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Aouni SI, Ghodbane H, Merouani S, Lakikza I, Boublia A, Yadav KK, Djelloul C, Albakri GS, Elboughdiri N, Benguerba Y. Removal enhancement of persistent basic fuchsin dye from wastewater using an eco-friendly, cost-effective Fenton process with sodium percarbonate and waste iron catalyst. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:43673-43686. [PMID: 38904874 DOI: 10.1007/s11356-024-33845-2] [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: 02/19/2024] [Accepted: 05/24/2024] [Indexed: 06/22/2024]
Abstract
In this comprehensive investigation, we evaluate the efficacy of the Fenton process in degrading basic fuchsin (BF), a resistant dye. Our primary focus is on the utilization of readily available, environmentally benign, and cost-effective reagents for the degradation process. Furthermore, we delve into various operational parameters, including the quantity of sodium percarbonate (SPC), pH levels, and the dimensions of waste iron bars, to optimize the treatment efficiency. In the course of our research, we employed an initial SPC concentration of 0.5 mM, a pH level of 3, a waste iron bar measuring 3.5 cm in length and 0.4 cm in diameter, and a processing time of 10 min. Our findings reveal the successful elimination of the BF dye, even when subjected to treatment with diverse salts and surfactants under elevated temperatures and acidic conditions (pH below 3). This underscores the robustness of the Fenton process in purifying wastewater contaminated with dye compounds. The outcomes of our study not only demonstrate the efficiency of the Fenton process but highlight its adaptability to address dye contamination challenges across various industries. Critically, this research pioneers the application of waste iron bars as a source of iron in the Fenton reaction, introducing a novel, sustainable approach that enhances the environmental and economic viability of the process. This innovative use of recycled materials as catalysts represents a significant advancement in sustainable chemical engineering practices.
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Affiliation(s)
- Saoussen Imene Aouni
- Laboratory of Physics for Matter and Radiation, Mohamed Cherif Messadia-Souk Ahras University, P.O. Box 1553, 41000, Souk Ahras, Algeria
| | - Houria Ghodbane
- Laboratory of Physics for Matter and Radiation, Mohamed Cherif Messadia-Souk Ahras University, P.O. Box 1553, 41000, Souk Ahras, Algeria
| | - Slimane Merouani
- Laboratory of Environmental Process Engineering, Department of Chemical Engineering, Faculty of Process Engineering, University Salah Boubnider-Constantine 3, P.O. Box 72, 25000, Constantine, Algeria
| | - Imane Lakikza
- Laboratory of Physics for Matter and Radiation, Mohamed Cherif Messadia-Souk Ahras University, P.O. Box 1553, 41000, Souk Ahras, Algeria
| | - Abir Boublia
- Laboratoire de Physico-Chimie des Hauts Polymères (LPCHP), Département de Génie des Procédés, Faculté de Technologie, Université Ferhat ABBAS Sétif-1, 19000, Sétif, Algeria
| | - Krishna Kumar Yadav
- Faculty of Science and Technology, Madhyanchal Professional University, Ratibad, Bhopal, 462044, India
- Environmental and Atmospheric Sciences Research Group, Scientific Research Center, Al-Ayen University, Thi-Qar, Nasiriyah, 64001, Iraq
| | - Chawki Djelloul
- Laboratory of Reaction Engineering, Faculty of Mechanical Engineering and Process Engineering, USTHB, Algiers, Algeria
| | - Ghadah Shukri Albakri
- Department of Teaching and Learning, College of Education and Human Development, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Noureddine Elboughdiri
- Chemical Engineering Department, College of Engineering, University of Ha'il, Ha'il, 81441, Saudi Arabia
- Chemical Engineering Process Department, National School of Engineers Gabes, University of Gabes, 6029, Gabes, Tunisia
| | - Yacine Benguerba
- Laboratoire de Biopharmacie Et Pharmacotechnie (LBPT), Ferhat Abbas Setif 1 University, Setif, Algeria.
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Xu S, Yang Y, Li F. Heterogeneous electro-Fenton removal of polyacrylamide in aqueous solution over CoFe 2O 4 catalyst. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2024; 89:3309-3324. [PMID: 39150426 DOI: 10.2166/wst.2024.180] [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: 03/31/2024] [Accepted: 05/22/2024] [Indexed: 08/17/2024]
Abstract
Polyacrylamide (PAM) in environmental water has become a major problem in water pollution management due to its high molecular mass, high viscosity and non-absorption by soil. CoFe2O4 with strong magnetic properties was prepared by solvent-thermal synthesis method and used as the catalyst for the removal on PAM in heterogeneous Electro-Fenton (EF) system. It showed that the removal efficiency of PAM by the heterogeneous EF system using CoFe2O4 catalyst was 92.01% at pH 3 after 120 min. Further studies indicated that ·OH was the most significant active species for the removal of PAM, and the contribution of ·O2- and SO4·- for the removal of PAM was less than 15%. The reusability test and XRD, XPS, FTIR analyses proved that the catalyst had good stability. After a repeated use for five times, the catalyst still had a high PAM removal rate and stable structure. The valence distribution and functional groups of the phase components of the catalyst did not change significantly before and after the reaction. The possible mechanism of catalyst activation of H2O2 was deduced by mechanism investigation. The CoFe2O4 is an efficient and promising catalyst for the removal of PAM wastewater.
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Affiliation(s)
- Shanshan Xu
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, Hubei, China
| | - Yi Yang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, Hubei, China
| | - Fanxiu Li
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, Hubei, China E-mail:
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Vural C, Ettadili H. Biodegradation of phthalic acid and terephthalic acid by Comamonas testosteroni strains. Folia Microbiol (Praha) 2024:10.1007/s12223-024-01176-x. [PMID: 38809402 DOI: 10.1007/s12223-024-01176-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 05/20/2024] [Indexed: 05/30/2024]
Abstract
Phthalic acid isomers are the monomers of phthalate molecules, also known as phthalic acid esters, widely employed in the plastics industry. This study aims to investigate the biodegradation of phthalic acid (PA) and terephthalic acid (TPA) by five industry-borne Comamonas testosteroni strains: 3APTOL, 3ABBK, 2B, 3A1, and C8. To assess the ability of C. testosteroni strains to biodegrade phthalic acid isomers in fermentation media, an analytical method was employed, consisting of high-performance liquid chromatography (HPLC) analyses. Subsequently, molecular screening of the genomic and plasmid DNA was conducted to identify the degradative genes responsible for the breakdown of these chemicals. The genes of interest, including ophA2, tphA2, tphA3, pmdA, and pmdB, were screened by real-time PCR. The five C. testosteroni strains effectively degraded 100% of 100 mg/L PA (p = 0.033) and TPA (p = 0.0114). Molecular analyses indicated that all C. testosteroni strains contained the pertinent genes at different levels within their genomes and plasmids, as reflected in the threshold cycle (Ct) values. Additionally, DNA temperature of melting (Tm) analyses uncovered minor differences between groups of genes in genomic and plasmid DNA. C. testosteroni strains could be excellent candidates for the removal of phthalic acid isomers from environmental systems.
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Affiliation(s)
- Caner Vural
- Department of Biology, Molecular Biology Section, Pamukkale University, 20160, Denizli, Turkey.
| | - Hamza Ettadili
- Department of Biology, Molecular Biology Section, Pamukkale University, 20160, Denizli, Turkey
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Peng Q, Lü X, Ou J, Zhou Y, Xu T, Hu B, Yu G, Zhu C, Xie Z. Study on removal of phosphorus and COD in wastewater by sinusoidal AC Fenton oxidation-coagulation. ENVIRONMENTAL TECHNOLOGY 2023; 44:3382-3392. [PMID: 35332842 DOI: 10.1080/09593330.2022.2058423] [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: 11/24/2021] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Abstract
In order to treat domestic wastewater containing phosphorus and chemical oxygen demand (COD), the new technology of Sinusoidal Alternating Current (AC) Fenton Oxidation-Coagulation (SACFOC) was used to improve the removal efficiency (Re) and reduce energy consumption (EEC). The morphology, elemental composition, crystal structure and functional groups of the sludge were characterised by Scanning Electron Microscope (SEM), Energy-dispersive X-ray Spectroscopy (EDS), X-ray diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR). The results show that total phosphorus removal efficiency {Re(TP)} and removal efficiency of organic matter {Re(COD)} can reach 97.56% and 87.77%, respectively, but EEC is only 0.09 kWh·m-3 under the optimum conditions of pH0 = 3, current density (j) = 0.5 A·m-2, c0(TP) = 18 mg·dm-3, c0(COD) = 300 mg·dm-3, c0(H2O2) = 0.06 mol·dm-3, t = 45 min. As compared with direct current (DC) Fenton Oxidation-Coagulation (DCFOC), the COD removal efficiency of SACFOC treatment was improved by 37%, but the energy consumption was reduced by 45%. The degradation process of total phosphorus and COD by SACFOC abides by the quasi-first-order kinetic model. The process of SACFOC includes double effects of electrocoagulation of iron sol by electrolysis and degrade COD by oxidation of formed hydroxyl radicals (·OH) in wastewater, which improves removal efficiency of total phosphorus and COD in wastewater. Our research findings will provide technical guidance and a theoretical basis for the simultaneous treatment of wastewater containing phosphorus and COD applying SACFOC process.
