02576nas a2200325 4500008004100000022001400041245007800055210006900133260006900202300001200271490000700283520148100290653002001771653001801791653002801809653001401837653002501851653001601876100002901892700002701921700002601948700002001974700002301994700002502017700001902042700002602061700002702087700003402114856010202148 2008 eng d a1369-703X00aEffect of hydrodynamic cavitation on zooplankton: a tool for disinfection0 aEffect of hydrodynamic cavitation on zooplankton a tool for disi aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcDEC a320-3280 v423 a

Application of hydrodynamic cavitation for disinfection of water is gaining momentum, as it provides environmentally and economically sound options. In this effort, the effect of cavitating conditions created by differential pump valve opening and that created by flowing through a cavitating element (orifice plates) on the microbes (zooplankton in sea water) is described. The experimental results are compared with modelling of cavitating conditions that includes cavity dynamics, turbulence generated by individual oscillating cavity, cell wall strength and geometrical and operating parameters of cavitation device. Theoretical model for quantifying the cavitationally generated turbulent shear and extent of microbial disinfection has been developed. Experimental results indicated that cavitation and/or turbulent fluid shear dominantly originating from cavitation are effective tools for sea water disinfection as more than 80% of the zooplankton present in the sea water were killed. It was also observed that shock waves generated due to cavitation is not the sole cause for zooplankton disruption. A correct physical mechanism accounting fluid turbulence and shear, generated from stable oscillation of cavity, significantly contribute towards the disruption. Further refinement of the model presented will serve as a basis for higher degree of disinfection and provide a practical tool for sea water disinfection. (C) 2008 Elsevier B.V. All rights reserved.

10aCell disruption10aheat transfer10aHydrodynamic cavitation10aModelling10aWastewater treatment10aZooplankton1 aSawant, Subhash, Shivram1 aAnil, Arga, Chandrashe1 aKrishnamurthy, Venkat1 aGaonkar, Chetan1 aKolwalkar, Janhavi1 aKhandeparker, Lidita1 aDesai, Dattesh1 aMahulkar, Amit, Vinod1 aRanade, Vivek, Vinayak1 aPandit, Aniruddha, Balchandra uhttps://library.ncl.res.in/content/effect-hydrodynamic-cavitation-zooplankton-tool-disinfection-002386nas a2200265 4500008004100000022001400041245013800055210006900193260007300262300001200335490000800347520139300355653003301748653002801781653001701809653002701826653001201853100002401865700002901889700001901918700002201937700001801959700002201977856012101999 2013 eng d a0304-389400aSynergetic effect of combination of AOP's (hydrodynamic cavitation and H2O2) on the degradation of neonicotinoid class of insecticide0 aSynergetic effect of combination of AOPs hydrodynamic cavitation aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT a139-1470 v2613 a

In the present work, degradation of imidacloprid (neonicotinoid class of insecticide) in aqueous solution has been systematically investigated using hydrodynamic cavitation and combination of hydrodynamic cavitation (HC) and H2O2. Initially, effect of different operating parameters such as inlet pressure to the cavitating device (5-20 bar) and operating pH (2-7.5) has been investigated. Optimization of process parameters was followed by the study of effect of combination of HC and H2O2 process on the rate of degradation of imidacloprid. Significant enhancement in the rate of degradation of imidacloprid has been observed using HC+H2O2 process which lead to a complete degradation of imidacloprid in 45 min of operation using optimal molar ratio of imidacloprid:H2O2 as 1:40. Substantial synergetic effect has been observed using HC+H2O2 process which confer the synergetic coefficient of 22.79. An attempt has been made to investigate and compare the energy efficiency and extent of mineralization of individual and combined processes applied in the present work. Identification of the byproducts formed during degradation of imidacloprid has also been done using LC-MS analysis. The present work has established a fact that hydrodynamic cavitation in combination with H2O2 can be effectively used for degradation of imidacloprid. (C) 2013 Elsevier B.V. All rights reserved.

