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Wen H, Cheng D, Chen Y, Yue W, Zhang Z. Review on ultrasonic technology enhanced biological treatment of wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 925:171260. [PMID: 38417513 DOI: 10.1016/j.scitotenv.2024.171260] [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: 11/17/2023] [Revised: 02/23/2024] [Accepted: 02/23/2024] [Indexed: 03/01/2024]
Abstract
As a clean, sustainable and efficient technology of wastewater treatment, ultrasonic irradiation has gained special attention in wastewater treatment. It has been widely studied for degrading pollutants and enhancing biological treatment processes for wastewater treatment. This review focuses on the mechanism and updated information of ultrasonic technology to enhance biological treatment of wastewater. The mechanism involved in improving biological treatment by ultrasonic includes: 1) degradation of refractory substances and release carbon from sludges, 2) promotion of mass transfer and change of cell permeability, 3) facilitation of enzyme-catalyzed reactions and 4) influence of cell growth. Based on the above discussion, the effects of ultrasound on the enhancement of wastewater biological treatment processes can be categorized into indirect and direct ways. The indirect effect of ultrasonic waves in enhancing biological treatment is mainly achieved through the use of high-intensity ultrasonic waves. These waves can be used as a pretreatment to improve biodegradability of the wastewater. Moreover, the ultrasonic-treated sludge or its supernatant can serve as a carbon source for the treatment system. Low-intensity ultrasound is often employed to directly enhance the biological treatment of wastewater. The propose of this process is to improve activated sludge, domesticate polyphosphate-accumulating organisms, ammonia-oxidizing bacteria, and anammox bacteria, and achieve speedy start-up of partial nitrification and anammox. It has shown remarkable effects on maintaining stable operation, tolerating adverse conditions (i.e., low temperature, low C/N, etc.), resisting shock load (i.e., organic load, toxic load, etc.), and collapse recovery. These results indicate a promising future for biological wastewater treatment. Furthermore, virous ultrasonic reactor designs were presented, and their potential for engineering application was discussed.
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Affiliation(s)
- Haiting Wen
- School of Environment and Nature Resources, Renmin University of China, Beijing 100872, PR China
| | - Dongle Cheng
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, PR China.
| | - Yanlin Chen
- Chongqing Three Gorges Eco-Environmental technology innovation center Co., Ltd, Chongqing 401329, PR China
| | - Wenhui Yue
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Zehao Zhang
- National Engineering Laboratory of Urban Sewage Advanced Treatment and Resource Utilization Technology, The College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, PR China.
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2
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Song K, Liu Y, Umar A, Ma H, Wang H. Ultrasonic cavitation: Tackling organic pollutants in wastewater. CHEMOSPHERE 2024; 350:141024. [PMID: 38147929 DOI: 10.1016/j.chemosphere.2023.141024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 12/28/2023]
Abstract
Environmental pollution and energy shortages are global issues that significantly impact human progress. Multiple methods have been proposed for treating industrial and dyes containing wastewater. Ultrasonic degradation has emerged as a promising and innovative technology for organic pollutant degradation. This study provides a comprehensive overview of the factors affecting ultrasonic degradation and thoroughly examines the technique of acoustic cavitation. Furthermore, this study summarizes the fundamental theories and mechanisms underlying cavitation, emphasizing its efficacy in the remediation of various water pollutants. Furthermore, potential synergies between ultrasonic cavitation and other commonly used technologies are also explored. Potential challenges are identified and future directions for the development of ultrasonic degradation and ultrasonic cavitation technologies are outlined.
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Affiliation(s)
- Kai Song
- School of Life Science, Changchun Normal University, Changchun, 130032, China.
| | - Yijun Liu
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Ahmad Umar
- Department of Chemistry, Faculty of Science and Arts, And Promising Centre for Sensors and Electronic Devices, Najran University, Najran, 11001, Saudi Arabia; Department of Materials Science and Engineering, The Ohio State University, Columbus, 43210, OH, USA
| | - Hailing Ma
- School of Engineering and Technology, The University of New South Wales, Canberra, ACT, 2600, Australia
| | - Hongxu Wang
- School of Engineering and Technology, The University of New South Wales, Canberra, ACT, 2600, Australia.
