Journal of Environmental Conservation Engineering

Online ISSN : 1882-8590
Print ISSN : 0388-9459
ISSN-L : 0388-9459

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Volume 44, Issue 6

Displaying 1-1 of 1 articles from this issue

Effective Utilization of Scallop Processing Waste

Huifeng REN, Uaijie MO, Makiko ENOKI, Ryoji FUKUDA, Hiroshi SUGIURA, ...

2015 Volume 44 Issue 6 Pages 334-341
Published: June 20, 2015
Released on J-STAGE: November 19, 2015

DOIhttps://doi.org/10.5956/jriet.44.334

JOURNAL FREE ACCESS

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The methods used for the removal of harmful heavy metal cadmium from the waste caused by processing sea scallops were investigated to utilize this waste for fertilizer and livestock feed. We found that: （a）The Cd concentration in the waste could be reduced to below 0.56 ㎎/㎏/ N1％, by optimizing the chelating fiber concentration and the number of times it is used.（b）The ability of the chelating fiber to adsorb Cd was almost fully restored by treating it with 1.5 mol/L hydrochloric acid.（c）The chelating fiber was able to be used 30 times.（d）During the process of regenerating the used chelating fiber, the Cd concentration remaining in the supernatant could be reduced to 0.1 ppm（㎎/㎏）or less when waste liquid containing Cd was treated with eggshell adsorbent.

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