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标题：Recovery of Biomass Incinerated as Struvite-K Precipitates Followed Aluminium Removal
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作者：Endar Hidayat ; Hadi Imran A. Halem ; Yoshiharu Mitoma 等
期刊名称：Green and Sustainable Chemistry
印刷版ISSN：2160-6951
电子版ISSN：2160-696X
出版年度：2021
卷号：11
期号：3
页码：96-106
DOI：10.4236/gsc.2021.113009
语种：English
出版社：Scientific Research Publishing
摘要：Phosphorus (P) and potassium (K) are non-renewable materials and widely in many industries such as agricultural sectors. On the other hand, the demand of P and K as fertilizers increases which following global population. The nutrient source of P and K which get from biomass waste i.e. incinerated of activated sludge and coffee husk biochar, respectively. The present study was conducted recovery of P and K as struvite-K (KMgPO4·6H2O) precipitates. The results showed that aluminium was released simultaneously with P from incinerated activated sludge with precipitate of Al:P of 1:1, K:P of 0.5, and Mg:P of 3. However, aluminium was inhibited to form struvite-K. Then, we examined cation removal especially for removed Al by dissolved 0.5 M HNO3 and the solution was mixed with KH2PO4 and MgCl2·6H2O as source of K and Mg, respectively. The results showed aluminium (Al) was removed with precipitate K:P of 0.5, and Mg:P of 0.8. This study was confirmed that recovery of biomass incinerated was successful as struvite-K and can be used as fertilizers.
关键词：Struvite-K;Recovery of Biomass Waste;Coffee Husk;Sludge Waste;Precipitates