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3
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Lee S, Anwer H, Park JW. Oxidative power loss control in ozonation: Nanobubble and ultrasonic cavitation. JOURNAL OF HAZARDOUS MATERIALS 2023; 455:131530. [PMID: 37172384 DOI: 10.1016/j.jhazmat.2023.131530] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 04/18/2023] [Accepted: 04/26/2023] [Indexed: 05/14/2023]
Abstract
Nanobubble and ultrasonic cavitation were applied to support and prolong oxidation reactions of ozonation. Nanobubbles increased ozone dissolution by a factor of 16 due to low buoyancy, high surface area, and stability in water. Hydroxyl radicals generated by ultrasonic cavitation produced hydrogen peroxide rather than recombining due to additional oxygen atoms supplied by the nanobubbles. The generated hydrogen peroxide formed hydroperoxyl ions that reacted with ozone to generate hydroxyl radicals. The process achieved improvements in both the loss of emitted ozone and radical recombination. Rhodamine B decomposition was used to gauge the effectiveness of the process, with the highest rhodamine B decomposition evident at a high initial pH and power and a frequency of 132 kHz as revealed in ultrasonic experiments. The process achieved more than 99% of the rhodamine B decomposition in 20 min under the most efficient conditions. The generation of hydrogen peroxide exhibited tendencies similar to those of rhodamine B decomposition, supporting the proposed mechanism. An ozonation process combined with nanobubble and ultrasonic cavitation can therefore sustain oxidizing power using continuous dissolution by nanobubbles and successive radical generation caused by hydrogen peroxide generated by cavitation.
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Affiliation(s)
- Sangbin Lee
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seoul 04763, South Korea
| | - Hassan Anwer
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seoul 04763, South Korea; Department of Environmental Engineering, National University of Sciences and Technology, H-12, Islamabad 44000, Pakistan
| | - Jae-Woo Park
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seoul 04763, South Korea.
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Liu BD, Dong HT, Rong HW, Zhang RJ. Effects and mechanism of ultrasound treatment on Chironomus kiiensis eggs. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:85482-85491. [PMID: 35796928 DOI: 10.1007/s11356-022-21856-w] [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: 11/17/2021] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
Chironomids are abundant insects in freshwater ecosystems and lay in still or slow-moving water. The walls of sedimentation tanks in drinking water treatment plants (DWTP) provide such laying habitat, which can lead to larval outbreaks in plant effluent. While chironomid larvae are often associated with poor hygiene, effective methods to control outbreaks are needed. Here, we assessed the effect of ultrasound treatment on Chironomus kiiensis' eggs. The mortality rate of eggs was examined after ultrasound treatment, and the protein content (heat shock protein 70 and hemoglobin) and enzymatic activities of acetylcholinesterase, cytochrome P450, and glutathione S-transferases involved in the ultrasound-induced stress response were analyzed before and after treatment. COMSOL software was also used to examine the characteristics of the ultrasonic field, including frequency, power, exposure distance, and time. Higher egg mortality was observed at lower frequencies. At 28 kHz, 450 W, 15-mm exposure distance, and 75-s exposure time, 72.4% of eggs showed apoptosis after exposure. At higher frequencies (68 kHz), mortality decreased to 50.9%. Exposure time and distance also significantly affected egg mortality. From the geometric models, it could be seen that C. kiiensis' eggs sustained much greater acoustic pressure (2379 Pa) with 28-kHz exposure than that with 68-kHz exposure (422 Pa); however, the propagation distance was greater at the higher frequency. The hydraulic shear force effect of the ultrasonic radiation appeared to be the primary factor in egg mortality. We expected that array of ultrasonic transducers embedded in the walls of water treatment plants could be effective in killing Chironomus' eggs and highlight the potential for ultrasound as an effective treatment for the prevention of Chironomus outbreaks in treatment plant effluents.
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Affiliation(s)
- Bo-Dong Liu
- Research Center, Guangzhou Municipal Engineering Design & Research Institute, Guangzhou, 510060, China
- International Department, The Affiliated High School of South China Normal University, Guangzhou, 510630, China
| | - Hao-Tao Dong
- Research Center, Guangzhou Municipal Engineering Design & Research Institute, Guangzhou, 510060, China.
