Effect of different bleaching reagents and process sequences on the properties of steam-exploded empty fruit bunch (EFB) fiber

Bleaching reagent process is essential for the production of cellulose, pulp, and paper to increase the appearance and quality of the final products. Empty fruit bunch (EFB) is an agricultural waste with a lignocellulosic constituent. Recently, the conversion of EFB towards pulp for food packaging and paper manufacturing or cellulose-based materials has been actively developed in lab and pilot scales. However, obtaining efficient extraction and bleaching processes is still the main challenge. In this paper, the effect of different bleaching reagent at different sequences towards the brightness properties of the EFB fiber is observed. The EFB fiber was pre-treated using steam explosion process, hot water treatment, and alkaline treatment before undergoing the bleaching process. Four systems of bleaching process were set using NaOCl and NaO2Cl as the bleaching reagents. Two sets of the system are using single reagent and the other two sets are using mixed reagent. In the single reagent bleaching system, four stages of bleaching process were used for each NaO2Cl (C) and NaOCl (H) solution respectively. Meanwhile, the mixed bleaching reagent was conducted with two stages of processes with different sequence of reagents (CH and HC). The bleached cellulose obtained via these two systems were characterized in terms of brightness, chemical composition, thermal characteristic, and degree of crystallinity. The mixed bleaching reagent system the HC has produced the best quality of cellulose with brightness at 77.68%. The chemical and thermal characteristic of the bleached pulp fiber did not change when the bleaching method was applied to the fibers. Even though a single bleaching reagent system with sodium chlorite shows almost similar brightness at 78.66%, the quantity of solvent used is higher compared to the mixed bleaching reagent system. As a conclusion, mixed bleaching reagent system is an efficient system to produce a better quality of cellulose and paper from EFB.

[1]  S. Jamari,et al.  Production of cellulose nanofiber (CNF) from empty fruit bunch (EFB) via mechanical method , 2020 .

[2]  N. Bhardwaj,et al.  Effectiveness of different green chemistry approaches during mixed hardwood bamboo pulp bleaching and their impact on environment , 2018, International Journal of Environmental Science and Technology.

[3]  O. Rojas,et al.  A Review of Cellulose and Cellulose Blends for Preparation of Bio-derived and Conventional Membranes, Nanostructured Thin Films, and Composites , 2018 .

[4]  Paul Memmott,et al.  Isolation of cellulose nanofibrils from Triodia pungens via different mechanical methods , 2015, Cellulose.

[5]  H. Khalil,et al.  Exploration of a Chemo-Mechanical Technique for the Isolation of Nanofibrillated Cellulosic Fiber from Oil Palm Empty Fruit Bunch as a Reinforcing Agent in Composites Materials , 2014 .

[6]  S. Chang.  An overview of empty fruit bunch from oil palm as feedstock for bio-oil production , 2014 .

[7]  R. Zakaria,et al.  Cellulase Production from Treated Oil Palm Empty Fruit Bunch Degradation by Locally Isolated Thermobifida fusca , 2012 .

[8]  A. Dufresne,et al.  Extraction of cellulose nanocrystals from mengkuang leaves (Pandanus tectorius) , 2012 .

[9]  Rajesh D. Anandjiwala,et al.  Extraction of nanocellulose fibrils from lignocellulosic fibres: A novel approach , 2011 .

[10]  H. Youn,et al.  HYDROGEN PEROXIDE BLEACHING OF HARDWOOD KRAFT PULP WITH ADSORBED BIRCH XYLAN AND ITS EFFECT ON PAPER PROPERTIES , 2011 .

[11]  T. Iwata,et al.  Isolation, preparation, and characterization of nanofibers from oil palm empty-fruit-bunch (OPEFB) , 2010 .

[12]  Sabu Thomas,et al.  Isolation of nanocellulose from pineapple leaf fibres by steam explosion , 2010 .

[13]  Morsyleide de Freitas Rosa,et al.  Cellulose nanowhiskers from coconut husk fibers: Effect of preparation conditions on their thermal and morphological behavior , 2010 .

[14]  P. Chang,et al.  Bionanocomposites based on pea starch and cellulose nanowhiskers hydrolyzed from pea hull fibre: Effect of hydrolysis time , 2009 .

[15]  V. Álvarez,et al.  Extraction of cellulose and preparation of nanocellulose from sisal fibers , 2008 .

[16]  Haiping Yang,et al.  Characteristics of hemicellulose, cellulose and lignin pyrolysis , 2007 .

[17]  F. López,et al.  Pulping and bleaching of pulp from olive tree residues , 2001 .

[18]  W. Boerjan,et al.  Biotechnology in trees: Towards improved paper pulping by lignin engineering , 2001, Euphytica.

[19]  I. Rushdan,et al.  Characterization of nanofibrillated cellulose produced from Oil Palm Empty Fruit Bunch Fibers (OPEFB) using ultrasound. , 2016 .

[20]  H. Abimanyu,et al.  Effect of Alkaline Pretreatment on Properties of Lignocellulosic Oil Palm Waste , 2015 .

[21]  A. Johari,et al.  Isolation, characterization, and application of nanocellulose from oil palm empty fruit bunch fiber as nanocomposites , 2014 .

[22]  Hao Ren,et al.  A HIGHER BRIGHTENING OF MECHANICAL PULPS , 2012 .