Cited by 88Algal biology and biofuel productionAquatic Ecosystems and Phytoplankton DynamicsNeural Networks and Applications

Artificial neural networks model for estimating growth of polyculture microalgae in an open raceway pond

Supriyanto, Noguchi, Ryozo, Ahamed, Tofael, Rani, Devitra Saka, Sakurai, Kai, Nasution, Muhammad Ansori, Wibawa, Dhani S., Demura, Mikihide +1 more·2019·Biosystems Engineering

Abstract

Microalgae have potential as biomass energy sources with higher photosynthetic efficiency compared to terrestrial plants. The use of polyculture systems such as native microalgae communities for microalgae cultivation has several advantages, as well as challenges due to indeterminate species composition and growth rate variation between species. This paper presents an artificial neural network (ANN) model to estimate the growth of polyculture microalgae in a semi-continuous open raceway pond (ORP). The model was comprised of a multilayer backpropagation neural network with eight input parameters, one hidden layer, and one output parameter. The model was developed using datasets collected from the cultivation of polyculture microalgae in Minamisoma City, Fukushima Prefecture, Japan. The input parameters are as follows: initial algal concentration, harvesting period (between two and three days after the growth have begun), hydraulic retention time, addition of sodium acetate, average solar radiation (μmole m−2 s−1), average temperature (oC), pH condition, and nitrate ion (NO3−) concentration. The output variable is the microalgae concentration observed during the cultivation period. The output is represented using a single neuron. The result of the study showed that the designed three-layer ANN achieved a high prediction accuracy (R2 = 0.93) for all combinations of inputs.

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Crossref · 10.1016/j.biosystemseng.2018.10.002

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Authors
Supriyanto, Noguchi, R., Ahamed, T., Rani, D. S., Sakurai, K., Nasution, M. A., Wibawa, D. S., Demura, M., & Watanabe, M. M.
Affiliations
University of Tsukuba (JP)
Corresponding author
Noguchi, Ryozo
Venue
Biosystems Engineering
Publisher
Elsevier BV
Published
2019-01
Volume
177
Pages
122-129
ISSN
1537-5110 (ISSN-L)
OpenAlex
W2896676120
Cited by
88
References
20
Citations by year
2026: 12 · 2025: 10 · 2024: 20 · 2023: 13 · 2022: 12 · 2021: 9 · 2020: 9 · 2019: 2 · 2018: 1
FWCI
1.21
Type
journal article
Language
en
Open access
closed
Locations
Biosystems Engineering (publishedVersion)
Funders
University of Tsukuba
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
  • Physical Sciences › Computer Science › Artificial Intelligence › Neural Networks and Applications
Keywords
artificial neural networks, raceway ponds, biomass energy, BP neural network, hydraulic retention time, solar radiation, nitrate content, harvest time, algal concentration

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