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Effects of advanced oxidation processes on leachates and properties of microplastics
Journal of Hazardous Materials2021
145 citations
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Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 50
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0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Xiangliang Pan
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Xiangliang Pan
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Yifeng Zeng,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Yifeng Zeng,
Yu Li,
Yaoyao Zhao,
Yahui Xiang,
Yahui Xiang,
Yahui Xiang,
Yahui Xiang,
Yifeng Zeng,
Xiangliang Pan
Xiangliang Pan
Yifeng Zeng,
Xiangliang Pan
Xiangliang Pan
Yaoyao Zhao,
Yaoyao Zhao,
Yaoyao Zhao,
Yu Li,
Xiangliang Pan
Yu Li,
Yu Li,
Xiangliang Pan
Yu Li,
Hongwei Luo,
Yaoyao Zhao,
Xiangliang Pan
Yahui Xiang,
Yu Li,
Yahui Xiang,
Yahui Xiang,
Yahui Xiang,
Yifeng Zeng,
Yifeng Zeng,
Hongwei Luo,
Xiangliang Pan
Yaoyao Zhao,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Yu Li,
Yaoyao Zhao,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Hongwei Luo,
Hongwei Luo,
Xiangliang Pan
Hongwei Luo,
Xiangliang Pan
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Hongwei Luo,
Xiangliang Pan
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Yu Li,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Summary
Ozonation, Fenton, and heat-activated persulfate treatments were applied to microplastics containing pigment red, finding that all three advanced oxidation processes effectively degraded the released pigment and altered nanoscale surface properties of the treated MPs.
Microplastics (MPs) in natural environments undergo various aging processes. So far, little is known about the effects of chemical oxidation on leachates and properties of MPs. Here, we investigated the removal of pigment red from MPs by ozonation, Fenton, and heat-activated persulfate treatments, and further explored the nanoscale surface properties of treated MPs. Experimental results indicated that advanced oxidation processes effectively degraded pigment red released from MPs and the degradation rate was much faster than the leaching rate of pigments. Dominant reactive oxygen radicals in the ozone, Fenton, and heat-activated persulfate systems were identified as O, HO•, and SO, respectively. Height ranges of untreated, ozone-treated, Fenton-treated, and persulfate-treated MPs were 73 nm, 163 nm, 195 nm, and 206 nm, respectively. Oxidation of the -CH and -CH bonds occurred on the surface of treated MPs and the persulfate system achieved more serious oxidation degree than the ozone and Fenton systems. Addition of pigment red to the plastic polymer increased the glass transition temperature of MPs, which then showed a decline after advanced oxidation treatments except Fenton. The surface of persulfate-treated MPs was the stiffest, but the stiffness distribution of the ozone-treated and Fenton-treated MPs was more uneven. These research findings provide promising strategies to accelerate the aging process of MPs and contribute to a better understanding of the effects of aging on the environmental behavior of MPs.