Property integration for resource conservation network synthesis in palm oil mills

Cheng Liang Chen*, Jui-Yuan Lee, Denny Kok Sum Ng, Dominic Chwan Yee Foo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


This paper presents a mathematical model for resource conservation in a palm oil milling process via property integration. The focus is given to the clay bath system for kernel/shell separation based on flotation principle. In the present work, the clay bath separator is considered as a semi-continuous unit with a specific operating period. This is different from previous works where it is simplified as a continuous unit. The design problem can be formulated as a nonlinear program based on a superstructure approach, with the optimization objective that is set to minimize the fresh resource consumption or the operating cost. An illustrative example is solved to demonstrate the proposed model. The results indicate that more than 40% reduction in fresh resource consumption and more than 50% reduction in operating cost can be achieved through material recovery.

Original languageEnglish
Pages (from-to)207-215
Number of pages9
JournalChemical Engineering Journal
Issue number1-3
Publication statusPublished - 1 May 2011


  • Mathematical optimization
  • Process integration
  • Property integration
  • Resource conservation

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering
  • Environmental Chemistry


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