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Affiliation(s)
- Qingjuan Peng
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, People's Republic of China
| | - Xiaoliu Lü
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, People's Republic of China
| | - Jinhua Ou
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, People's Republic of China
- Department of Materials and Chemical Engineering, Hunan Institute of Technology, Hengyang, People's Republic of China
| | - Yihui Zhou
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, People's Republic of China
| | - Tao Xu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, People's Republic of China
| | - Bonian Hu
- Department of Materials and Chemical Engineering, Hunan Institute of Technology, Hengyang, People's Republic of China
| | - Gang Yu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, People's Republic of China
| | - Chunyou Zhu
- Aerospace kaitian Environmental Technology Co., Ltd, Changsha, People's Republic of China
| | - Zhihui Xie
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong, People's Republic of China
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Mahesh N, Shyamalagowri S, Pavithra MKS, Alodhayb A, Alarifi N, Aravind J, Kamaraj M, Balakumar S. Viable remediation techniques to cleansing wastewaters comprising endocrine-disrupting compounds. ENVIRONMENTAL RESEARCH 2023; 231:116245. [PMID: 37245568 DOI: 10.1016/j.envres.2023.116245] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/16/2023] [Accepted: 05/26/2023] [Indexed: 05/30/2023]
Abstract
Endocrine-disrupting chemicals (EDCs) have recently gained prominence as emerging pollutants due to their significant negative impacts on diverse living forms in ecosystems, including humans, by altering their endocrine systems. EDCs are a prominent category of emerging contaminants in various aquatic settings. Given the growing population and limited access to freshwater resources, their expulsion from aquatic systems is also a severe issue. EDC removal from wastewater depends on the physicochemical properties of the specific EDCs found in each wastewater type and various aquatic environments. Due to these components' chemical, physical, and physicochemical diversity, various approaches based on physical, biological, electrochemical, and chemical procedures have been developed to eliminate them. The objective of this review is to provide the comprehensive overview by selecting recent approaches that showed significant impact on the best available methods for removing EDCs from various aquatic matrices. It is suggested that adsorption by carbon-based materials or bioresources is effective at higher EDC concentrations. Electrochemical mechanization works, but it requires expensive electrodes, continual energy, and chemicals. Due to the lack of chemicals and hazardous byproducts, adsorption and biodegradation are considered environmentally friendly. When combined with synthetic biology and an AI system, biodegradation can efficiently remove EDCs and replace conventional water treatment technologies in the near future. Hybrid in-house methods may reduce EDCs best, depending on the EDC and resources.
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Affiliation(s)
- Narayanan Mahesh
- Department of Chemistry and Biosciences, Srinivasa Ramanujan Centre, SASTRA Deemed to Be University, Kumbakonam, 612001, Tamil Nadu, India
| | - S Shyamalagowri
- P.G. and Research Department of Botany, Pachaiyappas College, Chennai, 600030, Tamil Nadu, India
| | - M K S Pavithra
- Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, 638401, Tamil Nadu, India
| | - Abdullah Alodhayb
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Nahed Alarifi
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - J Aravind
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha Nagar, Thandalam, Chennai, 602105, Tamil Nadu, India
| | - M Kamaraj
- Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology -Ramapuram Campus, Chennai, 600089, Tamil Nadu, India.
| | - Srinivasan Balakumar
- Department of Chemistry and Biosciences, Srinivasa Ramanujan Centre, SASTRA Deemed to Be University, Kumbakonam, 612001, Tamil Nadu, India.
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Yakamercan E, Bhatt P, Aygun A, Adesope AW, Simsek H. Comprehensive understanding of electrochemical treatment systems combined with biological processes for wastewater remediation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 330:121680. [PMID: 37149253 DOI: 10.1016/j.envpol.2023.121680] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 03/17/2023] [Accepted: 04/19/2023] [Indexed: 05/08/2023]
Abstract
The presence of toxic pollutants in wastewater discharge can affect the environment negatively due to presence of the organic and inorganic contaminants. The application of the electrochemical process in wastewater treatment is promising, specifically in treating these harmful pollutants from the aquatic environment. This review focused on recent applications of the electrochemical process for the remediation of such harmful pollutants from aquatic environments. Furthermore, the process conditions that affect the electrochemical process performance are evaluated, and the appropriate treatment processes are suggested according to the presence of organic and inorganic contaminants. Electrocoagulation, electrooxidation, and electro-Fenton applications in wastewater have shown effective performance with high removal rates. The disadvantages of these processes are the formation of toxic intermediate metabolites, high energy consumption, and sludge generation. To overcome such disadvantages combined ecotechnologies can be applied in large-scale wastewater pollutants removal. The combination of electrochemical and biological treatment has gained importance, increased removal performance remarkably, and decreased operational costs. The critical discussion with depth information in this review could be beneficial for wastewater treatment plant operators throughout the world.
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Affiliation(s)
- Elif Yakamercan
- Department Environmental Engineering Department, Bursa Technical University, Bursa, Turkiye
| | - Pankaj Bhatt
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette, IN, 47906, USA
| | - Ahmet Aygun
- Department Environmental Engineering Department, Bursa Technical University, Bursa, Turkiye
| | - Adedolapo W Adesope
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette, IN, 47906, USA
| | - Halis Simsek
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette, IN, 47906, USA.
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7
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Kumari M, Pulimi M. Phthalate esters: occurrence, toxicity, bioremediation, and advanced oxidation processes. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 87:2090-2115. [PMID: 37186617 PMCID: wst_2023_119 DOI: 10.2166/wst.2023.119] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Phthalic acid esters are emerging pollutants, commonly used as plasticizers that are categorized as hazardous endocrine-disrupting chemicals (EDCs). A rise in anthropogenic activities leads to an increase in phthalate concentration in the environment which leads to various adverse environmental effects and health issues in humans and other aquatic organisms. This paper gives an overview of the research related to phthalate ester contamination and degradation methods by conducting a bibliometric analysis with VOS Viewer. Ecotoxicity analysis requires an understanding of the current status of phthalate pollution, health impacts, exposure routes, and their sources. This review covers five toxic phthalates, occurrences in the aquatic environment, toxicity studies, biodegradation studies, and degradation pathways. It highlights the various advanced oxidation processes like photocatalysis, Fenton processes, ozonation, sonolysis, and modified AOPs used for phthalate removal from the environment.
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Affiliation(s)
- Madhu Kumari
- Centre of Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India E-mail:
| | - Mrudula Pulimi
- Centre of Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India E-mail:
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8
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Song Y, Wang A, Ren S, Zhang Y, Zhang Z. Flow-through heterogeneous electro-Fenton system using a bifunctional FeOCl/carbon cloth/activated carbon fiber cathode for efficient degradation of trimethoprim at neutral pH. ENVIRONMENTAL RESEARCH 2023; 222:115303. [PMID: 36642126 DOI: 10.1016/j.envres.2023.115303] [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: 12/06/2022] [Revised: 01/08/2023] [Accepted: 01/12/2023] [Indexed: 06/17/2023]
Abstract
The synthesis of multifunctional cathode with high-efficiency and stable catalytic activity for simultaneously producing and activating H2O2 is an effective way for promoting the performance of heterogeneous electro-Fenton process (HEF). In addition, accelerating mass transfer by adopting a flow-through reactor is also great importance because of its better utilization of catalysts and adequate contact of the contaminant with the oxidants generated on the electrode surface. Herein, a novel flow-through HEF (FHEF) system was designed for the degradation of trimethoprim (TMP) using bifunctional cathode with a sandwich structure FeOCl nanosheets loaded onto carbon cloth (CC) and activated carbon fiber (ACF) (FeOCl/CC/ACF). The cathode exhibited excellent performance in activating H2O2 for the in-situ generation of hydroxyl radicals (•OH). The electron spin resonance (ESR) measurements and radical quenching tests proved that the high production of •OH in the FHEF process was favorable to the high catalytic efficiency. 25 mg L-1 TMP was entirely degraded after 60 min, with the TOC removal of 62.6% (180 min) at pH 6.8, 9.0 mA cm-2, and flux rate 210 mL min-1. Moreover, the degradation rate still could reach 83% (60 min) after 10 cycles without obvious valence and crystal phase changes. Simultaneously, the current utilization rate has also been greatly enhanced, with an average current efficiency of 69.9% and a low energy consumption of 0.28 kWh kg-1. The reasonable degradation pathways for TMP were proposed based on the UPLC-QTOF-MS/MS results. Finally, the results of toxicological simulation showed a declining trend in the toxicity of the samples during TMP degradation. These results claim that the FeOCl/CC/ACF-FHEF system is an efficient and economical technology for the treatment of organic contaminants in effluents.
