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首页> 美国卫生研究院文献>Nanomaterials >Performance Evaluation of Porous Graphene as Filter Media for the Removal of Pharmaceutical/Emerging Contaminants from Water and Wastewater
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Performance Evaluation of Porous Graphene as Filter Media for the Removal of Pharmaceutical/Emerging Contaminants from Water and Wastewater

机译：多孔石墨烯作为过滤介质的性能评价用于去除水和废水的药物/新兴污染物

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Graphene and its counterparts have been widely used for the removal of contaminants from (waste)water but with limited success for the removal of pharmaceutical contaminants. Driven by this need, this study reports, for the first time, the removal of pharmaceuticals from real contaminated water samples using porous graphene (PG) as a filter-based column. This work systematically evaluates the performance of PG as a filter medium for the removal of widely consumed pharmaceutical/emerging contaminants (ECs) such as atenolol, carbamazepine, ciprofloxacin, diclofenac, gemfibrozil and ibuprofen. Several factors were investigated in these column studies, including different reactive layer configurations, bed packing heights (5–45 mm), filter sizes (inner diameter 18–40 mm), adsorbent dosages (100–500 mg-PG) and water bodies (distilled water, greywater, and actual effluent wastewater). Sustainable synthesis of PG was carried out followed by its use as a filter medium for the removal of pharmaceuticals at high concentrations (10.5 ± 0.5 mg/L) and trace concentrations (1 mg/L). These findings revealed that the double-layered PG-sand column outperformed a PG single-layered configuration for the removal of most of the ECs. The removal efficiency of ECs from their solutions was improved by increasing PG dosages and filter bed height and size. Although the treatment of mixed pharmaceutical solutions from different water bodies was affected by the negative interference caused by competing water compounds, the treatment of ECs-contaminated greywater was not severely affected. Our findings suggest that PG, as a highly efficient filter medium, could be used for the removal of emerging pharmaceutical contaminants from water and wastewater.
机译：石墨烯及其对应物已广泛用于从（废物）水中除去污染物，但成功地取出药物污染物。这项研究报告的是，首次使用多孔石墨烯（PG）作为基于滤光柱的真实污染水样的药物从真实污染的水样中取出药物。这项工作系统地评估PG作为过滤介质的性能，以去除广泛消耗的药物/新兴污染物（ECS），如Atenolol，Carbamazepine，Ciprofloxacin，Diclofenac，Gemfibrozil和布洛芬。在这些柱研究中研究了几个因素，包括不同的反应层构造，床填料高度（5-45mm），过滤尺寸（内径18-40mm），吸附剂剂量（100-500mg-PG）和水体（蒸馏水，灰水和实际流出废水）。进行PG的可持续合成，然后用作过滤介质，用于以高浓度（10.5±0.5mg / L）和痕量浓度（1mg / L）去除药物。这些发现表明，双层PG - 砂柱优于PG单层构造，用于去除大部分EC。通过增加PG剂量和过滤床的高度和尺寸来提高ECS的去除效率。虽然来自不同水体的混合药物溶液的处理受竞争水化合物引起的负干扰的影响，但ECS污染的灰水处理的治疗没有严重影响。我们的研究结果表明，作为高效过滤介质的PG可用于去除来自水和废水的新出现的药物污染物。

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