A new mathematical model to evaluate simazine removal in three different immobilized-biomass reactors

Martín, Margarita; Casasús, Luis; Garbi, Carlos; Nande, Mar; Vargas, Ronald; Robla, J. I.; Sánchez, M.; Allende, J.L.

doi:10.1016/j.watres.2007.09.026

Cited by 3 publications

(4 citation statements)

References 26 publications

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“…Thus, tepojal presents properties of high adherence to bacteria more than any other known material. Variations between COD removal and CFU values of this study represent the answer to the reactor efficiency without temperature control and without dissolved oxygen, while other studies do have temperature control and dissolved oxygen (Clarkson et al, 1993;Kodama et al, 2001;Lai et al, 2008;Martin et al, 2008). In the present study, variations have been found throughout the experiment, because the adhered microorganisms and the organic matter removal (measured like COD) are changing constantly.…”

Section: Resultsmentioning

confidence: 56%

“…In this case, Pseudomonas spp. were tested in other research and showed good results in the degradation of simazine (Garbi et al, 2006;Martin et al, 2008;Martin-Montalvo et al, 1997). Differing from other studies, the present research does not use pure cultures or sterile conditions, but mixed cultures under real surrounding conditions, which represents a unique contribution to the support use.…”

Section: Methodsmentioning

confidence: 98%

“…Sepiolite is an inorganic substrate, mainly produced in Spain (Martin et al, 2008). We used granular sepiolite for cell immobilization (Tolsa, Vicalvaro, Spain).…”

Section: Methodsmentioning

confidence: 99%

“…Currently, in Mexico, different natural supports are used for bacterial growth and in wastewater treatment, such as tezontle, charcoal, pumice, river sand, tepetate, perlite, zeolites, and vermiculite. Sepiolite has been used as a support medium for microbial adherence in different wastewater treatments in Spain, with good results (Arnaiz et al, 2006;Diez et al, 1995;Martin et al, 2008). For example, immobilized microorganisms are used for the decontamination of wastewater in treatment plants of fixed biofilm, with systems such as trickling filters, rotating biological contactors, or fluidized beds (Costerton et al, 1995;Garbi et al, 2006;Nicolella et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

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Biological Degradation of Simazine by Mixed‐Microbial Cultures Immobilized on Sepiolite and Tepojal Beads

Castro-González

Prieto-Jiménez

Domínguez-Vélez

et al. 2011

Water Environment Research

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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. Water Environ. Res., 83, 274 (2011).

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Section: Resultsmentioning

confidence: 56%

Section: Methodsmentioning

confidence: 98%

“…Sepiolite is an inorganic substrate, mainly produced in Spain (Martin et al, 2008). We used granular sepiolite for cell immobilization (Tolsa, Vicalvaro, Spain).…”

Section: Methodsmentioning

confidence: 99%