Catalytic non-thermal plasma reactor for mineralization of endosulfan in aqueous medium: A green approach for the treatment of pesticide contaminated water

Reddy, P. Manoj Kumar; Mahammadunnisa, Sk.; Subrahmanyam, Ch.

doi:10.1016/j.cej.2013.08.087

Cited by 78 publications

(12 citation statements)

References 43 publications

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“…The concentrations of H 2 O 2 ranged from 0.174 to 2.7 mM for antibiotics solutions in water with slightly higher values (0.21 to 3.6 mM) observed for antibiotics in the meat effluent. Similar results have been reported by previous authors 49,50 . Focusing on the degradation of antibiotics by DBD plasma, Hama Aziz et al .…”

Section: Resultssupporting

confidence: 93%

Degradation kinetics of cold plasma-treated antibiotics and their antimicrobial activity

Sarangapani

Ziuzina

Behan

et al. 2019

Sci Rep

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Antibiotics, such as ofloxacin (OFX) and ciprofloxacin (CFX), are often detected in considerable concentrations in both wastewater effluents and surface water. This poses a risk to non-target organisms and to human health. The aim of this work was to study atmospheric cold plasma (ACP) degradation of antibiotics in water and meat effluent and to explore any residual antimicrobial activity of samples submitted to the plasma process. The results revealed that ACP successfully degraded the studied antibiotics and that the reaction mechanism is principally related to attack by hydroxyl radicals and ozone. According to the disk diffusion assay, the activity of both antibiotics was considerably reduced by the plasma treatment. However, a microdilution method demonstrated that CFX exhibited higher antimicrobial activity after ACP treatment than the corresponding control revealing a potentially new platform for future research to improve the efficiency of conventional antibiotic treatments. Importantly, short-term exposures to sub-lethal concentrations of the antibiotic equally reduced bacterial susceptibility to both ACP treated and untreated CFX. As a remediation process, ACP removal of antibiotics in complex wastewater effluents is possible. However, it is recommended that plasma encompass degradant structure activity relationships to ensure that biological activity is eliminated against non-target organisms and that life cycle safety of antibiotic compounds is achieved.

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Section: Resultssupporting

confidence: 93%

Degradation kinetics of cold plasma-treated antibiotics and their antimicrobial activity

Sarangapani

Ziuzina

Behan

et al. 2019

Sci Rep

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“…The highly reactive species of plasma interact with the pesticide compounds resulting in their degradation. The existing studies on pesticide degradation in water and soil surfaces using nonthermal plasma exhibits the potentiality of the technique (Kim, Kim, & Kang, 2007) (Bai, Chen, Yang, Guo, & Zhang, 2010) (Reddy, Mahammadunnisa, & Subrahmanyam, 2014) (Sarangapani et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Influence of low‐pressure nonthermal dielectric barrier discharge plasma on chlorpyrifos reduction in tomatoes

Gracy

Gupta

Radhakrishnan

2019

J Food Process Engineering

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This study aimed to investigate the influence of nonthermal dielectric barrier discharge (DBD) plasma on chlorpyrifos reduction in tomatoes. As plasma contains highly reactive species and free radicals, it is expected to cause oxidative degradation of the target pesticide chlorpyrifos into its metabolites, thereby reducing the pesticide concentration. Tomatoes applied with three initial pesticide concentrations ranging from 0.6 to 0.8 ppm were subjected to DBD plasma of 2–5 W for the exposure of 4–6 min. The plasma‐treated and control samples were examined for the concentration of pesticide and the physicochemical attributes. The maximum reduction of 89.18% in the pesticide concentration was observed with 5 W at 6 min, which might be due to the intensified reactions of oxidative plasma species. This was further confirmed by GC–MS analysis, and the predominant metabolite of chlorpyrifos degradation, 3,5,6‐trichloro pyridinol (TCP) was identified in the treated sample. The physicochemical attributes except TSS and pH were also significantly (p < .05) influenced by the plasma treatments. Tomato color index (TI) was enhanced while firmness, bio yield point, carotenoids, and total phenolic contents were decreased considerably after plasma treatment. Thus, the cold plasma would be a promising nonthermal technique to degrade and reduce the organophosphate pesticide chlorpyrifos in tomatoes. Practical applications The present study investigates the potential of cold plasma technique to reduce the pesticide contaminant in the perishable commodity, which would result in a safer as well as intact freshness product. The discovered process conditions, that is, the plasma power of 5 W and the treatment time of 6 min giving maximum pesticide reduction would be efficient as well as economical to consider this method of decontamination as a feasible pretreatment. This would further facilitate its application in processing and distribution lines even on a large scale level to promise the consumers a benign product.

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“…For Evolich model, q t versus ln t was plotted in accordance with the linear form of the Eq. (8) as mentioned: q t = α + β lnt (8) where q t is the sorption capacity at time t, β and α are the Evolich constant determined from slope and intercept of the plot respectively. The parameters of Evolich model were calculated as shown in Table 8.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

“…Hence, it is prerequisite to remove methylene blue from waste water. The various methods available for the treatment of dye contaminated water are chemical precipitation, membrane filtration, ion exchange, membrane bioreactor, carbon adsorption and coprecipitation/adsorption [6,[8][9][10][11][12][13]. However, chemical and biological methods cannot be used because of the non biodegradable nature of most of the dyes [14].…”

Section: Introductionmentioning

confidence: 99%

Bio-waste derived adsorbent material for methylene blue adsorption

Reddy

Verma

Subrahmanyam

2016

Journal of the Taiwan Institute of Chemical Engineers

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Catalytic non-thermal plasma reactor for mineralization of endosulfan in aqueous medium: A green approach for the treatment of pesticide contaminated water

Cited by 78 publications

References 43 publications

Degradation kinetics of cold plasma-treated antibiotics and their antimicrobial activity

Degradation kinetics of cold plasma-treated antibiotics and their antimicrobial activity

Influence of low‐pressure nonthermal dielectric barrier discharge plasma on chlorpyrifos reduction in tomatoes

Bio-waste derived adsorbent material for methylene blue adsorption

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