负载铁元素的溶解性黑碳光催化降解双酚A研究
Journal: Ecological Environment and Protection DOI: 10.12238/eep.v8i1.2449
Abstract
由于森林火灾、农业废弃物燃烧和大规模生物炭应用,生物炭衍生的溶解性黑碳(Dissolved Black Carbon,DBC)大量释放到地表水中。DBC在光照条件下产生活性物质(RS)在有机污染物降解中起着重要作用,这些RS与污染物之间相互作用基本明确,但对于生物炭中可能存在的金属元素对于这些过程的影响还相对较少。本文研究了不同温度下落叶生物炭以及对其负载不同含量铁元素后衍生出的DBC在给予模拟日光照射下活性氧(Reactive Oxygen Species,ROS)等的形成情况,以及对有机污染物双酚A的光降解过程。结果表明,铁元素的存在能够显著改变DBC的化学结构和光照后生成ROS情况,在水生环境中能够诱导BPA在阳光下的光降解。
Keywords
溶解性黑炭；光催化；持久性自由基；活性氧
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