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Affiliation(s)
- Yongjun Song
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, China
| | - Aimin Wang
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, China.
| | - Songyu Ren
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, China
| | - Yanyu Zhang
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, China
| | - Zhongguo Zhang
- Institute of Resources and Environment, Beijing Academy of Science and Technology, China
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9
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Sahoo TP, Kumar MA. Remediation of phthalate acid esters from contaminated environment—Insights on the bioremedial approaches and future perspectives. Heliyon 2023; 9:e14945. [PMID: 37025882 PMCID: PMC10070671 DOI: 10.1016/j.heliyon.2023.e14945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 01/17/2023] [Accepted: 03/22/2023] [Indexed: 03/30/2023] Open
Abstract
Phthalates are well-known emerging pollutants that are toxic to the environment and human health. Phthalates are lipophilic chemicals used as plasticizers in many of the items for improving their material properties. These compounds are not chemically bound and are released to the surroundings directly. Phthalate acid esters (PAEs) are endocrine disruptors and can interfere with hormones, which can cause issues with development and reproduction, thus there is a huge concern over their existence in various ecological surroundings. The purpose of this review is to explore the occurrence, fate, and concentration of phthalates in various environmental matrices. This article also covers the phthalate degradation process, mechanism, and outcomes. Besides the conventional treatment technology, the paper also aims at the recent advancements in various physical, chemical, and biological approaches developed for phthalate degradation. In this paper, a special focus has been given on the diverse microbial entities and their bioremedial mechanisms executes the PAEs removal. Critically, the analyses method for determining intermediate products generated during phthalate biotransformation have been discussed. Concluisvely, the challenges, limitations, knowledge gaps and future opportunities of bioremediation and their significant role in ecology have also been highlighted.
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Shaker OA, Safwat SM, Matta ME. Nickel removal from wastewater using electrocoagulation process with zinc electrodes under various operating conditions: performance investigation, mechanism exploration, and cost analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:26650-26662. [PMID: 36369444 PMCID: PMC9995524 DOI: 10.1007/s11356-022-24101-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 11/04/2022] [Indexed: 06/16/2023]
Abstract
Economically feasible approaches are needed for wastewater treatment. Electrocoagulation (EC) is an electrochemical treatment method that removes various pollutants from wastewater. It has grown in popularity over conventional treatment methods, especially in industrial wastewater, due to its high performance and the ability to remove toxic compounds. However, it is crucial to reduce the costs associated with EC for widespread implementation. It is also important to decrease nickel (Ni) concentrations in wastewater to prevent potential health and environmental problems. Therefore, this study investigates Ni removal from synthetic and real wastewater using electrocoagulation. Zinc, as a novel electrode, was used as the sacrificial anode. Several operating conditions were assessed, including current density, initial pH, electrolysis time, and spacing between electrodes. The maximum Ni removal efficiency, after 90 min, reached 99.9% at a current density of 10 mA/cm2 when the pH was 9.2 and the gap distance was 4 cm. The Ni removal rate reached 94.4% and 94.9% at a 2- and 6-cm spacing, respectively, after 90 min. Anode morphology, kinetic modeling, electrical energy consumption, and cost analysis were also investigated. The type of corrosion was uniform, which is easily predicted compared to pitting corrosion. The comparison between chemical coagulation and electrocoagulation was also reported. Experimental results indicated that the maximum Ni removal rates reached 99.89% after 90 min. The optimum spacing between electrodes was 4 cm, and the optimum current density was 10 mA/cm2. Additionally, the kinetic data were best represented through the second-order Lagergren model. The results demonstrated that the electrocoagulation performance was better than that of chemical coagulation for Ni removal. The maximum electrical energy consumption was 23.79 KWh/m3 for Ni removal.
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Affiliation(s)
- Omar A Shaker
- Sanitary & Environmental Engineering Division, Public Works Department, Faculty of Engineering, Cairo University, Giza, 12316, Egypt
| | - Safwat M Safwat
- Sanitary & Environmental Engineering Division, Public Works Department, Faculty of Engineering, Cairo University, Giza, 12316, Egypt.
| | - Minerva E Matta
- Sanitary & Environmental Engineering Division, Public Works Department, Faculty of Engineering, Cairo University, Giza, 12316, Egypt
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11
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Chen W, Zhao X, Xu W, Hu Y, Hou R, Wang Z. Dimethyl phthalate inhibits the growth of Escherichia coli K-12 by regulating sugar transport and energy metabolism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:13702-13710. [PMID: 36136186 DOI: 10.1007/s11356-022-23083-9] [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: 04/12/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
Dimethyl phthalate (DMP) is one of the most widely used plasticizers, and it is easily released into the environment, posing a threat to microbes. In this study, the impact of DMP on the uptake and metabolism of sugars in E. coli K-12 was assessed using proteomics, computational simulation analysis, transcriptome analysis, and sugar utilization experiments. DMP contamination inhibited the growth of E. coli K-12 and downregulated the expression of proteins in ATP-binding cassette (ABC) transporters and the phosphotransferase (PTS) system of E. coli K-12, which are primarily involved in the transmembrane transport of sugars. DMP formed a stable complex with sugar transporters and changed the rigidity and stability of the proteins. Furthermore, DMP treatment decreased the utilization of L-arabinose, glucose, D-xylose, and maltose. Moreover, carbon metabolism and oxidative phosphorylation were also downregulated by DMP. Our study shows that DMP reduces the uptake of sugars and ATP production and subsequently inhibits the growth of E. coli K-12.
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Affiliation(s)
- Wenjing Chen
- School of Life Science and Agriculture Forestry, Qiqihar University, Qiqihar, 161006, Heilongjiang, China
- Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar, 161006, China
| | - Xiaosong Zhao
- School of Life Science and Agriculture Forestry, Qiqihar University, Qiqihar, 161006, Heilongjiang, China
- Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar, 161006, China
| | - Weihui Xu
- School of Life Science and Agriculture Forestry, Qiqihar University, Qiqihar, 161006, Heilongjiang, China
- Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar, 161006, China
| | - Yunlong Hu
- School of Life Science and Agriculture Forestry, Qiqihar University, Qiqihar, 161006, Heilongjiang, China
- Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar, 161006, China
| | - Ruixing Hou
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Zhigang Wang
- School of Life Science and Agriculture Forestry, Qiqihar University, Qiqihar, 161006, Heilongjiang, China.
- Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar, 161006, China.
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12
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Ateş H, Argun ME. Fate of phthalate esters in landfill leachate under subcritical and supercritical conditions and determination of transformation products. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 155:292-301. [PMID: 36410146 DOI: 10.1016/j.wasman.2022.11.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 10/16/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
The hypothesis of this study is that the complex organic load of landfill leachate could be reduced by supercritical water oxidation (SCWO) in a single stage, but this operation could lead to the formation of some undesired by-products of phthalate esters (PAEs). In this context, the fate of selected PAEs, butyl benzyl phthalate (BBP), di-2-ethylhexyl phthalate (DEHP) and di-n-octyl phthalate (DNOP), was investigated during the oxidation of leachate under subcritical and supercritical conditions. Experiments were conducted at various temperatures (250-500 °C), pressures (10-35 MPa), residence times (2-18 min) and dimensionless oxidant doses (DOD: 0.2-2.3). The SCWO process decreased the leachate's chemical oxygen demand (COD) from 34,400 mg/L to 1,120 mg/L (97%). Removal efficiencies of DEHP and DNOP with longer chains were higher than BBP. The DEHP, DNOP and BBP compounds were removed in the range of -35 to 100%, -18 to 92%, and 28 to 36%, respectively, by the SCWO process. Many non-target PAEs were qualitatively detected in the raw leachate apart from the selected PAEs. Besides, 97% of total PAEs including both target and non-target PAEs was mineralized at 15 MPa, 300 °C and 5 min. Although PAEs were highly mineralized during SCWO of the leachate, aldehyde, ester, amide and amine-based phthalic substances were frequently detected as by-products. These by-products have transformed into higher molecular weight by-products with binding reactions as a result of complex SCWO process chemistry. It has also been determined that some non-target PAEs such as 1,2-benzenedicarboxylic acid bis(2-methylpropyl)ester and bis(2-ethylhexyl) isophthalate can transform to the DEHP. Therefore, the suggested pathway in this study for PAEs degradation during the SCWO of the leachate includes substitution and binding reactions as well as an oxidation reaction.
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Affiliation(s)
- Havva Ateş
- Konya Technical University, Faculty of Engineering and Natural Science, Department of Environmental Engineering, Türkiye.
| | - Mehmet Emin Argun
- Konya Technical University, Faculty of Engineering and Natural Science, Department of Environmental Engineering, Türkiye.
