Activation of persulfate and removal of ethyl-parathion from soil: Effect of microwave irradiation

Miao, Duo; Zhao, Song; Zhu, Kaigui; Zhang, Peng; Wang, Tiecheng; Jia, Hanzhong

doi:10.1016/j.chemosphere.2020.126679

Cited by 57 publications

(11 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Relevant results ,,,, showed that compared with ultrasonic, photochemical and electrochemical activation, microwave activation had longer radiation distance because it can even penetrate solids, possessing a good prospect of application. In the field of water treatment, some researchers employed microwave to activate peroxides (i.e., H 2 O 2 , PS, and PMS) to generate free radicals to degrade organic contaminants from wastewater. ,,,,,,,, However, microwave-activated SO 4 • – -based AOTs are not suitable for wastewater treatment because most of the microwave radiation energy will be consumed in heating and evaporation of water, instead of activating oxidants. In the field of gaseous pollutants removal, several researchers ,, used catalysts under microwave activation to remove gaseous pollutants.…”

Section: Progress In So4•–-based Aots For Gaseous Pollutant Removalmentioning

confidence: 99%

“…In the field of water treatment, some researchers employed microwave to activate peroxides (i.e., H 2 O 2 , PS, and PMS) to generate free radicals to degrade organic contaminants from wastewater. 159,160,161,162,163,164,165,166,167 However, microwaveactivated SO 4 • − -based AOTs are not suitable for wastewater treatment because most of the microwave radiation energy will be consumed in heating and evaporation of water, instead of activating oxidants. In the field of gaseous pollutants removal, several researchers 168,169,170 used catalysts under microwave activation to remove gaseous pollutants.…”

Section: Electrochemical Somentioning

confidence: 99%

See 1 more Smart Citation

A Critical Review on Removal of Gaseous Pollutants Using Sulfate Radical-based Advanced Oxidation Technologies

Liu

Wang

2021

Environ. Sci. Technol.

114

View full text Add to dashboard Cite

Excessive emissions of gaseous pollutants such as SO2, NO x , heavy metals (Hg, As, etc.), H2S, VOCs, etc. have triggered a series of environmental pollution incidents. Sulfate radical (SO4•–)-based advanced oxidation technologies (AOTs) are one of the most promising gaseous pollutants removal technologies because they can not only produce active free radicals with strong oxidation ability to simultaneously degrade most of gaseous pollutants, but also their reaction processes are environmentally friendly. However, so far, the special review focusing on gaseous pollutants removal using SO4•–-based AOTs is not reported. This review reports the latest advances in removal of gaseous pollutants (e.g., SO2, NO x , Hg, As, H2S, and VOCs) using SO4•–-based AOTs. The performance, mechanism, active species identification and advantages/disadvantages of these removal technologies using SO4•–-based AOTs are reviewed. The existing challenges and further research suggestions are also commented. Results show that SO4•–-based AOTs possess good development potential in gaseous pollutant control field due to simple reagent transportation and storage, low product post-treatment requirements and strong degradation ability of refractory pollutants. Each SO4•–-based AOT possesses its own advantages and disadvantages in terms of removal performance, cost, reliability, and product post-treatment. Low free radical yield, poor removal capacity, unclear removal mechanism/contribution of active species, unreliable technology and high cost are still the main problems in this field. The combined use of multiactivation technologies is one of the promising strategies to overcome these defects since it may make up for the shortcomings of independent technology. In order to improve free radical yield and pollutant removal capacity, enhancement of mass transfer and optimization design of reactor are critical issues. Comprehensive consideration of catalytic materials, removal chemistry, mass transfer and reactor is the promising route to solve these problems. In order to clarify removal mechanism, it is essential to select suitable free radical sacrificial agents, probes and spin trapping agents, which possess high selectivity for target specie, high solubility in water, and little effect on activity of catalyst itself and mass transfer/diffusion parameters. In order to further reduce investment and operating costs, it is necessary to carry out the related studies on simultaneous removal of more gaseous pollutants.

show abstract

Section: Progress In So4•–-based Aots For Gaseous Pollutant Removalmentioning

confidence: 99%

Section: Electrochemical Somentioning

confidence: 99%

A Critical Review on Removal of Gaseous Pollutants Using Sulfate Radical-based Advanced Oxidation Technologies

Liu

Wang

2021

Environ. Sci. Technol.

114

View full text Add to dashboard Cite

show abstract

“…Advanced oxidation processes (AOPs) have been proposed as environment-friendly approaches to effectively and non-selectively eliminate a wide range of organic contaminants. − AOPs have been used to treat aqueous solutions, polluted gases, and contaminated solid matrices . AOPs rapidly generate active free radicals, including sulfate radicals (SO 4 •– ), , ( • OH), , and (O 2 •– ), , which can degrade many organic substances.…”

Section: Introductionmentioning

confidence: 99%

“…10−12 AOPs have been used to treat aqueous solutions, 13 polluted gases, 14 and contaminated solid matrices. 15 AOPs rapidly generate active free radicals, including sulfate radicals (SO 4…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Removal of VOCs and Odors from Wood by Microwave-Activated Persulfate

Shen

Zhang

et al. 2021

ACS Omega

View full text Add to dashboard Cite

Since traditional methods for removing volatile organic compounds (VOCs) from wood consume large amounts of energy and generate environmental pollution, it is desired to develop a convenient and green treatment method. Oxidation by microwave-activated persulfate (MW-PS) is a promising alternative method that has been used to eliminate VOCs from wood. The penetration of microwave energy can destroy the wood pit membranes and increase VOC emissions. The VOCs are further degraded by •OH and SO 4•− , which are generated via the activation of microwaves. This phenomenon can be detected by the electron paramagnetic resonance spectrometry. The 35 types of main VOCs of natural wood were determined, including alkanes/ terpenes, alcohols/ethers, esters, aldehydes/ketones, and others. In the MW-PS system, 23 compounds were removed with an efficiency of 100%. Specifically, as one of the major compounds, the content of alkanes/terpenes was sharply decreased, and no alcohols/ethers and esters were detected. It was found that the optimal conditions of the MW-PS system for the minimum release of VOCs from wood were the microwave power of 462 W, irradiation time of 30 min, and PS dosage of 0.5 mmol/L.

show abstract

“…So, it is necessary to activate the persulfate to produce free radicals. Persulfate can be activated to generate a sulfate radical (SO 4 ˙ − ) by thermal, 14 ultraviolet, 15 transition metal ions, 16–19 ultrasound, 20 electrical, 21 microwave, 22 carbon, 23 etc. Electrically-activated persulfate technology can effectively activate persulfate to mineralize organic pollutants in wastewater and introduce no metal ions throughout the whole process, reducing the risk of secondary contamination.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the activation of persulfate using nitrogen-doped carbon materials in the electric field for the effective removal of p-nitrophenol

Tang

Zhang

2021

RSC Adv.

View full text Add to dashboard Cite

show abstract

Activation of persulfate and removal of ethyl-parathion from soil: Effect of microwave irradiation

Cited by 57 publications

References 47 publications

A Critical Review on Removal of Gaseous Pollutants Using Sulfate Radical-based Advanced Oxidation Technologies

A Critical Review on Removal of Gaseous Pollutants Using Sulfate Radical-based Advanced Oxidation Technologies

Enhancement of Removal of VOCs and Odors from Wood by Microwave-Activated Persulfate

Enhancing the activation of persulfate using nitrogen-doped carbon materials in the electric field for the effective removal of p-nitrophenol

Contact Info

Product

Resources

About