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Current management of phosphate-bearing resources (mainly rock phosphates, RPs), which in fact are finite non-renewable sources, is quite far from the principles of sustainability and may cause an escalating price increase mainly because of increases in RP-processing costs. One of the most studied approaches in solubilization of insoluble phosphates is the biological treatment of phosphate-bearing materials. In this work, we propose a microbial extraction of phosphate from insoluble inorganic natural sources as a ...

Biotechnological solubilization of insoluble inorganic phosphate-bearing materials is now accepted as one of the most viable alternative to the traditional chemical methods. Many microorganisms are capable of solubilizing phosphates although this feature is mainly attributed to metabolites such organic acids. During the recent years, we have developed various biotechnological schemes of P-solubilization based on citric acid (Aspergillus niger, Yarrowia lipolytica), gluconic acid (Penicillium variabile), and oxalic...