| | - Hong-Wei Rong
- School of Civil Engineering, Guangzhou University, Guangzhou, 510060, China
| | - Rui-Jian Zhang
- Research Center, Guangzhou Municipal Engineering Design & Research Institute, Guangzhou, 510060, China
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A successful exploitation of gamma-radiation on chalcogenide Cu2InSnS4 towards clean water under photocatalysis approach. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131943] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Xu Q, Leng H, You H, Wang S, Li H, Yu Y. A novel co-catalyzed system between persulfate and chlorite by sonolysis for removing triphenylmethane derivative. J Environ Sci (China) 2022; 112:291-306. [PMID: 34955213 DOI: 10.1016/j.jes.2021.05.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 05/09/2021] [Accepted: 05/09/2021] [Indexed: 06/14/2023]
Abstract
Triphenylmethane (tpm) derivatives (e.g. tpmCV) have threatened the safety of the aquatic environment due to the potential toxicity and carcinogenicity. In this study, the novel ultrasonic/persulfate/chlorite (US/S2O82-/ClO2-) oxidation process was developed for the effective removal of tpmCV in wastewater. The apparent non-integer kinetics (n around 1.20) of tpmCV degradation under different factors (R2Adj > 0.990) were investigated, respectively. Inhibiting effects of anions were greater than those of cations (except Fe(II/III)). The adding of micromolecule organic acids could regulate degradation towards positive direction. The double response surface methodology (RSM) was designed to optimize tpmCV removal process, and the acoustic-piezoelectric interaction was simulated to determine the propagation process of acoustic wave in the reactor. The possible degradation pathway was explored to mainly include carbonylation, carboxylation, and demethylation. The estimated effective-mean temperature at the bubble-water interface was calculated from 721 to 566 K after introducing the ClO2-, however, the adsorption or partitioning capacity of tpmCV in the reactive zone was widened from 0.0218 to 0.0982. The proposed co-catalysis of US/S2O82-/ClO2- was based on the determined active species mainly including ClO2, SO4⋅-, and ⋅OH. Compared with other US-based processes, the operating cost (3.97 $/m3) of US/S2O82-/ClO2- with the EE/O value (16.8 kWh/m3) was relatively reduced.
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Affiliation(s)
- Qihui Xu
- State Key Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Haoran Leng
- State Key Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Hong You
- State Key Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology, Harbin 150090, China.; School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China.
| | - Shutao Wang
- School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Haoyang Li
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - Yibo Yu
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
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7
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Interface template synthesis of zein-based amorphous TiO2 composite microcapsules with enhanced photo-catalysis. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127534] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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8
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Combining Experimental Data with Statistical Methods to Evaluate Hydrolyzed Reactive Dye Removal by α-Fe2O3 in a Cellulose-Based Membrane. FIBERS 2021. [DOI: 10.3390/fib9100061] [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
Water contaminated with toxic dyes poses serious problems for human health and environmental ecosystems. Unfixed reactive dyes and their hydrolyzed form are soluble in water, thus, their removal is particularly challenging. Among the different methodologies, adsorption is probably the most common since it is easy to handle and has a low cost. Here, the removal by adsorption of hydrolyzed Reactive Black 5 (hydRB5) from a model wastewater through cellulose acetate/hematite membranes (CA/α-Fe2O3), designated as M1, M2 and M3, was performed. The pristine cellulose acetate membrane (CA) was designated as M0. Toward understanding the adsorption mechanism of hydRB5 on membranes, the rate of adsorption and maximum value of the adsorption capacity were evaluated using kinetic and isothermal studies, respectively. The results showed that the adsorption mechanism follows pseudo-first-order kinetics, and data are best fitted by the Langmuir isotherm method with a maximum adsorption capacity of 105.26 mg g−1 in pH~7. Furthermore, these membranes can be also regenerated by washing with NaOH and NaCl solutions, and the regeneration efficiency remains effective over five cycles. To complete the work, two statistical models were applied, an Analysis of Variance (ANOVA) and a Response Surface Methodology (RSM). The optimum value found is located in the usable region, and the experimental validation shows good agreement between the predicted optimum values and the experimental data. These composite membranes are also good candidates for the adsorption of other pollutants, even at industrial scale, due to their effective regeneration process and low production costs.
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Bößl F, Comyn TP, Cowin PI, García-García FR, Tudela I. Piezocatalytic degradation of pollutants in water: Importance of catalyst size, poling and excitation mode. CHEMICAL ENGINEERING JOURNAL ADVANCES 2021. [DOI: 10.1016/j.ceja.2021.100133] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Cao P, Hao C, Ma C, Yang H, Sun R. Physical field simulation of the ultrasonic radiation method: An investigation of the vessel, probe position and power. ULTRASONICS SONOCHEMISTRY 2021; 76:105626. [PMID: 34130190 PMCID: PMC8209746 DOI: 10.1016/j.ultsonch.2021.105626] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/02/2021] [Accepted: 06/07/2021] [Indexed: 05/24/2023]
Abstract
In this paper, the effects of ultrasonic probe position, vessel shape, and ultrasonic input power on the sound pressure distribution in the reactor were investigated by solving the Helmholtz equation using COMSOL Multiphysis@ software. Three different types of glass containers were used in the study, which are beaker, Erlenmeyer flask, and round bottom flask. The maximum value of sound pressure in the three containers will gradually increase when the distance between the probe and the bottom of the container decreases. When the distance decreases, the area of the high acoustic pressure region in the round bottom flask does not change significantly, while the area of the high acoustic pressure region in the beaker and Erlenmeyer flask increases sharply, which means that the use of the round bottom flask can reduce the influence of the dead zone on the preparation of nanomaterials. In addition, the change in power increases the value of the peak negative acoustic pressure in the vessel, enhancing the response efficiency of ultrasonic cavitation.
