通过渗透性路面减少雨水中的轮胎磨损颗粒和轮胎添加剂化学品,Science of the Total Environment

当前位置： X-MOL 学术 › Sci. Total Environ. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

通过渗透性路面减少雨水中的轮胎磨损颗粒和轮胎添加剂化学品
Science of the Total Environment ( IF 8.2 ) Pub Date : 2023-11-07 , DOI: 10.1016/j.scitotenv.2023.168236
Chelsea J Mitchell ₁ , Anand D Jayakaran ₂

Affiliation

6PPD-醌 (6PPDQ) 是最近发现的一种化学物质，对银鲑鱼具有剧毒，并且可以通过 6PPD 的环境暴露而形成，6PPD 是一种广泛存在于轮胎磨损颗粒 (TWP) 中的化合物。沉积在道路上的 TWP 通过雨水输送到水生生态系统，造成微塑料污染和有机污染物负荷。然而，人们对 TWP 及其在这些系统中的可浸出污染物的命运知之甚少。我们在华盛顿州塔科马的一所高中进行了三项实验，以量化渗透性路面 (PP) 配方（一种绿色雨水基础设施 (GSI)）对 TWP 和十种轮胎相关污染物（包括 6PPDQ）的处理性能。聚丙烯由混凝土和沥青组成，有或没有固化碳纤维，以提高聚丙烯的机械性能。人行道经过人工计量，并设有暗渠来收集污水。进行了三个实验来评估 PP 使用冷冻研磨轮胎颗粒 (cTP) 减轻轮胎相关污染的效果。第一个和第三个实验建立了 TWP 和污染物的基线，并评估了污染物持续释放的可能性。在实验 2 中，cTP 被应用于每个路面。我们的结果表明，PP 衰减了超过 96% 的沉积 cTP 质量。据估计，进水和出水采样站之间的 PP 系统去除了 52-100% 的潜在可浸出 6PPDQ。废水中的背景 6PPDQ 浓度范围为 0 至 0.0029 μg/L。在实验 1 或 2 中，流出物 6PPDQ 浓度不能用流出物 TWP 浓度来解释，但在实验 3 中显着相关，这表明在随后的暴风雨期间，从保留在路面中的 TWP 中沥滤出的 6PPDQ 极少。我们的结果表明，PP 可能是减轻轮胎相关雨水污染的 GSI 的有效形式。固化碳纤维改性路面所提供的更高强度，扩大了 PP 在高交通道路上的应用，在这些道路上，轮胎相关污染构成了最大的环境风险。

"点击查看英文标题和摘要"

Mitigating tire wear particles and tire additive chemicals in stormwater with permeable pavements

6PPD-quinone (6PPDQ) is a recently discovered chemical that is acutely toxic to coho salmon () and can form via environmental exposure of 6PPD, a compound found extensively in tire wear particles (TWPs). TWPs deposited on roads are transported to aquatic ecosystems via stormwater, contributing to microplastic pollution and organic contaminant loads. However, little is known about the fate of TWPs and their leachable contaminants in these systems. We conducted three experiments at a high school in Tacoma, Washington, to quantify the treatment performance of permeable pavement (PP) formulations, a type of green stormwater infrastructure (GSI), for TWPs and ten tire-associated contaminants, including 6PPDQ. The PPs comprised concrete and asphalt, with and without cured carbon fibers, to improve the mechanical properties of PPs. Pavements were artificially dosed and had underdrains to capture effluent. Three experiments were conducted to evaluate PP mitigation of tire-associated pollution using cryomilled tire particles (cTPs). The 1st and 3rd experiments established a baseline for TWPs and contaminants and assessed the potential for continued pollutant release. During experiment 2, cTPs were applied to each pavement. Our results showed that the PPs attenuated >96 % of the deposited cTPs mass. An estimated 52–100 % of potentially leachable 6PPDQ was removed by the PP systems between the influent and effluent sampling stations. Background 6PPDQ concentrations in effluents ranged from 0 to 0.0029 μg/L. Effluent 6PPDQ concentrations were not explained by effluent TWP concentrations in experiments 1 or 2 but were significantly correlated in experiment 3, suggesting that leaching of 6PPDQ from TWPs retained in the pavement was minimal during a subsequent storm. Our results suggest that PPs may be an effective form of GSI for mitigating tire-associated stormwater pollution. The improved strength offered by cured carbon fiber-amended pavements extends PP deployment on high-traffic roadways where tire-associated pollution poses the greatest environmental risk.

更新日期：2023-11-07

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南