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Biological Degradation of Simazine by Mixed‐Microbial Cultures Immobilized on Sepiolite and Tepojal Beads
Author(s) -
CastroGonzález A.,
PrietoJiménez D.,
DomínguezVélez A.,
MerinoCastro G.
Publication year - 2011
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143010x12681059116572
Subject(s) - simazine , sepiolite , degradation (telecommunications) , chemical oxygen demand , chemistry , biodegradation , microbial consortium , pulp and paper industry , microbial biodegradation , biochemical oxygen demand , microorganism , biofilm , environmental chemistry , environmental science , chromatography , environmental engineering , raw material , atrazine , bacteria , biology , wastewater , agronomy , pesticide , organic chemistry , telecommunications , genetics , computer science , engineering
Simazine degradation by mixed microbial cultures was carried out in biological reactors with tepojal and sepiolite beads. The inoculum used is derived from a biotechnological product applied to plant roots, which contains mixed microbial cultures. This inoculum presented a stable adherence to the microorganism support throughout the experiment. In this research, the supports were evaluated in relation to both biofilm formation and simazine removal. For this study, hydraulic and mass starting‐up parameters were established for simazine degradation and for the use of these reactors in the two types of supports. Tepojal had never been used before as a microbial support in any previous research paper. Tepojal demonstrated to be more efficient than sepiolite. Statistical analysis was done for the relationship among the parameters of chemical oxygen demand, colony formation units, total suspended solids, and volatile suspended solids.