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首页> 外文期刊>Journal of Hazardous Materials >Oxygen release kinetics from solid phase oxygen in Arctic Alaska
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Oxygen release kinetics from solid phase oxygen in Arctic Alaska

机译：北极阿拉斯加固相氧的氧气释放动力学

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摘要

Child's Pad is a gravel construction surface that was contaminated with petroleum during oil-field service operations in Deadhorse, Alaska. As part of a remedial action plan, a buffer strip of uncontaminated sandy gravel was placed along sections of the pad boundary. A magnesium peroxide formulation manufactured by Regenesis, and sold as Oxygen Release Compound (ORC), was placed in the buffer strips. The ORC was intended to supply oxygen to aerobic microorganisms capable of degrading petroleum. Studies were conducted in the laboratory to determine initial oxygen release kinetics from ORC in contact with barrier soil. Studies quantified the biotic and abiotic catalytic mechanisms for converting hydrogen peroxide (a possible MgO_2 intermediate) and ORC to oxygen and water, the effects of temperature on oxygen release from ORC, and the effect of field exposure on ORC viability. Barrier soil exhibited sufficient catalytic activity to convert hydrogen peroxide to oxygen faster than the expected biological demand. The oxygen evolution rate (OER) from ORC was lower at 7deg.C than 2ldeg.C by more than two times. The ORC recovered from Child's Pad after less than l year retained nearly all of the original available oxygen, although physical bridging was evident.
机译：儿童垫是砾石建筑表面，在阿拉斯加的Deadhorse的油田服务运营期间被石油污染。作为补救措施计划的一部分，将未受污染的砂砾砾石的缓冲带沿垫块边界的各部分放置。将由Regenesis制造并作为氧气释放化合物（ORC）出售的过氧化镁制剂放置在缓冲液条中。 ORC旨在为能够降解石油的好氧微生物提供氧气。在实验室进行了研究，以确定与屏障土壤接触的ORC的初始氧气释放动力学。研究量化了将过氧化氢（一种可能的MgO_2中间体）和ORC转化为氧气和水的生物和非生物催化机制，温度对ORC释放的氧气的影响，以及野外暴露对ORC活力的影响。屏障性土壤表现出足够的催化活性，以将过氧化氢转化为氧气的速度超过了预期的生物需求。在7摄氏度时，ORC的氧气逸出速率（OER）比2摄氏度低两倍以上。不到一年的时间，从儿童垫中回收的ORC几乎保留了所有原始可用氧气，尽管物理桥接很明显。

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