Study of Struvite Crystal Growth with The Addition of Tartaric Acid Dyah Suci Perwitasari, Sintha Soraya Santi, Stefanus Muryanto, J Jamari and AP Bayuseno E3S Web Conf., 328 (2021) 01003 Published online: 06 December 2021 DOI: 10.1051/e3sconf/202132801003