Acoustic cavitation for the process intensification of biological oxidation of CETP effluent containing mainly pharmaceutical compounds: Understanding into effect of parameters and toxicity analysis

Lakshmi, N.J.; Gogate, Parag R.; Pandit, Aniruddha B.

doi:10.1016/j.ultsonch.2023.106524

Cited by 5 publications

(5 citation statements)

References 36 publications

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“…A similar trend in degradation was observed in the available literature. [ 31–33 ] Guo et al studied the degradation of the antibiotic drug levofloxacin using intensified sonochemical degradation with CCl 4 where the initial drug concentration was varied in a range of 10 to 40 mg/L at a constant CCl 4 loading of 0.02 mL. It was elucidated that with the increase in the levofloxacin concentration, the extent of degradation reduced from 98.9% to 26.2%.…”

Section: Resultsmentioning

confidence: 99%

“…This approach can hence intensify the contaminant removal and overall treatment efficiency. [ 32 ] SR‐AOP are also reported to be effective in degrading antibiotics in water treatment [ 45 ] and hence the selection of KPS as oxidant in the present work is justified. The effect of AC + KPS on CIP degradation was explored at varying KPS loading from 50 to 200 mg/L.…”

Section: Resultsmentioning

confidence: 99%

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Treatment of wastewater containing ciprofloxacin using the hybrid treatment approach based on acoustic cavitation

Lakshmi,

Iyer,

Gogate

2024

Can J Chem Eng

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The present work investigates the treatment of wastewater containing an antibiotic, ciprofloxacin (CIP), using acoustic cavitation (AC) coupled with other advanced oxidation processes (AOPs). For the laboratory scale degradation study, operating parameters like drug concentration, operating pH, and initial temperature were initially optimized and then used in hybrid approach of AC in combination with AOPs. At 15 m/L initial drug concentration, neutral pH of 7, and ambient temperature of 30°C, optimum CIP degradation of 13.66% was obtained within 120 min of operation. The intensification of the AC‐based approach was subsequently achieved using other oxidants like H2O2, potassium persulphate (KPS), and O3. The combination of AC with H2O2 and KPS resulted in 44.30% and 35.41% CIP degradation, respectively, while AC combined with ozone resulted in almost complete degradation of CIP within 90 min of treatment with a maximum cavitational yield of 4.761 × 10−6 mg/J. The cost estimation for the optimized treatment approaches revealed that AC combined with ozone is the best process for degradation with the least operational cost of 8.7 Rs/L (105 US $/m3). Complete degradation of CIP with AC + O3 based approach at much lower costs opens a window for implementation in the pharmaceutical industries.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Treatment of wastewater containing ciprofloxacin using the hybrid treatment approach based on acoustic cavitation

Lakshmi,

Iyer,

Gogate

2024

Can J Chem Eng

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“…In their study, Lakshmi et al [92] also conducted a cost estimation analysis of acoustic cavitation as a means of wastewater treatment. The findings indicated that the utilization of acoustic cavitation in the process incurs greater costs compared to alternative AOPs, such as ozonation, O 3 /H 2 O 2 , and UV/H 2 O 2 .…”

Section: Economic Feasibilitymentioning

confidence: 99%

Hydrodynamic Cavitation and Advanced Oxidation for Enhanced Degradation of Persistent Organic Pollutants: A Review

Yeneneh,

Al Balushi,

Jafary

et al. 2024

Sustainability

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Water pollution has become a major environmental menace due to municipal and industrial effluents discharged into water bodies. Several processes have been devised for the treatment and disposal of wastewater and sludge. Yet, most of the conventional technologies do not meet the requirements of sustainability as they impose a higher load on the environment in terms of resource depletion and toxic waste generation. Recently, sustainable innovative technologies, like hydrodynamic cavitation (HC), have emerged as energy-efficient methods, which can enhance the conventional wastewater treatment processes. HC is a very effective technique for the intensification of processes, like aeration, activated sludge treatment, and anaerobic digestion processes in conventional wastewater treatment plants, particularly for the enhanced degradation of persistent pollutants. On the other hand, advanced oxidation is a proven enhancement method for wastewater treatment. This review provides a comprehensive overview of recently published literature on the application of HC for the treatment of persistent organic pollutants. The potential synergistic impact of HC coupled with advanced oxidation and alternative pre-treatment methods was also reviewed in this study. Moreover, an overview of the present state of model-based research work for HC reactors and a feasibility analysis of various advanced oxidation process is also covered. Options for the pilot-to-large scale implementation of HC and advanced oxidation technologies to ensure the better sustainability of wastewater treatment plants are recommended.

