Isolation of a thermophilic bacterium, Geobacillus sp. SH-1, capable of degrading aliphatic hydrocarbons and naphthalene simultaneously, and identification of its naphthalene degrading pathway

► A thermophilic bacterium SH-1 could degrade aliphatic hydrocarbons and naphthalene. ► The C12-C21 n-alkanes in crude oil could be degraded almost completely in 8 days. ► 100 mg L−1 Naphthalene could be degraded to non-detectable level within 72 h. ► A biodegradation pathway of naphthalene under thermophilic condition was proposed.