Bunch Fiber Research Articles

Preparation and characterization of physical properties of molded pulp from empty fruit bunches of oil palm

This research aims to determine the impact of pretreatment on empty fruit bunches (EFB) of palm oil fibers before the pulping process on the quality of the molded pulp produced. The study includes EFB fiber pretreatment processes, pulp production, pulp molding, physical characteristic analysis, and molded pulp performance evaluation. The pulp production process involves acid-base hydrolysis reactions. The produced molded pulp is done manually. Characterization of the molded pulp includes measurements of paper grammage, thickness, density, and moisture content. The characteristics of pulp produced from pretreated EFB fibers are as follows: an average grammage value of 415.48 g/m², paper thickness of 1.53 mm, water absorption capacity of 13.33-33.33%, density of paper of 0,026 x 106 - 0,027 x 106 g/m3, and a smooth surface morphology. Meanwhile, the characteristics of pulp produced from without pretreatment EFB fibers include an average grammage value of 372.18 g/m², paper thickness of 0.77 mm, water absorption capacity of 20.34-43.21%, density of paper of 0,004 x 106 - 0,008 x 106 g/m3, and a rough surface morphology due to pores on the fiber surface.

Controlling N-Doping Nature at Carbon Aerogels from Biomass for Enhanced Oxygen Reduction in Seawater Batteries.

Pyridinic N-type doped at carbon has been known to have better electrocatalytic activity toward the oxygen reduction reaction (ORR) than the others. Herein, we proposed to prepare pyridinic N doped at carbon aerogels (CaA) derived from biomass, i.e., coir fiber (CF) and palm empty fruit bunches (PEFBs), by adjusting the pyrolysis temperature during carbonization of the biomass-based-cellulose aerogels. The cellulose aerogels were prepared by the ammonia-urea system as the cellulose solvent, in which ammonia also acted as a N source for doping and urea as the cellulose cross-linker. The as-prepared cellulose aerogels were directly pyrolyzed to produce N-doped CaA. It was found that the type of N doping is dominated by pyrrolic N at pyrolysis temperature of 600 °C, pyridinic N at 700 °C, and graphitic N at 800 °C. The pyridinic N exhibited better performance as an electrocatalyst for the ORR than pyrrolic N and graphitic N. The ORR using pyridinic N follows the four-electron pathway, which quantitatively implies a more electrochemically stable process. When used as a cathode for the Mg-air battery using a 3.5% NaCl electrolyte, the pyridinic N CaA exhibited excellent performance by giving a cell voltage of approximately 1.1 V and delivered a high discharge capacity of 411.64 mA h g-1 for CF and 492.64 mA h g-1 for PEFB corresponding to an energy density of 464.23 and 529.49 mW h g-1, respectively.

Sandwich Composite Panel from Spent Mushroom Substrate Fiber and Empty Fruit Bunch Fiber for Potential Green Thermal Insulation

Massive generation of natural waste fiber from agricultural industries followed by improper disposal management might result in a detrimental effect on our ecosystem contributing to various types of environmental pollution. With the growing significance of climate change, an effort is being undertaken by utilizing natural waste fiber into eco-friendly insulation panels to reduce the environmental impact of buildings. In this research, a composite panel was developed from spent mushroom substrate (SMS) and empty fruit bunch (EFB) fibers via a sandwich technique. Five samples were made, each with a different fiber ratio (100 SMS: 0 EFB, 80 SMS: 20 EFB, 60 SMS: 40 EFB, 40 SMS: 60 EFB, and 0 SMS: 100 EFB) at density 0.8 g/cm3. Fourier transformation infrared (FTIR) Soxhlet extraction followed by thermogravimetric analysis (TGA) indicated that the SMS and EFB fibers were relevant for fabrication into a composite panel for thermal insulation. Thermal conductivity, thermal resistance, and thermal diffusivity values for these five composite samples were 0.231 to 0.31 W/(mK), 0.0194 to 0.0260 m2K/W, and 0.2665 to 0.3855 mm2/s, respectively. The flexural strength of the composite was at the range 15.61 to 23.62 MPa. These research findings suggest that the fabrication of a sandwich composite panel from SMS and EFB fiber is a promising alternative way to utilize natural waste fiber.

