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Teuku Meurah Indra Riayatsyah
Mechanical Engineering Department, Institut Teknologi Sumatera, Lampung, 35365, Indonesia

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Journal article
Published: 01 June 2021 in Clean Energy
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As one way to eliminate the issues found in the preceding generation, feedstock exploration in second-generation bioethanol production remains an issue, especially for a tropical country such as Indonesia. From exotic fruit by-products, durian holds a promising perspective that rests on its abundance, superb carbohydrate content and limited usage until now. This work presents the first-ever utilization of durian seeds for sugar production under optimized conditions through alkaline hydrolysis. A simple form of sugar was extracted by varying four parameters, namely substrate loading, NaOH concentration, hydrolysis time and hydrolysis temperature. Response surface methodology based on the Box-Behnken design was employed to outline the most optimum parameter values. Analysis of variance revealed that the quadratic model fit the data appropriately with the order of significance as substrate loading > hydrolysis time > NaOH concentration > hydrolysis temperature. The optimized conditions for reducing sugar yield, as high as 2.140 g/L, corresponded to <50 g/L substrate loading, 0.522 M NaOH, 60 minutes of hydrolysis time and 80oC hydrolysis temperature. The possible ethanol content of 1.094 g/L was also expected under optimized conditions, demonstrating great potential in second-generation bioethanol production. Second-generation bioethanol production from a non-edible feedstock (durian seeds) is optimized by varying key parameters in the alkaline hydrolysis process, showing high yields of fermentable sugars.

ACS Style

Theofany Harley Chriswardana; Yheni Mulyaningsih; Yhana Mulyaningsih; Aditiya Harjon Bahar; Teuku Meurah Indra Riayatsyah. Optimization of sugar production from Durian seeds via alkaline hydrolysis for second-generation bioethanol production. Clean Energy 2021, 5, 375 -386.

AMA Style

Theofany Harley Chriswardana, Yheni Mulyaningsih, Yhana Mulyaningsih, Aditiya Harjon Bahar, Teuku Meurah Indra Riayatsyah. Optimization of sugar production from Durian seeds via alkaline hydrolysis for second-generation bioethanol production. Clean Energy. 2021; 5 (2):375-386.

Chicago/Turabian Style

Theofany Harley Chriswardana; Yheni Mulyaningsih; Yhana Mulyaningsih; Aditiya Harjon Bahar; Teuku Meurah Indra Riayatsyah. 2021. "Optimization of sugar production from Durian seeds via alkaline hydrolysis for second-generation bioethanol production." Clean Energy 5, no. 2: 375-386.

Journal article
Published: 18 March 2021 in Sustainability
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The limitation of fossil fuel sources and negative environmental impact persuade scientists around the world to find a solution. One possible solution is by using renewable fuel to replace fossil fuel with an inexpensive, fast, and effective production process. The objective of this study is to investigate the biodiesel production from crude Reutealis trisperma oil using the conventional and the ultrasonic bath stirrer method through the esterification and transesterification process. The result shows that the most effective reaction time with an optimum condition for the esterification and transesterification of Reutealis trisperma oil is at 2 h 30 min by using the ultrasonic bath stirrer method. The optimum conditions at a temperature of 55 °C for the esterification and at 60 °C for transesterification with 2% (v/v) of sulphuric acid with catalyst concentration of 0.5 wt.% were a methanol-to-oil ratio of 60%, and agitation speed of 1000 rpm. This optimum condition gives the highest yield of 95.29% for the Reutealis trisperma biodiesel. The results showed that the ultrasonic bath stirrer method had more effect on the reaction time needed than using the conventional method and reduced half of the conventional method reaction time. Finally, the properties of Reutealis trisperma biodiesel fulfilled the ASTM D6751 and EN 14214 biodiesel standards with density, 892 kg/m3; pour point, −2 °C; cloud point, −1 °C; flash point, 206.5 °C; calorific value, 40.098 MJ/kg; and acid value, 0.26 mg KOH/g.

