D. Sugandi, D. Agustiawan, E. Wijayanto, M. O. P. . Marpaung, M. Y. Ayyash, and N. Wahyuni, “DEGRADATION OF HUMIC ACID BY FLOATING PHOTOCATALYST TiO2/Cu-ARECA FIBER”, JKR, vol. 9, no. 1, pp. 10–19, Jun. 2024.