In situ growth g-C3N4 particles on carbon fiber cloth as flexible and easily reusable visible-light-driven photocatalysts

Graphitic carbon nitride (g-C3N4) powder has been extensively applied for photocatalysis, while its practical application is impeded by reusability problems. To solve this issue, we have fabricated flexible and easily recyclable photocatalysts by in situ growing g-C3N4 on carbon fiber cloth (CFc) via dip-coating and following a pyrolysis method. The obtained cloth (area: 4 cm × 4 cm) consisted of carbon fiber (diameter: ∼20 μm) bunches covered by g-C3N4 nanoparticles. CFc/g-C3N4 exhibits a broad absorption spectrum with an absorption edge of 460 nm. CFc/g-C3N4 can degrade 94.8 % Rhodamine B (RhB) in 80 min and 97.3 % parachlorophenol (4-CP) in 100 min reaction, respectively under visible light illumination. Moreover, CFc/g-C3N4 maintains good photocatalytic efficiency of 89.7 % after four times recycling tests. Therefore, CFc/g-C3N4 has the potential for practical photocatalysis application.

Microwave-Assisted Pyrolysis of Oil Palm Biomass: Multi-Optimisation of Solid Char Yield and Its Calorific Value Using Response Surface Methodology

Recovery of oil palm resources is essential towards conserving environment. This study investigated the behaviour of oil palm kernel shells (PKS), palm mesocarp fibre (PMF) and empty fruit bunch (EFB) through microwave assisted pyrolysis. Power level (300–1,000 W), exposure time (10–30 min) and mass loading (20–50 g) were varied to determine its influence on char yield and calorific value at one-factor-at-a-time (OFAT) analysis. Model equations obtained from Box-Behnken design was used for Response Surface Methodology (RSM) in determining the optimum operating condition. It was found that the power level has least important influence on the solid char yield of EFB and PMF. No significant impact on the solid char yield of PMF beyond 10 min of exposure. Maximum mass inside the pyrolyser for EFB, PMF, and PKS are 40, 50, and 25 g, respectively. Calorific values of solid char produced were comparable to a low rank coal (>22 MJ/kg). From the RSM analysis, the optimum conditions for obtaining high char yield and calorific values have been determined with power level of 300 W, exposure time in the range of 16.7–32 min, and biomass mass in the range of 20–40.4 g. The outcome from this analysis is vital as it provides an alternative solution to utilise oil palm industrial wastes to be converted to solid fuel as source of renewable fuel and reduce its pollution to the environment.

Practical level-of-detail aggregation of fur appearance

Fur appearance rendering is crucial for the realism of computer generated imagery, but is also a challenge in computer graphics for many years. Much effort has been made to accurately simulate the multiple-scattered light transport among fur fibers, but the computation cost is still very high, since the number of fur fibers is usually extremely large. In this paper, we aim at reducing the number of fur fibers while preserving realistic fur appearance. We present an aggregated fur appearance model, using one thick cylinder to accurately describe the aggregated optical behavior of a bunch of fur fibers, including the multiple scattering of light among them. Then, to acquire the parameters of our aggregated model, we use a lightweight neural network to map individual fur fiber's optical properties to those in our aggregated model. Finally, we come up with a practical heuristic that guides the simplification process of fur dynamically at different bounces of the light, leading to a practical level-of-detail rendering scheme. Our method achieves nearly the same results as the ground truth, but performs 3.8×-13.5× faster.

Manufacturing and Testing of Mulch Sheet from Agricultural Waste Raw Materials

This study aims to make sheet organic mulch from several agricultural wastes and determine the best type of material for making sheet organic mulch. This research was carried out at the Greenhouse of the Faculty of Agriculture and the Laboratory of Agrotechnology, Faculty of Agriculture, Samudra University, Langsa City, Aceh Province which took place from February to April 2021.This study used a non-factorial completely randomized design (CRD) with four replications and used several agricultural waste materials consisting of bagasse, water hyacinth, rice straw, corn husks, banana fronds, coconut fiber and empty fruit bunches of oil palm. The raw materials used are agricultural waste 2.4 Kg and NaOH 0.168 Kg. The parameters observed in this study were water absorption, mulch moisture content and mulch yield.The results showed that the type of agricultural waste had a very significant effect on the sheet mulch produced. For water absorption parameters, raw material from bagasse (M1) is the best treatment. As for the water content parameter, the best treatment was found in Coconut Coir (M6) while the best treatment for the mulch yield parameter was found in Rice Straw (M3) agricultural waste.Based on the results of the study, to produce the best sheet mulch, it is recommended to use agricultural waste material from rice straw (M3).  

