Synergistic degradation of chloramphenicol by ultrasound-enhanced nanoscale zero-valent iron/persulfate treatment

Zhang, Tingting; Yang, Yanling; Gao, Jingfeng; Li, Xing; Yu, Haikuan; Wang, Nan; Du, Peng; Yu, Rui; Li, Hang; Zhou, Zhiwei

doi:10.1016/j.seppur.2020.116575

Cited by 85 publications

(23 citation statements)

References 61 publications

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“…As similar decrease in degradation efficiency with increasing pH (3–11) has been reported by Zhang et al [ 73 ] who used ultrasound-nZVI/PS to degrade chloramphenicol (CAP). The effect of pH was attributed to several factors, including (i) precipitation of Fe at alkaline pH and passivation of the ZVI surface, which gets covered by a layer of Fe (hydr)oxides that hinder CAP decomposition; (ii) lower dissolution of ZVI at higher pH, which reduces the availability of Fe 2+ that is required to activate PS; and (iii) scavenging of SO 4 •− by H 2 O and hydroxyl ions at basic pH.…”

Section: Degradation Of Pollutants By Zvi-fenton/persulfatesupporting

confidence: 80%

“…•− was shown to play a more important role than • OH in the degradation of CAP in the studied system [73]. The elevated performance of ZVI/PS at acidic pH explains why Diao et al used this technique for the treatment of acid mine drainage water, to achieve the removal of atrazine (ATZ) [30].…”

Section: Effect Of Phmentioning

confidence: 93%

“…However, the replacement of SO 4 •− by • OH as reactive species is not always detrimental to degradation: the effect depends on substrate, operational conditions, and the possible occurrence of interfering agents, thus it cannot be generalized to all circumstances. Overall, SO 4 •− was shown to play a more important role than • OH in the degradation of CAP in the studied system [ 73 ]. The elevated performance of ZVI/PS at acidic pH explains why Diao et al used this technique for the treatment of acid mine drainage water, to achieve the removal of atrazine (ATZ) [ 30 ].…”

Section: Degradation Of Pollutants By Zvi-fenton/persulfatementioning

confidence: 99%

See 2 more Smart Citations

A Review on the Degradation of Pollutants by Fenton-Like Systems Based on Zero-Valent Iron and Persulfate: Effects of Reduction Potentials, pH, and Anions Occurring in Waste Waters

et al. 2021

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Among the advanced oxidation processes (AOPs), the Fenton reaction has attracted much attention in recent years for the treatment of water and wastewater. This review provides insight into a particular variant of the process, where soluble Fe(II) salts are replaced by zero-valent iron (ZVI), and hydrogen peroxide (H2O2) is replaced by persulfate (S2O82−). Heterogeneous Fenton with ZVI has the advantage of minimizing a major problem found with homogeneous Fenton. Indeed, the precipitation of Fe(III) at pH > 4 interferes with the recycling of Fe species and inhibits oxidation in homogeneous Fenton; in contrast, suspended ZVI as iron source is less sensitive to the increase of pH. Moreover, persulfate favors the production of sulfate radicals (SO4•−) that are more selective towards pollutant degradation, compared to the hydroxyl radicals (•OH) produced in classic, H2O2-based Fenton. Higher selectivity means that degradation of SO4•−-reactive contaminants is less affected by interfering agents typically found in wastewater; however, the ability of SO4•− to oxidize H2O/OH− to •OH makes it difficult to obtain conditions where SO4•− is the only reactive species. Research results have shown that ZVI-Fenton with persulfate works best at acidic pH, but it is often possible to get reasonable degradation at pH values that are not too far from neutrality. Moreover, inorganic ions that are very common in water and wastewater (Cl−, HCO3−, CO32−, NO3−, NO2−) can sometimes inhibit degradation by scavenging SO4•− and/or •OH, but in other cases they even enhance the process. Therefore, ZVI-Fenton with persulfate might perform unexpectedly well in some saline waters, although the possible formation of harmful by-products upon oxidation of the anions cannot be ruled out.