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Haider FU, Wang X, Zulfiqar U, Farooq M, Hussain S, Mehmood T, Naveed M, Li Y, Liqun C, Saeed Q, Ahmad I, Mustafa A. Biochar application for remediation of organic toxic pollutants in contaminated soils; An update. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 248:114322. [PMID: 36455351 DOI: 10.1016/j.ecoenv.2022.114322] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 10/15/2022] [Accepted: 11/20/2022] [Indexed: 06/17/2023]
Abstract
Bioremediation of organic contaminants has become a major environmental concern in the last few years, due to its bio-resistance and potential to accumulate in the environment. The use of diverse technologies, involving chemical and physical principles, and passive uptake utilizing sorption using ecofriendly substrates have drawn a lot of interest. Biochar has got attention mainly due to its simplicity of manufacturing, treatment, and disposal, as it is a less expensive and more efficient material, and has a lot of potential for the remediation of organic contaminants. This review highlighted the adverse impact of persistent organic pollutants on the environment and soil biota. The utilization of biochar to remediate soil and contaminated compounds i.e., pesticides, polycyclic aromatic hydrocarbons, antibiotics, and organic dyes has also been discussed. The soil application of biochar has a significant impact on the biodegradation, leaching, and sorption/desorption of organic contaminants. The sorption/desorption of organic contaminants is influenced by chemical composition and structure, porosity, surface area, pH, and elemental ratios, and surface functional groups of biochar. All the above biochar characteristics depend on the type of feedstock and pyrolysis conditions. However, the concentration and nature of organic pollutants significantly alters the sorption capability of biochar. Therefore, the physicochemical properties of biochar and soils/wastewater, and the nature of organic contaminants, should be evaluated before biochar application to soil and wastewater. Future initiatives, however, are needed to develop biochars with better adsorption capacity, and long-term sustainability for use in the xenobiotic/organic contaminant remediation strategy.
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Affiliation(s)
- Fasih Ullah Haider
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China
| | - Xiukang Wang
- College of Life Sciences, Yan'an University, Yan'an 716000, China.
| | - Usman Zulfiqar
- Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Muhammad Farooq
- Department of Plant Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Al-Khoud 123, Oman
| | - Saddam Hussain
- Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Tariq Mehmood
- College of Environment, Hohai University, Nanjing, China
| | - Muhammad Naveed
- Institute of Soil and Environmental Science, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Yuelin Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
| | - Cai Liqun
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China.
| | - Qudsia Saeed
- Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Brno, Czechia
| | - Ishtiaq Ahmad
- Department of Horticultural Sciences, The Islamia University of Bahawalpur, 63100, Pakistan
| | - Adnan Mustafa
- Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Brno, Czechia; Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia; Institute for Environmental Studies, Faculty of Science, Charles University in Prague, Prague, Czechia
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14
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Karbassiyazdi E, Fattahi F, Yousefi N, Tahmassebi A, Taromi AA, Manzari JZ, Gandomi AH, Altaee A, Razmjou A. XGBoost model as an efficient machine learning approach for PFAS removal: Effects of material characteristics and operation conditions. ENVIRONMENTAL RESEARCH 2022; 215:114286. [PMID: 36096170 DOI: 10.1016/j.envres.2022.114286] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 08/19/2022] [Accepted: 09/03/2022] [Indexed: 06/15/2023]
Abstract
Due to the implications of poly- and perfluoroalkyl substances (PFAS) on the environment and public health, great attention has been recently made to finding innovative materials and methods for PFAS removal. In this work, PFAS is considered universal contamination which can be found in many wastewater streams. Conventional materials and processes used to remove and degrade PFAS do not have enough competence to address the issue particularly when it comes to eliminating short-chain PFAS. This is mainly due to the large number of complex parameters that are involved in both material and process designs. Here, we took the advantage of artificial intelligence to introduce a model (XGBoost) in which material and process factors are considered simultaneously. This research applies a machine learning approach using data collected from reported articles to predict the PFAS removal factors. The XGBoost modeling provided accurate adsorption capacity, equilibrium, and removal estimates with the ability to predict the adsorption mechanisms. The performance comparison of adsorbents and the role of AI in one dominant are studied and reviewed for the first time, even though many studies have been carried out to develop PFAS removal through various adsorption methods such as ion exchange, nanofiltration, and activated carbon (AC). The model showed that pH is the most effective parameter to predict PFAS removal. The proposed model in this work can be extended for other micropollutants and can be used as a basic framework for future adsorbent design and process optimization.
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Affiliation(s)
- Elika Karbassiyazdi
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Australia
| | - Fatemeh Fattahi
- Department of Chemical Engineering, Isfahan University of Technology, Isfahan, Iran
| | - Negin Yousefi
- Department of Chemical Engineering, Isfahan University of Technology, Isfahan, Iran
| | | | - Arsia Afshar Taromi
- Petrochemicals Department, Iran Polymer and Petrochemical Institute, P.O. Box 14965/115, Tehran, Iran
| | - Javad Zyaie Manzari
- Department of Chemical Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Amir H Gandomi
- Faculty of Engineering & Information Technology, University of Technology Sydney, Ultimo, NSW 2007, Australia.
| | - Ali Altaee
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Australia
| | - Amir Razmjou
- School of Engineering, Edith Cowan University, Joondalup, Perth, WA, 6027, Australia; UNESCO Centre for Membrane Science and Technology, School of Chemical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia.
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15
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Cauduro GP, Marmitt M, Ferraz M, Arend SN, Kern G, Modolo RCE, Leal AL, Valiati VH. Burkholderia vietnamiensis G4 as a biological agent in bioremediation processes of polycyclic aromatic hydrocarbons in sludge farms. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 195:116. [PMID: 36394643 DOI: 10.1007/s10661-022-10733-1] [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: 01/25/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are one of the main pollutants generated by the refining and use of oil. To search bioremediation alternatives for these compounds, mainly in situ, considering the biotic and abiotic variables that affect the contaminated sites is determinant for the success of bioremediation techniques. In this study, bioremediation strategies were evaluated in situ, including biostimulation and bioaugmentation for 16 priority PAHs present in activated sludge farms. B. vietnamiensis G4 was used as a biodegradation agent for bioaugmentation tests. The analyses occurred for 12 months, and temperature and humidity were measured to verify the effects of these factors on the biodegradation. We used the technique GC-MS to evaluate and quantify the degradation of PAHs over the time of the experiment. Of the four treatments applied, bioaugmentation with quarterly application proved to be the best strategy, showing the degradation of compounds of high (34.4% annual average) and low (21.9% annual average) molecular weight. A high degradation rate for high molecular weight compounds demonstrates that this technique can be successfully applied in bioremediation of areas with compounds considered toxic and stable in nature, contributing to the mitigation of impacts generated by PAHs.
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Affiliation(s)
- Guilherme Pinto Cauduro
- Laboratory of Genetics and Molecular Biology, Programa de Pós-Graduação Em Biologia, Universidade Do Vale Do Rio Dos Sinos (UNISINOS), Av. Unisinos 950, São Leopoldo, RS, 93022-750, Brazil
| | - Marcela Marmitt
- Laboratory of Genetics and Molecular Biology, Programa de Pós-Graduação Em Biologia, Universidade Do Vale Do Rio Dos Sinos (UNISINOS), Av. Unisinos 950, São Leopoldo, RS, 93022-750, Brazil
| | - Marlon Ferraz
- Laboratory of Fish Ecology, Programa de Pós-Graduação Em Biologia, Universidade Do Vale Do Rio Dos Sinos (UNISINOS), São Leopoldo, RS, Brazil
| | - Sabrina Nicole Arend
- Laboratory of Genetics and Molecular Biology, Programa de Pós-Graduação Em Biologia, Universidade Do Vale Do Rio Dos Sinos (UNISINOS), Av. Unisinos 950, São Leopoldo, RS, 93022-750, Brazil
| | - Gabriela Kern
- Laboratory of Genetics and Molecular Biology, Programa de Pós-Graduação Em Biologia, Universidade Do Vale Do Rio Dos Sinos (UNISINOS), Av. Unisinos 950, São Leopoldo, RS, 93022-750, Brazil
| | - Regina Célia Espinosa Modolo
- Programa de Pós-Graduação Em Engenharia Civil, Escola Politécnica, Universidade Do Vale Do Rio Dos Sinos (UNISINOS), São Leopoldo, RS, Brazil
| | - Ana Lusia Leal
- Superintendence for the Treatment of Wastewater, SITEL/CORSAN, Companhia Riograndense de Saneamento, Polo Petroquímico Do Sul, Triunfo, RS, Brazil
| | - Victor Hugo Valiati
- Laboratory of Genetics and Molecular Biology, Programa de Pós-Graduação Em Biologia, Universidade Do Vale Do Rio Dos Sinos (UNISINOS), Av. Unisinos 950, São Leopoldo, RS, 93022-750, Brazil.