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Affiliation(s)
- Peilin Cao
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
| | - Changchun Hao
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
| | - Chen Ma
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
| | - Haiyan Yang
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
| | - Runguang Sun
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
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11
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Nie G, Hu K, Ren W, Zhou P, Duan X, Xiao L, Wang S. Mechanical agitation accelerated ultrasonication for wastewater treatment: Sustainable production of hydroxyl radicals. WATER RESEARCH 2021; 198:117124. [PMID: 33862388 DOI: 10.1016/j.watres.2021.117124] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/21/2021] [Accepted: 04/03/2021] [Indexed: 06/12/2023]
Abstract
Low efficiency in energy conversion has long been the bottleneck in sonochemistry-based water treatment technologies. In this work, we reported a simple and efficient strategy by introducing mechanical agitation into a low powered ultrasonic system to facilitate the production of cavitation bubbles. The coupled system remarkably intensifies the evolution of reactive oxygen species (ROS) for degradation of refractory organic pollutants. We in-situ monitored the generation of hydroxyl radicals (•OH) by selective scavenging tests and chemical trapping experiments. The operational factors such as rotation speed, gas atmosphere, solution temperature and pH were carefully evaluated for their impacts on the degradation of a plastic microcontaminant, diethyl phthalate (DEP). It was found that the degradation efficiency is closely related to the population of cavitation bubbles in the solution, which was collaboratively governed by the aforementioned factors. A high mechanical agitation speed (600 rpm), great solubility of inert gas atmosphere (Argon), and low reaction temperature (15 ºC) are beneficial to the generation of cavitation bubbles and the associated production of ROS. This work shows a facile strategy to intensify the mechanical energy-to-chemical conversion and provides new mechanistic insights into the ultrasound-based advanced oxidation without external chemical inputs.
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Affiliation(s)
- Gang Nie
- Department of Environmental Science and Engineering, Wuhan University, Wuhan, 430079, PR China; School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Kunsheng Hu
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Wei Ren
- Department of Environmental Science and Engineering, Wuhan University, Wuhan, 430079, PR China
| | - Peng Zhou
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Xiaoguang Duan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Ling Xiao
- Department of Environmental Science and Engineering, Wuhan University, Wuhan, 430079, PR China.
| | - Shaobin Wang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.
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Lu X, Qiu W, Peng J, Xu H, Wang D, Cao Y, Zhang W, Ma J. A Review on Additives-assisted Ultrasound for Organic Pollutants Degradation. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123915. [PMID: 33264967 DOI: 10.1016/j.jhazmat.2020.123915] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/26/2020] [Accepted: 09/06/2020] [Indexed: 05/15/2023]
Abstract
In the past 2 decades, considerable attentions have been paid to the sonochemical advanced oxidation processes (SAOPs) in the fields of pollutants removal. SAOPs are powerful methods for refractory pollutants degradation due to the free radicals (e.g., •OH and •H) generated by water pyrolysis and extremely high temperature and pressure in and around cavitation bubbles. Reports on various additives for the improvement of sonochemical pollutants degradation including oxidants, inorganic anions, etc. have been made. This paper presents a comprehensive review on the ultrasound (US) alone and sono-hybrid systems for various pollutants degradation. In this paper, the degradation efficiency of various pollutants in sono-hybrid systems are elucidated in detail, and particular emphasis is placed on the reaction mechanism of additives in US for the enhancement of pollutants degradation. The problems on the applications of the current sono-hybrid systems are identified and discussed, and the outlooks for further in-depth studies on the challenges and some research needs for the applications of SAOPs for the removal of organic pollutants from aquatic systems are made at the end.
