Ammonium-pillared montmorillonite-CoFeO composite caged in calcium alginate beads for the removal of Cs from wastewater.

Novel and magnetic adsorbent ammonium-pillared montmorillonite-CoFeO composite caged in calcium alginate beads was prepared by using non-toxic raw materials. The morphology, magnetic properties, functional groups, and crystal structure of the compound were characterized by SEM, VSM, FT-IR and XRD. The adsorption behaviors were also investigated via adsorption experiments and response surface methodology was used to optimize the operation conditions.

Anaerobic biodegradation of benzene series compounds by mixed cultures based on optional electronic acceptors.

A series of batch experiments were performed using mixed bacterial consortia to investigate biodegradation performance of benzene, toluene, ethylbenzene and three xylene isomers (BTEX) under nitrate, sulfate and ferric iron reducing conditions. The results showed that toluene, ethylbenzene, m-xylene and o-xylene could be degraded independently by the mixed cultures coupled to nitrate, sulfate and ferric iron reduction. Under ferric iron reducing conditions the biodegradation of benzene and p-xylene could be occurred only in the presence of other alkylbenzenes.

[Biodegradation of benzene series compounds under nitrate reducing conditions].

A series of batch experiments were performed using mixed bacterial culture to investigate the biodegradability of benzene, toluene, ethylbenzene and the xylene isomers (BTEX) under denitrifying conditions. The results show that BTEX can be degraded effectively by the mixed bacterial culture. The biodegradation of BTEX could be modeled by the substrate inhibition Monod equation.