“The Potential of Centong Cactus (Opuntia cochenillifera) as a Remediation Agent for Sidoarjo Mud Polluted Soil with Indicators of Fe Content Reduction and Plant Growth: Potensi Kaktus Centong (Opuntia cochenillifera) Sebagai Agen Remediasi Tanah Tercemar Lumpur Sidoarjo Dengan Indikator Penurunan Kadar Fe dan Pertumbuhan Tanamannya”, PELS, vol. 2, no. 2, June 2022, doi: 10.21070/pels.v2i2.1269.