“Optimasi Removal Logam Pb Sungai Porong Sidoarjo Terdampak Lumpur Lapindo Menggunakan Biokoagulan Ekstrak Daun Mangga”. Journal of Research and Technology, vol. 10, no. 1, June 2024, pp. 83-90, https://doi.org/10.55732/jrt.v10i1.1116.