Sorptive riddance of enrofloxacin from wastewater: linear and non-linear isotherm and kinetics, safe disposal, and cost analysis

Sharma, Debasish Das; Show, Sumona; Samanta, Sucharita; Vanitha, Kondi; Khan, Anoar Ali; Halder, Gopinath

doi:10.1007/s13399-021-02172-8

Cited by 2 publications

(4 citation statements)

References 19 publications

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“…However, increase in ENX concentration further beyond 20 mg/L, showed a drop in percentage removal of ENX. This decline in removal percentage can be ascertained by the occupancy of all active sites available in PAGCSB which are overcrowded by ENX molecules in the vicinity 21 …”

Section: Resultsmentioning

confidence: 99%

“…The adsorption rate began to decline when temperature increased over 30°C. The weak van der Waals forces and hydrogen bonding are involved during sorption method while temperature increases, and it resulted in breaking down of sorptive forces thereby showing reduction of ENX removal at higher temperature 21 …”

Section: Resultsmentioning

confidence: 99%

“…Where k d is the diffusion rate constant in mg/g h 0.5 and c is the intercept of the q t versus t 0.5 plot 21 …”

Section: Methodsmentioning

confidence: 99%

“…Sorbate molecules enter into the active free sites of the surface of the PAGCSB which is a slow process, but the trend climb with rise in contact hours to 16 h. Thereafter the decreased adsorption is observed with further increase in time, as all the free sites are found occupied by all the adsorbate molecules. 21…”

Section: Impact Of Agitation Speedmentioning

confidence: 99%

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Elucidating facile biosorptive eradication of enrofloxacin: Equilibrium, kinetics, reusability, cost estimation, and safe disposal

Sharma

Show

Barman

et al. 2023

Env Prog and Sustain Energy

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In the current investigation, superheated steam activated green coconut shell (Cocos nucifera) biochar (PAGCSB) has been used in sorptive expulsion of the pharmaceutical micro‐pollutant enrofloxacin (ENX) from water. Through a number of progressive studies in batch sorption process, the influence of some crucial parameters are evaluated toward efficacious remediation of ENX laden aqueous media by PAGCSB. The parameters studied are: contact time (5–20 h); mixing intensity (100–190 rpm); pH (1–9); initial ENX concentration (5–35 mg/L); temperature (15–40°C); and biosorbent dosage (2–5 g/L). The maximum ENX removal is 91.92% by using ENX initial concentration 20 mg/L; pH 7; temperature 30°C; biosorbent dose 4 g/L; stirring speed 150 rpm; and contact period 16 h. The repeated usability of spent biochar has been assessed and found to be 69.91% even after the fifth cycle. The pseudo‐second order kinetic model provided the best fit to the kinetic data. The Langmuir model showed the finest suit to the isotherm data. Adsorption capacity of the biosorbent was observed to be 2.32 mg/g. The current study on biosorptive riddance of ENX revealed a good level of randomness in the thermodynamic process which is found to be exothermic in nature. A wide‐scale utilization of the developed biosorbent has been well‐substantiated by the cost estimation. Finally, the safe disposal of spent biosorbent has been studied in accordance with the World Health Organization safety guidelines. Hence, superheated steam activated green coconut shell derived biochar could be a cost‐effective and competent sorbent material for ENX eradication from contaminated water.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…Where k d is the diffusion rate constant in mg/g h 0.5 and c is the intercept of the q t versus t 0.5 plot 21 …”

Section: Methodsmentioning

confidence: 99%

Section: Impact Of Agitation Speedmentioning

confidence: 99%

See 2 more Smart Citations

Elucidating facile biosorptive eradication of enrofloxacin: Equilibrium, kinetics, reusability, cost estimation, and safe disposal

Sharma

Show

Barman

et al. 2023

Env Prog and Sustain Energy

View full text Add to dashboard Cite

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Oxidation towards enrofloxacin degradation over nanoscale zero-valent copper: mechanism and products

Gong

Xie

Liu

et al. 2022

Environ Sci Pollut Res

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Enro oxacin (ENR) is a widely used veterinary uoroquinolone antibiotic and is frequently detected in water environments. The degradation of ENR was examined utilizing molecular oxygen mediation using nanometer zero-valent copper (nZVC) as the catalyst in this work. The dosage of nZVC, initial pH, and reaction temperature were investigated as contributing factors to ENR degradation. The reactive oxygen species (ROS) that participated in the reaction were identi ed, their generation mechanisms were elucidated, and the effects on ENR degradation were assessed. More emphasis was given to exploring ENR degradation and transformation pathways via analyses of HPLC-TOF-MS. Data showed that at 35 ℃, with an initial pH of 3 and exposed to air, an nZVC dose of 0.5 g•L − 1 degraded ENR by 99.51% dramatically. HO • radicals were identi ed as the dominant ROS, and conversions among Cu 0 , Cu + , and Cu 2+ played crucial roles in the generation of ROS. The destruction mechanism of ENR was speculated based on analyses of HPLC-TOF-MS results as the transformation of the piperazine ring into an oxidized state with a -COOH substitution with HO • , which caused ENR to be mineralized and converted into CO 2 , H 2 O, and . This research proposes a capable and practical method for removing ENR from water.

show abstract

Sorptive riddance of enrofloxacin from wastewater: linear and non-linear isotherm and kinetics, safe disposal, and cost analysis

Cited by 2 publications

References 19 publications

Elucidating facile biosorptive eradication of enrofloxacin: Equilibrium, kinetics, reusability, cost estimation, and safe disposal

Elucidating facile biosorptive eradication of enrofloxacin: Equilibrium, kinetics, reusability, cost estimation, and safe disposal

Oxidation towards enrofloxacin degradation over nanoscale zero-valent copper: mechanism and products

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