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Abstract
Biodeinking is a process of separating ink on the fiber surface by enzymes. This research was conducted to study and optimize biodeinking condition of sorted white ledger (SWL) by cellulase. Commercial cellulase (Sigma Aldrich, Singapore) at a dose of 0.25; 0.5; 0.75; 1; 2 U/g dry weight pulp was applied to the deinking of SWL and compared with blank. The deinked pulp was then analyzed for the fiber morphology and made laboratory hand sheets for the characterization of physical and optical properties. Based on the experiment, at the optimum dose of cellulase 0.75 IU/g dry weight pulp was obtained a maximum increasement of ISO brightness by 4.7 points and a decreasement of ERIC by 34.45%. The use of celulase on the biodeinking was not affecting the fibers length and diameter so the tensile and tear index of deinked pulp unchanged. Loss of fines by enzymatic degradation causes the tear index decreased by 8.70 % and porosity increased. The increasement of coarseness resulted in the decreasement of pulp opacity.
ABSTRAK
Biodeinking merupakan proses pemisahan tinta pada permukaan serat menggunakan enzim. Penelitian ini dilakukan untuk mempelajari dan memperoleh kondisi optimum biodeinking sorted white ledger (SWL) menggunakan selulase. Selulase komersial (Sigma Aldrich, Singapura) dengan dosis 0,25; 0,5; 0,75; 1; 2 U/g kering pulp diaplikasikan pada deinking SWL dan dibandingkan terhadap blanko. Pulp deinked yang diperoleh kemudian dilakukan analisis morfologi serat dan dibuat lembaran tangan laboratorium untuk karakterisasi sifat fisik dan optik. Berdasarkan percobaan, pada dosis optimum selulase 0,75 IU/g kering pulp diperoleh kenaikan derajat cerah ISO maksimum sebesar 4,7 poin dan penurunan ERIC 34,45%. Analisis morfologi serat menunjukkan penggunaan selulase pada proses biodeinking tidak berpengaruh terhadap panjang dan diameter serat sehingga indeks tarik dan retak pulp deinked tidak berubah. Kehilangan fines karena degradasi enzimatik menyebabkan indeks sobek turun sebesar 8,70% dan porositas naik. Naiknya nilai coarseness menyebabkan meningkatnya opasitas pulp deinked.
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Abudakr, M., Scott, G. M. and Klungness, J. H. (1995) ‘Fiber fractionation as a method of improving handsheet properties after repeated recycling’, Tappi Journal -Recycling, pp. 123–126.
APKI (2015) ‘Kebutuhan Kayu untuk Kertas Meningkat’, Media Indonesia, 24 February.
Azmi, N. S. and Him, N. R. N. (2016) ‘Comparative evaluation of esterase and cellulase enzymatic deinking towards laser printed paper’, in Mechanical Engineering & Science Postgraduate International Conference. Shah Alam, Selangor.
Bradford, M. M. (1976) ‘A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding’, Analytical Biochemistry, 72(1–2), pp. 248–254. doi: 10.1016/0003-2697(76)90527-3.
Casey, J. P. (1981) Pulp and Paper : Chemistry and Chemical Technology. 3rd edn. New York: Wiley-Interscience.
Choi, K. H., Kim, A. R. and Cho, B. U. (2016) ‘Effects of alkali swelling and beating treatments on properties of kraft pulp fibers’, BioResources, 11(2), pp. 3769–3782. doi: 10.15376/biores.11.2.3769-3782.
Das, A. et al. (2013) ‘Production of cellulolytic enzymes by Aspergillus fumigatus ABK9 in wheat bran-rice straw mixed substrate and use of cocktail enzymes for deinking of waste office paper pulp’, Bioresource Technology. Elsevier Ltd, 128(September 2017), pp. 290– 296. doi: 10.1016/j.biortech.2012.10.080.
Dutt, D. et al. (2012) ‘Effect of enzyme concoctions on fiber surface roughness and deinking efficiency of sorted office paper’, Cellulose Chemistry and Technology, 46(9– 10), pp. 611–623.
Gil, H. H. A. et al. (2013) ‘Study of the enzymatic/ neutral deinking process of waste photocopy paper’, O Papel, 74(8), pp. 61–65.
Gupta, V., Garg, S. and Capalash, N. (2015) ‘Production of thermo-alkali-stable laccase and xylanase by co-culturing of Bacillus sp. and B. halodurans for biobleaching of kraft pulp and deinking of waste paper’, Bioprocess and Biosystems Engineering, 38(5), pp. 947–956. doi: 10.1007/s00449- 014-1340-0.