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Affiliation(s)
- Xiaohui Lu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Wei Qiu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Jiali Peng
- Department of Environmental Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Haodan Xu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Da Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Ye Cao
- Department of Chemistry and Biochemistry, Queen Mary University of London, London E1 4NS, UK
| | - Wei Zhang
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
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Bhat AP, Gogate PR. Degradation of nitrogen-containing hazardous compounds using advanced oxidation processes: A review on aliphatic and aromatic amines, dyes, and pesticides. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123657. [PMID: 33264866 DOI: 10.1016/j.jhazmat.2020.123657] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/29/2020] [Accepted: 08/01/2020] [Indexed: 06/12/2023]
Abstract
Nitrogen-containing amino and azo compounds are widely used in textile, agricultural and chemical industries. Most of these compounds have been demonstrated to be resistant to conventional degradation processes. Advanced oxidation processes can be effective to mineralize nitrogen-containing compounds and improve the efficacy of overall treatment schemes. Due to a global concern for the occurrence of toxic and hazardous amino-compounds and their harmful degradation products in water, it is important to develop technologies that focus on all the aspects of their degradation. Our focus is to present a state-of-the-art review on the degradation of several amine- and azo-based compounds using advanced oxidation processes. The categories reviewed are aromatic amines, aliphatic amines, N-containing dyes and N-containing pesticides. Data has been compiled for degradation efficiencies of each process, reaction mechanisms focusing on specific attack of oxidants on N atoms, the effect of process parameters like pH, initial concentration, time of treatment, etc. and identification of intermediates. Several AOPs have been compared to provide a systematic overview of available literature that will drive essential aspects of future research on amine-based compounds. Ozone is observed to be highly reactive to most amines, dyes and pesticides, followed by Fenton processes. Degradation of amines is highly sensitive to pH and mechanisms differ at different pH values. Cavitation is a promising alternative pre-treatment method for cost reduction. Hybrid methods under optimized conditions are demonstrated to give synergistic effects and must be tailored for specific effluents in question. In conclusion, even though nitrogen-containing compounds are recalcitrant in nature, the use of advanced oxidation processes at carefully established optimum conditions can yield highly efficient degradation of the compounds.
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Affiliation(s)
- Akash P Bhat
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai, 400019, India
| | - Parag R Gogate
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai, 400019, India.
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Ye YF, Zhu Y, Lu N, Wang X, Su Z. Treatment of rhodamine B with cavitation technology: comparison of hydrodynamic cavitation with ultrasonic cavitation. RSC Adv 2021; 11:5096-5106. [PMID: 35424464 PMCID: PMC8694663 DOI: 10.1039/d0ra07727e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 01/12/2021] [Indexed: 11/22/2022] Open
Abstract
This paper presents the use of hydrodynamic cavitation and ultrasonic cavitation technologies for treating rhodamine B (RhB) in simulated wastewater. Various parameters of each technology that influence the RhB degradation rate were compared and optimized. The results showed that the optimal conditions for the hydrodynamic cavitation determined by the single-factor method were as follows: inlet pressure, 0.4 MPa; initial concentration, 10 mg L−1; reaction temperature, 30 °C; and pH value, 3. The RhB degradation rate was 38.7%. In addition, the optimal conditions for the ultrasonic cavitation determined by the response surface methodology were as follows: initial RhB concentration, 10 mg L−1; ultrasonic power, 850 W; ultrasonic time, 100 min; addition amount of H2O2, 0.6%; and pH value, 3. The RhB degradation rate was 84.06%. We also found that the degradation of RhB by both cavitation technologies conformed to the first-order kinetic reaction model. The rate constant of UC was 5.22 × 10−3 min−1 and that of HC was 4.35 × 10−3 min−1. The ultrasonic cavitation has a stronger cavitation effect than hydrodynamic cavitation. This paper presents the use of hydrodynamic cavitation and ultrasonic cavitation technologies for treating rhodamine B (RhB) in simulated wastewater.![]()
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Affiliation(s)
- Yu-Fang Ye
- College of Chemistry and Chemical Engineering, Xinjiang Normal University Urumqi 830054 China +86 0991 4333139 +86 0991 4333139
| | - Ying Zhu
- College of Chemistry and Chemical Engineering, Xinjiang Normal University Urumqi 830054 China +86 0991 4333139 +86 0991 4333139
| | - Na Lu
- College of Chemistry and Chemical Engineering, Xinjiang Normal University Urumqi 830054 China +86 0991 4333139 +86 0991 4333139
| | - Xin Wang
- College of Chemistry and Chemical Engineering, Xinjiang Normal University Urumqi 830054 China +86 0991 4333139 +86 0991 4333139
| | - Zhi Su
- College of Chemistry and Chemical Engineering, Xinjiang Normal University Urumqi 830054 China +86 0991 4333139 +86 0991 4333139
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Patil VV, Gogate PR, Bhat AP, Ghosh PK. Treatment of laundry wastewater containing residual surfactants using combined approaches based on ozone, catalyst and cavitation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116594] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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