Fuzzy optimisation for retrofitting a palm oil mill into a sustainable palm oil-based integrated biorefinery

Abstract In a typical palm oil processing plant, which is also known as palm oil mill, various types of palm based biomasses (e.g., empty fruit bunch (EFB), palm press fibre (PPF), palm kernel cake (PKC), palm kernel shell (PKS), sludge cake, etc.) are generated from the processing of fresh fruit bunches (FFBs) to produce crude palm oil (CPO) as the main product. At the initial stage, these biomasses are considered as low-value by products or waste. However, due to the maturity of palm biomass processing technologies and new initiatives given by Malaysian government, many of the palm oil mills have started to further process those biomasses into higher value products, such as biofuels, biochemicals, and bio-based food. This paper presents a novel application of the concept of systematic optimisation approach to retrofit a palm oil mill into a sustainable palm oil-based integrated biorefinery. In this work, the retrofit of an existing palm oil processing plant is analysed based on economic performance and the total potential environmental impact of the entire plant. In this context, the challenge lies in maximising the former whilst minimising the latter simultaneously. In the light of addressing this concern, fuzzy optimisation approach is adapted into this work to synthesise a sustainable palm oil-based integrated biorefinery which fulfils the two important objectives. Pareto optimum analysis is also performed to this new retrofit design case in order to determine the optimum pathway with the consideration of both objective functions. Sensitivity analysis is also conducted in this work to determine the effects of cost and price fluctuations on the economic performance. A palm oil mill case study is presented to collectively illustrate the proposed approach.

[1]  Taraneh Sowlati,et al.  Economic sensitivity of wood biomass utilization for greenhouse heating application , 2009 .

[2]  I. Fernández,et al.  Descriptive model and evaluation system to locate sustainable industrial areas , 2009 .

[3]  Wei Yuan,et al.  A Flexible Framework for Optimal Biorefinery Product Allocation , 2007 .

[4]  Subhash Bhatia,et al.  Potential of hydrogen from oil palm biomass as a source of renewable energy worldwide , 2007 .

[5]  Denny K. S. Ng,et al.  A hybrid optimisation model for the synthesis of sustainable gasification-based integrated biorefinery , 2012 .

[6]  Mahmoud M. El-Halwagi,et al.  A multi-criteria approach to screening alternatives for converting sewage sludge to biodiesel , 2010 .

[7]  Mahmoud M. El-Halwagi,et al.  Synthesis of an integrated biorefinery via the C–H–O ternary diagram , 2011 .

[8]  Raymond R. Tan,et al.  Synthesis of robust water reuse networks for single-component retrofit problems using symmetric fuzzy linear programming , 2004, Comput. Chem. Eng..

[9]  Ming-Lang Tseng,et al.  Evaluating firm's sustainable production indicators in uncertainty , 2009, Comput. Ind. Eng..

[10]  F. Rosillo-Calle,et al.  Brazilian alcohol: Food versus fuel? , 1987 .

[11]  Wolfgang Marquardt,et al.  Towards an integrated design of biofuels and their production pathways , 2010, Comput. Chem. Eng..

[12]  Wei Yuan,et al.  Optimal biorefinery product allocation by combining process and economic modeling , 2008 .

[13]  Raymond R. Tan,et al.  A fuzzy multiple-objective approach to the optimization of bioenergy system footprints , 2009 .

[14]  Mahmoud M. El-Halwagi,et al.  Automated targeting technique for concentration- and property-based total resource conservation network , 2010, Comput. Chem. Eng..

[15]  Laura A. Pellegrini,et al.  Economic analysis of a combined energy–methanol production plant , 2011 .

[16]  Mahmoud M. El-Halwagi,et al.  Design and analysis of biodiesel production from algae grown through carbon sequestration , 2010 .

[17]  Denny K. S. Ng,et al.  Multiple-cascade automated targeting for synthesis of a gasification-based integrated biorefinery. , 2012 .

[18]  Edgard Gnansounou,et al.  Techno-economic analysis of lignocellulosic ethanol: A review. , 2010, Bioresource technology.

[19]  Erzeng Xue,et al.  Water-gas shift conversion using a feed with a low steam to carbon monoxide ratio and containing sulphur , 1996 .

