Open Access

ARTICLE

Silica Gel from Chemical Glass Bottle Waste as Adsorbent for Methylene Blue: Optimization Using BBD

Suprapto Suprapto, Putri Augista Nur Azizah, Yatim Lailun Ni’mah^*

Chemistry Department, Faculty of Science and Analytical Data, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia

* Corresponding Author: Yatim Lailun Ni’mah. Email: