Biodegradasi naftalena oleh Pseudomonas aeruginosa DRK 9.1 asal lumpur vulkanis di Desa Renokenongo, Kabupaten Sidoarjo = Biodegradation of naphthalene by pseudomonas aeruginosa DRK 9.1 isolated from volcanic mud in Renokenongo Village, Sidoarjo Regency