10aAdvanced oxidation processes10aHydrodynamic cavitation10aImidacloprid10aSynergetic coefficient10aVenturi1 aRaut-Jadhav, Sunita1 aSaharan, Virendra, Kumar1 aPinjari, Dipak1 aSonawane, Shirish1 aSaini, Daulat1 aPandit, Aniruddha uhttps://library.ncl.res.in/content/synergetic-effect-combination-aops-hydrodynamic-cavitation-and-h2o2-degradation-002572nas a2200241 4500008004100000022001400041245015400055210006900209260007300278300001200351490000700363520163200370653004002002653002802042653001302070653002702083653001202110100002402122700001802146700002202164700002202186856012202208 2016 eng d a1350-417700aEffect of process intensifying parameters on the hydrodynamic cavitation based degradation of commercial pesticide (methomyl) in the aqueous solution0 aEffect of process intensifying parameters on the hydrodynamic ca aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJAN a283-2930 v283 a

Methomyl, a carbamate pesticide, is classified as a pesticide of category-1 toxicity and hence shows harmful effects on both human and aquatic life. In the present work, the degradation of methomyl has been studied by using hydrodynamic cavitation reactor (HC) and its combination with intensifying agents such as H2O2, fenton reagent and ozone (hybrid processes). Initially, the optimization of operating parameters such pH and inlet pressure to the cavitating device (circular venturi) has been carried out for maximizing the efficacy of hydrodynamic cavitation. Further degradation study of methomyl by the application of hybrid processes was carried out at an optimal pH of 2.5 and the optimal inlet pressure of 5 bar. Significant synergetic effect has been observed in case of all the hybrid processes studied. Synergetic coefficient of 5.8, 13.41 and 47.6 has been obtained by combining hydrodynamic cavitation with H2O2, fenton process and ozone respectively. Efficacy of individual and hybrid processes has also been obtained in terms of energy efficiency and extent of mineralization. HC + Ozone process has proved to be the most effective process having highest synergetic coefficient, energy efficiency and the extent of mineralization. The study has also encompassed the identification of intermediate by-products generated during the degradation and has proposed the probable degradation pathway. It has been conclusively established that hydrodynamic cavitation in the presence of intensifying agents can effectively be used for complete degradation of methomyl. (C) 2015 Elsevier B.V. All rights reserved.

10aAdvanced Oxidation Processes (AOPs)10aHydrodynamic cavitation10aMethomyl10aSynergetic coefficient10aVenturi1 aRaut-Jadhav, Sunita1 aSaini, Daulat1 aSonawane, Shirish1 aPandit, Aniruddha uhttps://library.ncl.res.in/content/effect-process-intensifying-parameters-hydrodynamic-cavitation-based-degradation-002597nas a2200277 4500008004100000022001400041245015200055210006900207260006900276300001200345490000800357520155100365653002701916653002801943653002201971653003401993653001002027653001202037100002402049700002202073700002302095700002202118700002602140700002602166856012702192 2016 eng d a1385-894700aTreatment of the pesticide industry effluent using hydrodynamic cavitation and its combination with process intensifying additives (H2O2 and ozone)0 aTreatment of the pesticide industry effluent using hydrodynamic  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcJUL a326-3350 v2953 a

Hydrodynamic cavitation (HC) and its combination with H2O2 and ozone have been applied in the present work for the treatment of industrial pesticide effluent. Initially, the effect of dilution of the effluent on the efficacy of hydrodynamic cavitation has been studied using circular venturi as a cavitator. Although an increase in the extent of dilution has not shown any beneficial effect on the actual moles of pollutant degraded, hybrid processes have been studied using 1:5 dilution due to very high TDS content of the effluent. Treatment of the industrial pesticide effluent using HC + ozone (3 gbh) process has demonstrated that the biodegradability index (BI) of the effluent increases from 0.123 to 0.324 after 2 h of operation. The rate of COD and TOC reduction has also increased by many folds by using HC in combination with ozone. In addition this, the treatment of industrial pesticide effluent using HC + H2O2 has also indicated that the rate of COD and TOC reduction increases significantly by using HC in combination with various loadings of H2O2. The study of interference of added H2O2 on the COD analysis has exhibited that the COD equivalence is 0.441 mg/L for 1 mg/L of H2O2. The energy efficiency and operating cost of various hybrid processes have been compared based on the cavitational yield and the cost of electricity. The combined process of HC and H2O2 has observed to be the most cost-effective one due to its higher cavitational yield and lower power consumption. (C) 2016 Elsevier B.V. All rights reserved.