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Abbas A, Anwar F, Ahmad N, Shahid M, Al-Mijalli SH, Yaseen M, Farooq S, Iqbal M. Characterization of Bioactives and Nutra-Pharmaceutical Potential of Supercritical Fluid and Hydro-Distilled Extracted Coriander Leaves Essential Oil. Dose Response 2022; 20:15593258221130749. [PMID: 36387777 PMCID: PMC9647271 DOI: 10.1177/15593258221130749] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
The volatiles chemical composition and biological attributes of coriander
(Coriandrum sativum L.) leaves essential oil obtained by
two extraction techniques namely supercritical fluid extraction and
hydro-distillation is appraised. The coriander essential oil yield (.12%) by
hydro-distillation was slightly higher than that of supercritical fluid
extraction (.09%). The physico-chemical variables of the essential oil obtained
from both the techniques varied in significantly (P < .05). GC-MS analysis
identified 23 different components in supercritical fluid extracted oil and 18
components in hydro-distilled essential oil having linalool as major component
(51.32% and 61.78%, respectively) followed by phytol (12.71%). The oil recovered
by supercritical fluid extraction exhibited greater DPPH radical scavenging
activity as well as reducing power as compared to the essential oil obtained by
hydro-distillation technique along with a stronger biofilm inhibition and least
hemolysis. The results of antimicrobial activity revealed that super critical
fluid extracted essential oil has potent antifungal and antibacterial activity
against P. multocida and A alternata, whereas
hydro-distilled essential oil displayed better antimicrobial potential against
E coli and A niger. Overall, these results
depict that supercritical fluid extraction is superior than hydro-distillation
with regard to isolation of better-quality coriander essential oil for
nutra-pharmaceutical developments.
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Affiliation(s)
- Ali Abbas
- Department of Chemistry, Govt. Postgraduate Taleem-ul-Islam College, Chiniot, Pakistan
- Institute of Chemistry, University of Sargodha, Sargodha, Pakistan
| | - Farooq Anwar
- Institute of Chemistry, University of Sargodha, Sargodha, Pakistan
| | - Naveed Ahmad
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan
| | - Muhammad Shahid
- Department of Biotechnology and Bioinformatics, Government College University Faisalabad, Pakistan
| | - Samiah H. Al-Mijalli
- Department of Biology, College of Sciences, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Muhammad Yaseen
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan
| | | | - Munawar Iqbal
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan
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17
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Ionizing radiation based advanced oxidation process for reactive orange 122 dye degradation and kinetics studies. Z PHYS CHEM 2022. [DOI: 10.1515/zpch-2021-3056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In the current study, the degradation of reactive orange 122 (RO 122) dye was carried out under UV and gamma irradiation in presence of H2O2. The effect of variables such as UV exposure time, gamma-ray absorbed dose, initial concentration of dye and oxidant dose were investigated. The removal of 64.10, 58.84 and 55.46 (%) was observed for 50, 100 and 150 (mg/L) dye concentrations, respectively using UV radiation time of 150 (min). The degradation was enhanced to 80.39, 69.95 and 67.01 (%) when UV radiation was employed in the presence of H2O2 (0.5 mL/L) for above concentrations respectively. The degradation was further improved to 97, 92.54 and 81.32 (%) using 5 kGy absorbed dose along with H2O2 (0.5 mL/L). The reduction in chemical oxygen demand (COD) was 77, 64 and 57 (%) using UV/H2O2 (0.5 mL/L), while 63, 56 and 53 (%) in case of gamma/H2O2 for aforementioned concentrations. The removal efficiency (G-value), dose constants (k), dose indispensable for 50, 90 and 99 (%) degradation (D
0.5, D
0.90, and D
0.99) after the treatment with gamma radiation were determined. The G-value was noted as 0.46–0.0711 for 50–150 mg/L dye concentration for gamma irradiated samples which improved to 0.57–0.1204 for above mentioned concentrations in presence of H2O2. The FTIR analysis showed that all the peaks were disappeared using gamma/H2O2 at 5 kGy absorbed dose except a minor peak of −CO stretching. The degradation mechanism of dye followed pseudo-first-order kinetics. A significant decrease in peak area was observed by the HPLC analysis after treating the dye samples with gamma/H2O2 (0.5 mL/L) at absorbed dose of 5 kGy which has proven the process efficiency for dye degradation.
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18
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Li X, Zhang H, Du X, Wang S, Zhang Q, Li H, Ye F. Efficient visible-light-driven degradation of tetracycline by a 2D/2D rGO-Bi 2WO 6 heterostructure. ENVIRONMENTAL RESEARCH 2022; 212:113326. [PMID: 35439458 DOI: 10.1016/j.envres.2022.113326] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 04/08/2022] [Accepted: 04/13/2022] [Indexed: 06/14/2023]
Abstract
Constructing heterostructures has been a simple yet effective strategy for improving the photocatalytic performance of individual semiconductor photocatalysts. However, the poor quality of the contacted interface coupled with the narrow and overlapping light absorption scope between heterocomponents limits potential improvement. Herein, a 2D/2D rGO-Bi2WO6 heterostructure with face-to-face compact contact interface and UV to NIR light absorption ability was synthesized to overcome the aforementioned limitations. The as-prepared 2 wt%-rGO-Bi2WO6 with a high contact interface quality exhibits the highest kinetic rate of (5.53 ± 0.75) × 10-2 L mg-1 min-1 toward tetracycline (TC) degradation, which is 2.4 times higher than that of pristine Bi2WO6 and 2.1 times higher than that of the 2 wt%-rGO-Bi2WO6 composite with a poor interface quality. Moreover, approximately 30% of TC can be mineralized with a 2 wt%-rGO-Bi2WO6 presented system after 120 min. The subsequent Escherichia coli culture and liquid chromatography-mass spectrometry were employed to detect the biotoxicity variation of degradation intermediates and the possible transformation pathways of TC, respectively. Finally, the reactive species trapping results indicate that photogenerated holes and superoxide radical anions play dominant roles during the TC degradation process. This work provides a facile and effective method to fabricate an efficient heterojunction photocatalyst for pollutant degradation.
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Affiliation(s)
- Xinyu Li
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Hui Zhang
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Xuedong Du
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Shuaijie Wang
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China.
| | - Qingrui Zhang
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Houfen Li
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Fei Ye
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China.
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Bellouk H, Mrabet IE, Tanji K, Nawdali M, Benzina M, Eloussaief M, Zaitan H. Performance of coagulation-flocculation followed by ultra-violet/ultrasound activated persulfate/hydrogen peroxide for landfill leachate treatment. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2022.e01312] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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20
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Uslu İ, Yazıcı H. Investigation of the effect of nitrification inhibition on the performance and effluent quality of aerobic sequential batch reactors. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:592. [PMID: 35854142 DOI: 10.1007/s10661-022-10256-9] [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: 01/11/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
The use of nitrification inhibition as a concentrating step for ammonium (NH4+), for the purpose of increasing the potential for simultaneous recovery of phosphate (PO43-) and NH4+ from effluent streams of an aerobic sequencing batch reactor (SBR) system, has never been investigated in the literature. Therefore, the present study aimed to determine the effect of the inhibition of nitrification on both the reactor performance and effluent quality in a laboratory scale aerobic SBR system. In order to compare the observed results, a separate reactor, where the inhibition was not applied, was operated as a control reactor (CR) under the identical operational conditions used for the inhibitory reactor (IR). Experimental results for the reactor performance showed that effluents with low total suspended solids (< 50 mg/L) and chemical oxygen demand concentrations (> 90% of removal efficiency based on the influent concentration of 500 mg/L) were achieved for both SBRs by obtaining an activated sludge with a sludge volume index < 60 mL/g after the acclimation period. In the same period, the effluent PO43-, NH4+, and nitrate (NO3-) concentrations were found to be 17.0 ± 4.0, 1.26 ± 0.84, and 21.5 ± 39 mg/L for the CR and 10.0 ± 4.4, 3.9 ± 2.4, and 9.2 ± 1.5 mg/L for the IR, respectively. During this period, 94% of the removed NH4+ (NH4+rem.) was converted to NO3- in the CR, indicating almost complete nitrification occurred in the reactor. However, only 47% of the NH4+rem. was converted to NO3- in the IR as a result of the inhibition of nitrification, meaning a partial inhibition (53%) occurred due to the inhibition treatment. These results clearly demonstrated that the inhibition of nitrification allowed the effluent NH4+ concentrations to increase by suppressing the formation of NO3- ions. Based on the results, it can be concluded that inhibition of nitrification in an aerobic SBR system creates a potential for conserving the effluent NH4+ concentration and increasing consecutive recovery of PO43- together with NH4+ from the effluent discharges.
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Affiliation(s)
- İrem Uslu
- Department of Environmental Engineering, Faculty of Engineering, Süleyman Demirel University, 32260, Isparta, Turkey
| | - Hüseyin Yazıcı
- Department of Environmental Protection Technologies, Vocational School of Aksu Mehmet Süreyya Demiraslan, Isparta University of Applied Sciences, 32510, Isparta, Turkey.
