Comparison of Inoculated Eri Cocoon and Eco-block for Pollutant Removal
キーワード:
eco-block,
eri cocoon,
Lactobacillus spp,
Bacillus natto,
water pollutant removal,
NO3-N consumption
2014 年 5 巻 1 号 p. 53-57
詳細
2014 年 5 巻 1 号 p. 53-57
The most popular medium for microorganism immobilization is eco-block. The easiest microorganism to obtain in Japan is Bacillus natto and used for producing food for human consumption. While, eri Cocoon has proven to be an efficient immobilization medium for bacteria. Lactobacillus spp. is a beneficial bacteria easily obtained in every country in the world. The main objective was to compare the performance of inoculated eri cocoon and inoculated eco-block for glucose and NO3-N consumption. As a secondary objective we compared, through the inoculation rates, the capacity of eri cocoon and eco-block to allocate Lactobacillus and Bacillus natto separately. The methodology of this study was divided into two stages. First, a comparison of eco-block and eri cocoon’s ability to allocate microorganisms within its structures; and second, the comparison of consumption between inoculated eri cocoon and inoculated eco-block. The comparison of the amount of Lactobacillus and Bacillus natto to be allocated by the eco-block and the eri cocoon, we found that there are no significant differences between the amounts of both Lactobacillus and Bacillus nattowhich can allocate, however, a higher inoculation rate was found in eri cocoon medium. Addition to the consumption of glucose for both microorganisms showed a significant difference between Lactobacillus and Bacillus natto.Lactobacillushad a higher consumption rate. When comparing within both different bacteria, the result foundthat the eri cocoon performed better against eco-block. In comparison the use of inoculated eri cocoon showed better results in both consumption of glucose and NO3-N of both Bacillus natto and Lactobacillus. However, when comparing Bacillus natto and Lactobacillus, the last one showed better consumptions when combined with eri cocoon and Bacillus natto showing better results when combined with eco-block. In conclusion, pending an economical study, eri cocoon inoculated with Lactobacillus spp. presents the best option as a water pollutant removal tool.
