EFFECTS OF STORAGE ON PHOSPHORUS RECOVERY FROM URINE
EFFECTS OF STORAGE ON PHOSPHORUS RECOVERY FROM URINE
复制标题
储存对尿液中磷回收的影响
DOI：
10.1080/09593330801987145
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发表时间：
2008
影响因子：
2.8
通讯作者：
D. Mavinic
中科院分区：
文献类型：
--
作者：
Elizabeth Tilley;J. Atwater;D. Mavinic
摘要 在使用合成尿液的实验室实验中，检查了温度、粪便污染、稀释度和顶空对用作鸟粪石回收原料的尿液的影响。还研究了添加不同量的镁对可从溶液中去除的磷量的影响。当尿分解迫使钙和镁矿物质沉淀后，将镁添加到尿液中时，平均可以以鸟粪石的形式去除 62% 的磷。研究发现稀释和粪便脲酶的存在会影响尿素分解速率，但不会影响回收的鸟粪石的纯度。这些结果表明，通过简单地储存尿液直至其 pH 值达到 8 或更高，只需添加镁即可从源头分离的尿液中回收鸟粪石。
Abstract In laboratory experiments using synthetic urine the effect of temperature, faecal contamination, dilution and headspace on urine to be used as a feedstock for struvite recovery were examined. The effects of adding different quantities of magnesium on the amount of phosphorus that could be removed from solution was also examined. An average of 62% of phosphorus could be removed in the form of struvite when magnesium was added to the urine solution after ureolysis had forced the precipitation of calcium and magnesium minerals. Dilution and the presence of faecal urease were found to affect the rate of ureolysis but not the purity of the struvite recovered. These results indicate that, by simply storing urine until it achieves a pH of 8 or greater, struvite can be recovered from source‐separated urine with only a magnesium addition.