혼합고지의 효소 탈묵 및 무염소 표백

안병준; 백기현; Byoung Jun Ahn; Ki Hyon Paik

Journal of the Korean Industrial and Engineering Chemistry, Vol.13, No.7, 722-727, November, 2002

Export Citation

혼합고지의 효소 탈묵 및 무염소 표백

Enzyme Deinking and Totally Chlorine-Free Bleaching of Mixed Office Wastepaper

안병준, 백기현^{1, †}

일본 구주대학 임산학과
¹고려대학교 환경생태공학부, 서울 136-701

Byoung Jun Ahn, and Ki Hyon Paik^{1, †}

Department of Forest Products, Kyushu Universities, Japan
¹Division of Environmental Science and Ecological Engineering, Korea University, Seoul 136-701, Japan

E-mail:

초록

본 연구는 사무실 혼합고지의 효소탈묵과 무염소 표백의 효율을 밝히는 데 있다. 무염소 표백 후, 효소로 탈묵된 펄프의 백색도 증가는 기존 약품으로 탈묵된 펄프의 표백 후 백색도 증가보다 2 ~ 3 포인트 높았다. 3단 표백방법 중 환원표백-오존-과산화수소 3단 표백이 백색도 증가에 가장 효과적이었으며 표백 전 백색도가 낮은 경우(29.2 ~ 30.4 % ISO)에는 Y 표백, 표백 전 백색도가 높은 경우(58.0 % ISO)에는 F 표백이 우수한 결과를 나타냈다. 3단 표백 후 표백 펄프에서 b값의 변화는 표백방법에 따라 상당한 차이를 나타내고 있지만, a값은 대부분 y축에 근접한다. 환원표백제는 a, b값에 대하여 많은 영향을 미친다. 혼합고지는 색지의 혼입으로 인해 산화계 표백제만으로는 색 제거에 어려움이 있으므로 환원표백제를 통한 색 제거가 필수적이다. 그러나 혼합고지의 표백 전 백색도가 높을수록 환원표백제는 산화표백제에 비해 효과가 감소되었다. 한편 모든 3단 표백에서 최소한 15 % 이상의 인장 및 파열지수의 감소가 발생하였다.

This experiment was executed to determine the efficiency of enzyme deinking and totally chlorine-free bleaching of MOW. After totally chlorine-free bleaching, the increase on brightness by the enzyme-deinked pulp was two or three points greater than that of the pulp deinked with conventional chemical. Among the three-stage bleaching, Y (or FAS) sequence was the most effective on the improvement of brightness. Y state was favorable for the bleaching of low initial brightness, and FAS stage was good for that of high initial brightness. After the three stage bleaching, the variation of b value in deinked pulp depended on the types of bleaching methods used, however, the a value was close to the y axis. In every three-stage bleaching, the derease of the tensile strength and the burst strength was at least 15 %.

Keywords:enzyme deinking;bleaching;mixed office wastepaper;brightness

[References]

Granfeldt T, Grunstrom P, Lary E, Pulp Paper Can., 98(1), 62 (1997)
Norman JC, Sell NJ, Michael D, TAPPI J., 77(3), 151 (1994)
Scott WE, Gerber P, TAPPI J., 78(12), 125 (1995)
McBride DH, Pulp Paper, 149 (1992)
Walmsley MRW, Hird A, DeFoe RJ, Brooks S, Kneading Laser Inked Wastepaper : A laboratory Study, TAPPI Proceedings, Recycling Symposium, 417, TAPPI PRESS (1996)
Rangamannar G, Newton TG, Recycling of Mixed Office Waste, TAPPI Proceedings, Recycling Symposium, 73, TAPPI PRESS (1995)
Ferguson LD, Bleaching Wastepaper, Deinking Seminar, 4-3, TAPPI PRESS (1992)
Darlington B, Jezerc G, Kulikowski T, Magnotta V, Naddeo R, Waller F, White-Gaebe K, Secondary Fiber Cleaning and Bleaching: Evaluation of Alternatives, Conference Proceedings, Developments in Wastepaper Technology 18, Pira International (1993)
Tranbarulo RN, Ghosh CA, Burrus CA, Gordy W, J. Chem. Phys., 21, 851 (1953)
Soterland N, Norskskogind, 32, 199 (1978)
Iwasaki M, TAPPI J., 38(12), 1 (1984)
Kogan J, Perkins A, Muguet M, Bleaching Deinked Pulp with Ozone-Based, Reductive-Oxidative Sequences, TAPPI Proceedings, Recycling Symposium, 139, TAPPI PRESS (1995)
Kronis JD, Nimmerfroh N, Opportunities for FAS in Secondary Fiber Processing, Conference Proceedings, Developments in Wastepaper Technology, 17, Pira International (1993)
Ahn BJ, Paik KH, J. Korean Ind. Eng. Chem., 12(7), 724 (2001)
Sykes M, Klungness J, Abubakr S, Tan F, Bleachability of Recycled Fibers Deinked with Enzyme Preparations, TAPPI Proceedings, Recycling Symposium, 63, TAPPI PRESS (1996)
Szcucke CL, Kilgannon RR, Tappi Proc. Recycling Symp., 57, New Orleans, LA (1996)

[Referenced By]

[1] Granfeldt T, Grunstrom P, Lary E, Pulp Paper Can., 98(1), 62 (1997)

[2] Norman JC, Sell NJ, Michael D, TAPPI J., 77(3), 151 (1994)

[3] Scott WE, Gerber P, TAPPI J., 78(12), 125 (1995)

[4] McBride DH, Pulp Paper, 149 (1992)

[5] Walmsley MRW, Hird A, DeFoe RJ, Brooks S, Kneading Laser Inked Wastepaper : A laboratory Study, TAPPI Proceedings, Recycling Symposium, 417, TAPPI PRESS (1996)

[6] Rangamannar G, Newton TG, Recycling of Mixed Office Waste, TAPPI Proceedings, Recycling Symposium, 73, TAPPI PRESS (1995)

[7] Ferguson LD, Bleaching Wastepaper, Deinking Seminar, 4-3, TAPPI PRESS (1992)

[8] Darlington B, Jezerc G, Kulikowski T, Magnotta V, Naddeo R, Waller F, White-Gaebe K, Secondary Fiber Cleaning and Bleaching: Evaluation of Alternatives, Conference Proceedings, Developments in Wastepaper Technology 18, Pira International (1993)

[9] Tranbarulo RN, Ghosh CA, Burrus CA, Gordy W, J. Chem. Phys., 21, 851 (1953)

[10] Soterland N, Norskskogind, 32, 199 (1978)

[11] Iwasaki M, TAPPI J., 38(12), 1 (1984)

[12] Kogan J, Perkins A, Muguet M, Bleaching Deinked Pulp with Ozone-Based, Reductive-Oxidative Sequences, TAPPI Proceedings, Recycling Symposium, 139, TAPPI PRESS (1995)

[13] Kronis JD, Nimmerfroh N, Opportunities for FAS in Secondary Fiber Processing, Conference Proceedings, Developments in Wastepaper Technology, 17, Pira International (1993)

[14] Ahn BJ, Paik KH, J. Korean Ind. Eng. Chem., 12(7), 724 (2001)

[15] Sykes M, Klungness J, Abubakr S, Tan F, Bleachability of Recycled Fibers Deinked with Enzyme Preparations, TAPPI Proceedings, Recycling Symposium, 63, TAPPI PRESS (1996)

[16] Szcucke CL, Kilgannon RR, Tappi Proc. Recycling Symp., 57, New Orleans, LA (1996)