Pangkumhang, B., Phanthasri, J., Suwannatrai, S., Khamdahsag, P., Lin, C. and Tanboonchuy, V. 2019. Optimization of Lignin Removal from Synthesized Wastewater by Iron (III) Trimesate: DOI: 10.32526/ennrj.17.4.2019.26. Environment and Natural Resources Journal. 17, 4 (May 2019), 1–10.