Effects of membrane relaxation rate on performance of pilot-scale membrane aerated biofilm reactors treating domestic wastewater

The membranes of a Membrane Aerated Biofilm Reactor (MABR) function as bubble-less air diffusers and bio-carriers. Recent bench-scale experiments reported that the shape of membranes influenced the oxygen transfer and utilization rates, which in turn affected the pollutant removal performance of the MABR. In this study, two pilot-scale MABRs using multi-layer hollow fiber membranes with the relaxation rates of 0.1–1.8% (MABR 1) and 1.0–2.8% (MABR 2) were used for the treatment of organics and nitrogen in real medium-strength domestic wastewater. Higher-relaxation-rate membranes have loose and more curved fiber bunch that may allow biofilm to grow more easily and let air diffuse more efficiently. MABR 2 had achieved better performance than MABR 1 at 12- and 6-h Hydraulic Retention Time (HRT), with respectively 0.7–4.3%, 17.7–18.1%, and 5.5–9.0% higher removal efficiencies for Chemical Oxygen Demand (COD), Ammonia Nitrogen (NH4+), and Total Nitrogen (TN). The highest COD, NH4+, and TN removal efficiencies were 94.7%, 81.1%, and 57.1%, respectively, at 12 h HRT in MABR 2. The addition of Polyvinyl Alcohol (PVA) gel beads carrying denitrifying bacteria had enhanced the denitrification in both the reactors. Increments of 5.0–9.0% and 6.6–12.3% were reported for TN removal efficiencies of MABR 1 and 2 combined with PVA gel, sequentially.

Energy Potential of Oil Palm Empty Fruit Bunch (EFB) Fiber from Subsequent Cultivation of Volvariella volvacea (Bull.) Singer

EFB and EFB-based mushroom compost (SMC) from Volvariella volvacea cultivation is a promising energy feedstock because it has adequate nutrient quality. The biochemical methane potential (BMP) and calorific value (CV) of this biomass are investigated. Other analyses such as proximate, compositional, and final analysis; thermogravimetric analysis (TGA); and Fourier transform infrared spectroscopy (FTIR) are also performed. The biomass samples consist of two types of EFB, namely fibers (F) and pellets (P) and SMC from the subsequent cultivation of Volvariella volvacea, with samples FS and PS from the first cultivation and FS2 and PS2 from the second cultivation. P produces the highest biological efficiency (BE) of 28% compared to 9.83% for F. Subsequent cultivation with FS and PS then produces only 2.9 and 6.83% of BE. A higher amount of methane is measured in samples P and PS2, while better biodegradability is observed in PS2 and FS2, suggesting that subsequent cultivation is a good pretreatment of the substrate for anaerobic digestion (AD). CV is highest in F (20.57 MJ/kg), followed by P (19.06 MJ/kg), which is comparable to commercial wood pellet. Samples F, FS, and FS2 have higher ash content, which is due to higher mineral content. The cellulose composition is reduced to almost 50% during cultivation due to fungal metabolism, which is also evidenced by FTIR analysis. TGA analysis revealed that EFB-based SMC exhibits higher weight loss during combustion compared to EFB, which reduces its thermal properties. SMC of EFB is a high potential biomethane feedstock, but not recommended as a fuel pellet.

Development and validation of an analytical method for tensile strength determination of fibrous bulk solids

The increasing significance of products consisting of elongated particles or fibres along with a lack of understanding flow properties of fibrous bulk solids in processes urge for appropriate test procedures.Therefore, a tensile tester was designed with respect to the special needs in terms of test techniques of those bulk solids. The procedure of tensile strength determination was tested with regard to several possible influencing factors. Following from that, the manner of filling and filling height were identified to have the greatest influence on results. Furthermore, it is shown that the developed load system is capable of improving the repeatability of test results for fibrous bulk solids.Based on the derived standard procedure, systematic tests were carried out on beech and spruce chips in three different fractions each as well as model materials such as polypropylene fibres and differently sized bunches of glass fibres. The biomass materials have been characterised by dynamic image analysis prior to and after experiments resulting in particle size and shape factor distributions. It is found that tensile strength is affected by particle shape, size, roughness and interparticle contact area.

