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Selective Removal of Penicillin Antibiotics in Wastewater by Rapid Hydrolysis in Goethite-Zn(II) System
https://orcid.org/0000-0001-7538-5345
The high concentration of penicillin antibiotics in wastewater inhibits the function of biological treatment systems. In this study, we optimized the goethite (FeOOH)–Zn(II) system and used the hydrolysis pretreatment process for the selective removal of penicillin antibiotics from pharmaceutical wastewater. The results showed that penicillin antibiotics could be rapidly and completely hydrolyzed in 20 min with an FeOOH concentration of 500 mg/L and a zinc ions concentration of 30 μM, with a premixing time of 2 h at pH 8.2 and room temperature. The influence of cations on the system was found to be negligible, while phosphate and natural organic matter (NOM) had significant impacts on penicillin degradation, followed by that of bicarbonate. A mechanistic study suggested that these anions reduced the active sites of FeOOH–Zn(OH)2 and affected the interaction between FeOOH and penicillin. Additionally, steric hindrance and hydrogen bond competition effects cannot be ignored. Furthermore, we proposed applying ferric chloride, which effectively pretreated the aforementioned interfering substances. Eventually, penicillin antibiotics were rapidly hydrolyzed in wastewater by the FeOOH–Zn(II) system effectively in 40 min. The findings in this study demonstrate that the proposed approach enhances the hydrolysis of penicillin antibiotics and may serve as a viable pretreatment technology for antibiotic wastewater.
The optimized goethite–Zn(II) system achieved selective and effective penicillin hydrolysis in wastewater matrix with FeCl3 to remove interfering substance.
Selective Removal of Penicillin Antibiotics in Wastewater by Rapid Hydrolysis in Goethite-Zn(II) System
https://orcid.org/0000-0001-7538-5345
The high concentration of penicillin antibiotics in wastewater inhibits the function of biological treatment systems. In this study, we optimized the goethite (FeOOH)–Zn(II) system and used the hydrolysis pretreatment process for the selective removal of penicillin antibiotics from pharmaceutical wastewater. The results showed that penicillin antibiotics could be rapidly and completely hydrolyzed in 20 min with an FeOOH concentration of 500 mg/L and a zinc ions concentration of 30 μM, with a premixing time of 2 h at pH 8.2 and room temperature. The influence of cations on the system was found to be negligible, while phosphate and natural organic matter (NOM) had significant impacts on penicillin degradation, followed by that of bicarbonate. A mechanistic study suggested that these anions reduced the active sites of FeOOH–Zn(OH)2 and affected the interaction between FeOOH and penicillin. Additionally, steric hindrance and hydrogen bond competition effects cannot be ignored. Furthermore, we proposed applying ferric chloride, which effectively pretreated the aforementioned interfering substances. Eventually, penicillin antibiotics were rapidly hydrolyzed in wastewater by the FeOOH–Zn(II) system effectively in 40 min. The findings in this study demonstrate that the proposed approach enhances the hydrolysis of penicillin antibiotics and may serve as a viable pretreatment technology for antibiotic wastewater.
The optimized goethite–Zn(II) system achieved selective and effective penicillin hydrolysis in wastewater matrix with FeCl3 to remove interfering substance.
Selective Removal of Penicillin Antibiotics in Wastewater by Rapid Hydrolysis in Goethite-Zn(II) System
https://orcid.org/0000-0001-7538-5345
The high concentration of penicillin antibiotics in wastewater inhibits the function of biological treatment systems. In this study, we optimized the goethite (FeOOH)–Zn(II) system and used the hydrolysis pretreatment process for the selective removal of penicillin antibiotics from pharmaceutical wastewater. The results showed that penicillin antibiotics could be rapidly and completely hydrolyzed in 20 min with an FeOOH concentration of 500 mg/L and a zinc ions concentration of 30 μM, with a premixing time of 2 h at pH 8.2 and room temperature. The influence of cations on the system was found to be negligible, while phosphate and natural organic matter (NOM) had significant impacts on penicillin degradation, followed by that of bicarbonate. A mechanistic study suggested that these anions reduced the active sites of FeOOH–Zn(OH)2 and affected the interaction between FeOOH and penicillin. Additionally, steric hindrance and hydrogen bond competition effects cannot be ignored. Furthermore, we proposed applying ferric chloride, which effectively pretreated the aforementioned interfering substances. Eventually, penicillin antibiotics were rapidly hydrolyzed in wastewater by the FeOOH–Zn(II) system effectively in 40 min. The findings in this study demonstrate that the proposed approach enhances the hydrolysis of penicillin antibiotics and may serve as a viable pretreatment technology for antibiotic wastewater.
The optimized goethite–Zn(II) system achieved selective and effective penicillin hydrolysis in wastewater matrix with FeCl3 to remove interfering substance.
Selective Removal of Penicillin Antibiotics in Wastewater by Rapid Hydrolysis in Goethite-Zn(II) System
Liu, Yingying (Autor:in) / Meng, Tan (Autor:in) / Fu, Xiaoli (Autor:in) / Zhang, Ruochun (Autor:in) / Sun, Peizhe (Autor:in)
ACS ES&T Water ; 4 ; 1601-1609
12.04.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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