ACS Style

Teuku Riayatsyah; Razali Thaib; Arridina Silitonga; Jassinnee Milano; Abd. Shamsuddin; Abdi Sebayang; Rahmawaty; Joko Sutrisno; Teuku Mahlia. Biodiesel Production from Reutealis trisperma Oil Using Conventional and Ultrasonication through Esterification and Transesterification. Sustainability 2021, 13, 3350 .

AMA Style

Teuku Riayatsyah, Razali Thaib, Arridina Silitonga, Jassinnee Milano, Abd. Shamsuddin, Abdi Sebayang, Rahmawaty, Joko Sutrisno, Teuku Mahlia. Biodiesel Production from Reutealis trisperma Oil Using Conventional and Ultrasonication through Esterification and Transesterification. Sustainability. 2021; 13 (6):3350.

Chicago/Turabian Style

Teuku Riayatsyah; Razali Thaib; Arridina Silitonga; Jassinnee Milano; Abd. Shamsuddin; Abdi Sebayang; Rahmawaty; Joko Sutrisno; Teuku Mahlia. 2021. "Biodiesel Production from Reutealis trisperma Oil Using Conventional and Ultrasonication through Esterification and Transesterification." Sustainability 13, no. 6: 3350.

Journal article
Published: 14 December 2020 in Energies
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Geothermal heat exchangers (GHEs) represent a buried pipe system, which can be utilised to harness renewable thermal energy stored in the ground to improve the efficiency of heating and cooling systems. Two basic arrangements of GHEs have been widely used: vertical and horizontal. Vertical GHEs generally have a better performance in comparison with the horizontal arrangement, and these systems are particularly suitable for confined spaces. Nevertheless, the main technical challenge associated with GHEs, for either the vertical or the horizontal arrangement, is the performance deterioration associated with an increase in the operation times during summer or winter seasons. In this paper, a combined horizontal-vertical GHE arrangement is proposed to address the current challenges. The combined GHE arrangement can be operated in five different modes, corresponding to different thermal loading conditions. These five operation modes of the combined GHE are analysed based on the transient finite difference models previously developed for the horizontal and vertical arrangements. The simulation results reveal that for the single operation mode (horizontal or vertical only), the vertical GHE performs better than the horizontal GHE due to relatively stable ground temperature deep down. While, for the combined operation mode, the series operations (horizontal to vertical or vertical to horizontal) of the GHE are superior to the split mode. It is found that the effect of the fluid mass flow rate ratio is trivial on the heat dissipation of the split mode GHE. The highest heat transfer rate in the split flow operational mode is rendered by the ratio of the mass flow rate of 40% horizontal and 60% vertical. In addition, the climate condition has more effect on GHE’s performance and the increase of the fluid flow rate it can enhance the amount of energy released by the GHE.

ACS Style

Sarwo Edhy Sofyan; Eric Hu; Andrei Kotousov; Teuku Meurah Indra Riayatsyah; Razali Thaib. Mathematical Modelling and Operational Analysis of Combined Vertical–Horizontal Heat Exchanger for Shallow Geothermal Energy Application in Cooling Mode. Energies 2020, 13, 6598 .

AMA Style

Sarwo Edhy Sofyan, Eric Hu, Andrei Kotousov, Teuku Meurah Indra Riayatsyah, Razali Thaib. Mathematical Modelling and Operational Analysis of Combined Vertical–Horizontal Heat Exchanger for Shallow Geothermal Energy Application in Cooling Mode. Energies. 2020; 13 (24):6598.

Chicago/Turabian Style

Sarwo Edhy Sofyan; Eric Hu; Andrei Kotousov; Teuku Meurah Indra Riayatsyah; Razali Thaib. 2020. "Mathematical Modelling and Operational Analysis of Combined Vertical–Horizontal Heat Exchanger for Shallow Geothermal Energy Application in Cooling Mode." Energies 13, no. 24: 6598.

Short communication
Published: 04 November 2020 in Case Studies in Thermal Engineering
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A borehole heat exchanger (BHE) could be used in heating and cooling systems as the ground temperature is normally higher than the average air temperature in winter and lower in summer. This difference in the temperature can be used to improve the efficiency of air conditioning systems (in summer) and heat pumps (in winter). The performance of a BHE is influenced by soil temperature that may have significant seasonal changes. These changes were largely ignored in previous BHE modelling approaches being a source for large errors in theoretical predictions. This paper presents a new internal source term approach to account for the (seasonal) fluctuation in soil temperature on a shallow BHE’s performance. The proposed model is able to consider the heat flow in multi-ground-layers. The governing equations of the model are solved by using explicit finite different method. The model is validated using experimental data. Afterward, the simulated soil temperatures with and without the internal heat source term showed that the maximum relative errors are 3.7% and 14% respectively. The use of high thermal conductivity grout resulted in a decrease in the borehole thermal resistance. The outlet fluid temperature under the continuous operation mode is higher than that operated under the intermittent mode.

ACS Style

Sarwo Edhy Sofyan; Eric Hu; Andrei Kotousov; Teuku Meurah Indra Riayatsyah; Khairil; Hamdani. A new approach to modelling of seasonal soil temperature fluctuations and their impact on the performance of a shallow borehole heat exchanger. Case Studies in Thermal Engineering 2020, 22, 100781 .

AMA Style

Sarwo Edhy Sofyan, Eric Hu, Andrei Kotousov, Teuku Meurah Indra Riayatsyah, Khairil, Hamdani. A new approach to modelling of seasonal soil temperature fluctuations and their impact on the performance of a shallow borehole heat exchanger. Case Studies in Thermal Engineering. 2020; 22 ():100781.

Chicago/Turabian Style

Sarwo Edhy Sofyan; Eric Hu; Andrei Kotousov; Teuku Meurah Indra Riayatsyah; Khairil; Hamdani. 2020. "A new approach to modelling of seasonal soil temperature fluctuations and their impact on the performance of a shallow borehole heat exchanger." Case Studies in Thermal Engineering 22, no. : 100781.

Journal article
Published: 14 August 2020 in Energies
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Pyrolyzed waste plastic-based green fuel has been reported to be used as an alternate fuel for diesel engines. Some of the main challenges for implementing this in current automotive technology include evaluating engine performance, emission, noise vibration harshness (NVH), and knock characteristics of this fuel. This study focuses on the engine performance of poly-ethylene terephthalate (PET)-based waste plastic oil (WPO) at varying engine speed conditions. The pyrolysis of mixed-waste plastic was carried out at 300 °C in a fixed-bed reactor. Physicochemical properties such as viscosity, density, calorific value, sulfur, and research octane number (RON) of the plastic fuel and its blends with gasoline were analyzed using ASTM standard test methods. The WPO was blended with two different types of gasoline (RON88 and RON90) at 10, 20, and 30%, and was tested in a spark-ignition (SI) engine. The experimental results showed that different WPO–gasoline blends can be used in an SI engine without any engine modifications, and the performance indicators for different blends were found to be close to that of pure gasoline. The brake power and brake specific fuel consumption (BSFC) were found to be 4.1 kW and 0.309 kg/kW h, respectively. The 10% WPO and 90% RON90 blend produced optimal engine performance at 3500 rpm.

ACS Style

Khairil; Teuku Meurah Indra Riayatsyah; Samsul Bahri; Sarwo Edhy Sofyan; Jalaluddin Jalaluddin; Fitranto Kusumo; Arridina Susan Silitonga; Yanti Padli; Muhammad Jihad; Abd Halim Shamsuddin. Experimental Study on the Performance of an SI Engine Fueled by Waste Plastic Pyrolysis Oil–Gasoline Blends. Energies 2020, 13, 4196 .