10aBiodegradability index10aHydrodynamic cavitation10aHydrogen peroxide10aIndustrial pesticide effluent10aOzone10aVenturi1 aRaut-Jadhav, Sunita1 aBadve, Mandar, P.1 aPinjari, Dipak, V.1 aSaini, Daulat, R.1 aSonawane, Shirish, H.1 aPandit, Aniruddha, B. uhttps://library.ncl.res.in/content/treatment-pesticide-industry-effluent-using-hydrodynamic-cavitation-and-its-combination02582nas a2200253 4500008004100000022001400041245020300055210006900258260000800327300001100335490000700346520160900353653003101962653002801993653001902021653002802040653002302068100002402091700002202115700001902137700002402156700002302180856012502203 2022 eng d a2214-714400aDesign of hydrodynamic cavitation assisted intensified tertiary treatment unit for effective degradation of organic micropollutants in pharmaceutical industrial effluent: a case study with triclosan0 aDesign of hydrodynamic cavitation assisted intensified tertiary  cOCT a1031320 v493 a

Increasing occurrence of micropollutants and trace amount of persistent organic contaminants (POC's) in the wastewater streams even after the well-established conventional treatment is a threat to human health, aquatic entities, and constitute a formidable challenge for the ecological security. In this regard, hydrodynamic cavi-tation based advanced oxidation treatment has attracted extensive attention towards removal of such micro scale pollutants from wastewater streams in the present scenario. Hence, the present work demonstrates the design and application of a rotating hydrodynamic cavitation (RHC) reactor with stator-rotor arrangement for effective degradation of organic micropollutants (triclosan being taken as the target pollutant) from tertiary effluents occurring in the pharmaceutical sector. The process performance was evaluated through optimization of geo-metric parameters of the reactor, various operating parameters as well as by studying the sole and synergistic performance of the HC process combined with other AOPs. The maximum degradation of Triclosan (TCS) ach-ieved by RHC alone was found to be 35.2 % and in synergism, with ozone, a maximum of 97.6 % degradation was observed. Further, to ensure the mineralization of the components, total organic carbon (TOC) contents of the samples were measured and the degradation pathway was predicted through LC-MS analysis. The techno-economic feasibility of the process were understood through economic and energetic analysis and technology transfer was done for replicating the same study for a pilot scale reactor.

10aAdvanced oxidation process10aHydrodynamic cavitation10aMicropollutant10aPharmaceutical effluent10aTertiary treatment1 aMishra, Birupakshya1 aMukherjee, Anupam1 aMullick, Aditi1 aBhandari, Vinay, M.1 aMoulik, Siddhartha uhttps://library.ncl.res.in/content/design-hydrodynamic-cavitation-assisted-intensified-tertiary-treatment-unit-effective02494nas a2200217 4500008004100000022001400041245010600055210006900161260000900230300001100239490000800250520173000258653002401988653002802012653001402040653002202054653002502076100002202101700002402123856012902147 2022 eng d a0301-479700aSolvent-assisted cavitation for enhanced removal of organic pollutants - degradation of 4-aminophenol0 aSolventassisted cavitation for enhanced removal of organic pollu cJUN  a1148570 v3113 a

