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Behera AK, Shadangi KP, Sarangi PK. Synthesis of dye-sensitized TiO 2/Ag doped nano-composites using UV photoreduction process for phenol degradation: A comparative study. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 312:120019. [PMID: 36037850 DOI: 10.1016/j.envpol.2022.120019] [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: 05/09/2022] [Revised: 07/24/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
This study investigates a comparison between the photocatalytic action of two nanocomposites (TiO2 and TiO2(Ag) doped) on the degradation of phenol from water. The nanocomposites were synthesized by the UV photo-reduction process to get a silver metal loading of 0.25, 0.5, 0.75, and 1% (w/w). In addition to this, Eriochrome Cyanine Red (ECR) and Eosin Yellow (EY) both anionic dyes were used for sensitization of Ag-doped TiO2 photo-catalyst such as TiO2(Ag)ECR and TiO2(Ag)EY. The TiO2(Ag-1.0)EY photo-catalyst indicated higher absorbance compared to the TiO2(Ag-1.0)ECR in the 400-700 nm range (visible range). The degradation of phenol was tested by varying the pH, silver loading and catalyst dosage. The maximum degradation of phenol was 98% in 180 min at pH 7 in presence of 1% (w/w) silver loading with 0.5 gL-1 dosage of photo-catalyst TiO2(Ag-1.0)EY. At this condition, the reduction in the phenol concentration was noticed from 20 mg/L to 0.4 mg/L.
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Affiliation(s)
- Amit Kumar Behera
- Department of Chemical Engineering, Veer Surendra Sai University of Technology, Burla, Odisha, 768018, India
| | - Krushna Prasad Shadangi
- Department of Chemical Engineering, Veer Surendra Sai University of Technology, Burla, Odisha, 768018, India.
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Feng S, Hao Ngo H, Guo W, Woong Chang S, Duc Nguyen D, Cheng D, Varjani S, Lei Z, Liu Y. Roles and applications of enzymes for resistant pollutants removal in wastewater treatment. BIORESOURCE TECHNOLOGY 2021; 335:125278. [PMID: 34015565 DOI: 10.1016/j.biortech.2021.125278] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/08/2021] [Accepted: 05/09/2021] [Indexed: 06/12/2023]
Abstract
Resistant pollutants like oil, grease, pharmaceuticals, pesticides, and plastics in wastewater are difficult to be degraded by traditional activated sludge methods. These pollutants are prevalent, posing a great threat to aquatic environments and organisms since they are toxic, resistant to natural biodegradation, and create other serious problems. As a high-efficiency biocatalyst, enzymes are proposed for the treatment of these resistant pollutants. This review focused on the roles and applications of enzymes in wastewater treatment. It discusses the influence of enzyme types and their sources, enzymatic processes in resistant pollutants remediation, identification and ecotoxicity assay of enzymatic transformation products, and typically employed enzymatic wastewater treatment systems. Perspectives on the major challenges and feasible future research directions of enzyme-based wastewater treatment are also proposed.
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Affiliation(s)
- Siran Feng
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia
| | - Huu Hao Ngo
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia; Institute of Environmental Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam; Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
| | - Wenshan Guo
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia; Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Soon Woong Chang
- Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea
| | - Dinh Duc Nguyen
- Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea; Institution of Research and Development, Duy Tan University, Da Nang, Viet Nam
| | - Dongle Cheng
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar-382 010, Gujarat, India
| | - Zhongfang Lei
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Yi Liu
- Department of Environmental Science and Engineering, Fudan University, 2205 Songhu Road, Shanghai 200438, China
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Dutra MAL, Marques NDN, Souza Filho MDSMD, Balaban RDC. Phenol removal from wastewater using eco‐friendly hybrid hydrogels. J Appl Polym Sci 2021. [DOI: 10.1002/app.50725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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A review on phenolic wastewater remediation using homogeneous and heterogeneous enzymatic processes: Current status and potential challenges. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.03.028] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Tomke PD, Rathod VK. A novel step towards immobilization of biocatalyst using agro waste and its application for ester synthesis. Int J Biol Macromol 2018; 117:366-376. [DOI: 10.1016/j.ijbiomac.2018.05.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/27/2018] [Accepted: 05/01/2018] [Indexed: 10/17/2022]
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Peroxidase chemically attached on polymeric micelle and its reaction with phenolic compounds. Enzyme Microb Technol 2018; 109:43-50. [DOI: 10.1016/j.enzmictec.2017.09.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 09/18/2017] [Accepted: 09/22/2017] [Indexed: 11/20/2022]
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Torres JA, Nogueira FGE, Silva MC, Lopes JH, Tavares TS, Ramalho TC, Corrêa AD. Novel eco-friendly biocatalyst: soybean peroxidase immobilized onto activated carbon obtained from agricultural waste. RSC Adv 2017. [DOI: 10.1039/c7ra01309d] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Closed cycle of immobilized biocatalyst production with maximum biomass use applicable in several areas.
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Affiliation(s)
- J. A. Torres
- Department of Chemistry
- Universidade Federal de Lavras
- Lavras
- Brazil
| | - F. G. E. Nogueira
- Department of Chemistry Engineering
- Universidade Federal de São Carlos
- São Carlos
- Brazil
| | - M. C. Silva
- Department of Chemistry
- Universidade Federal de Minas Gerais
- Belo Horizonte
- Brazil
| | - J. H. Lopes
- Department of Physical Chemistry
- Universidade de Campinas
- Campinas
- Brazil
| | - T. S. Tavares
- Department of Chemistry
- Universidade Federal de Lavras
- Lavras
- Brazil
| | - T. C. Ramalho
- Department of Chemistry
- Universidade Federal de Lavras
- Lavras
- Brazil
| | - A. D. Corrêa
- Department of Chemistry
- Universidade Federal de Lavras
- Lavras
- Brazil
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