In-silico analysis of atmospheric diffusion, crop planting degrading scheme, and health risk of dioxins from a domestic waste incineration plant. (1st April 2023)

• Record Type: Journal Article
• Authors: Li, Qing; Li, Xixi; Ren, Zhixing; Du, Meijn; Yang, Jiawen; Yang, Luze; He, Wei; Yang, Hao; Zhao, Yuanyuan; Gu, Wenwen; Liu, Wei; Zhao, Wenjin; Li, Yu
• Is Part Of: Waste management. Volume 160(2023)
• Page Start: 59
• Page End: 68
• Publication Date: 2023-04-01
• Subjects: Waste incineration plant -- Level-III fugacity model -- Atmospheric dispersion model system -- Crop planting scheme -- Healthy dietary plan; Hazardous wastes -- Periodicals; Refuse and refuse disposal -- Periodicals; 363.728
• DOI: 10.1016/j.wasman.2023.02.010
• Languages: English
• ISSNs: 0956-053X

Abstract

Highlights: Crop planting scheme was developed to remove the dioxins from the soil. Optimum healthy dietary plan reduced 58.13% dioxins risk to sensitive populations. Fertilizer schemes improved the degradation of dioxin by rhizosphere microorganisms. Dioxins' ground-level concentration (2.283 × 10 −8 –1.362 × 10 − 4 ng TEQ/m 3 ) was estimated. Abstract: Based on a domestic waste incineration power generation project, the dioxin emission from the waste incineration plant (WIP), phytoextraction and microbial degradation of dioxins, and dioxins human health risks reduction were investigated through in-silico methods. Based on the dioxins concentrations in soil (9.97 × 10 −9 –7.00 × 10 −5 ng/g) predicted by atmospheric dispersion model system and the Level-III fugacity model, planting schemes under different wind directions were designed considering the dioxin absorption capacity and the economic benefits for crops (i.e., barley, peanut, pea, maize and wheat). The dioxins in soils can be further degraded by five crops' rhizosphere microorganisms and fertilizers, simulated through molecular dynamic simulations. The enhanced degradation rates of dioxin by rhizosphere microorganisms of five crops reached 15.70 %–28.66 %. Finally, healthy dietary plans were developed to reduce the risk of dioxin exposure to the sensitive populations living around WIP. Results showed that the consumption of maize, fungus, mushroom and bamboo fungus could effectively reduce dioxins toxicity to humans by 58.13 %. The systematic approach developed in this study provided theoretical support for soil remediation and human health risk control of dioxins-contaminated sites.