Exploring the use of graphene-based materials as adsorbent for the removal PFOS and PFOA from contaminated groundwater****

全氟烷基和多氟烷基物质是新兴的地下水污染物，对加拿大的饮用水资源构成广泛的风险。尽管全氟辛烷磺酸（PFOS）和全氟辛酸（PFOA）这两种最常见的全氟辛烷磺酸对人类的影响目前是一个有争议的话题，但它们与各种健康问题有关，如血胆固醇升高、肝损伤、肾癌和睾丸癌以及甲状腺功能障碍。因此，加拿大卫生部建议饮用水的全氟辛烷磺酸筛查值为600纳克/升，全氟辛烷磺酸筛查值为200纳克/升。****本项目将研究使用各种吸附剂材料去除全氟辛烷磺酸和全氟辛烷磺酸，以便开发一种有效的非原位（即泵和处理）地下水处理技术。我们将筛选各种各样的材料，并选择最有效的材料来进一步研究影响PFOS和PFOA在材料上吸附的因素。这项研究将帮助我们的行业合作伙伴InSitu修复服务有限公司（St. George， ON）开发和设计更有效的处理系统，这将降低处理成本，并减少人类和生物对这些潜在有毒污染物的暴露

Per- and polyfluoroalkyl substances (PFAS) are emerging groundwater contaminants which pose widespread risks to drinking water resources in Canada. Although the effects of PFAS on humans are currently a topic of debate, perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA), namely the two most common PFAS, have been linked to various health problems such as increased blood cholesterol, liver damage, kidney and testicular cancer, and thyroid disfunction. Therefore, Health Canada has proposed drinking water screening values of 600 ng/L for PFOS and 200 ng/L for PFOA.****This project will investigate the removal of PFOS and PFOA using various adsorbent materials in order to develop an effective ex situ (i.e., pump and treat) groundwater treatment technology. We will screen a wide variety of materials, and select the most effective ones to further investigate factors affecting the adsorption of PFOS and PFOA onto the materials. The research will help our industry partner, InSitu Remediation Services Ltd. (St. George, ON) develop and design more efficient treatment systems, which will reduce treatment costs as well as exposure by human and biota to these potentially toxic contaminants.**