Failure Studies on Adhesive Bonded and Bolted Joints of Natural Fiber Composites

Composites with natural fibers as reinforcements are playing a vital role in recent developments. The present work deals with the fabrication of okra and empty fruit bunch banana fiber polyester matrix composites with varying reinforcement content (5%, 10%, and 15%). Composites were fabricated by using the hand layup technique. After the fabrication process, composites were then adhesively bonded and also joined with bolts. The main objective of this work is to analyse the failure studies on adhesive bonded and bolted joints of okra and empty fruit bunch banana composite specimens. The specimens were tested under tensile load, flexural creep studies, and SEM analysis. It has been observed that empty fruit bunch banana fiber composites exhibited better joint strength properties under tensile loading when compared to the okra fiber composites. To estimate the flexural creep behaviour, all the samples were tested at a constant load of 2.5kg and 5kg. The deflections obtained during regular time intervals (four months) were noted. The presence of internal defects and void content was observed by using the scanning electron microscope. The results showed that adhesive-bonded composites were exhibited less deflection compared to the bolted joints. The empty fruit banana fiber composites exhibited higher creep than okra fiber composites. Decreased creep with the increased fiber has been observed in both cases. SEM Adhesively bonded joints possessing better sustainability as compared to the bolted joints in both the fiber-reinforced composites.

Energy balance analysis on Rimbo Dua palm oil

Palm Oil Mill is an industry that uses biomass as an energy generator to run the process. The biomass used is fiber, shells, and empty fruit bunches. Energy efficiency is needed in the process; therefore, it requires energy balance in the power generation system, distribution, and use of energy produced by biomass. PKS Rimbo Duo has a processing capacity of 30 tonnes/hour. Broadly speaking, the energy system at PKS Rimbo Dua includes steam energy production equipment such as boilers and steam and electricity energy conversion equipment in the form of steam turbines and generators (alternators) as well as storage equipment for the expansion of steam energy in the form of opposing pressure storage vessels (BPV). Energy balance analysis is carried out by analyzing data methods obtained from the performance of operating equipment and conducting field surveys and measurements of predetermined parameters, especially in boilers, water treatment, and turbines. Analysis of fuel use is also carried out to determine the quality of the fuel and the potential for steam produced. The result of this research is that the average efficiency of the boiler is 63.23%, which is still below the 73% boiler design. One of the reasons is that the flue gas temperature reaches 260 oC. The steam turbine has an efficiency of 44% isentropically with SSC = 31.9 kg / kWh when compared to the standard norm, the SSC value is still too high. The results of the water analysis also found the P and M alkalinity values, and the water pH was still 9.8. The results of the analysis of these data can be used as a reference for actions whether it is a repair of equipment, replacement of equipment, and improvement of operational parameters.

Assessment of power generation potential from the cofiring of Elaeis Guineensis Residues with coal pellets in a popular Nigerian palm oil research institute

ABSTRACT The effect of cofiring elaeis guineensis residues with coal pellets for power generation was investigated. Samples of elaeis guineensis residues (palm kernel shell (PKS), palm fiber (PF) and empty fruit bunch (EFB)), and coal were collected and pulverized. The pellets were thereafter produced mechanically, using an optimized mixing ratio of 80:20. Coal palm kernel shell (CPKS), coal palm fiber (CPF), coal empty fruit bunch (CEFB), and coal (C) pellets were thereafter produced and characterized in accordance with the ASTM standard. Results obtained show that the caloric values of CPKS, CPF, CEFB, and C pellet were 28033 kJ/kg, 27695 kJ/kg, 27687 kJ/kg and 22021 kJ/kg, respectively. While the % ash was 11.15%, 12.97%, 12.75%, 14.89%; % sulfur was 0.7%, 0.71%, 0.73% and 0.76% for CPKS, CPF, CEFB, and C, respectively. Four case scenarios; A (raw biomass without power generation), B (raw biomass with power generation), C (raw biomass converted to pellets) and D (raw biomass blended with coal pellets) were compared. Case D was found to have the highest power generation potential and energy utilization efficiency of 3.378 MW and 84.43%, respectively. Cofiring of elaeis guineensis residues with the coal pellets, reduced percentage ash and sulfur contents of combusted pure coal.