[20]  Amit Kumar,et al.  Large-scale biohydrogen production from bio-oil. , 2010, Bioresource technology.

[21]  M. Ramachandran,et al.  Application of multi-criteria decision making to sustainable energy planning--A review , 2004 .

[22]  H. Zimmermann.  Fuzzy programming and linear programming with several objective functions , 1978 .

[23]  Raymond R. Tan,et al.  Using fuzzy numbers to propagate uncertainty in matrix-based LCI , 2008 .

[24]  M. V. Pilipovik,et al.  Optimization of the pyrolysis of ethane using fuzzy programming , 2007 .

[25]  Mahmoud M. El-Halwagi,et al.  Optimal scheduling and operation of biodiesel plants with multiple feedstocks , 2009 .

[26]  S. Mekhilef,et al.  A review on biomass as a fuel for boilers , 2011 .

[27]  Feng-Sheng Wang,et al.  Optimal trade-off design of integrated fermentation processes for ethanol production using genetically engineered yeast , 2010 .

[28]  Xiaoyun Qin,et al.  Switchgrass as an alternate feedstock for power generation: an integrated environmental, energy and economic life-cycle assessment , 2006 .

[29]  Raymond R. Tan,et al.  A fuzzy linear programming extension of the general matrix-based life cycle model , 2008 .

[30]  Anthony V. Bridgwater,et al.  Renewable fuels and chemicals by thermal processing of biomass , 2003 .

[31]  Feng-Sheng Wang,et al.  Computer-aided biocompatible solvent design for an integrated extractive fermentation–separation process , 2010 .

[32]  Norman Sammons.  A Framework For Optimal Polygeneration Product Allocation , 2009 .

[33]  Ming-Lang Tseng,et al.  Application of fuzzy DEMATEL to develop a cause and effect model of municipal solid waste management in Metro Manila , 2009, Environmental monitoring and assessment.

[34]  Wieslaw Kubiak,et al.  Proportional Optimization And Fairness , 2008 .

[35]  Keat Teong Lee,et al.  Life cycle assessment of palm biodiesel: Revealing facts and benefits for sustainability , 2009 .

[36]  Umberto Arena,et al.  A techno-economic comparison between two design configurations for a small scale, biomass-to-energy gasification based system , 2010 .

[37]  Denny K. S. Ng,et al.  Automated Targeting Technique for Single-Impurity Resource Conservation Networks. Part 2: Single-Pass and Partitioning Waste-Interception Systems , 2009 .

[38]  Robert C. Brown,et al.  Comparative economics of biorefineries based on the biochemical and thermochemical platforms , 2007 .

[39]  Mahmoud M. El-Halwagi,et al.  Process synthesis and optimization of biorefinery configurations , 2012 .

[40]  A. Jiménez,et al.  Economic assessment of biomass feedstocks for the chemical industry , 1988 .

[41]  M. Fatih Demirbas,et al.  Biorefineries for biofuel upgrading: A critical review , 2009 .

[42]  P. E. Poh,et al.  Biomethanation of Palm Oil Mill Effluent (POME) with a thermophilic mixed culture cultivated using POME as a substrate , 2010 .

[43]  Wennan Zhang,et al.  Techno-economic evaluation of thermo-chemical biomass-to-ethanol , 2011 .

[44]  S. Bhatia,et al.  Water recycling from palm oil mill effluent (POME) using membrane technology , 2003 .

[45]  Denny K. S. Ng,et al.  Fuzzy Optimization Approach for the Synthesis of a Sustainable Integrated Biorefinery , 2011 .

[46]  Anthony S.F. Chiu,et al.  Using FANP approach on selection of competitive priorities based on cleaner production implementation: a case study in PCB manufacturer, Taiwan , 2008 .

[47]  Denny K. S. Ng,et al.  Automated targeting for conventional and bilateral property-based resource conservation network , 2009 .

[48]  J. M. Marchetti,et al.  The effect of economic variables over a biodiesel production plant , 2011 .

[49]  T. Seager,et al.  Comparative Life Cycle Assessment of Lignocellulosic Ethanol Production: Biochemical Versus Thermochemical Conversion , 2010, Environmental management.

