Anaerobic digestion of thermal-alkaline-pretreated cephalosporin bacterial residues for methane production.
Optimum anaerobic conditions of cephalosporin bacterial residues after thermal-alkaline pretreatment were determined by orthogonal experiments. And through biochemical methane potential tests (BMPs) for cephalosporin bacterial residues, the ability for bacterial degradation of cephalosporin was also evaluated. The thermal-alkaline pretreatment with the optimum values of 6% NaOH at 105 °C for 15 min significantly improved digestion performance. With the thermal-alkaline pretreatment, the specific methane yield of the pretreated cephalosporin bacterial residue increased by 254.79% compared with that of the un-pretreated cephalosporin bacterial residue. The results showed that anaerobic digestion of thermal-alkaline-pretreated cephalosporin bacterial residues could be one of the options for efficient methane production and waste treatment.



This work investigates the thermal-alkaline pretreatment of cephalosporin bacterial residues, which can increase their methane yield by 254.79% compared with no pretreatment. The digestion performance is significantly improved under the condition of 6% NaOH at 105 °C for 15 min. The results show that anaerobic digestion of thermal-alkaline-pretreated cephalosporin bacterial residues could be one of the options for efficient methane production and waste treatment.
a School of Environmental Science and Engineering , Hebei University of Science and Technology , Shijiazhuang , People's Republic of China.
Guixia
G
Li
a School of Environmental Science and Engineering , Hebei University of Science and Technology , Shijiazhuang , People's Republic of China.
Weizhang
W
Zhong
a School of Environmental Science and Engineering , Hebei University of Science and Technology , Shijiazhuang , People's Republic of China.
Rui
R
Wang
a School of Environmental Science and Engineering , Hebei University of Science and Technology , Shijiazhuang , People's Republic of China.
Jiaqi
J
Chen
a School of Environmental Science and Engineering , Hebei University of Science and Technology , Shijiazhuang , People's Republic of China.
Zaixing
Z
Li
D000693:Anaerobiosis; D001419:Bacteria / Q000378:metabolism; D002511:Cephalosporins / Q000378:metabolism*; D008697:Methane / Q000378:metabolism*
D002511:Cephalosporins; D008697:Methane