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21
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ADOU KE, KOUAKOU AR, EHOUMAN AD, TYAGI RD, DROGUI P, ADOUBY K. Coupling anaerobic digestion process and electrocoagulation using iron and aluminium electrodes for slaughterhouse wastewater treatment. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2022.e01238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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22
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Zhou R, Liu F, Du X, Zhang C, Yang C, Offiong NA, Bi Y, Zeng W, Ren H. Removal of metronidazole from wastewater by electrocoagulation with chloride ions electrolyte: The role of reactive chlorine species and process optimization. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120799] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Lee KH, Lee SK, Lee J, Kim S, Kim SW, Park C, Yoo HY. Energy-efficient glucose recovery from chestnut shell by optimization of NaOH pretreatment at room temperature and application to bioethanol production. ENVIRONMENTAL RESEARCH 2022; 208:112710. [PMID: 35026183 DOI: 10.1016/j.envres.2022.112710] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 01/04/2022] [Accepted: 01/06/2022] [Indexed: 06/14/2023]
Abstract
Biofuel policies are currently being implemented globally to reduce greenhouse gas emissions. The recent European regulation, Renewable Energy Directive (RED) II, states that renewable resources should be used as raw materials. In this study, chestnut shell (CNS), a food processing residue, was utilized as a feedstock for bioethanol production. Statistical optimization was performed to improve biomass-to-glucose conversion (BtG) from the CNS. In order to design an energy-efficient process, the pretreatment was fixed at room temperature in the numerical optimization. The optimal conditions derived from the predicted model are as follows: temperature of 25 °C, reaction time of 2.8 h, and NaOH concentration of 1.9% (w/w). Under optimal conditions, both predicted and experimental BtG were 31.0%, while BtG was approximately 3.3-fold improved compared to the control group (without pretreatment). The recovered glucose was utilized for bioethanol fermentation by Saccharomyces cerevisiae K35 and the ethanol yield was achieved to be 98%. Finally, according to the mass balance based on 1000 g CNS, glucose of 310 g can be recovered by the pretreatment; the bioethanol production was approximately 155 g. This strategy suggests a direction to utilize CNS as a potential feedstock for biorefinery through the design of an economical and energy-efficient pretreatment process by lowering the reaction temperature to room temperature.
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Affiliation(s)
- Kang Hyun Lee
- Department of Biotechnology, Sangmyung University, 20 Hongjimun 2-Gil, Jongno-Gu, Seoul, 03016, Republic of Korea.
| | - Soo Kweon Lee
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul, 02841, Republic of Korea.
| | - Jeongho Lee
- Department of Biotechnology, Sangmyung University, 20 Hongjimun 2-Gil, Jongno-Gu, Seoul, 03016, Republic of Korea.
| | - Seunghee Kim
- Department of Biotechnology, Sangmyung University, 20 Hongjimun 2-Gil, Jongno-Gu, Seoul, 03016, Republic of Korea.
| | - Seung Wook Kim
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul, 02841, Republic of Korea.
| | - Chulhwan Park
- Department of Chemical Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea.
| | - Hah Young Yoo
- Department of Biotechnology, Sangmyung University, 20 Hongjimun 2-Gil, Jongno-Gu, Seoul, 03016, Republic of Korea.
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Treatment of Distillery Industrial Wastewater Using Ozone Assisted Fenton’s Process: Color and Chemical Oxygen Demand Removal with Electrical Energy per Order Evaluation. INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING 2022. [DOI: 10.1155/2022/5006911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Ozonation is one of the most effective and efficient advanced oxidation processes (AOPs) and has shown great potential in the treatment of industrial effluent and wastewater. In the present work, the ozone-Fenton process for % COD and color removal together with electrical energy per order (EE/O) determination for distillery industrial wastewater (DIW) was established. The process was developed by combining the ozone (O3) with the Fenton (Fe2+/H2O2) process. The ozone-Fenton (O3/Fe2+/H2O2) was compared with other treatment processes such as O3, Fe2+, H2O2, O3/Fe2+, O3/H2O2, and Fe2+/H2O2 for EE/O together with % COD and color removal efficiency for DIW. The removal of color at 100% and chemical oxygen demand (COD) of 96.875% were achieved with a minimum of EE/O of 0.5315 kWh/m3 using the O3/Fe2+/H2O2 process by operating at optimum conditions. The % COD and color values obtained using O3/Fe2+/H2O2 were significantly higher than those obtained using O3, Fe2+, H2O2, O3/Fe2+, O3/H2O2, and Fe2+/H2O2 processes. The % color, % COD removal, and its associated EE/O were evaluated by varying Fe2+, H2O2, O3 inlet and COD concentration, and initial wastewater pH using the O3/Fe2+/H2O2 process. The synergy effect of the O3 and Fe2+/H2O2 processes was evaluated and reported. Our experimental findings suggest that combining O3 with the Fe2+/H2O2 process could effectively treat industrial effluent and wastewater.
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Kasirajan R, Bekele A, Girma E. Adsorption of lead (Pb-II) using CaO-NPs synthesized by solgel process from hen eggshell: Response surface methodology for modeling, optimization and kinetic studies. SOUTH AFRICAN JOURNAL OF CHEMICAL ENGINEERING 2022. [DOI: 10.1016/j.sajce.2022.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Zhang H, Bian J, Yang C, Hu Z, Liu F, Zhang C. Removal of tetracycline from livestock wastewater by positive single pulse current electrocoagulation: Mechanism, toxicity assessment and cost evaluation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 810:151955. [PMID: 34843788 DOI: 10.1016/j.scitotenv.2021.151955] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/13/2021] [Accepted: 11/21/2021] [Indexed: 06/13/2023]
Abstract
The widespread use of veterinary antibiotics has led to the significant problem of contamination of livestock wastewater with significant amount of antibiotics. Electrocoagulation (EC) has become a prominent research topic because of the technique's ability to remove antibiotics from livestock wastewater. However, an urgent solution is needed to reduce the high operating costs associated with the process. Therefore, in this study, we developed a positive single pulse current (PSPC)-EC system to remove tetracycline (TC) from synthetic and actual livestock wastewater. Influential factors were investigated, and the optimal PSPC-EC operating parameters were identified as follows: duty ratio = 60%, pH = 4, electrode spacing = 1 cm, current intensity = 0.2 A, and conductivity = 2 mS cm-1. The mechanism of PSPC-EC was characterised using techniques including scanning electron microscopy, X-ray diffraction and Fourier transform infrared spectroscopy. The TC decomposition pathway was proposed based on the generation of its intermediate products. A toxicity estimation software tool (TEST) model was used to evaluate the toxicity of TC and its main degradation products, and most of its intermediates were found to be less toxic than TC. The contribution ratios of floc adsorption and electrochemical oxidation for removing TC were 74.17% and 21.48%, respectively. The highest TC removal rate reached 95% with an operating cost of 0.011 USD/m3. Finally, under the optimum conditions identified, actual livestock wastewater was treated by PSPC-EC. Compared with conventional EC and coagulation treatment techniques that consume electricity and produce pollution, the results indicate that the PSPC-EC technique with changing current operation mode is a more cost-effective and attractive option for removing TC from livestock wastewater.
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Affiliation(s)
- Han Zhang
- Key Lab of Groundwater Resources and Environment (Ministry of Education), Jilin University, Changchun 130021, China; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China
| | - Jianmin Bian
- Key Lab of Groundwater Resources and Environment (Ministry of Education), Jilin University, Changchun 130021, China
| | - Chaoge Yang
- Key Lab of Groundwater Resources and Environment (Ministry of Education), Jilin University, Changchun 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, 2519 Jiefang Road, Changchun, Jilin 130021, China
| | - Zichen Hu
- College of Chemistry, Jilin University, Changchun 130015, China
| | - Fangyuan Liu
- Key Lab of Groundwater Resources and Environment (Ministry of Education), Jilin University, Changchun 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, 2519 Jiefang Road, Changchun, Jilin 130021, China.
| | - Chunpeng Zhang
- Key Lab of Groundwater Resources and Environment (Ministry of Education), Jilin University, Changchun 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, 2519 Jiefang Road, Changchun, Jilin 130021, China.
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Chen Y, Liao D, Lin Y, Deng T, Yin F, Su P, Feng D. Electrochemical degradation performance and mechanism of dibutyl phthalate with hydrophobic PbO 2 electrode. CHEMOSPHERE 2022; 288:132638. [PMID: 34687678 DOI: 10.1016/j.chemosphere.2021.132638] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/18/2021] [Accepted: 10/19/2021] [Indexed: 06/13/2023]
Abstract
A polytetrafluoroethylene (PTFE) doped PbO2 anode with a highly hydrophobicity was fabricated by electrodeposition method. In this process, vertically aligned TiO2 nanotubes (TiO2NTs) are formed by the anodic oxidation of Ti plates as an intermediate layer for PbO2 electrodeposition. The characterization of the electrodes indicated that PTFE was successfully introduced to the electrode surface, the TiO2NTs were completely covered with β-PbO2 particles and gave it a large surface area, which also limited the growth of its crystal particles. Compared with the conventional Ti/PbO2 and Ti/TiO2NTs/PbO2 electrode, the Ti/TiO2NTs/PbO2-PTFE electrode has enhanced surface hydrophobicity, higher oxygen evolution potential, lower electrochemical impedance, with more active sites, and generate more hydroxyl radicals (·OH), which were enhanced by the addition of PTFE nanoparticles. The electrocatalytic performance of the three electrodes were investigated using dibutyl phthalate (DBP) as the model pollutant. The efficiency of the DBP removal of the three electrodes was in the order: Ti/TiO2NTs/PbO2-PTFE > Ti/TiO2NTs/PbO2 > Ti/PbO2. The degradation process followed the pseudo-first-order kinetic model well, with rate constants of 0.1326, 0.1266, and 0.1041 h-1 for the three electrodes, respectively. The lowest energy consumption (6.1 kWh g-1) was obtained after 8 h of DBP treatment using Ti/TiO2NTs/PbO2-PTFE compared to Ti/TiO2NTs/PbO2 (6.7 kWh g-1) and Ti/PbO2 (7.4 kWh g-1) electrodes. Moreover, the effects of current density, initial pH and electrolyte concentration were investigated. Finally, the products of the DBP degradation process were verified based on gas chromatography-mass spectrometry analysis, and possible degradation pathways were described.