AMA Style

Khairil, Teuku Meurah Indra Riayatsyah, Samsul Bahri, Sarwo Edhy Sofyan, Jalaluddin Jalaluddin, Fitranto Kusumo, Arridina Susan Silitonga, Yanti Padli, Muhammad Jihad, Abd Halim Shamsuddin. Experimental Study on the Performance of an SI Engine Fueled by Waste Plastic Pyrolysis Oil–Gasoline Blends. Energies. 2020; 13 (16):4196.

Chicago/Turabian Style

Khairil; Teuku Meurah Indra Riayatsyah; Samsul Bahri; Sarwo Edhy Sofyan; Jalaluddin Jalaluddin; Fitranto Kusumo; Arridina Susan Silitonga; Yanti Padli; Muhammad Jihad; Abd Halim Shamsuddin. 2020. "Experimental Study on the Performance of an SI Engine Fueled by Waste Plastic Pyrolysis Oil–Gasoline Blends." Energies 13, no. 16: 4196.

Conference paper
Published: 18 July 2020 in IOP Conference Series: Earth and Environmental Science
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ACS Style

Khairil; Rajuwardi Kumar; Teuku Meurah Indra Riayatsyah; Jalaluddin; Sarwo Edhy Sofyan. The Potential Plastic Oil Production from Plastics Waste (PET and LDPE) in Aceh, Indonesia. IOP Conference Series: Earth and Environmental Science 2020, 505, 1 .

AMA Style

Khairil, Rajuwardi Kumar, Teuku Meurah Indra Riayatsyah, Jalaluddin, Sarwo Edhy Sofyan. The Potential Plastic Oil Production from Plastics Waste (PET and LDPE) in Aceh, Indonesia. IOP Conference Series: Earth and Environmental Science. 2020; 505 ():1.

Chicago/Turabian Style

Khairil; Rajuwardi Kumar; Teuku Meurah Indra Riayatsyah; Jalaluddin; Sarwo Edhy Sofyan. 2020. "The Potential Plastic Oil Production from Plastics Waste (PET and LDPE) in Aceh, Indonesia." IOP Conference Series: Earth and Environmental Science 505, no. : 1.

Journal article
Published: 19 September 2019 in Processes
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Processing biodiesel from non-edible sources of feedstock seems to be thriving in recent years. It also has also gathered more attention than in the past, mainly because the biodiesel product is renewable and emits lower pollution compared to fossil fuels. Researchers have started their work on various kinds of biodiesel product, especially from a non-edible feedstock. Non-edible feedstocks such as Ceiba pentandra show great potential in the production of biodiesel, especially in the Southeast Asia region because the plants seem to be abundant in that region. Ceiba pentandra, also known as the Kapok tree, produces hundreds of pods with a length of 15 cm (5.9 in) and diameter 2–5 cm (1–2 in). The pods consist of seeds and fluff in the surrounding areas inside the pod, which itself contains yellowish fibre, a mixture of cellulose and lignin. The seeds of Ceiba pentandra can be used as feedstock for biodiesel production. The study for Ceiba pentandra will involve techno-economic, as well as a sensitivity analysis. Moreover, the study also shows that the techno-economic analysis of a biodiesel processing plant for 50 ktons Ceiba pentandra with a life span of 20 years is around $701 million with 3.7 years of the payback period. Besides that, this study also shows the differences in operating cost and oil conversion yield, which has the least impact on running cost. By improving the conversion processes continuously and by increasing the operational efficiency, the cost of production will decrease. In addition, the study also explains the differences of final price biodiesel and diesel fossil fuel, both showing dissimilar scenarios subsidy and taxation. Biodiesel has a subsidy of $0.10/L and $0.18/L with a total tax exemption of 15%. The value was obtained from the latest subsidy cost and diesel in Malaysia. Finally, further research is needed in order to fully utilize the use of Ceiba pentandra as one of the non-edible sources of biodiesel.

ACS Style

N.A.M. Jamaluddin; T.M.I. Riayatsyah; Arridina Susan Silitonga; M. Mofijur; Abd Halim Shamsuddin; Hwai Chyuan Ong; T M Indra Mahlia; S M Ashrafur Rahman. Techno-Economic Analysis and Physicochemical Properties of Ceiba pentandra as Second-Generation Biodiesel Based on ASTM D6751 and EN 14214. Processes 2019, 7, 636 .