[50]  L. A. Zedeh.  Knowledge representation in fuzzy logic , 1989 .

[51]  A. Demirbas,et al.  Potential applications of renewable energy sources, biomass combustion problems in boiler power systems and combustion related environmental issues , 2005 .

[52]  Denny K. S. Ng,et al.  Crisp and Fuzzy Optimisation Approaches for Water Network Retrofit , 2007 .

[53]  Denny K. S. Ng,et al.  Robust optimization approach for synthesis of integrated biorefineries with supply and demand uncertainties , 2013 .

[54]  Ludolf Plass,et al.  Second generation biofuels , 2007 .

[55]  Shiqiu Gao,et al.  Biomass pyrolysis in a micro-fluidized bed reactor: Characterization and kinetics , 2011 .

[56]  Wolfgang Marquardt,et al.  Reaction network flux analysis: Optimization‐based evaluation of reaction pathways for biorenewables processing , 2012 .

[57]  Dominic C.Y. Foo,et al.  Fuzzy optimization of topologically constrained eco-industrial resource conservation networks with incomplete information , 2011 .

[58]  Liejin Guo,et al.  Thermodynamic modeling and analysis of biomass gasification for hydrogen production in supercritical water , 2007 .

[59]  Raymond R. Tan,et al.  Designing eco-industrial water exchange networks using fuzzy mathematical programming , 2010 .

[60]  W.A.K.G. Wan Azlina,et al.  Air gasification of empty fruit bunch for hydrogen-rich gas production in a fluidized-bed reactor , 2011 .

[61]  Enrico Drioli,et al.  An economic feasibility study for water gas shift membrane reactor , 2001 .

[62]  R. Tan.  Fuzzy Optimization Model for Source-Sink Water Network Synthesis with Parametric Uncertainties , 2011 .

[63]  Anthony S.F. Chiu,et al.  Fuzzy AHP-based study of cleaner production implementation in Taiwan PWB manufacturer , 2009 .

[64]  Ilya Gelfand,et al.  Energy efficiency of conventional, organic, and alternative cropping systems for food and fuel at a site in the U.S. Midwest. , 2010, Environmental science & technology.

[65]  Wei Yuan,et al.  A Systematic Approach to Determine Economic Potential and Environmental Impact of Biorefineries , 2009 .

[66]  Denny K. S. Ng,et al.  Automated targeting for the synthesis of an integrated biorefinery , 2010 .

[67]  Denny K. S. Ng,et al.  Crisp and fuzzy integer programming models for optimal carbon sequestration retrofit in the power sector , 2010 .

[68]  Richard Bellman,et al.  Decision-making in fuzzy environment , 2012 .

[69]  Mahmoud M. El-Halwagi,et al.  Conceptual Synthesis of Gasification-Based Biorefineries Using Thermodynamic Equilibrium Optimization Models , 2011 .

[70]  Aidong Yang,et al.  On the use of systems technologies and a systematic approach for the synthesis and the design of future biorefineries , 2010, Comput. Chem. Eng..

[71]  Jhuma Sadhukhan,et al.  Process integration and economic analysis of bio-oil platform for the production of methanol and combined heat and power , 2011 .

[72]  B. G. Yeoh,et al.  A Technical and Economic Analysis of Heat and Power Generation from Biomethanation of Palm Oil Mill Effluent , 2005 .

[73]  Mahmoud M. El-Halwagi,et al.  Process analysis and optimization of biodiesel production from soybean oil , 2009 .

[74]  Mahmoud M. El-Halwagi,et al.  An algebraic targeting approach for effective utilization of biomass in combined heat and power systems through process integration , 2006 .

[75]  Amelia Bilbao-Terol,et al.  Pareto-optimal solutions in fuzzy multi-objective linear programming , 2009, Fuzzy Sets Syst..

[76]  Mahmoud M. El-Halwagi,et al.  The effect of greenhouse gas policy on the design and scheduling of biodiesel plants with multiple feedstocks , 2010 .

[77]  R. Tan,et al.  Automated Targeting Technique for Single-Impurity Resource Conservation Networks. Part 1: Direct Reuse/Recycle , 2009 .