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Affiliation(s)
- Yongsheng Chen
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, 201306, China
| | - Dexiang Liao
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, 201306, China.
| | - Yue Lin
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, 201306, China
| | - Tianyu Deng
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, 201306, China
| | - Fang Yin
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, 201306, China
| | - Penghao Su
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, 201306, China
| | - Daolun Feng
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, 201306, China
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Liu Q, Xu K, Hu G, Zeng F, Li X, Li C, Zhang Y. Underwater superelastic MOF/polyacrylamide/chitosan composite aerogel for efficient 2, 4-dichlorophenoxyacetic acid adsorption. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127970] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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29
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Hu Y, Gu Z, He J, Li Q. Novel strategy for controlling colloidal instability during the flocculation pretreatment of landfill leachate. CHEMOSPHERE 2022; 287:132051. [PMID: 34523455 DOI: 10.1016/j.chemosphere.2021.132051] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 08/10/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
Flocculation is an economical and effective pretreatment technology for landfill leachate. An iron salt flocculant is often used in landfill leachate pretreatment, but the flocs that are formed are affected by the operation sequence, which subsquently influences flocculation. This study selected three representative landfill leachates (i.e., mature landfill leachate (MLL), biologically treated landfill leachate (BTL), and nanofiltration concentrate leachate (NFCL)). The effect of different operation modes on the removal of organic matter from landfill leachate by flocculation was studied, and a strategy to control colloidal instability is put forward. The results revealed that adjusting the pH value to 9 using NaOH changes the zeta potential of leachate when the leachate and sludge are not separated, which affects electric neutralization in flocculation and colloidal stability. Furthermore, a part of the collected organic matter is released to the leachate again, leading to a decrease in the flocculation pretreatment effect. In this improved flocculation process, the leachate and sludge are first separated, and the pH value of the system is then adjusted to 9. The effect of OH- on electric neutralization is avoided and the remaining Fe3+ can further remove organic matter from leachates. Finally, the UV254 removal efficiencies of MLL, BTL, and NFCL increased by 20.38%, 28.67%, and 22.67%, respectively. In a full-scale application, i.e., an NFCL treatment facility, the UV254 removal efficiency during long-term operation reached 87.50%. Therefore, the colloid instability control strategy this study proposes can provide theoretical and engineering references for the flocculation pretreatment of landfill leachate.
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Affiliation(s)
- Yuansi Hu
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Zhepei Gu
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Junjie He
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Qibin Li
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China.
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Pisharody L, Gopinath A, Malhotra M, Nidheesh PV, Kumar MS. Occurrence of organic micropollutants in municipal landfill leachate and its effective treatment by advanced oxidation processes. CHEMOSPHERE 2022; 287:132216. [PMID: 34517234 DOI: 10.1016/j.chemosphere.2021.132216] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/25/2021] [Accepted: 09/07/2021] [Indexed: 06/13/2023]
Abstract
Landfilling is the most prominently adopted disposal technique for managing municipal solid waste across the globe. However, the main drawback associated with this method is the generation of leachate from the landfill site. Leachate, a highly concentrated liquid consisting of both organic and inorganic components arises environmental issues as it contaminates the nearby aquifers. Landfill leachate treatment by conventional methods is not preferred as the treatment methods are not much effective to remove these pollutants. Advanced oxidation processes (AOPs) based on both hydroxyl and sulfate radicals could be a promising method to remove the micropollutants completely or convert them to non-toxic compounds. The current review focuses on the occurrence of micropollutants in landfill leachate, their detection methods and removal from landfill leachate using AOPs. Pharmaceuticals and personal care products occur in the range of 10-1 to more than 100 μg L-1 whereas phthalates were found below the detectable limit to 384 μg L-1, pesticides in the order of 10-1 μg L-1 and polyaromatic hydrocarbons occur in concentration from 10-2 to 114.7 μg L-1. Solid-phase extraction is the most preferred method for extracting micropollutants from leachate and liquid chromatography (LC) - mass spectrophotometer (MS) for detecting the micropollutants. Limited studies have been focused on AOPs as a potential method for the degradation of micropollutants in landfill leachate. The potential of Fenton based techniques, electrochemical AOPs and ozonation are investigated for the removal of micropollutants from leachate whereas the applicability of photocatalysis for the removal of a wide variety of micropollutants from leachate needs in-depth studies.
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Affiliation(s)
- Lakshmi Pisharody
- The Zuckerberg Institute of Water Research, Ben-Gurion University, Israel
| | - Ashitha Gopinath
- Environmental Impact and Sustainability Division, CSIR-National Environmental Engineering Research Institute, Nagpur, Maharashtra, India
| | - Milan Malhotra
- Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - P V Nidheesh
- Environmental Impact and Sustainability Division, CSIR-National Environmental Engineering Research Institute, Nagpur, Maharashtra, India.
| | - M Suresh Kumar
- Environmental Impact and Sustainability Division, CSIR-National Environmental Engineering Research Institute, Nagpur, Maharashtra, India
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31
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Enhancement of the electro-Fenton degradation of organic contaminant by accelerating Fe3+/Fe2+ cycle using hydroxylamine. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2021.09.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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32
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Yuan J, Li Y, Guo Y, Wang Z. Enhanced degradation of dimethyl phthalate in wastewater via heterogeneous catalytic ozonation process: performances and mechanisms. RSC Adv 2022; 12:31024-31031. [PMID: 36349032 PMCID: PMC9620413 DOI: 10.1039/d2ra05048j] [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: 08/12/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022] Open
Abstract
Ozonation process is a promising yet challenging method for the removal of refractory organic matter due to the sluggish reaction for generating hydroxyl radical (˙OH) at a neutral pH condition. Herein, an efficient heterogeneous catalytic ozonation system using CeO2/Al2O3 catalyst was developed to remove dimethyl phthalate (DMP) from wastewater. Under a neutral condition of pH = 6, this system achieved almost 100% DMP removal within 15 min at an optimized catalyst dosage of 30 g L−1 and the ozone flow rate of 22.5 mg min−1. Moreover, the catalytic ozonation system exhibited a stable degradation performance of DMP in a wider pH range (pH = 5–10). The results of electron paramagnetic resonance (EPR) and quantitative tests confirmed the ultrafast conversion of O3 to ˙OH (0.774 μM min−1) on the surface of CeO2 based ceramic catalyst. The quenching experiments further supported the predominant role of ˙OH in the mineralization of DMP. These results highlight the potential of using the heterogeneous catalytic ozonation system for the efficient removal of refractory organic matter from wastewater. An efficient heterogeneous catalytic ozonation system using CeO2/Al2O3 catalyst was developed to remove dimethyl phthalate (DMP) from wastewater.![]()
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Affiliation(s)
- Jia Yuan
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, Tongji Advanced Membrane Technology Center, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Yang Li
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, Tongji Advanced Membrane Technology Center, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Yun Guo
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, Tongji Advanced Membrane Technology Center, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Zhiwei Wang
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, Tongji Advanced Membrane Technology Center, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
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33
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Response Surface Methodology (RSM)-Based Prediction and Optimization of the Fenton Process in Landfill Leachate Decolorization. Processes (Basel) 2021. [DOI: 10.3390/pr9122284] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
As an advanced oxidative processes, the Fenton process is receiving popularity as a wastewater treatment technique that can be used for hazardous landfill leachate. The treatment is simple, yet involves complex interactions between the affecting parameters including reaction time, H2O2/Fe2+ ratio, pH, and iron (II) ion concentration. Hence, the purpose of this present study was to analyze the factors affecting landfill leachate treatment as well as their interaction by means of response surface methodology (RSM) with central composite design. The independent variables were reaction time, H2O2/Fe2+ ratio, iron (II) ion concentration, and pH, and the dependent variable (response) was color-removal percentage. The optimum treatment conditions for pH, H2O2/Fe2+ ratio, Fe2+ concentration, and reaction time were 8.36, 3.32, 964.95 mg/L, and 50.15 min, respectively. The model predicted 100% color removal in optimum conditions, which was close to that obtained from the experiment (97.68%). In conclusion, the optimized Fenton process using the RSM approach promotes efficient landfill leachate treatment that is even higher than that already reported.