Hariyanti, D. (2017) Kemenperin: Kualitas Kertas Bekas Lokal Rendah. Available at : http://www.kemenperin.go.id/artikel/11378/ kuantitas-kertas-bekas-lokal-rendah (Access ed: 4 December 2017)
Kumar, V. and Satyanarayana, T. (2014) ‘Production of endoxylanase with enhanced thermostability by a novel polyextremophilic Bacillus halodurans TSEV1 and its applicability in waste paper deinking’, Process Biochemistry. Elsevier Ltd, 49(3), pp. 386–394. doi: 10.1016/j. procbio.2013.12.005.
Lasheva, V. et al. (2013) ‘Deinging of recycled paper with offset printing through flotation and use of enzymes’, Journal of Chemical Technology and Metallurgy, 48(5), pp. 530– 534.
Lee, C. K., Darah, I. and Ibrahim, C. O. (2007) ‘Enzymatic deinking of laser printed office waste papers: Some governing parameters on deinking efficiency’, Bioresource Technology, 98, pp. 1684–1689. doi: 10.1016/j.biortech.2006.05.052.
Lee, K. C. et al. (2017) ‘Evaluation of enzymatic deinking of non-impact ink laser-printed paper using crude enzyme from Penicillium rolfsii c3-2(1) IBRL’, Applied Biochemistry and Biotechnology. Applied Biochemistry and Biotechnology, 181(1), pp. 451–463. doi: 10.1007/s12010- 016-2223-4.
Lu, Z. et al. (2016) ‘Characteristics of PPTA chipped fiber / hibrid and their properties for sheet making’, Journal of Engineered Fibers and Fabrics, 11(1), pp. 1–8.
Mayeli, N. and Talaeipour, M. (2010) ‘Effect of different HLB value and enzymatic treatment on the properties of old newspaper deinked pulp’, BioResources, 5(4), pp. 2520–2534.
Miller, G. L. (1959) ‘Use of dinitrosalicylic acid reagent for determination of reducing sugar’, Analytical Chemistry, 31(3), pp. 426–428. doi: 10.1021/ac60147a030.
Nik Raikhan Nik Him, Caroline Apau and Nurul Shafika Azmi (2016) ‘Effect of temperature and pH on deinking of laser-jet waste paper using commercial lipase and esterase’, Jounal of Liife Sciences and Technologies, 4(2), pp. 79–84. doi: 10.18178/jolst.4.2.79-83.
Purwita, C. A. et al. (2013) ‘Endoglukanase rekombinan Egl-II sebagai agen biodeinking’, in Seminar Teknologi Pulp dan Kertas. Bandung, 2-10-2013, pp. 111–118.
Saxena, A. and Singh Chauhan, P. (2017) ‘Role of various enzymes for deinking paper: a review’, Critical Reviews in Biotechnology, pp. 598– 612. doi: 10.1080/07388551.2016.1207594.
Sharada, R. et al. (2014) ‘Applications of cellulases – review’, International Journal of Pharmaceutical, Chemical and Biological Sciences, 4(2), pp. 424–437.
Singh, A. et al. (2012) ‘An ecofriendly cost effective enzymatic methodology for deinking of school waste paper’, Bioresource Technology. Elsevier Ltd, 120, pp. 322–327. doi: 10.1016/j.biortech.2012.06.050.
Sood, Y. V et al. (2005) ‘Quality improvement of paper from bamboo and hardwood furnish through fiber fractionation’, Journal of Scientific and Industrial Research, 64(4), pp. 299–305.
Sridach, W. (2010) ‘Pulping and paper properties of palmyra palm fruit fibers’, Songklanakarin Journal of Science and Technology, 32(2), pp. 201–205.
Sundblad, S. (2015) ‘Predictions of pulp and paper properties based on fiber morphology’.
Watson, P. and Bradley, M. (2009) ‘Canadian pulp fibre morphology: superiority and considerations for end use potential’, Forestry Chronicle, 85(3), pp. 401–408.
Wirawan, S., Rismijana, J. and Hidayat, T. (2008) ‘Aplikasi α-amilase dan selulase pada proses deinking kertas bekas campuran’, Berita Selulosa, 43(1), pp. 11–18.
Zhang, M. Y. et al. (2011) ‘Effect of PPTA fiber morphology on the performance of paperbased functional materials’, Application of Chemical Engineering. Trans Tech Publications, 236, pp. 1453–1456. doi: DOI 10.4028/www.scientific.net/AMR.236- 238.1453.
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