The batch test results showed that the CHXY119 and YATO411 immobilized bead completely
biodegraded each BTEX compound, and the maximum biodegradation rates were 0.790 mg l−1 h−1
for benzene, 1.113 mg l−1 h−1 for toluene, 0.992 mg l−1 h−1 for ethylbenzene and 0.231 mg l−1 h−1 for p-xylene.