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논문 기본 정보

자료유형
학술저널
저자정보
Byeongcheol Min (Chungbuk National University) Surya N. Jampana (State University of New York) Christoper M. Thomas (State University of New York) Bandaru V. Ramarao (State University of New York)
저널정보
한국펄프·종이공학회 펄프·종이기술 펄프·종이기술 제50권 제2호(통권 제181호)
발행연도
2018.4
수록면
77 - 82 (6page)
DOI
10.7584/JKTAPPI.2018.04.50.2.77

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초록· 키워드

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Buffer substitution method were studied to improve the efficiency and to reduce cost of enzymatic hydrolysis of paper mill waste fines. The method is utilization of CaCO₃ in waste fine as a buffer material to substitute traditional buffer chemicals using in hydrolysis process. The 0.05M of sodium acetate buffer required 8.2 ㎏ of sodium acetate and 2.0 ㎏ of acetic acid per 100 ㎏ of waste fines to make the pH 5. When buffer solution and waste fines were mixed, the pH of the mixture shifted to 6.5-7.0 due to the dissociation of CaCO₃. The shifted pH was adjusted with addition of extra acids such as sulfuric acid and acetic acid to reach the pH to 5.2. Adjustment of pH increased waste fine hydrolysis yield from 33.7% to 41.4% by addition of extra acetic acid as much as 6.3 ㎏ per 100 kg of waste fines. For the buffer substitution method, only 7.7 ㎏ of acetic acid was demanded without sodium acetate for the same pH level (pH 5.2) of the mixture. The buffer substitution method resulted in 40.8% of hydrolysis yield which was comparable result of pH adjustment of buffer. The buffer substitution method reduced the requirement of 8.2 ㎏ of sodium acetate and 0.6 ㎏ of acetic acid for 100 ㎏ of waste fine hydrolysis. Addition of sulfuric acid resulted adverse effects compared to addition of acetic acid for both pH adjustment and buffer substitution.

목차

Abstract
1. Introduction
2. Materials and Method
3. Results and Discussion
4. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2018-586-002101704