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“…Considering this analysis, the current work focused on using ultrasound-based oxidation approaches for the treatment of commercial effluent containing NH 4 SCN as the major contaminant. As individual ultrasound-based techniques are energy-intensive and less efficient especially at high concentration of pollutants, 13 the combination of US with oxidants (O 3 , H 2 O 2 ) and catalysts (TiO 2 ) has been applied in the current work as the combination approaches can offer an economical, sustainable, and promising treatment method. 14 Overall, the focus of this article is on assessing the efficacy of ultrasound (US)-based novel treatment approaches in combination with catalytic ozonation for degradation of ammonium thiocyanate present in the REI effluent.…”

Section: Introductionmentioning

confidence: 99%

“…Jawale and Gogate 29 reported an increase in COD reduction of water containing potassium thiocyanate for the combination of ozone with hydrodynamic cavitation (HC) with actual value as 71.06% compared to only 5.63% for the individual approach. Lakshmi et al 13 also elucidated that the reduction in COD of real pharmaceutical effluent increased from 9.47% for the only US to 51.88% for the US + Ozone combination. Song et al 43 elucidated similar beneficial results for aniline degradation using the combination of ultrasound and ozone.…”

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confidence: 98%

Ultrasound-Assisted Catalytic Ozonation-Based Treatment of Rare-Earth Processing Effluent Containing Ammonium Thiocyanate (NH₄SCN)

Vashishtha,

Bagal,

Iyer

et al. 2024

Ind. Eng. Chem. Res.

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The production of commercially important rare-earth elements in significant proportions also leads to the problem of industrial effluents containing metal oxides, cyanides, etc. generated from mining, mineral processing, and metallurgical operations. In the current work, ultrasound (US)-based methods are used for treatment of commercially obtained effluent from rare-earth metal processing industry containing ammonium thiocyanate (NH4SCN) as a major target contaminant. The effect of operating parameters as pH (actual values as 1, 3, 7, 9, 12), H2O2 loading (800 to 1400 ppm), O3 flow rate (0.5 to 2 L/min), and catalyst type (TiO2 or MnO2 at fixed loading of 1 g/L) on the efficacy of treatment was studied. The treatment of effluent using the approaches of US and ozone (flow rate as 0.5 L/min) alone under the constant conditions of 120 W and 70% duty cycle showed no chemical oxidation demand (COD) reduction; however, it was significantly improved on combination giving 54.83% reduction. Under optimized conditions, the approach of US + O3 at flow rate of 0.5 L/min and pH of 12 combined with H2O2 (1200 ppm) and catalyst TiO2 (1g/L) gave still higher COD reduction as 64.28% and 69.45%, respectively. The degradation of the contaminants using the US-based approaches followed a first-order kinetic mechanism, and a comparison of different approaches has been presented based on rate constants. Overall, it has been demonstrated that combined treatments based on US + O3 in the presence of catalyst can be an effective method for treatment of effluent obtained from rare-earth processing.

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Acoustic cavitation for the process intensification of biological oxidation of CETP effluent containing mainly pharmaceutical compounds: Understanding into effect of parameters and toxicity analysis

Cited by 5 publications

References 36 publications

Treatment of wastewater containing ciprofloxacin using the hybrid treatment approach based on acoustic cavitation

Treatment of wastewater containing ciprofloxacin using the hybrid treatment approach based on acoustic cavitation

Hydrodynamic Cavitation and Advanced Oxidation for Enhanced Degradation of Persistent Organic Pollutants: A Review

Ultrasound-Assisted Catalytic Ozonation-Based Treatment of Rare-Earth Processing Effluent Containing Ammonium Thiocyanate (NH₄SCN)

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Acoustic cavitation for the process intensification of biological oxidation of CETP effluent containing mainly pharmaceutical compounds: Understanding into effect of parameters and toxicity analysis

Cited by 5 publications

References 36 publications

Treatment of wastewater containing ciprofloxacin using the hybrid treatment approach based on acoustic cavitation

Treatment of wastewater containing ciprofloxacin using the hybrid treatment approach based on acoustic cavitation

Hydrodynamic Cavitation and Advanced Oxidation for Enhanced Degradation of Persistent Organic Pollutants: A Review

Ultrasound-Assisted Catalytic Ozonation-Based Treatment of Rare-Earth Processing Effluent Containing Ammonium Thiocyanate (NH4SCN)

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Product

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Ultrasound-Assisted Catalytic Ozonation-Based Treatment of Rare-Earth Processing Effluent Containing Ammonium Thiocyanate (NH₄SCN)