A new approach of solvent-assisted cavitation process was proposed for degradation of organic pollutants. The process envisages the use of suitable solvent as an additive, (1-5% v/V), in the conventional cavitation process to enhance the pollutant removal efficiency. A proof of concept was provided for the removal of ammoniacal nitrogen with significantly improved efficiency using solvent-assisted hydrodynamic cavitation (HC) compared to conventional HC. The efficacy of the process was studied on a pilot plant scale (1 m(3)/h) and using vortex flow based vortex diode as a cavitating device. Degradation studies were carried out using a model pollutant, 4-amino phenol and four different solvents as additives, 1-octanol, cyclohexanol, 1-octane and toluene. Relatively polar solvents were found to increase the efficiency of the pollutant removal (> 65%) and also increase the rates to an extent of more than 200%, compared to only HC. A very high removal of ammoniacal nitrogen, more than 90%, was obtained for solvents 1-octanol and cyclohexanol, indicating the importance of the selection of solvent. Per pass degradation model showed 3 to 4 times increase in the per pass degradation for polar solvents compared to cavitation alone. The results confirm no role of conventional solvent extraction and no specific contamination of wastewater due to the use of solvent as an additive in the process. Further, the cost was 2-3 times lower as compared to the conventional HC. The interesting observations in the proposed process can fuel further research to provide possible improvements in existing methodologies of wastewater treatment, in general, and for removal of ammoniacal nitrogen, in particular.

10aAmmoniacal nitrogen10aHydrodynamic cavitation10aOxidation10aPollution Control10aWastewater treatment1 aPatil, Pravin, B.1 aBhandari, Vinay, M. uhttps://library.ncl.res.in/content/solvent-assisted-cavitation-enhanced-removal-organic-pollutants-degradation-4-aminophenol02254nas a2200265 4500008004100000022001400041245012600055210006900181260000800250300001100258490000700269520136700276653002501643653002801668653001401696653001001710653001501720653002701735100002001762700002201782700001901804700001901823700001901842856012701861 2023 eng d a2213-292900aComparative evaluation of advanced oxidation processes (AOPs) for reducing SARS-CoV-2 viral load from campus sewage water0 aComparative evaluation of advanced oxidation processes AOPs for  cJUN a1096730 v113 a

Presence of SARS-CoV-2 in wastewater is a major concern as the wastewater meets rivers and other water bodies and is used by the population for various purposes. Hence it is very important to treat sewage water in an efficient manner in order to reduce the public health risk. In the present work, various advanced oxidation processes (AOPs) have been evaluated for disinfection of SARS-CoV-2 from sewage water collected from STP inlet of academic institutional residential. The sewage water was subjected to ten AOPs, which include Ozone (O3), Hydrodynamic cavitation (HC), Ultraviolet radiation (UV), and their hybrid combinations like HC/O3, HC/O3/ H2O2, HC/H2O2, O3/UV, UV/H2O2, UV/H2O2/O3, and O3/H2O2 to reduce SARS-CoV-2 viral load. Further, AOP treated sewage water was subjected to total nucleic acid isolation followed by RT-qPCR for viral load estimation. The sewage water treatment techniques were evaluated based on their viral concentration-reducing efficiency. It was found that ozone and ozone-coupled hybrid AOPs showed the most promising result with more than 98 % SARS-CoV-2 viral load reducing efficiency from sewage water. Interestingly, the best six AOPs used in this study significantly reduced both the SARS-CoV-2 and PMMoV (faecal indicator) viral load and improved water quality in terms of increasing DO and decreasing TOC.

