance performed high values for the coefficient of determination R(2) and adjusted R(2) for all four responses. Optimum values of process variables for the maximum degradation and mineralization efficiency are pH 6.6 and initial concentrations of H2O2 and MB are 1,280 and 10.56 mg/L, respectively. With optimal operating conditions, 99.93% and 55.32% MB removal (after 10 min) and TOC reduction (after 150 min) are achieved, respectively. Artificial neural networks are also used to model the experimental data. The respirometric study is conducted to compare the biodegradability of untreated and sonophotolytically pre-treated MB solutions at different reaction times. Pre-treated solutions at 180, 240, and 300 min performed higher biodegradability compared to those of untreated MB solutions.
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Affiliation(s)
- Masroor Mohajerani
- a Department of Chemical Engineering , Ryerson University , Toronto , Ontario , Canada
| | - Mehrab Mehrvar
- a Department of Chemical Engineering , Ryerson University , Toronto , Ontario , Canada
| | - Farhad Ein-Mozaffari
- a Department of Chemical Engineering , Ryerson University , Toronto , Ontario , Canada
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Rahimi S, Ayati B, Rezaee A. Kinetic modeling and determination role of sono/photo nanocatalyst-generated radical species on degradation of hydroquinone in aqueous solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:12185-12198. [PMID: 26971517 DOI: 10.1007/s11356-016-6408-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 03/02/2016] [Indexed: 06/05/2023]
Abstract
Experimental findings of sonophotocatalytic process were used in degradation of hydroquinone to assess kinetic modeling and determine the effect of various active radical species. First, the effects of three photocatalytic, sonocatalytic, and sonophotocatalytic processes were studied for hydroquinone removal to determine kinetic constants and calculate the activation energy of reactions, and then the selected process was evaluated to determine active radical species. The reactor was composed of two parts, one included ultrasonic probe (sonocatalytic part) with powers 22, 80, and 176 W and the second part was the location of UV lamp (photocatalytic part) with tubular flow and power 15 W. After three systems were examined and the efficient system was selected, the role of different active species such as hydroxyl radical (OH(·)), superoxide radical (O2 (·-)), hole (h(+)), electrons (e (-)), and single oxygen molecule ((1)O2) and contribution of each of them were determined in hydroquinone degradation. According to tests, the results of this study showed that sonophotocatalytic integrated method as selected system among three systems studied followed the first-order equation for hydroquinone degradation and active hydroxyl species with 45 % and electron and hole with 15 and 10 %, respectively, had the highest and lowest contributions to conversion of hydroquinone. The findings showed that dissolved oxygen increases the capability of active radical formation so that 28.2 % of hydroquinone removal was increased under aeration compared to without aeration. Also, removal efficiency decreased 62 % with N2 injection due to the withdrawal of oxygen from the sample. By adding 25 Mm of sodium azide (NaN3) to stock solution, 46.5 % reduction was developed because single oxygen ((1)O2) played the role of an active species. The advantages of integrated sonocatalytic and photocatalytic method are the generation of active radical species with more variety and ultimately the formation of higher amounts of powerful hydroxyl radical that increases degradation rates of refractory compounds and low-risk internal and final products. It has an appropriate performance in the degradation of refractory compounds by optimizing effective operational factors.
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Affiliation(s)
- Sajad Rahimi
- Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran
| | - Bita Ayati
- Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran.
| | - Abbas Rezaee
- Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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Chakma S, Moholkar VS. Mechanistic analysis of hybrid sono-photo-ferrioxalate system for decolorization of azo dye. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.11.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Chakma S, Das L, Moholkar VS. Dye decolorization with hybrid advanced oxidation processes comprising sonolysis/Fenton-like/photo-ferrioxalate systems: A mechanistic investigation. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.10.055] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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32
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Safari GH, Nasseri S, Mahvi AH, Yaghmaeian K, Nabizadeh R, Alimohammadi M. Optimization of sonochemical degradation of tetracycline in aqueous solution using sono-activated persulfate process. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING 2015; 13:76. [PMID: 26539297 PMCID: PMC4632479 DOI: 10.1186/s40201-015-0234-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Accepted: 10/19/2015] [Indexed: 12/07/2022]
Abstract
BACKGROUND In this study, a central composite design (CCD) was used for modeling and optimizing the operation parameters such as pH, initial tetracycline and persulfate concentration and reaction time on the tetracycline degradation using sono-activated persulfate process. The effect of temperature, degradation kinetics and mineralization, were also investigated. RESULTS The results from CCD indicated that a quadratic model was appropriate to fit the experimental data (p < 0.0001) and maximum degradation of 95.01 % was predicted at pH = 10, persulfate concentration = 4 mM, initial tetracycline concentration = 30.05 mg/L, and reaction time = 119.99 min. Analysis of response surface plots revealed a significant positive effect of pH, persulfate concentration and reaction time, a negative effect of tetracycline concentration. The degradation process followed the pseudo-first-order kinetic. The activation energy value of 32.01 kJ/mol was obtained for US/S2O8 (2-) process. Under the optimum condition, the removal efficiency of COD and TOC reached to 72.8 % and 59.7 %, respectively. The changes of UV-Vis spectra during the process was investigated. The possible degradation pathway of tetracycline based on loses of N-methyl, hydroxyl, and amino groups was proposed. CONCLUSIONS This study indicated that sono-activated persulfate process was found to be a promising method for the degradation of tetracycline.
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Affiliation(s)
- Gholam Hossein Safari
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Simin Nasseri
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran ; Center for Water Quality Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Hossein Mahvi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran ; Center for Solid Waste Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Kamyar Yaghmaeian
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran ; Center for Solid Waste Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Ramin Nabizadeh
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran ; Center for Air Pollution Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahmood Alimohammadi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
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