Cadmium Removal from Scallop Mid-Gut Gland Wastes by Dilute Sufuric Acid Leaching and Electrowinning Processes.
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- SHIMAKAGE Kazuyoshi
- 室蘭工業大学工学部材料物性工学科
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- HIRAI Shinnji
- 室蘭工業大学工学部材料物性工学科
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- TAMAKI Sachi
- 室蘭工業大学工学部材料物性工学科
Bibliographic Information
- Other Title
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- 希硫酸浸出/電解法によるホタテ貝中腸腺廃棄物(通称ウロ)からのカドミウムの除去
- キリュウサン シンシュツ デンカイホウ ニ ヨル ホタテガイ チュウ チョウセン ハイキブツ ツウショウ ウロ カラ ノ カドミウム ノ ジョキョ
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Abstract
In order to recycle the organic waste of scallop mid-gut gland as fertilizer and fish meal, a novel removal process of cadmium contained in scallop mid-gut gland has been developed by using both dilute sulfuric acid leaching and electrowinning.<BR>In this investigation, cadmium removal degree from scallop mid-gut gland was examined under various leaching and electrowinning conditions.<BR>The experimental results obtained are summarized as follows:<BR>1) In advance, sample of scallop mid-gut gland waste was treated to eliminate greasy component because a cathode electrode plate in an electrowinning process was partially covered by the greasy component.<BR>2) The cadmium removal degrees by this process gave the high values from 97% to 98% for leaching time of 3 hours and electrowinning time of 5 hours under the following optimum conditions: sulfuric acid concentration is 0.54 mol/l or 0.9 mol/l, temperature 40°C or 60°C and electrowinning voltage 3.8V or 4.6 V.<BR>3) The cadmium concentration of scallop mid-gut gland waste was reduced to 5 ppm or less (based on dry weight) by this process, and scallop mid-gut gland waste was utilized as fertilizer and fish meal.<BR>4) A novel removal process of cadmium contained in scallop mid-gut gland waste was shown as a flow chart.<BR>5) In this process, cadmium deposits recovered on the cathode electrode plate during the electrowinning may be recycled as mineral resources.
Journal
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- RESOURCES PROCESSING
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RESOURCES PROCESSING 49 (3), 134-140, 2002
The Resources Processing Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204267255168
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- NII Article ID
- 130003638133
- 10009756297
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- NII Book ID
- AN10136265
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- ISSN
- 18839150
- 09124764
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- NDL BIB ID
- 6304199
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed