Optimization of E-Waste Sorting Process Using Deep Learning

Authors

  • Godfrey Perfectson Oise Department of Computer Science, University of Benin, Edo State, Nigeria
  • Susan Konyeha Department of Computer Science, University of Benin, Edo State, Nigeria

DOI:

https://doi.org/10.56778/rjslr.v3i2.503

Abstract

The exponential growth of electronic waste (e-waste) has created urgent environmental and health challenges, demanding advanced solutions for efficient sorting and recycling. This study presents a novel hybrid deep learning framework that integrates EfficientNet, MobileNet, and a Sequential Neural Network (SNN) to automate e-waste classification with high accuracy and speed. The model was trained and evaluated on a diverse dataset of 3,859 images spanning 12 e-waste categories, including batteries, printed circuit boards, and household electronics. Experimental results demonstrate exceptional performance, achieving 97.8% accuracy, 98.1% precision, 97.8% recall, and a 97.8% F1 score, surpassing traditional methods and single-model approaches. The system’s lightweight design (48 MB) enables real-time processing (0.12 seconds per image) on standard CPUs, ensuring scalability for industrial applications. By automating the sorting process, the framework reduces human exposure to hazardous materials, enhances material recovery efficiency, and supports sustainable waste management practices. Its modular architecture allows seamless integration into existing recycling workflows, making it a practical solution for facilities with limited resources. The study underscores the model’s potential to advance circular economy initiatives by improving resource reuse and minimizing environmental contamination. Future research will focus on real-time IoT deployment, federated learning for decentralized training, and expanding classification capabilities to include rare and unconventional e-waste items. This work contributes a scalable, cost-effective, and environmentally responsible solution to the global e-waste crisis. 

References

Alrayes, F. S., Asiri, M. M., Maashi, M. S., Nour, M. K., Rizwanullah, M., Osman, A. E., Drar, S., & Zamani, A. S. (2023). Waste classification using vision transformer based on a multilayer hybrid convolution neural network. Urban Climate, 49, 101483. https://doi.org/10.1016/j.uclim.2023.101483

Ba Alawi, A. E., Saeed, A. Y. A., Almashhor, F., Al-Shathely, R., & Hassan, A. N. (2021). Solid Waste Classification Using Deep Learning Techniques. 2021 International Congress of Advanced Technology and Engineering (ICOTEN), 1–5. https://doi.org/10.1109/ICOTEN52080.2021.9493430

Bircanoglu, C., Atay, M., Beser, F., Genc, O., & Kizrak, M. A. (2018). RecycleNet: Intelligent Waste Sorting Using Deep Neural Networks. 2018 Innovations in Intelligent Systems and Applications (INISTA), 1–7. https://doi.org/10.1109/INISTA.2018.8466276

Chen, Y., Luo, A., Cheng, M., Wu, Y., Zhu, J., Meng, Y., & Tan, W. (2023). Classification and recycling of recyclable garbage based on deep learning. Journal of Cleaner Production, 414, 137558. https://doi.org/10.1016/j.jclepro.2023.137558

Chhillar, I., & Singh, A. (2025). An improved soft voting-based machine learning technique to detect breast cancer utilizing effective feature selection and SMOTE-ENN class balancing. Discover Artificial Intelligence, 5(1), 4. https://doi.org/10.1007/s44163-025-00224-w

Chu, Y., Huang, C., Xie, X., Tan, B., Kamal, S., & Xiong, X. (2018). Multilayer Hybrid Deep-Learning Method for Waste Classification and Recycling. Computational Intelligence and Neuroscience, 2018, 1–9. https://doi.org/10.1155/2018/5060857

El Jaouhari, A., Samadhiya, A., Kumar, A., Mulat-weldemeskel, E., Luthra, S., & Kumar, R. (2025). Turning trash into treasure: Exploring the potential of AI in municipal waste management - An in-depth review and future prospects. Journal of Environmental Management, 373, 123658. https://doi.org/10.1016/j.jenvman.2024.123658

El-Sayad, N., & El-Shekheby, S. (2023). Sustainable Waste Management through the Lens of Artificial Intelligence: An In-Depth Review. Journal of Engineering Research, 7(5), 195–201. https://doi.org/10.21608/erjeng.2023.242796.1281

Evelyn Osagie. (2024, April 16). NGO calls for sustainable e-waste recycling. The Nation. https://thenationonlineng.net/ngo-calls-for-sustainable-e-waste-recycling/

Huynh, M.-H., Pham-Hoai, P.-T., Tran, A.-K., & Nguyen, T.-D. (2020). Automated Waste Sorting Using Convolutional Neural Network. 2020 7th NAFOSTED Conference on Information and Computer Science (NICS), 102–107. https://doi.org/10.1109/NICS51282.2020.9335897

Kaya, M., Ulutürk, S., Çeti̇N Kaya, Y., Altintaş, O., & Turan, B. (2023). Optimization of Several Deep CNN Models for Waste Classification. Sakarya University Journal of Computer and Information Sciences, 6(2), 91–104. https://doi.org/10.35377/saucis...1257100

