Dear OvGU fellow Salman Amjad, many thanks indeed for sharing this very interesting technical question with the RG community. In fact, the mineral struvite was discovered in my hometown Hamburg near the Nicolaikirche (famous church in Hamburg). I even own an original sample of struvite which was found right there. It is well known for the coffin lid-like form of its crystals. Unfortunately I don't have any personal experience with synthetic struvite. However, I know that it is always a good idea to use RG directly as a valuable source of information. For example, please have a look at the followig potentially helpful article:

Precipitation and Crystallization of Struvite from Synthetic Wastewater under Stoichiometric Conditions

Article Precipitation and Crystallization of Struvite from Synthetic...

This paper is freely available as public full text on RG, so that you can download it as pdf file.

I hope this helps. Good luck with your work and best wishes, Frank Edelmann

FOR CRYSTAL GROWTH PROCESS

FOLLOWING PARAMETRES REQUIRED

SOLUBILITY,CONCENTRATION, SPECIFIC GRAVITY, pH OF SOLUTION

REFER MY RESEARCH PAPER

The Study of Crystal Growth of Struvite in Gel Media.

IF HELPFUL

REPLY ME

You can check the papers below for more information:

Article Formation of struvite from agricultural wastewaters and its ...

https://www.sciencedirect.com/science/article/abs/pii/S0957582000709141

Regards,

K