AMA Style

N.A.M. Jamaluddin, T.M.I. Riayatsyah, Arridina Susan Silitonga, M. Mofijur, Abd Halim Shamsuddin, Hwai Chyuan Ong, T M Indra Mahlia, S M Ashrafur Rahman. Techno-Economic Analysis and Physicochemical Properties of Ceiba pentandra as Second-Generation Biodiesel Based on ASTM D6751 and EN 14214. Processes. 2019; 7 (9):636.

Chicago/Turabian Style

N.A.M. Jamaluddin; T.M.I. Riayatsyah; Arridina Susan Silitonga; M. Mofijur; Abd Halim Shamsuddin; Hwai Chyuan Ong; T M Indra Mahlia; S M Ashrafur Rahman. 2019. "Techno-Economic Analysis and Physicochemical Properties of Ceiba pentandra as Second-Generation Biodiesel Based on ASTM D6751 and EN 14214." Processes 7, no. 9: 636.

Original paper
Published: 13 December 2017 in Clean Technologies and Environmental Policy
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Some methods of generating power such as power generation through coal, natural gas, oil result in inevitable emissions of greenhouse gases. While power generation is necessary due to its increasing demand, it is important for power companies to generate their power in an efficient manner to reduce its effect on the environment. One of the most effective ways of tackling inefficiency issues is through the implementation of efficiency standard. While there exist a lot of studies addressing the topic of energy efficiency standards, there are very few papers that deal specifically with efficiency standard for power generation plant. This paper presents methodology for the implementation of power plant efficiency standard; as mandatory or voluntary regulatory instrument, that may be implemented by the government to control greenhouse emissions from power plants. It is hoped that through its implementation, power companies shall become more conscious of their efficiency and emission quality, hereby encouraging the adoption of more efficient energy sources and latest available technologies. In this paper, methods of calculating greenhouse intensity value and its corresponding allowable ranges have been demonstrated. Case study on a 10-year-old base-load multi-fuel-fired power plant in Malaysia has shown that the power plant is in conformance to the power plant efficiency standard, with an actual greenhouse intensity of 859.4461 kgCO2/MWh sent-out, well within the allowable range of greenhouse intensities for that power plant which is between 760 and 890 kgCO2/MWh sent-out. It has also been demonstrated that older power plants are allowed to have higher values of greenhouse intensity. Benefits of utilising natural gas and operating the power plant at full load have also been shown.

ACS Style

T. M. I. Mahlia; J. Y. Lim; Lisa Aditya; T.M.I. Riayatsyah; A. E. Pg Abas. Methodology for implementing power plant efficiency standards for power generation: potential emission reduction. Clean Technologies and Environmental Policy 2017, 20, 309 -327.

AMA Style

T. M. I. Mahlia, J. Y. Lim, Lisa Aditya, T.M.I. Riayatsyah, A. E. Pg Abas. Methodology for implementing power plant efficiency standards for power generation: potential emission reduction. Clean Technologies and Environmental Policy. 2017; 20 (2):309-327.

Chicago/Turabian Style

T. M. I. Mahlia; J. Y. Lim; Lisa Aditya; T.M.I. Riayatsyah; A. E. Pg Abas. 2017. "Methodology for implementing power plant efficiency standards for power generation: potential emission reduction." Clean Technologies and Environmental Policy 20, no. 2: 309-327.

Original articles
Published: 18 October 2017 in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects
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In this study, three types of biodiesel production methods are compared in order to maximize Reutealis trisperma biodiesel yields and it is found that the best method is esterification-neutralization-transesterification. The optimum methanol to oil molar ratio, catalyst concentration, reaction temperature, and reaction time are also determined from laboratory experiments and modeling using response surface methodology. There is excellent agreement between the predicted and experimental Reutealis trisperma biodiesel yields under optimum process conditions, with a value of 99.23 and 98.72%, respectively. The physicochemical properties of the Reutealis trisperma biodiesel also fulfill the fuel specifications of the ASTM D6751 standard.

