1
|
Patil Y, Sonawane SH, Shyam P, Sun X, Manickam S. Hybrid hydrodynamic cavitation (HC) technique for the treatment and disinfection of lake water. ULTRASONICS SONOCHEMISTRY 2023; 97:106454. [PMID: 37271031 DOI: 10.1016/j.ultsonch.2023.106454] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/18/2023] [Accepted: 05/22/2023] [Indexed: 06/06/2023]
Abstract
Water reclamation from lakes needs to be accomplished efficiently and affordably to ensure the availability of clean, disinfected water for society. Previous treatment techniques, such as coagulation, adsorption, photolysis, ultraviolet light, and ozonation, are not economically feasible on a large scale. This study investigated the effectiveness of standalone HC and hybrid HC + H2O2 treatment techniques for treating lake water. The effect of pH (3 to 9), inlet pressure (4 to 6 bar), and H2O2 loading (1 to 5 g/L) were examined. At pH = 3, inlet pressure of 5 bar and H2O2 loadings of 3 g/L, maximum COD and BOD removal were achieved·H2O2 was observed to significantly improve the performance of the HC when used as a chemical oxidant. In an optimal operating condition, a COD removal of 54.5 % and a BOD removal of 51.5 % using HC alone for 1 h is observed. HC combined with H2O2 removed 64 % of both COD and BOD. The hybrid HC + H2O2 treatment technique resulted in a nearly 100% removal of pathogens. The results of this study indicate that the HC-based technique is an effective method for removing contaminants and disinfection of the lake water.
Collapse
Affiliation(s)
- Yogesh Patil
- Department of Chemical Engineering, National Institute of Technology Warangal, Telangana 506004, India
| | - Shirish H Sonawane
- Department of Chemical Engineering, National Institute of Technology Warangal, Telangana 506004, India.
| | - Perugu Shyam
- Department of Biotechnology, National Institute of Technology Warangal, Telangana 506004, India
| | - Xun Sun
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, China.
| | - Sivakumar Manickam
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan BE1410, Brunei Darussalam
| |
Collapse
|
2
|
Wang B, Liu Y, Zhang H, Shi W, Xiong M, Gao C, Cui M. Hydrodynamic cavitation and its application in water treatment combined with ozonation: A review. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.07.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
3
|
Abramov VO, Abramova AV, Cravotto G, Nikonov RV, Fedulov IS, Ivanov VK. Flow-mode water treatment under simultaneous hydrodynamic cavitation and plasma. ULTRASONICS SONOCHEMISTRY 2021; 70:105323. [PMID: 32911356 PMCID: PMC7786523 DOI: 10.1016/j.ultsonch.2020.105323] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 08/01/2020] [Accepted: 08/27/2020] [Indexed: 05/07/2023]
Abstract
Over the last two decades, the scientific community and industry have made huge efforts to develop environmental protection technologies. In particular, the scarcity of drinking water has prompted the investigation of several physico-chemical treatments, and synergistic effects have been observed in hyphenated techniques. Herein, we report the first example of water treatment under simultaneous hydrodynamic cavitation and plasma discharge with the intense generation of radicals, UV light, shock waves and charged particles. This highly reactive environment is well suited to the bulk treatment of polluted water (i.e. E. coli disinfection and organic pollutant degradation). We have developed a new prototype and have efficiently applied this hybrid technology to water disinfection and the complete degradation of methanol in water with the aim of demonstrating its scalability. We have analyzed the mechanisms of water disinfection under the abovementioned conditions and verified them by measuring cavitation noise spectra and plasma emission spectra. We have also used the degradation of textile dyes and methanol solutions as an indicator for the formation of radicals.
Collapse
Affiliation(s)
- Vladimir O Abramov
- Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskiy prospekt 31, 119991 Moscow, Russia
| | - Anna V Abramova
- Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskiy prospekt 31, 119991 Moscow, Russia.
| | - Giancarlo Cravotto
- Department of Drug Science and Technology, University of Turin, via P. Giuria 9, 10125 Turin, Italy; Sechenov First Moscow State Medical University, 8 Trubetskaya ul, 119991 Moscow, Russia.
| | - Roman V Nikonov
- Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskiy prospekt 31, 119991 Moscow, Russia
| | - Igor S Fedulov
- Moscow Polytechnic University, Bolshaya Semyonovskaya ul., 38, 107023 Moscow, Russia
| | - Vladimir K Ivanov
- Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskiy prospekt 31, 119991 Moscow, Russia
| |
Collapse
|
4
|
Hu Z, Li D, Guan D. Water quality retrieval and algae inhibition from eutrophic freshwaters with iron-rich substrate based ecological floating beds treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 712:135584. [PMID: 31791781 DOI: 10.1016/j.scitotenv.2019.135584] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/30/2019] [Accepted: 11/15/2019] [Indexed: 06/10/2023]
Abstract
Ecological floating rafts in restoration of eutrophic freshwaters were deemed to a frequently used method. In this study, a manipulative experiment using ecological floating rafts based on iron-rich substrate (IRS) was conducted. The approach was attempted to study the nutrient removal efficiency and algae inhibition effect of IRS. The results showed that 98.2% chlorophyll-a (chl-a) removal rate was achieved in 7-day restoration by IRS accompanied with high nutrient removal efficiency. In addition, iron-rich substrate based ecological floating beds could reached 82.1% chl-a removal rate and 98.5% total phosphorus (TP) removal rate with the increasing activity of aquatic organisms through a 50-day pilot scale experiment. The findings imply that iron-rich substrate-based ecological floating beds are an alternative method for ecological restoration of eutrophic freshwaters.
