Oil Sludge Phytoremediation Using Mangrove (Avicennia marina, Xylocarpus granatum, and Rhizopora mucronata)
This research was conducted at Ecotourism Mangrove Forest in Karangsong Beach, Indramayu Regency. Total Petroleum Hydrocarbon (TPH) quantitative test was conducted at the Laboratory of Chemical Research Center Institute of Sciences of Indonesia, Bandung from April to October 2017. The purpose of this study was to determine the ability of seedlings of Avicennia marina, Xylocarpus granatum, and Rhizopora mucronata in lowering the TPH level in soils contaminated with petroleum. Petroleum-contaminated sediment samples were taken from Balongan, Indramayu. The research was done by experimental methods which used Completely Randomized Design (CRD) with treatments: A - Avicennia marina; B - Xylocarpus granatum; C - Rhizophora mucronata; D - Medium control without any addition of oil sludge; E - Control medium for each mangrove and growth observation. It was then followed by TPH level analysis of the growing media and the plants’ growth. The results of this research show that R. mucronata has the best effectivity to decrease TPH in the petroleum-contaminated soil by 32.82% from 23.72 to 15.94 mg/g, followed by X. granatum with a value of 29.28% from 26.68 to 18.87 mg/g and A. marina by 16.3% from 25.35 to 18.68 mg/g; oil sludge can be used as a supplementary content for the media of mangrove seedlings.