지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
The presence of high silica in bamboo hinders the use of this material for production of rayon grade pulp. Research has been carried out to overcome this deficiency and improve quality of rayon grade pulp with the modification in pulping and bleaching process. Effect of acid boosted water prehydrolysis, sulphuric acid pre-treatment of unbleached pulp, chlorination stage at lower pH and treatment of bleached pulp with SO₂ water were evaluated. Acid boosted water prehydrolysis of chips reduces prehydrolysis time by 50 minutes as compared to water prehydrolysis. Treatment of unbleached pulp with sulphuric acid reduces ash, acid insoluble, silica, calcium and iron contents of the pulp by 56, 31, 82, 84 and 60% respectively. The addition of acid, increase in kappa factor in C<SUB>D</SUB> stage and combination of both were effective in removing silica in the pulp. Treatment of final bleached pulp with SO₂ water removes silica to a great extent and improves optical properties of the pulp as compared to H₂SO₄ or PAA. Pretreatment of the pulp with acid and modification in the bleaching process can reduce silica substantially and improve the quality of rayon grade bamboo pulp.
목차
ABSTRACT
1. INTRODUCTION
2. MATERIALS AND METHODS
3. RESULTS AND DISCUSSION
4. CONCLUSIONS
LITERATURE CITED
참고문헌 (13)
참고문헌 신청
1. [기타자료] - Farone, W.A / 1998 / Method of removing silica or silicates from solids resulting from the strong acid hydrolysis of cellulosic and hemicellulosic materials. US Patent No. 5782982
2. [학술지(정기간행물)] - Huseyin M / 2002 / Production of dissolving grade pulp from poplar wood by ethanol water process / Turkish Journal of Agriculture and Forestry 26 : 239 ~ 245
3. [기타자료] - Pekarovic, J / 2006 / Process for remov ing silica from cellulosic material. US Patent No. 20060225852
4. [인터넷자원] - / / www.ecvv.com/offerdetail/I895981.html
5. [학술지(정기간행물)] - Furtado, F.P / 2001 / Effect of the acid stage in ECF bleaching of Eucalyptus globulus kraft pulp bleachability and strength / Pulp and Paper Canada 102 (12) : 93 ~
2. [학술지(정기간행물)] - Huseyin M / 2002 / Production of dissolving grade pulp from poplar wood by ethanol water process / Turkish Journal of Agriculture and Forestry 26 : 239 ~ 245
3. [기타자료] - Pekarovic, J / 2006 / Process for remov ing silica from cellulosic material. US Patent No. 20060225852
4. [인터넷자원] - / / www.ecvv.com/offerdetail/I895981.html
5. [학술지(정기간행물)] - Furtado, F.P / 2001 / Effect of the acid stage in ECF bleaching of Eucalyptus globulus kraft pulp bleachability and strength / Pulp and Paper Canada 102 (12) : 93 ~
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UCI(KEPA) : I410-ECN-0101-2013-586-000419138