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Section: Degradation Of Pollutants By Zvi-fenton/persulfatesupporting

confidence: 80%

Section: Effect Of Phmentioning

confidence: 93%

Section: Degradation Of Pollutants By Zvi-fenton/persulfatementioning

confidence: 99%

See 1 more Smart Citation

A Review on the Degradation of Pollutants by Fenton-Like Systems Based on Zero-Valent Iron and Persulfate: Effects of Reduction Potentials, pH, and Anions Occurring in Waste Waters

et al. 2021

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“…However, these materials suffered from some insufficiencies: (1) LDHs and clays exhibit slow sorption kinetics and limited selectivity; (2) ACs and carbonaceous materials possess disadvantages of small pore volumes or pore sizes; (3) GO and CNTs are complicated to synthesize and produce; (4) the poor regeneration and reusability of organic resins; and (5) relatively low chemical and thermal stability of LMS. 147 Novel nanomaterials, such as polymer adsorbents, 148 2D MXenes, 149 , 150 , 151 , 152 , 153 nanoscale zero-valent iron (NZVI), 154 , 155 , 156 , 157 , 158 , 159 g-C 3 N 4 , 120 , 160 , 161 , 162 , 163 , 164 MOFs, 165 , 166 , 167 , 168 and COFs, 169 , 170 , 171 are constantly applied to improve their applications in environmental pollution cleanup owing to their superior performance. MOFs and COFs represent porous crystalline materials for network topology.…”

Section: Introductionmentioning

confidence: 99%

Orderly Porous Covalent Organic Frameworks-based Materials: Superior Adsorbents for Pollutants Removal from Aqueous Solutions

et al. 2021

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Summary Covalent organic frameworks (COFs) are a new type of crystalline porous polymers known for chemical stability, excellent structural regularity, robust framework, and inherent porosity, making them promising materials for capturing various types of pollutants from aqueous solutions. This review thoroughly presents the recent progress and advances of COFs and COF-based materials as superior adsorbents for the efficient removal of toxic heavy metal ions, radionuclides, and organic pollutants. Information about the interaction mechanisms between various pollutants and COF-based materials are summarized from the macroscopic and microscopic standpoints, including batch experiments, theoretical calculations, and advanced spectroscopy analysis. The adsorption properties of various COF-based materials are assessed and compared with other widely used adsorbents. Several commonly used strategies to enhance COF-based materials’ adsorption performance and the relationship between structural property and sorption ability are also discussed. Finally, a summary and perspective on the opportunities and challenges of COFs and COF-based materials are proposed to provide some inspiring information on designing and fabricating COFs and COF-based materials for environmental pollution management.

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“…Degradation effect of different kinds of wastewater based on PS/PMS activated by different kinds of iron[85][86][87][88][89][90][91][92].…”

mentioning

confidence: 99%

A Review of Activation Persulfate by Iron-Based Catalysts for Degrading Wastewater

Zhi

et al. 2021

Applied Sciences

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Advanced oxidation technology of persulfate is a new method to degrade wastewater. As the economy progresses and technology develops, increasingly more pollutants produced by the paper industry, printing and dyeing, and the chemical industry are discharged into water, causing irreversible damage to water. Methods and research directions of activation persulfate for wastewater degradation by a variety of iron-based catalysts are reviewed. This review describes the merits and demerits of advanced oxidation techniques for activated persulfate by iron-based catalysts. In order to promote the development of related research work, the problems existing in the current application are analyzed.

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Synergistic degradation of chloramphenicol by ultrasound-enhanced nanoscale zero-valent iron/persulfate treatment

Cited by 85 publications

References 61 publications

A Review on the Degradation of Pollutants by Fenton-Like Systems Based on Zero-Valent Iron and Persulfate: Effects of Reduction Potentials, pH, and Anions Occurring in Waste Waters

A Review on the Degradation of Pollutants by Fenton-Like Systems Based on Zero-Valent Iron and Persulfate: Effects of Reduction Potentials, pH, and Anions Occurring in Waste Waters

Orderly Porous Covalent Organic Frameworks-based Materials: Superior Adsorbents for Pollutants Removal from Aqueous Solutions

A Review of Activation Persulfate by Iron-Based Catalysts for Degrading Wastewater

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