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KMID : 0380020140290060414
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Korean Journal of Biotechnology and Bioengineering
2014 Volume.29 No. 6 p.414 ~ p.420
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Ethanol Production from Red, Brown and Green Seaweeds and Biosorption of Heavy Metals by Waste Seaweed Slurry from Ethanol Production
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Sunwoo In-Yung
Ra Chae-Hun
Kwon Seong-Jin
Heo Ji-Hee
Kim Ye-Jin
Kim Ji-Woo
Shin Ji-Ho
Ahn En-Ju
Cho Yu-Kyeong
Kim Sung-Koo
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Abstract
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The seaweeds with high carbohydrate ratio Gelidium amansii, Saccharina japonica and Enteromorpha intestinalis were used as red, brown, and green seaweeds, respectively. Thermal acid hydrolysis, enzymatic saccharification and fermentation were carried out using those seaweeds to produce ethanol. The ethanol concentrations from red, brown and green seaweed were 14.8 g/L, 11.6 g/L and 9.9 g/L, respectively. After the production of ethanol, the seaweeds were reused to absorb heavy metal. The maximum biosorption ratio was Cu(II) (89.6%), Cr(III) (82.9%), Ni(II) (66.1%). Cu(II) had the highest affinity with 3 waste seaweeds. Red seaweed was verified the most effective substrates to both process.
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KEYWORD
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Seaweed, Ethanol, Biosorption, Heavymetal, Waste seaweeds
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