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34
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Mechanism of significant enhancement of VO2-Fenton-like reactions by oxalic acid for diethyl phthalate degradation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119671] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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35
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Yuan Y, Liu J, Gao B, Hao J. Ozone direct oxidation pretreatment and catalytic oxidation post-treatment coupled with ABMBR for landfill leachate treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 794:148557. [PMID: 34323762 DOI: 10.1016/j.scitotenv.2021.148557] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/15/2021] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
In order to treat the high concentration landfill leachate, ozone direct oxidation pretreatment and catalytic oxidation post-treatment coupled with anaerobic baffled membrane bioreactor (ABMBR) system was proposed in this study. For pretreatment, ozone direct oxidation could remarkably reduce UV254, 3D fluorescence peak value and fluorescence regional integration (FRI) of organic pollutants. For ABMBR treatment, the removal efficiencies of COD and ammonia nitrogen were 80.38% and 21.56%, respectively. Post-treatment included struvite precipitation, ozone catalytic oxidation and membrane bioreactor (MBR) treatment. Finally, the total removal efficiencies of COD and ammonia nitrogen were 91.2% and 99.4%, respectively. The chroma was remarkably decreased from 1250 times to 40 times after a series of treatments. The acids in ABMBR could be degraded by microorganisms of Proteobacteria and Chloroflexi. The cellulose and polysaccharides could be decomposed by Bacteroidetes and ketones could be decomposed by Brevundimonas in ABMBR. Electron paramagnetic resonance (EPR) analysis indicated that the hydroxyl radicals were the main reactive oxygen species during the direct ozone oxidation process, while the superoxide radicals played an important role in the ozone catalytic oxidation process.
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Affiliation(s)
- Yuchen Yuan
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Membrane Separation of Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Jiadong Liu
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Membrane Separation of Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an 710055, China.
| | - Bo Gao
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Membrane Separation of Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Jialiang Hao
- JUSCO (DaLian) Environmental Science and Technology Co. Ltd., China
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36
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Graphene oxide and Fe3O4 composite synthesis, characterization and adsorption efficiency evaluation for NO3¯ and PO43¯ ions in aqueous medium. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116746] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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37
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Sathe SM, Chakraborty I, Dubey BK, Ghangrekar MM. Microbial fuel cell coupled Fenton oxidation for the cathodic degradation of emerging contaminants from wastewater: Applications and challenges. ENVIRONMENTAL RESEARCH 2021; 204:112135. [PMID: 34592250 DOI: 10.1016/j.envres.2021.112135] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 09/04/2021] [Accepted: 09/24/2021] [Indexed: 02/05/2023]
Abstract
Urbanization and industrialization have resulted in the escalation of the occurrence of emerging contaminants (EC) in the wastewater and ultimately to the receiving water bodies due to their bio-refractory nature. The presence of ECs in the water bodies adversely affects all three domains of life, viz. bacteria, archaea and eukaryotes, and eventually the ecosystem. Fenton oxidation is one of the most suitable method that is capable of degrading a variety of ECs by employing a strong oxidizing agent in the form of •OH. The coupling of Fenton oxidation with microbial fuel cell (MFC) offers benefits, such as low-cost, minimal requirement of external energy, and in-situ generation of oxidizing agents. The resulting system, termed as bio-electro-Fenton MFC (BEF-MFC), is capable of degrading the ECs in the cathodic chamber, while harvesting bioelectricity and simultaneously removing oxidizable organic matter from wastewater in the anodic chamber. This review discusses the applications of BEF-MFC for the treatment of dyes, pharmaceuticals, pesticides, and real complex wastewaters. Additionally, the effect of operating conditions on the performance of BEF-MFC are elaborated and emphasis is also given on possible future direction of research that can be adopted in BEF-MFC in the purview of up-scaling.
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Affiliation(s)
- S M Sathe
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Indrajit Chakraborty
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - B K Dubey
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - M M Ghangrekar
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
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38
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The electrochemical, dielectric, and ferroelectric properties of Gd and Fe doped LaNiO 3 with an efficient solar-light driven catalytic activity to oxidize malachite green dye. J Colloid Interface Sci 2021; 607:568-583. [PMID: 34509732 DOI: 10.1016/j.jcis.2021.08.209] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 08/24/2021] [Accepted: 08/30/2021] [Indexed: 12/26/2022]
Abstract
This work investigates the effects of double ion substitution on the ferroelectric, electrochemical, dielectric and photocatalytic properties of Gd and Fe doped La1-yGdyNi1-xFexO3 nanoparticles (NPs). La1-yGdyNi1-xFexO3 was fabricated by facile micro-emulsion path and its properties were studied by thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman scattering, Fourier Transform of Infrared (FTIR), energy dispersive x-rays (EDX) techniques. It has a distorted rhombohedral shape with crystallite size within the range of 17-23 nm. The doped material has a spherical heterogeneous morphology, and its surface area increased with increased doping. The electrochemical (CV, EIS, and I-V), conductivity and dielectric (dielectric constant and low dielectric & tangent loss) properties of La1-yGdyNi1-xFexO3 were dependent on the contents of the dopants (Gd and Fe). The doped material had improved specific capacitance compared to the undoped LaNiO3 due to the synergistic effect of Gd and Fe on the doped materials. The conductivity of Gd and Fe doped LaNiO3 5.16 × 104 Sm-1 was enhanced compared to the undoped LaNiO3 3.52 × 10-2 Sm1. Furthermore, hysteresis loop was used to investigate the coercivity (Hc), saturation magnetization (Ms) and remanence (Mr) of the material. The Ms and Mr values were enhanced with the content of the dopants. The photocatalytic activity (PCA) of the material in degrading malachite green (MG) dye was studied. La1-yGdyNi1-xFexO3 NPs was able to degrade up to 96.4% of the dye under visible light irradiation in 50 min. La1-yGdyNi1-xFexO3 has remarkable dielectric, electrochemical, ferroelectric and photo-catalytic properties and have potential applications in microwave, electrical, electronic, energy storage devices. It is also an active photo-catalyst material for the removal/oxidation of toxic pollutants from the environment.
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Ahmad A, Priyadarshini M, Das S, Ghangrekar MM. Electrocoagulation as an efficacious technology for the treatment of wastewater containing active pharmaceutical compounds: a review. SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2021.1972011] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Azhan Ahmad
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Monali Priyadarshini
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Sovik Das
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Makarand Madhao Ghangrekar
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
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40
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Yan C, Tian Y, Cheng Z, Wei Z, Zhang X, Quan X. Simultaneous Desalination and Removal of Recalcitrant Organics from Reverse Osmosis Leachate Concentrate by Electrochemical Oxidation. ACS OMEGA 2021; 6:16049-16057. [PMID: 34179650 PMCID: PMC8223443 DOI: 10.1021/acsomega.1c01916] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 06/01/2021] [Indexed: 05/04/2023]
Abstract
Reverse osmosis (RO) concentrate produced in the municipal solid waste (MSW) leachate treatment process is extremely hard to be treated because of its high color, high salt content, and high concentration of recalcitrant organic compounds. A new multichannel flow reactor with electrode gaps of 5 mm was designed to desalinate and remove organics simultaneously from the RO leachate concentrate (ROLC) by electrochemical oxidation process using the RuO2/IrO2-coated titanium plate (RuO2/IrO2-Ti) as the anodes. The effects of the process parameters of current density (I A), superficial circulating velocity (U L), etc. on the removal efficiency (RE) of the chemical oxygen demand (COD) and average energy consumption () were investigated. The results illustrated that after 3 h of treatment, the RE of COD, Cl-, and color could reach as high as 96.5, 96.7, and 99.6%, respectively. Besides, the of the electrochemical oxidation treatment process is as low as 40.98 kWh/(kg COD), and a new mechanism of the simultaneous removal of COD and desalination has been proposed. This work provides an alternative technology for the treatment of MSW leachate RO concentrate.
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Affiliation(s)
- Chaoqun Yan
- School
of Chemistry and Chemical Engineering, Chongqing
University of Technology, Chongqing 400054, China
| | - Yijuan Tian
- School
of Chemistry and Chemical Engineering, Chongqing
University of Technology, Chongqing 400054, China
| | - Zhiliang Cheng
- School
of Chemistry and Chemical Engineering, Chongqing
University of Technology, Chongqing 400054, China
| | - Zejun Wei
- Chongqing
Academy of Science and Technology, Chongqing 401121, China
| | - Xuan Zhang
- School
of Chemistry and Chemical Engineering, Chongqing
University of Technology, Chongqing 400054, China
| | - Xuejun Quan
- School
of Chemistry and Chemical Engineering, Chongqing
University of Technology, Chongqing 400054, China
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Tao L, Ren H, Yu F. High-efficiency electro-catalytic performance of green dill biochar cathode and its application in electro-Fenton process for the degradation of pollutants. NEW J CHEM 2021. [DOI: 10.1039/d1nj03430h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biochar (BC) is a kind of carbon-rich, renewable and low-cost material, which can be prepared from various organic materials.
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Affiliation(s)
- Ling Tao
- Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
- Gansu Hanxing Environmental Protection Co., Ltd., Lanzhou 730070, China
| | - Hanru Ren
- Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Fangke Yu
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
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