Biodegradation capacity

Table 3. Biodegradation Capacity, NMSHTD Artesia Maintenance Patrol Yard...

Biological Activity Indicator Artesia Value (mg/L) Utilization Factor11 Biodegradation Capacity mg/L % ... 

Kannan, K., Tanabe, S., Tatsukawa, R., 1994. Biodegradation capacity and residue pattern of organochlorines in Ganges River dolphins from India. Toxicol. Environ. Chem. 42, 249-261. 

A survey for the presence of indigenous MTBE biodegradation capacity was carried out by Salanitro et al. [14] who reported that two sites out of ten from different parts of the United States showed the presence of MTBE-degrading activity. 

In Europe, a similar study was carried out with soil samples from seven different locations in Belgium [18]. Only samples of a soil from one site with a history of MTBE contamination exhibited MTBE biodegradation capacity. These results clearly indicated that intrinsic aerobic degradation potential towards MTBE is rare in Belgium and that selective pressure is probably undergoing in such cases of ancient contamination. The authors proposed that this result could possibly be attributed to the relatively recent use of MTBE in Belgium (after 1988). 

In all the cases where biodegradation occurred, the biodegradation capacities were confirmed by subsequent cultures. It was thus possible to get stable microcosms with high degradation capacities (i) towards MTBE, as in the case of microcosms obtained from site 2 (Fig. la), and microcosms obtained from sites 7 and 8 (Figs. 2a and 2b, respectively) or (ii) towards ETBE, as in the case of microcosms obtained from site 2 (Fig. lb), and microcosms obtained from sites 3 and 6 (Figs. 3a and 3b, respectively). 

Obviously in cases where no biodegradation capacity was detected, the use of MNA would not be appropriate. On the contrary, the use of efficient and well-adapted strains could be suitable for cleaning-up the sites. Bioaugmentation was a valuable option in some cases of aquifers contaminated with MTBE [41,42]. The present study showed that microcosms that efficiently degraded MTBE and/or ETBE could be obtained following enrichment culture of material from contaminated sites, emphasizing the potential for bioaugmentation processes in contaminated sites. 

Lang E, Malik KA (1996) Maintenance of biodegradation capacities of aerobic bacteria during long term preservation. Biodegradation 7 65-71... 

From Newell, McLeod, and Gonzales (1996), the biodegradation capacity (mg/1) of an aquifer is defined as... 

Lignin is a potential substitute for oil-based phenols in phenolic and epoxy resins and adhesives [208, 209]. Incorporation of lignin into polymer matrix (polyolefin) offers certain benefits including improved chemical and/or physical properties, UV stabilization, and enhanced biodegradation capacity [209-212]. 

The up-flow sludge-blanket reactor is a water treatment approach that uses unique bio-granules containing anaerobic bacteria that have been acclimated for the degradation of waste components within a particular waste stream (Wu et al. 1993). The granules contain a mixed microbiota consortium that acts as a community with biodegradative capacities far beyond those of individual members. 

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