relation: https://khub.utp.edu.my/scholars/5781/ title: Extraction and characterization of lignin from oil palm biomass via ionic liquid dissolution and non-toxic aluminium potassium sulfate dodecahydrate precipitation processes creator: Mohtar, S.S. creator: Tengku Malim Busu, T.N.Z. creator: Md Noor, A.M. creator: Shaari, N. creator: Yusoff, N.A. creator: Bustam Khalil, M.A. creator: Abdul Mutalib, M.I. creator: Mat, H.B. description: The objective of this study is to extract and characterize lignin from oil palm biomass (OPB) by dissolution in 1-butyl-3-methylimidazolium chloride (bmimCl), followed by the lignin extraction through the CO2 gas purging prior to addition of aluminum potassium sulfate dodecahydrate (AlK(SO4)2·12H2O). The lignin yield, YL (%wt.) was found to be dependent of the types of OPB observed for all precipitation methods used. The lignin recovery, RL (%wt.) obtained from CO2-AlK(SO4)2·12H2O precipitation was, however dependent on the types of OPB, which contradicted to that of the acidified H2SO4 and HCl solutions of pH 0.7 and 2 precipitations. Only about 54% of lignin was recovered from the OPB. The FTIR results indicate that the monodispersed lignin was successfully extracted from the OPT, OPF and OPEFB having a molecular weight (MW) of 1331, 1263 and 1473g/mol, and degradation temperature of 215, 207.5 and 272°C, respectively. © 2015 Elsevier Ltd. publisher: Elsevier Ltd date: 2015 type: Article type: PeerReviewed identifier: Mohtar, S.S. and Tengku Malim Busu, T.N.Z. and Md Noor, A.M. and Shaari, N. and Yusoff, N.A. and Bustam Khalil, M.A. and Abdul Mutalib, M.I. and Mat, H.B. (2015) Extraction and characterization of lignin from oil palm biomass via ionic liquid dissolution and non-toxic aluminium potassium sulfate dodecahydrate precipitation processes. Bioresource Technology, 192. pp. 212-218. ISSN 09608524 relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930221658&doi=10.1016%2fj.biortech.2015.05.029&partnerID=40&md5=2fa9e3e66a77e238796d6de118b1da99 relation: 10.1016/j.biortech.2015.05.029 identifier: 10.1016/j.biortech.2015.05.029