Pratiwi DS, Udaibah W, Kustomo K. Synthesis of Hydrochar Cassava peels with hydrothermal carbonization method and applications as hard water softener. J. Nat. Scien. & Math. Res. [Internet]. 2021 Jun. 30 [cited 2025 Jun. 7];7(1):34-43. Available from: https://journal.walisongo.ac.id/index.php/JNSMR/article/view/11283