ACS Style

A.S Silitonga; T.M.I Mahlia; Hwai Chyuan Ong; T.M.I. Riayatsyah; F Kusumo; Husin Ibrahim; S Dharma; D Gumilang. A comparative study of biodiesel production methods for Reutealis trisperma biodiesel. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 2017, 39, 2006 -2014.

AMA Style

A.S Silitonga, T.M.I Mahlia, Hwai Chyuan Ong, T.M.I. Riayatsyah, F Kusumo, Husin Ibrahim, S Dharma, D Gumilang. A comparative study of biodiesel production methods for Reutealis trisperma biodiesel. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects. 2017; 39 (20):2006-2014.

Chicago/Turabian Style

A.S Silitonga; T.M.I Mahlia; Hwai Chyuan Ong; T.M.I. Riayatsyah; F Kusumo; Husin Ibrahim; S Dharma; D Gumilang. 2017. "A comparative study of biodiesel production methods for Reutealis trisperma biodiesel." Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 39, no. 20: 2006-2014.

Journal article
Published: 29 June 2017 in Energies
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The use of non-edible, second-generation feedstocks for the production of biodiesel has been an active area of research, due to its potential in replacing fossil diesel as well as its environmentally friendly qualities. Despite this, more needs to be done to remove the technical barriers associated with biodiesel production and usage, to increase its quality as well as to widen the choice of available feedstocks; so as to avoid over-dependence on limited sources. This paper assesses the feasibility of using a local plant, Reutealis trisperma, whose seeds contain a high percentage of oil of up to 51%, as one of the possible feedstocks. The techno-economic and sensitivity analysis of biodiesel production from Reutealis trisperma oil as well as implementation aspects and environmental effects of the biodiesel plant are discussed. Analysis indicates that the 50 kt Reutealis trisperma biodiesel production plant has a life cycle cost of approximately $710 million, yielding a payback period of 4.34 years. The unit cost of the biodiesel is calculated to be $0.69/L with the feedstock cost accounting for the bulk of the cost. The most important finding from this study is that the biodiesel from Reutealis trisperma oil can compete with fossil diesel, provided that appropriate policies of tax exemptions and subsidies can be put in place. To conclude, further studies on biodiesel production and its limitations are necessary before the use of biodiesel from Reutealis trisperma oil may be used as a fuel source to replace fossil diesel.

ACS Style

T.M.I. Riayatsyah; Hwai Chyuan Ong; Wen Tong Chong; Lisa Aditya; Heri Hermansyah; Teuku Meurah Indra Mahlia. Life Cycle Cost and Sensitivity Analysis of Reutealis trisperma as Non-Edible Feedstock for Future Biodiesel Production. Energies 2017, 10, 877 .

AMA Style

T.M.I. Riayatsyah, Hwai Chyuan Ong, Wen Tong Chong, Lisa Aditya, Heri Hermansyah, Teuku Meurah Indra Mahlia. Life Cycle Cost and Sensitivity Analysis of Reutealis trisperma as Non-Edible Feedstock for Future Biodiesel Production. Energies. 2017; 10 (7):877.

Chicago/Turabian Style

T.M.I. Riayatsyah; Hwai Chyuan Ong; Wen Tong Chong; Lisa Aditya; Heri Hermansyah; Teuku Meurah Indra Mahlia. 2017. "Life Cycle Cost and Sensitivity Analysis of Reutealis trisperma as Non-Edible Feedstock for Future Biodiesel Production." Energies 10, no. 7: 877.

