Environmental Engineering Reference
In-Depth Information
Table 7.2
(continued)
Entrapment
matrix
Environmental
medium
Microorganism
Contaminant
Reference
PPVA
Agrobacterium
radiobacter
J14a
Atrazine
Synthetic
agricultural
infiltrate
Siripattanakul et al.
[7]
PPVA
Mixed culture
Atrazine
Synthetic
agricultural
infiltrate
Siripattanakul et al.
[75]
The calcium alginate matrix contains numerous pores while providing a strong
network for cell restriction and proliferation as shown in scanning electron micro-
scopic (SEM) images in Fig. 7.8. Large numbers of cells are present both inside and
on the surface of the matrix. It has been reported that CA entrapped cell bioaug-
mentation greatly improves the wastewater treatment operation and efficiencies. For
example, Guiot et al. [66] examined phenol and cresol removal by the bioaugmented
CA entrapped acclimated mixed cultures in an upflow anaerobic sludge blanket
reactor (UASB). The results showed that the UASB with the bioaugmented CA
Fig. 7.8
SEM images of calcium alginate entrapped nitrifying bacteria: (
a
) Bead surface after
entrapment, (
b
) Interior bacterial floc after entrapment, (
c
) Surface rupturing bacterial colony after
experiments, and (
d
) Interior bacterial colony after experiments [44]
