Schmidtke T, White D, Woolard C
AEROMIX Systems, Minneapolis, MN 55411, USA.
J Hazard Mater. 1999 Jan 29;64(2):157-65. doi: 10.1016/s0304-3894(98)00243-x.
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 MgO2 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 7 degrees C than 21 degrees C by more than two times. The ORC recovered from Child's Pad after less than 1 year retained nearly all of the original available oxygen, although physical bridging was evident.
儿童垫是阿拉斯加死马镇油田服务作业期间被石油污染的砾石建筑表面。作为补救行动计划的一部分，在垫区边界部分设置了一条未受污染的砂质砾石缓冲带。一种由再生公司生产、名为氧气释放化合物（ORC）的过氧化镁制剂被放置在缓冲带中。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MgO2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氧气释放的影响以及现场暴露对ORC活力的影响。屏障土壤表现出足够的催化活性，能比预期的生物需求更快地将过氧化氢转化为氧气。ORC在7摄氏度时的析氧速率（OER）比21摄氏度时低两倍多。在不到1年后从儿童垫回收的ORC几乎保留了所有原始可用氧气，尽管物理桥接很明显。
