Sitepu, E.C., Saragih, G., Tambunan, D.R.S. and Rianna, M. 2022. The structure and particle size of nanocarbon liquid particle from palm oil mill effluent using the hydrothermal method. Journal of Applied Research and Technology. 20, 2 (May 2022), 136–141. DOI:https://doi.org/10.22201/icat.24486736e.2022.20.2.1813.