IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v13y2020i7p1641-d340343.html
   My bibliography  Save this article

Reduction in Energy Requirement and CO 2 Emission for Microalgae Oil Production Using Wastewater

Author

Listed:
  • Riaru Ishizaki

    (Graduate School of Life and Environmental Sciences, University of Tsukuba, Ibaraki 305-8572, Japan)

  • Ryozo Noguchi

    (Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki 305-8572, Japan)

  • Agusta Samodra Putra

    (Graduate School of Life and Environmental Sciences, University of Tsukuba, Ibaraki 305-8572, Japan
    Research Center for Chemistry, Indonesian Institute of Sciences, Serpong 15314, Indonesia)

  • Sosaku Ichikawa

    (Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki 305-8572, Japan)

  • Tofael Ahamed

    (Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki 305-8572, Japan)

  • Makoto M Watanabe

    (Algae Biomass and Energy System R&D Center, University of Tsukuba, Ibaraki 305-8572, Japan)

Abstract

A comparative evaluation of energy requirement and CO 2 emission was performed for native polyculture microalgae oil production in a wastewater treatment plant (WWTP). The wastewater provided nutrients for algae growth. Datasets of microalgae oil production and their details were collected from the Minamisoma pilot plant. Environmental impact estimation from direct energy and material balance was analyzed using SimaPro ® v8.0.4. in two scenarios: existing and algal scenarios. In the existing scenario, CO 2 emission sources were from wastewater treatment, sludge treatment, and import of crude oil. In the algal scenario, CO 2 emission with microalgae production was considered using wastewater treatment, CO 2 absorption from growing algae, and hydrothermal liquefaction (HTL) for extraction, along with the exclusion of exhausted CO 2 emission for growing algae and use of discharged heat for HTL. In these two scenarios, 1 m 3 of wastewater was treated, and 2.17 MJ higher heating value (HHV) output was obtained. Consequently, 2.76 kg-CO 2 eq/m 3 -wastewater in the existing scenario and 1.59 kg-CO 2 eq/m 3 -wastewater in the algal scenario were calculated. In the HTL process, 21.5 MJ/m 3 -wastewater of the discharged heat energy was required in the algal scenario. Hence, the efficiency of the biocrude production system will surpass those of the WWTP and imported crude oil.

Suggested Citation

  • Riaru Ishizaki & Ryozo Noguchi & Agusta Samodra Putra & Sosaku Ichikawa & Tofael Ahamed & Makoto M Watanabe, 2020. "Reduction in Energy Requirement and CO 2 Emission for Microalgae Oil Production Using Wastewater," Energies, MDPI, vol. 13(7), pages 1-20, April.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:7:p:1641-:d:340343
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/13/7/1641/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/13/7/1641/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Nugroho Adi Sasongko & Ryozo Noguchi & Junko Ito & Mikihide Demura & Sosaku Ichikawa & Mitsutoshi Nakajima & Makoto M. Watanabe, 2018. "Engineering Study of a Pilot Scale Process Plant for Microalgae-Oil Production Utilizing Municipal Wastewater and Flue Gases: Fukushima Pilot Plant," Energies, MDPI, vol. 11(7), pages 1-24, June.
    2. Dhani S. Wibawa & Muhammad A. Nasution & Ryozo Noguchi & Tofael Ahamed & Mikihide Demura & Makoto M. Watanabe, 2018. "Microalgae Oil Production: A Downstream Approach to Energy Requirements for the Minamisoma Pilot Plant," Energies, MDPI, vol. 11(3), pages 1-16, February.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Kenichi Furuhashi & Fumio Hasegawa & Manabu Yamauchi & Yutaka Kaizu & Kenji Imou, 2020. "Improving the Energy Balance of Hydrocarbon Production Using an Inclined Solid–Liquid Separator with a Wedge-Wire Screen and Easy Hydrocarbon Recovery from Botryococcus braunii," Energies, MDPI, vol. 13(16), pages 1-14, August.
    2. Riaru Ishizaki & Agusta Samodra Putra & Sosaku Ichikawa & Tofael Ahamed & Makoto M. Watanabe & Ryozo Noguchi, 2020. "Microalgae Oil Production Using Wastewater in Japan—Introducing Operational Cost Function for Sustainable Management of WWTP," Energies, MDPI, vol. 13(20), pages 1-19, October.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Makoto M. Watanabe & Andreas Isdepsky, 2021. "Biocrude Oil Production by Integrating Microalgae Polyculture and Wastewater Treatment: Novel Proposal on the Use of Deep Water-Depth Polyculture of Mixotrophic Microalgae," Energies, MDPI, vol. 14(21), pages 1-29, October.
    2. Riaru Ishizaki & Agusta Samodra Putra & Sosaku Ichikawa & Tofael Ahamed & Makoto M. Watanabe & Ryozo Noguchi, 2020. "Microalgae Oil Production Using Wastewater in Japan—Introducing Operational Cost Function for Sustainable Management of WWTP," Energies, MDPI, vol. 13(20), pages 1-19, October.
    3. Dahai, He & Zhihong, Yin & Lin, Qin & Yuhong, Li & Lei, Tian & Jiang, Li & Liandong, Zhu, 2024. "The application of magical microalgae in carbon sequestration and emission reduction: Removal mechanisms and potential analysis," Renewable and Sustainable Energy Reviews, Elsevier, vol. 197(C).
    4. Catarina Viegas & Catarina Nobre & Ricardo Correia & Luísa Gouveia & Margarida Gonçalves, 2021. "Optimization of Biochar Production by Co-Torrefaction of Microalgae and Lignocellulosic Biomass Using Response Surface Methodology," Energies, MDPI, vol. 14(21), pages 1-23, November.
    5. Lenin C. Kandasamy & Marcos A. Neves & Mikihide Demura & Mitsutoshi Nakajima, 2021. "The Effects of Total Dissolved Carbon Dioxide on the Growth Rate, Biochemical Composition, and Biomass Productivity of Nonaxenic Microalgal Polyculture," Sustainability, MDPI, vol. 13(4), pages 1-10, February.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:13:y:2020:i:7:p:1641-:d:340343. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.