10aAOPs and hybrid AOPs10aHydrodynamic cavitation10aOzonation10aPMMoV10aSARS-CoV-210aSewage water treatment1 aPramanik, Rinka1 aBodawar, Narendra1 aBrahme, Aashay1 aKamble, Sanjay1 aDharne, Mahesh uhttps://library.ncl.res.in/content/comparative-evaluation-advanced-oxidation-processes-aops-reducing-sars-cov-2-viral-load02133nas a2200241 4500008004100000022001400041245008500055210006900140260000800209300001200217490000800229520136500237653002801602653001401630653001401644653001201658653001501670653002501685100001701710700002001727700002401747856012001771 2023 eng d a0263-876200aImproving hydrodynamic cavitation using newer surface-coated cavitation reactors0 aImproving hydrodynamic cavitation using newer surfacecoated cavi cNOV a238-2510 v1993 a

Surface-coated cavitation devices, vortex diode (SCVD) have been reported for the first time for enhancing efficiency of hydrodynamic cavitation (HC). Two surface-coated cavitation reactors using coating of copper and nickel (-50 mu m) were evaluated, also comparing results with conventional reactor vortex diode. The proof of concept is successfully demonstrated for complete degradation of two model organic pollutants, antibioticscephalexin (CFX) and ciprofloxacin (CIP). The surface-coated reactors provide dual activity, and the catalytic effect is highly pronounced with process intensification using H2O2 and/ or pH alternations. Integration of SCVD, pH and H2O2 was the most effective strategy. Complete degradation of the antibiotics was achieved within minutes with H2O2 (-1000 molar ratio) for both Cu and Ni-surface-coated cavitation reactors compared to lower degradation of-19% for CFX and-37% for CIP using only HC. An excellent enhancement of over 300% for CFX degradation at pH 11 and-170% for CIP degradation at pH 4 was obtained. Huge enhancements in per-pass degradation and cavitational yields (up to 400 times) clearly highlight the utility of the surface-coated cavitation reactors in various applications and for cost-effectiveness.(c) 2023 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.

10aHydrodynamic cavitation10aOxidation10apollution10aReactor10aTechnology10aWastewater treatment1 aDixit, Divya1 aThanekar, Pooja1 aBhandari, Vinay, M. uhttps://library.ncl.res.in/content/improving-hydrodynamic-cavitation-using-newer-surface-coated-cavitation-reactors02131nas a2200229 4500008004100000022001400041245013700055210006900192260000800261490000700269520126900276653003801545653003201583653003201615653001601647653002801663100002201691700001801713700001901731700002301750856012801773 2024 eng d a0930-751600aEnhanced degradation of ciprofloxacin hydrochloride using hybrid advanced oxidation process of hydrodynamic cavitation and ozonation0 aEnhanced degradation of ciprofloxacin hydrochloride using hybrid cOCT0 v473 a

The degradation of ciprofloxacin hydrochloride (CFX), an extensively utilized antibiotic for bacterial infections, has been studied through the application of advanced oxidation processes (AOPs) including hydrodynamic cavitation (HC), ozonation (O3), the Fenton reaction, chemical oxidation, and hybrid AOPs such as HC/O3 and Fenton/O3. Among these, the hybrid combination of HC/O3 demonstrated the highest CFX degradation of 99.82 % within 180 min having an initial concentration of 1000 ppm. The optimization of the HC/O3 process was conducted by varying parameters including initial concentration, pH, ozone (O3) gas flowrate, and temperature. Throughout the degradation process, CFX underwent intermediate formation, which gradually degraded over time. The hydrodynamic cavitation (HC) in combination with ozone, referred to as the HC/ozonation process, was used for the degradation of ciprofloxacin hydrochloride present in wastewater. This process underwent optimization with respect to various reaction parameters, including the initial concentration, ozone flow rate, pH level, temperature, the influence of ions, and the specific water matrix. At these optimized conditions a degradation efficiency of 99.82 % was achieved after 180 min. image

10aactive pharmaceutical ingredients10aAdvance Oxidation Processes10aCiprofloxacin hydrochloride10aHybrid AOPs10aHydrodynamic cavitation1 aBodawar, Narendra1 aShetty, Rohit1 aKamble, Sanjay1 aKulkarni, Prashant uhttps://library.ncl.res.in/content/enhanced-degradation-ciprofloxacin-hydrochloride-using-hybrid-advanced-oxidation-process