Collapse
Affiliation(s)
- Zhifeng Hu
- School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, PR China.
| | - Desheng Li
- School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, PR China; Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing 100044, PR China.
| | - Detian Guan
- Beijing Management Division of North Grand Canal, 101100 Beijing, PR China
| |
Collapse
|
5
|
Wu Z, Tagliapietra S, Giraudo A, Martina K, Cravotto G. Harnessing cavitational effects for green process intensification. ULTRASONICS SONOCHEMISTRY 2019; 52:530-546. [PMID: 30600212 DOI: 10.1016/j.ultsonch.2018.12.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/11/2018] [Accepted: 12/21/2018] [Indexed: 06/09/2023]
Abstract
The impressive chemico-physical effects observed in sonochemistry are a result of cavitation, as ultrasonic and hydrodynamic cavitation does not interact with matter at the atomic and molecular levels. Bubble collapse leads to the quasi-adiabatic heating of the vapour inside bubbles, giving rise to local hot spots in the fluid. Cavitation thus transforms a mechanical energy into high kinetic energy, which is released in very short bursts that are exploited for green process intensification. This paper reviews relevant applications of hydrodynamic and acoustic cavitation with the aim of highlighting the particular advantages that these phenomena offer to the intensification of green chemical processes. Emulsification, biodiesel preparation, wastewater decontamination, organic synthesis, enzymatic catalysis and extractions are discussed among others. As a comparison, hydrodynamic cavitation technique is more advantageous in dealing with process intensification at large-scale, as well as the enhancement of mass transfer and heat transfer, while ultrasonic cavitation technique is more convenient to operate, easier to control in the studies at lab-scale, and exhibits more efficient in producing active free radicals and inducing the cleavage of volatile compounds.
Collapse
Affiliation(s)
- Zhilin Wu
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin 10125, Italy
| | - Silvia Tagliapietra
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin 10125, Italy
| | - Alessadro Giraudo
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin 10125, Italy
| | - Katia Martina
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin 10125, Italy
| | - Giancarlo Cravotto
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin 10125, Italy.
| |
Collapse
|
6
|
Treatment of Eutrophic Water and Wastewater from Valsequillo Reservoir, Puebla, Mexico by Means of Ozonation: A Multiparameter Approach. WATER 2018. [DOI: 10.3390/w10121790] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The present work aims to elucidate the possibility of injecting ozone into surface waters combined with urban wastewaters in order to improve the water quality of the High Atoyac Sub-basin (HAS) in Central Mexico. For this purpose, twenty physicochemical parameters, eight heavy metals, seven organic compounds, and one biological indicator were assessed in water from different sites of the studied area (the Alseseca River, the Atoyac River and the Valsequillo Reservoir). Results demonstrated that O3 injection led to the decrease of the aromatic fraction of organic molecules since the Spectral Absorption Coefficient at 254 nanometers (SAC254) reduction was found to be 31.7% in the Valsequillo Reservoir water samples. Maximum Chemical Oxygen Demand (COD) removal was observed to be 60.2% from the Alseseca River with a 0.26 mg O3/mg initial COD dose. Among all the phthalates studied in the present work, Di(2-ethylhexyl) phthalate (DEHP) exhibited the highest concentration (5.8 μg/L in the Atoyac River). Treatment with O3 was not effective in eliminating fecal coliforms (FC) in waters that host high organic matter (OM) loads as opposed to waters with low OM. After the injection of 4.7 mg O3/mg COD in the VO3-AT water sample, a 90% removal of Iron (Fe) and Aluminum (Al) was registered; while Manganese (Mn), Nickel (Ni), Zinc (Zn), and Cooper (Cu) showed a 73%, 67%, 81%, and 80% removal, respectively; Chromium (Cr) registered the highest removal (~100%). The present work demonstrated that while finding a suitable O3 dose to improve the quality of water in the HAS, the 5-days Biochemical Oxygen Demand (BOD5)/COD ratio (i.e., biodegradability) is more important than the overall OM removal percentage proving that O3 injection is a feasible process for the treatment of eutrophic waters from HAS.
Collapse
|
7
|
Affiliation(s)
- Ulker D. Keris-Sen
- Department of Environmental Engineering, Gebze Technical University, Gebze, Kocaeli, Turkey
| | - Unal Sen
- Department of Environmental Engineering, Gebze Technical University, Gebze, Kocaeli, Turkey
| | - Mirat D. Gurol
- Department of Environmental Engineering, Gebze Technical University, Gebze, Kocaeli, Turkey
| |
Collapse
|
8
|
Zhang J, Wang H. Study on mechanism of algal inactivation and pollution removal by Fe-ACF electro Fenton-like process. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2015; 72:1700-1712. [PMID: 26540530 DOI: 10.2166/wst.2015.388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Algae inactivation and algal metabolic pollutant removal of Chlorella and Duneliella salina from seawater by the Fe-ACF electro Fenton-like process has been studied. The experiments were conducted at neutral condition of pH 8.3 (raw water) and 6.2 to break through the limit of strong acidic conditions. Experimental results indicated that the Fe-ACF electro Fenton-like process has a good effect for algae inactivation and for pollutant removal in neutral conditions, and pH has no obvious effect for the inactivation of algae. At optimum conditions, the inactivation efficiency for algae could reach up to 98%. A pH of 8.3 is more favorable for pollutant removal. Under neutral pH conditions, the coupling effect of indirect oxidation of •OH, direct oxidation of free chlorine and coagulation and adsorption of ferric and ferrous hydroxy complexes in the electro Fenton-like process was achieved, and the coupling effect promotes the inactivation of algae and the removal of metabolic pollutants.
Collapse
Affiliation(s)
- Jin Zhang
- School of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China E-mail:
| | - Huan Wang
- School of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China E-mail:
| |
Collapse
|