Aluminium recovery vs. hydrogen production as resource recovery options for fine MSWI bottom ash fraction
Aluminium recovery vs. hydrogen production as resource recovery options for fine MSWI bottom ash fraction
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DOI：
10.1016/j.wasman.2013.01.037
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发表时间：
2013-05-01
期刊：
影响因子：
8.1
通讯作者：
Grosso, Mario
中科院分区：
文献类型：
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作者：
Biganzoli, Laura;Ilyas, Aamir;Grosso, Mario
垃圾焚烧底灰细粒含有大量的铝，但以往的研究表明，目前基于标准步进式涡流分离(ECS)的回收方案效率有限。在本文中，我们评估了通过增加一个粉碎和筛分步骤来提高ECS的效率。通过测量氢气的产生量来量化金属铝的回收效率。用X射线荧光光谱仪(XRF)对灰样进行了全铝含量测试。作为材料回收的替代方案，我们还研究了将残留的金属铝转化为有用能量的可能性，通过在高pH下使金属铝与水反应来促进H-2气体的产生。结果表明，该厂的总铝浓度较低。
Waste incineration bottom ash fine fraction contains a significant amount of aluminium, but previous works have shown that current recovery options based on standard on-step Eddy Current Separation (ECS) have limited efficiency. In this paper, we evaluated the improvement in the efficiency of ECS by using an additional step of crushing and sieving. The efficiency of metallic Al recovery was quantified by measuring hydrogen gas production. The ash samples were also tested for total aluminium content with X-ray fluorescence spectroscopy (XRF). As an alternative to material recovery, we also investigated the possibility to convert residual metallic Al into useful energy, promoting H-2 gas production by reacting metallic Al with water at high pH. The results show that the total aluminium concentration in the