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首页> 外文期刊>Journal of Solid Waste Technology and Management >COMPOSTING SPENT ORGANIC SORBENTS WITH RESIDUAL HYDROCARBONS AND REUSING THE FINISHED COMPOST AS A SOIL AMENDMENT FOR MARSH GRASS
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COMPOSTING SPENT ORGANIC SORBENTS WITH RESIDUAL HYDROCARBONS AND REUSING THE FINISHED COMPOST AS A SOIL AMENDMENT FOR MARSH GRASS

机译：将残留的有机吸附剂与残留的碳氢化合物混合并重新利用最终的堆肥作为沼泽草的土壤改良剂

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The overall objective of this study was to expose twelve natural sorbent materials to sweet Louisiana crude oil, then to compost the used sorbent materials after removal of part of the sorbed oil, and to apply the composted materials to marsh grass as a soil amendment. CO_2 evolution history was recorded to measure the compostability of the used natural products, which had been treated with supplemental nitrogen sources. Plant growth tests were carried out in greenhouses using marsh grass (Spartina patens) growing in soils that had been enriched with the composted materials. The sorbents varied widely in the amount of sorbed oil they would hold and release after being pressed to 68.9 kPa. The amount of nitrogen in many sorbents yielded a C:N ratio that was larger than 30:1, the value considered optimal for composting, so that nitrogen fertilizers were applied to bring the C:N ratio to 30:1. Biological activity of spent sorbents increases with application of urea formaldehyde, but decreased with application of other nitrogen sources. The volume of spent sorbents reduced up to 73% of initial height after 184 days of pilot-scale composting. The stem growth rates of the marsh grass treated with various amounts of finished corncob and Ksorb~(TM) sorbent composts were not significantly different from that of the control plants for the most of testing period. The plants treated with finished Oil Gator~(TM)compost showed enhanced stem growth rate compared to the control plants at a significance level of 0.05. The finished compost did not exert phytotoxicity toward the marsh grass.
机译：这项研究的总体目标是将十二种天然吸附剂材料暴露于甜的路易斯安那州原油中，然后在去除部分吸附剂油后对用过的吸附剂材料进行堆肥，然后将堆肥材料作为土壤改良剂施用到沼泽草上。记录了CO_2的释放历史，以测量已用补充氮源处理过的天然产物的可堆肥性。植物生长试验是在温室中进行的，其中使用了在堆肥丰富的土壤中生长的沼泽草（Spartina patens）。吸附剂在被压至68.9 kPa后将保留并释放的吸附油的数量差异很大。许多吸附剂中的氮含量产生的C：N比大于30：1，这被认为是堆肥的最佳值，因此使用了氮肥，使C：N比达到30：1。废吸附剂的生物活性随尿素甲醛的施用而增加，但随其他氮源的施用而降低。经过184天的中试规模堆肥后，用过的吸附剂的体积最多减少了初始高度的73％。在大多数测试期间，用各种量的成品玉米芯和Ksorb〜TM吸附剂堆肥处理过的沼泽草的茎生长速率与对照植物没有显着差异。与对照植物相比，用成品Oil GatorTM堆肥处理的植物显示出较高的茎生长速率，显着性水平为0.05。最终的堆肥未对沼泽草产生植物毒性。

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