Kunsen Lin, Youcai Zhao, Lina Wang, Wenjie Shi, Feifei Cui, & Tao Zhou. (2023). MSWNet: A visual deep machine learning method adopting transfer learning based upon ResNet 50 for municipal solid waste sorting. Frontiers of Environmental Science & Engineering, 17(77). https://doi.org/10.1007/s11783-023-1677-1

Lin, W. (2021). YOLO-Green: A Real-Time Classification and Object Detection Model Optimized for Waste Management. 2021 IEEE International Conference on Big Data (Big Data), 51–57. https://doi.org/10.1109/BigData52589.2021.9671821

Mishra, S., Yaduvanshi, R., Rajpoot, P., Verma, S., Pandey, A. K., & Pandey, D. (2024). An integrated deep-learning model for smart waste classification. Environmental Monitoring and Assessment, 196(3), 279. https://doi.org/10.1007/s10661-024-12410-x

Munir, M. T., Li, B., & Naqvi, M. (2023). Revolutionizing municipal solid waste management (MSWM) with machine learning as a clean resource: Opportunities, challenges and solutions. Fuel, 348, 128548. https://doi.org/10.1016/j.fuel.2023.128548

Oise, G., & Konyeha, S. (2024). E-WASTE MANAGEMENT THROUGH DEEP LEARNING: A SEQUENTIAL NEURAL NETWORK APPROACH. FUDMA JOURNAL OF SCIENCES, 8(3), 17–24. https://doi.org/10.33003/fjs-2024-0804-2579

Oise, G. P., & Konyeha, S. (2024). Deep Learning System for E-Waste Management. The 3rd International Electronic Conference on Processes, 66. https://doi.org/10.3390/engproc2024067066

Oise, G. P., & Susan, K. (2024). Deep Learning for Effective Electronic Waste Management and Environmental Health. https://doi.org/10.21203/rs.3.rs-4903136/v1

Oise Godfrey Perfectson. (2024). Environmental and Information Safety of End-of-Life Electronics. International Transactions on Electrical Engineering and Computer Science, 3(2), 86–91. https://doi.org/10.62760/iteecs.3.2.2024.91

Qin, L. W., Ahmad, M., Ali, I., Mumtaz, R., Zaidi, S. M. H., Alshamrani, S. S., Raza, M. A., & Tahir, M. (2021). Precision Measurement for Industry 4.0 Standards towards Solid Waste Classification through Enhanced Imaging Sensors and Deep Learning Model. Wireless Communications and Mobile Computing, 2021(1), 9963999. https://doi.org/10.1155/2021/9963999

Selvakanmani, S., Rajeswari, P., Krishna, B. V., & Manikandan, J. (2024). Optimizing E-waste management: Deep learning classifiers for effective planning. Journal of Cleaner Production, 443, 141021. https://doi.org/10.1016/j.jclepro.2024.141021

Sinthiya, N. J., Chowdhury, T. A., & Haque, A. K. M. B. (2022). Artificial Intelligence Based Smart Waste Management—A Systematic Review. In M. Lahby, A. Al-Fuqaha, & Y. Maleh (Eds.), Computational Intelligence Techniques for Green Smart Cities (pp. 67–92). Springer International Publishing. https://doi.org/10.1007/978-3-030-96429-0_3

Tsimnadis, K., & Kyriakopoulos, G. L. (2024). Investigating the Role of Municipal Waste Treatment within the European Union through a Novel Created Common Sustainability Point System. Recycling, 9(3), 42. https://doi.org/10.3390/recycling9030042

Yazdani, M., Kabirifar, K., & Haghani, M. (2024). Optimising post-disaster waste collection by a deep learning-enhanced differential evolution approach. Engineering Applications of Artificial Intelligence, 132, 107932. https://doi.org/10.1016/j.engappai.2024.107932

Zeng, X., Mathews, J. A., & Li, J. (2018). Urban Mining of E-Waste is Becoming More Cost-Effective Than Virgin Mining. Environmental Science & Technology, 52(8), 4835–4841. https://doi.org/10.1021/acs.est.7b04909

Zhang, Q., Yang, Q., Zhang, X., Bao, Q., Su, J., & Liu, X. (2021). Waste image classification based on transfer learning and convolutional neural network. Waste Management, 135, 150–157. https://doi.org/10.1016/j.wasman.2021.08.038

Zhang, Q., Zhang, X., Mu, X., Wang, Z., Tian, R., Wang, X., & Liu, X. (2021). Recyclable waste image recognition based on deep learning. Resources, Conservation and Recycling, 171, 105636. https://doi.org/10.1016/j.resconrec.2021.105636

Zocco, F., McLoone, S., & Smyth, B. (2022). Material measurement units for a circular economy: Foundations through a review. Sustainable Production and Consumption, 32, 833–850. https://doi.org/10.1016/j.spc.2022.05.022

Downloads

Published

2025-08-20

How to Cite

Oise, G. perfectson, & Konyeha, S. (2025). Optimization of E-Waste Sorting Process Using Deep Learning. RADINKA JOURNAL OF SCIENCE AND SYSTEMATIC LITERATURE REVIEW, 3(2), 612–622. https://doi.org/10.56778/rjslr.v3i2.503