Conference paper
Published: 01 March 2016 in IOP Conference Series: Earth and Environmental Science
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Lignocellulosic biomass is one of the promising feedstocks for bioethanol production. The process starts from pre-treatment, hydrolysis, fermentation, distillation and finally obtaining the final product, ethanol. The efficiency of enzymatic hydrolysis of cellulosic biomass depends heavily on the effectiveness of the pre-treatment step which main function is to break the lignin structure of the biomass. This work aims to investigate the effects of dilute acid pre-treatment on the enzymatic hydrolysis of durian seeds waste to glucose and the subsequent bioethanol fermentation process. The yield of glucose from dilute acid pre-treated sample using 0.6% H2SO4 and 5% substrate concentration shows significant value of 23.4951 g/L. Combination of dilute acid pre-treatment and enzymatic hydrolysis using 150U of enzyme able to yield 50.0944 g/L of glucose content higher compared to normal pre-treated sample of 8.1093 g/L. Dilute acid pre-treatment sample also shows stable and efficient yeast activity during fermentation process with lowest glucose content at 2.9636 g/L compared to 14.7583g/L for normal pre-treated sample. Based on the result, it can be concluded that dilute acid pre-treatment increase the yield of ethanol from bioethanol production process.

ACS Style

K A Ghazali; S F Salleh; T.M.I. Riayatsyah; H B Aditiya; T M I Mahlia. The effect of dilute acid pre-treatment process in bioethanol production from durian (Durio zibethinus) seeds waste. IOP Conference Series: Earth and Environmental Science 2016, 32, 12058 .

AMA Style

K A Ghazali, S F Salleh, T.M.I. Riayatsyah, H B Aditiya, T M I Mahlia. The effect of dilute acid pre-treatment process in bioethanol production from durian (Durio zibethinus) seeds waste. IOP Conference Series: Earth and Environmental Science. 2016; 32 ():12058.

Chicago/Turabian Style

K A Ghazali; S F Salleh; T.M.I. Riayatsyah; H B Aditiya; T M I Mahlia. 2016. "The effect of dilute acid pre-treatment process in bioethanol production from durian (Durio zibethinus) seeds waste." IOP Conference Series: Earth and Environmental Science 32, no. : 12058.

Conference paper
Published: 01 March 2016 in IOP Conference Series: Earth and Environmental Science
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Renewable energy is the latest approach of the Malaysian government in an effort to find sustainable alternative energy sources and to fulfill the ever increasing energy demand. Being a country that thrives in the service and agricultural sector, bioethanol production from lignocellulosic biomass presents itself as a promising option. However, the lack of technical practicality and complexity in the operation system hinder it from being economically viable. Hence, this research acquired multiple case studies in order to provide an insight on the process involved and its implication on production as well as to obtain a cost analysis of bioethanol production. The energy input and cost of three main components of the bioethanol production which are the collection, logistics, and pretreatment of rice straw were evaluated extensively. The theoretical bioethanol yield and conversion efficiency obtained were 250 L/t and 60% respectively. The findings concluded that bioethanol production from rice straw is currently not economically feasible in Malaysia's market due to lack of efficiency in the pretreatment phase and overbearing logistics and pretreatment costs. This work could serve as a reference to future studies of biofuel commercialization in Malaysia.

ACS Style

M H M Hidayata; S F Salleh; T.M.I. Riayatsyah; H B Aditiyac; T M I Mahliaa; A H Shamsuddina. Techno-economic analysis of bioethanol production from rice straw by liquid-state fermentation. IOP Conference Series: Earth and Environmental Science 2016, 32, 12048 .

AMA Style

M H M Hidayata, S F Salleh, T.M.I. Riayatsyah, H B Aditiyac, T M I Mahliaa, A H Shamsuddina. Techno-economic analysis of bioethanol production from rice straw by liquid-state fermentation. IOP Conference Series: Earth and Environmental Science. 2016; 32 ():12048.

Chicago/Turabian Style

M H M Hidayata; S F Salleh; T.M.I. Riayatsyah; H B Aditiyac; T M I Mahliaa; A H Shamsuddina. 2016. "Techno-economic analysis of bioethanol production from rice straw by liquid-state fermentation." IOP Conference Series: Earth and Environmental Science 32, no. : 12048.