A two-stage optimization approach for the synthesis of an integrated pulp and paper biorefinery

S. H. Lee, Denny K.S. Ng, I. M.L. Chew

    Research output: Contribution to journalArticleResearchpeer-review

    1 Citation (Scopus)


    Pulp and paper mills (PPMs) generate large amount of wastewater with high chemical oxygen demand (COD) concentration. Recently, anaerobic digestion receives much attention for the treatment of PPM wastewater. Through anaerobic digestion treatment, biogas can be generated and converted to bioenergy via combined heat and power (CHP). However, there are limited studies on the systematic allocation of bioenergy from CHP to wastewater treatment (WWT) and PPM to form an integrated pulp and paper biorefinery (IPPB). Therefore, the current work explores the potential of energy integration in an IPPB through a two-stage optimization approach. In the first stage, an optimal cost effective WWT for the treatment of PPM wastewater is synthesized. Next, the generated biogas from WWT is converted into four different forms of bioenergy. The detail allocation of the generated bioenergy is then determined in the second stage optimization. A case study is solved to illustrate the proposed approach.

    Original languageEnglish
    Pages (from-to)820-823
    Number of pages4
    JournalEnergy Procedia
    Publication statusPublished - 2014
    EventInternational Conference on Applied Energy 2014 - Taipei, Taiwan
    Duration: 30 May 20142 Jun 2014
    Conference number: 6th
    https://www.sciencedirect.com/journal/energy-procedia/vol/61/suppl/c (Proceedings)


    • Anaerobic digestion
    • Combined heat and power
    • Pathway optimization
    • Pulp and paper
    • Wastewater treatment

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