Assessment of Stabilized Silt Clay Sand with Oil Palm Fibre Bunch (OPFB) Local Fibre for Slope Foundations: A Case of Coastal Soils of Mombasa, Kenya

Improvement of shear strength parameters is essential for designing the OPFB fiber mix with silt clay sand for slope stability. The objective of this study was to assess the stabilized silt clay with oil palm fibre bunch (OPFB) local fibre for slope foundation. Series of laboratory tests were conducted on various materials under study and the results revealed that, OPFB mix can be used as an additive to cement for purpose of improving engineering properties of the Silt Clay sand to cut down costs without compromising the set standards. It was established that, the shear strength parameters of the soil-fibre mixture (φ and C) can be improved significantly up to an optimum and reach a certain point where it starts to decline. The shear stress–strain curves obtained from the CU triaxial tests for reinforced sands with 30 mm fibre length together with those for unreinforced silty sand were compared; the result indicated that, fibre-reinforced specimen showed higher deviator stress at 0.25% fibre and reduces at 0.5% fibre. The strain corresponding to the peak deviator stress was increased by fibre content. Patterns of stress–strain curves for all reinforcedsamples indicated improvement in the deviator stress for all compositions and fibre content. Deviator stress of fibre-reinforced soil showed a slight increase with increasing pore pressure. The increase of the fibre content caused an increase in pore water pressure due to inclination of specimens to decrease the volume. Changes in the shear strength of fibre-reinforced soil indicated that soil strength parameters (internal friction angle φ’ and cohesion C’) increase as the internal friction surface increases between fibre and soil at certain point.

Heating Characteristics of Palm Oil Industry Solid Waste and Plastic Waste Mixture using a Microwave Oven

A microwave thermogravimetric analyzer was used to measure the characteristics of a mixture of palm oil solid waste (fiber, shell, and empty fruit bunch) and polyethylene terephthalate (PET). In the study, the range of palm oil solid waste composition ratios to PET used was 100:0, 75:25, 50:50, 25:75, and 0:100 (by weight). The study included the influence of the quality of raw material on the heating process. The mixture of palm oil solid waste (fiber, shell, and empty fruit bunch) and PET proved to impact the heating rate, mass-loss rate, and energy consumption. Based on the observation, empty fruit bunch-PET mixture had the highest heating rate (average 1.5039oC/s) than shell (average 0.6058oC/s), and fiber (0.9119oC/s) and also had the highest mass-loss rate (average 0.0253 g/s). The highest biomass (shell, empty fruit bunch, and fiber) and PET composition ratio give the highest rate of heating rate (average 1.8264oC/s) and mass-loss rate (average 0.02875 g/s). In addition, the increasing ratio of fixed carbon and material density will impact the increasing heating rate and mass-loss rate and decrease energy consumption. Therefore, fixed carbon and material gaps significantly affect the heating rate.

Influence of Biomass Based Carbon Black as Filler Composite on Tensile and Impact Strength

Carbon blacks (CB), derived from agricultural waste, bamboo stem, coconut shells and oil palm empty fiber bunch, were obtained by pyrolysi used as filler in epoxy composites. The aim of this study was to identify the effect of biomass based carbon black on the tensile and impact strength carbon black – epoxy composite. In this research, carbon black was biomass based. The matrix was epoxy resin Bakelite EPR 174 and epoxy hardener versamid 140 while, the methodology for making the composite was hand lay-up method. The composite were made at 5, 10, 15, 20 volume percentage carbon black then the composite tested with the tensile and impact strength. The highest tensile strength was 44,65 MPa 5 volume percentage carbon black and the highest impact strength was 5.47 MPa volume percentage carbon black. While, based on the result of Scanning Electron Microscope (SEM) analysis showed there were agglomeration at the particle of carbon black, pull out, and void.

Constitutive Modeling of multi-stimuli-responsive shape memory polymers with multi-functional capabilities

