Journal Pre-proofs Original article Optimization strategies for improved biogas production by recycling of waste through response surface methodology and artificial neural network: Sustaina‐ ble Energy perspective research Lakshmi C. Gopal, Marimuthu Govindarajan, M.R. Kavipriya, Shahid Mahboob, Khalid A. Al-Ghanim, P. Virik, Zubair Ahmed, Norah Al- Mulahim, Venkatesh Senthilkumaran, Vijayalakshmi Shankar PII: S1018-3647(20)30355-4 DOI: https://doi.org/10.1016/j.jksus.2020.101241 Reference: JKSUS 101241 To appear in: Journal of King Saud University - Science Received Date: 13 October 2020 Revised Date: 3 November 2020 Accepted Date: 16 November 2020 Please cite this article as: L.C. Gopal, M. Govindarajan, M.R. Kavipriya, S. Mahboob, K.A. Al-Ghanim, P. Virik, Z. Ahmed, N. Al-Mulahim, V. Senthilkumaran, V. Shankar, Optimization strategies for improved biogas production by recycling of waste through response surface methodology and artificial neural network: Sustainable Energy perspective research, Journal of King Saud University - Science (2020), doi: https://doi.org/ 10.1016/j.jksus.2020.101241 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2020 The Author(s). Published by Elsevier B.V. on behalf of King Saud University.