Persulfate activated by non-thermal plasma for organic pollutants degradation: A review

Guo, He; Pan, Shijia; Hu, Zheng; Wang, Yawen; Jiang, Wenxuan; Yang, Yanting; Wang, Yongchun; Han, Jun; Wu, Yue; Wang, Tiecheng

doi:10.1016/j.cej.2023.144094

Cited by 36 publications

(8 citation statements)

References 176 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…•− ) could be effectively generated via activating PS, including peroxymonosulfate (PMS, HSO 5 − ) and peroxydisulfate (PDS, S 2 O 8 2− ), with the assistance of external energies (e.g., heat, 15−17 plasma, 18 light, 19−23 electricity, 24,25 microwave, 26,27 and ultrasound 28,29 ) and/or homogeneous 30 /heterogeneous 4,31 catalysts (e.g., metal 32,33 (such as Fe, 34−40 Co, 3,41,42 Cu, 43 Mn, 44 and Mo 45 )-based, carbon 46−51 (such as graphene, 52 carbon nanotube, 52,53 and char 54,55 )-based, and metal−carbon hybrid 56 -based). Lin et al 57 indicated that SO 4…”

Section: Somentioning

confidence: 99%

Were Persulfate-Based Advanced Oxidation Processes Really Understood? Basic Concepts, Cognitive Biases, and Experimental Details

Hu,

Zhu

2024

Environ. Sci. Technol.

View full text Add to dashboard Cite

Persulfate (PS)-based advanced oxidation processes (AOPs) for pollutant removal have attracted extensive interest, but some controversies about the identification of reactive species were usually observed. This critical review aims to comprehensively introduce basic concepts and rectify cognitive biases and appeals to pay more attention to experimental details in PS-AOPs, so as to accurately explore reaction mechanisms. The review scientifically summarizes the character, generation, and identification of different reactive species. It then highlights the complexities about the analysis of electron paramagnetic resonance, the uncertainties about the use of probes and scavengers, and the necessities about the determination of scavenger concentration. The importance of the choice of buffer solution, operating mode, terminator, and filter membrane is also emphasized. Finally, we discuss current challenges and future perspectives to alleviate the misinterpretations toward reactive species and reaction mechanisms in PS-AOPs.

show abstract

Section: Somentioning

confidence: 99%

Were Persulfate-Based Advanced Oxidation Processes Really Understood? Basic Concepts, Cognitive Biases, and Experimental Details

Hu,

Zhu

2024

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Various treatment methods have been developed and used to remove organic pollutants from aqueous solutions, including physical, chemical, biological and hybrid approaches. Several review articles have discussed the removal of synthetic organic dyes from wastewater using physical adsorption [17][18][19][20], biological degradation [10,21] and advanced chemical oxidation processes [22,23], such as photocatalysis [24,25], ozonation [26], sulfate-radical [27,28] and Fenton and Fenton-like oxidation [29,30]. Table 1 summarizes the advantages and limitations of various treatment methods for organic dye wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Advancements in application of modified biochar as a green and low-cost adsorbent for wastewater remediation from organic dyes

Hama Aziz,

Fatah,

Muhammad

2024

R. Soc. Open Sci.

View full text Add to dashboard Cite

Synthetic organic dyes, which are resistant to biodegradation, pose a notable health risk, potentially leading to cancer and respiratory infections. Researchers have addressed this concern by exploring physicochemical methods to remove organic dyes from wastewater. A particularly promising solution involves modified biochar adsorbents, which demonstrate high efficiency in organic dye removal. Biochar, a charcoal-like material derived from biomass pyrolysis, offers advantages such as low cost, eco-friendliness, high efficiency and reusability. Beyond its role in sustainable soil remediation, biochar proves effective in removing organic dyes from wastewater after undergoing physical or chemical modification. Acid–base activation or metal–heteroatom impregnation enhances biochar's adsorption capacity. This comprehensive review examines the attributes of biochar, common methods for production and modification, and the impacts of raw materials, pyrolysis temperature, heating rate and residence time. It further elucidates the biochar adsorption mechanism in the removal of organic dyes, assessing factors influencing efficiency, including biochar feedstock, solution pH, adsorption temperature, particle size, initial dye concentration, biochar dosage and reaction time. It explores challenges, opportunities, reusability and regeneration methods of biochar in treating organic dye wastewater. It also discusses recent advances in organic dye removal using adsorption-based biochar. The review ultimately advocates for enhancing biochar's adsorption performance through post-modification.

show abstract

“…However, these methods generally have associated problems such as harsh reaction conditions, complex operations, and secondary pollution [ 6 ]. Non-thermal plasma (NTP) is an emerging advanced oxidation technology in recent years [ 7 ]. During the discharge process under applied voltage, it dissociates gas phase molecules and water molecules, producing a large number of active free radicals.…”

Section: Introductionmentioning

confidence: 99%

Safe Disposal of Accident Wastewater in Chemical Industrial Parks Using Non-Thermal Plasma with ZnO-Fe3O4 Composites

Li,

Wang,

Qian

et al. 2024

Toxics

Self Cite

View full text Add to dashboard Cite

Chemical wastewater has a high concentration of toxic and hazardous antibiotic pollutants, which not only devastates the ecological environment and disrupts the ecological balance, but also endangers human health. This research proposed a non-thermal plasma (NTP) combined with a ZnO-Fe3O4 nano-catalyst system to achieve the efficient degradation of ciprofloxacin (CIP) in chemical wastewater. Firstly, ZnO-Fe3O4 composite materials were prepared using hydrothermal method and characterized with scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), etc. With the sole NTP, NTP/ZnO, and NTP/ZnO-Fe3O4 systems, the removal efficiency of CIP can reach 80.1%, 88.2%, and 99.6%, respectively. The optimal doping amount of Fe3O4 is 14%. Secondly, the capture agent experiment verified that ·OH, ·O2−, and 1O2 all have a certain effect on CIP degradation. Then, liquid chromatography–mass spectrometry (LC-MS) was used to detect the intermediate and speculate its degradation pathway, which mainly included hydroxyl addition, hydroxyl substitution, and piperazine ring destruction. After treatment with the NTP/ZnO-Fe3O4 system, the overall toxicity of the product was reduced. Finally, a cyclic experiment was conducted, and it was found that the prepared ZnO-Fe3O4 catalyst has good reusability. The NTP/ZnO-Fe3O4 was also applied in practical pharmaceutical wastewater treatment and has practical applicability.

show abstract

Persulfate activated by non-thermal plasma for organic pollutants degradation: A review

Cited by 36 publications

References 176 publications

Were Persulfate-Based Advanced Oxidation Processes Really Understood? Basic Concepts, Cognitive Biases, and Experimental Details

Were Persulfate-Based Advanced Oxidation Processes Really Understood? Basic Concepts, Cognitive Biases, and Experimental Details

Advancements in application of modified biochar as a green and low-cost adsorbent for wastewater remediation from organic dyes

Safe Disposal of Accident Wastewater in Chemical Industrial Parks Using Non-Thermal Plasma with ZnO-Fe3O4 Composites

Contact Info

Product

Resources

About