Nowadays, shape memory polymers (SMPs)-based devices are required to be much smarter to produce large shape memory recovery and recovery force with lower working temperatures in order to enable multi-functionality in them. They could play a vital role in the advancement of multi-functional soft robot manipulators, biomedical tools and wearable devices where the working temperatures is a key challenge and must be around the body temperature, or in sustainable smart systems with low energy consumption. The aim of this paper is to introduce thermo-electro-magneto-responsive fibrous SMPs (TEMFSMPs) as a new class of SMPs with highly enhanced shape recovery and recovery force and reduced working temperature. A three-dimensional constitutive model is developed to simulate thermo-electro-magneto-visco-hyperelastic behaviors of SMPs under large deformation for the first time. Constitutive relations are derived by adopting an electro-magneto-visco-hyperelasticity theory and implementing it in a thermo-mechanical cycle of SMPs. To improve the strength of thermo-electro-magneto-responsive SMPs, a bunch of fibers is also embedded into the SMP matrix. Then, the proposed model for thermo-electro-magneto-responsive fibrous shape memory polymers (TEMFSMPs) under uniaxial tension and complex loading regimes such as simultaneous torsion and extension are solved semi-analytically. In addition, the thermo-mechanical response through the proposed model is validated via available SMP experimental tests. Numerical results reveal that electro-magnetic features can significantly enhance shape memory recovery and recovery force of TEMFSMPs and lower their working temperatures. It is found that the electro-magnetic field, the orientation, and stiffness of fibers can effectively be set to tune the shape memory effect and bio-applicability of TEMFSMPs with highly enhanced stress/strain recovery and reduced working temperature.

Extraction and Characterization of Corn Leaf Fiber

ABSTRACT Corn leaves were collected after harvesting corn and the fibers were extracted by water retting. The fibers were subjected to alkali treatment in order to enhance the mechanical as well as handle properties. The physico-mechanical properties of the retted and alkali-treated corn leaf fibers were analyzed using various analytical and statistical methods. The change in chemical composition due to alkali treatment was determined using Fourier transmission infrared spectroscopy and chemical composition analysis. Results inferred that 15 days retting gives better quality of fibers. The alkali treatment resulted in the removal of lignin, fats, and waxes as well as the disintegration of individual fibers from the retted fiber bunch. Bundle strength, elongation, and moisture properties were found to improve after chemical treatment. The study shows that corn leaf fiber has good potential in technical textile applications.

Production of valuable chemicals from oil palm biomass using hot-compressed water method

Oil palm industry discharges a large amount of biomass waste which can be converted into energy and chemicals. Hence, several biomass conversion methods are available, such as fermentation, pyrolysis, and gasification. In this work, the hot-compressed water method was proposed to produce valuable chemicals from oil palm biomass (oil palm fiber, shell, and empty fruit bunches). Each material was individually treated in a batch autoclave reactor at 200–300 °C for 30 min. After separation, the total organic carbon of the liquid product was measured by a Shimadzu TOC-5000A instrument, while its composition was analyzed by HPLC and GC/MC apparatus. Experimental results showed that liquid product of oil palm wastes contains various chemicals such as glucose, xylose, 5-HMF, furfural, acetic acid, formic acid, phenol, catechol, and phenol 2,6-di-methoxy. This liquid product composition was strongly dependent on the temperature treatment. In general, sugar-derived compounds (glucose, xylose, 5-HMF, furfural, acetic acid, formic acid) were primarily found in lower temperature; meanwhile, lignin-derived compounds (phenol, catechol, and phenol 2,6-di-methoxy) were mainly obtained in higher temperature.

Alternative scenarios to utilise excess biogas in Palm Oil Mill

Palm Oil Mill is a factory which converts Fresh Fruit Bunch (FFB) to Crude Palm Oil (CPO) and Palm Kernel Oil (PKO). Within FFB converting processes, two types of waste are produced: 1)liquid waste and 2)solid waste. Liquid waste, named Palm Oil Mill Effluent (POME), contributes up to 60% of total FFB. Solid waste includes palm kernel shell and meal, fibre and empty fruit bunch gives in aggregate around 20% of total FFB. Initially, Palm kernel shell (PKS) is commonly utilised as fuel for boiler. Then in some mills, POME was additionally used as biomass for biofuel production (biogas) to support power supply in the mill. Biogas is utilised to generate electricity for Kernel Crushing Plant (KCP). Field observation data shows that electricity demand for KCP is 19.5 MWh/day or equivalent with 45% of total biogas production. The excess biogas, equivalent with 11,000 kWh/day, is flared. An alternative scenario instead of flaring is to use biogas as fuel for boiler. Thus, the previous fuel (PKS) could potentially be allocated for selling. Another scenario is to utilise excess biogas electricity generation to be distributed to staff houses near the mill. Therefore, this research study aims to calculate excess biogas that could be used for those scenarios: 1)Fuel substitution in the mill with different type of process, 2)Household electricity. Result shows that biogas demand in each scenario can supply 1) Minimum 2,900 kWh/day for non-processing hours and 6,436.65 kWh/day for processing hours, 2) Electricity for 557 houses/day.