|
| Effects of fulvic acid on the water infiltration of soil contaminated by polyethylene microplastics |
| Received:May 11, 2023 |
| View Full Text View/Add Comment Download reader |
| KeyWord:fulvic acid;microplastic;polyethylene;soil column;migration |
| Author Name | Affiliation | E-mail | | YANG Mingyao | School of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi 830054, China | | | JI Hengying | School of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi 830054, China
Key Laboratory of Agricultural Environment of Northwest Oasis, Ministry of Agriculture and Rural Affairs, Urumqi 830091, China | jihengying@126.com | | LI Pan | Key Laboratory of Agricultural Environment of Northwest Oasis, Ministry of Agriculture and Rural Affairs, Urumqi 830091, China
Institute of Soil Fertilizer and Agricultural Water Saving, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China | |
|
| Hits: 1279 |
| Download times: 1736 |
| Abstract: |
| To study the effect of fulvic acid on the water infiltration of polyethylene-contaminated soil, 0.3% fulvic acid was added to contaminated soil containing 0.1%, 1%, and 3% fluorescent-stained polyethylene and analyzed by one-dimensional vertical infiltration test of the soil column . The key results of the study were listed below： compared with the blank soil, 0.1% and 1% polyethylene reduced the pore structure and roughness of the soil surface（inhibiting soil water infiltration and reducing the soil saturated water conductivity）, whereas 3% polyethylene increased the soil surface pore structure and roughness（reducing the infiltration rate and saturated water conductivity）; after the application of 0.3% fulvic acid of on the soil surface of 0.1%, 1%, and 3% polyethylene pollution, the pore structure increased, the roughness increased, the water infiltration rate decreased, and the saturated water conductivity increased with the increase of polyethylene content; however, the saturated water conductivity decreased by 48.75%, 32.01%, and 3.64%, respectively; and the addition of 0.3% fulvic acid increased the vertical downward migration rate of polyethylene microplastics in the soil by 33.33%, 37.50%, and 38.33%, in the 0.1%, 1%, and 3% polyethylene samples, respectively. Thus, fulvic acid increases the pore structure and roughness of polyethylene-contaminated soil, which can reduce the water infiltration rate and saturated water conductivity and improve the vertical downward migration rate of polyethylene in the soil. |
|
|
|
