Penyisihan Hidrokarbon pada Tanah Tercemar Crude Oil di Pertambangan Minyak Bumi Rakyat Wonocolo, Bojonegoro dengan Metode Co-composting Aerobik

Rizkiy Amaliyah Barakwan, Gina Lova Sari, Yulinah Trihadiningrum
Submission Date: 2017-01-23 09:47:22
Accepted Date: 2017-03-17 10:12:43

Abstract


Metode co-composting dapat diaplikasikan sebagai teknik bioremediasi tanah tercemar crude oil dari pertambangan rakyat Wonocolo, Bojonegoro. Penelitian ini dilakukan bertujuan untuk menentukan kemampuan metode co-composting dalam menyisihkan hidrokarbon pada tanah tercemar crude oil dengan penambahan sampah organik secara aerobik. Proses co-composting aerobik berlangsung selama 60 hari dalam skala laboratorium. Pada penelitian ini ada dua variasi yaitu komposisi tanah tercemar dan sampah organik yang ditambahkan (100/0, 50/50; 75/25; 87,5/12,5; dan 0/100) dan jenis sampah (sampah kebun, rumen sapi, dan campuran keduanya). Hasil analisis menggunakan soxhlet dan gravimetri menunjukkan kadar hidrokarbon dalam tanah tercemar crude oil mencapai 6,05%. Co-composting berjalan dengan baik ditandai dengan optimalnya faktor-faktor pendukungnya yaitu suhu, pH, kadar air, dan rasio C/N. Hal ini dapat menunjang aktivitas bakteri terlihat dari terjadinya peningkatan populasi bakteri selama proses co-composting berlangsung. Hasil penelitian menunjukkan penyisihan kadar hidrokarbon terbaik ditemukan pada reaktor S/R50 (T/S: 50/50 dengan jenis sampah campuran sampah kebun dan rumen sapi). Persentase penurunan hidrokarbonnya adalah sebesar 33,32%.

Keywords


Co-composting, crude oil, hidrokarbon, rumen sapi, sampah kebun

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