Recovery of Biomass Incinerated as Struvite-K Precipitates Followed Aluminium Removal

Abstract

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 (KMgPO 4 •6H 2 O) 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 HNO 3 and the solution was mixed with KH 2 PO 4 and MgCl 2 •6H 2 O 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.

Glyphosate Removal from Water Using Biochar Based Coffee Husk Loaded Fe3O4

“…In conjunction with this issue, coffee husks that undergo heat treatment to produce biochar (a pyrolysis process of numerous types of biomasses under low-concentrated oxygen conditions) have been proven to hold great potential to create adsorbent material [26]. Several studies have used coffee husk biochar to remove pollutants, such as dye and heavy metals [27,28].…”