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Volume 43, Issue 5
Displaying 1-2 of 2 articles from this issue
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: Batch Test EvaluationMasashi TAKEKAWA, Yuki NAKAGAWA, Keiji TAKAI, Satoshi SODA, Michihiko ...2014 Volume 43 Issue 5 Pages 293-300
Published: May 20, 2014
Released on J-STAGE: June 02, 2014
JOURNAL FREE ACCESSIn order to investigate the possibility of simultaneous anammox and heterotrophic denitrification（SAD）as a novel nitrogen removal process, batch experiments for nitrogen removal from synthetic wastewater containing acetate, nitrate, and ammonium were conducted using a mixture of activated sludge and anammox sludge. It is suggested that anammox bacteria removed ammonium and nitrite reductively generated from nitrate by heterotrophic denitrifiers existing in the activated sludge. In the batch experiments with the acetate-C/nitrate-N ratios over 0.5, total nitrogen removal was higher than 90% by occurrence of SAD. These results suggest that the SAD process can efficiently remove nitrogen under a wide range of the C/N concentrations, especially under low C/N ratios.View full abstractDownload PDF (966K)
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Taketoshi UZAWA, Youbin MOON2014 Volume 43 Issue 5 Pages 286-292
Published: May 20, 2014
Released on J-STAGE: June 02, 2014
JOURNAL FREE ACCESSDNA detection methods by staining agarose gels after electrophoresis were evaluated to find safer ones suitable for experiment on environmental education. Detection method using dye and visible rays is thought to be safer than the method using ethidium bromide and ultraviolet rays. Three methods using dye and visible rays: staining by（a）ViewaBlueⓇ Stain,（ b）stains-all, or（ c）indoine blue and methyl orange, were compared with detection method using ethidium bromide. These detection methods were less sensitive than that using ethidium bromide. In the methods using dye and visible rays, stains-all method was the most sensitive.Moreover, costs of each methods were estimated for educational use.View full abstractDownload PDF (967K)
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