International Journal of Chemical and Biochemical Sciences (ISSN 2226-9614)[/vc_column_text][/vc_column][/vc_row]
VOLUME 25(19) (2024)
Hydrothermal Synthesis of Well-Crystallized Boehmite from Lapindo Mud: Process Optimization
Didi Dwi Anggoro1*, Luqman Buchori1, Sudiyarmanto2, Wawan Rustyawan3, Rizka Shafira1, Brilliant Umara Le Monde1
1Department of Chemical Engineering Diponegoro University, Indonesia
2Research Center for Chemistry, BRIN, Tangerang, Indonesia
3Pertamina Research and Technology Innovation, Jakarta, Indonesia
Abstract
A well-crystallized form of boehmite was successfully synthesized from alumina derived from Lapindo Mud using hydrothermal methods. A comprehensive evaluation and analysis of the reaction temperature, reaction time, and pH of the hydrothermal system was carried out with the aim to determine the most suitable variables for optimization boehmite production. For the purpose of evaluating the model, analyzing the data, and optimizing the operating conditions, Central Composite Design (CCD) was employed alongside the statistical programs Statistica 6.0. The results indicated that the optimal conditions are a pH of 9.1, a reaction temperature of 191°C, and a reaction time of 20 hours and 12 minutes. A high yield of 98.49% has been achieved by synthesizing boehmite under optimum operating conditions, according to the results. The sample that had been synthesized under optimum operating conditions was employed for evaluating the results. Using X-Ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR), the average particle size, crystallinity index, and functional groups of the synthesized boehmite have been identified. The FTIR analysis showed that the functional groups present in the synthesized boehmite closely resemble those found in commercial boehmite. This similarity in functional groups indicates that the chemical composition and bonding characteristics of the synthesized boehmite are consistent with those of the commercially available product. The synthesized material’s excellent quality was highlighted by the XRD result, which is showed a high crystallinity index and a clearly defined average particle size. This synthesis process successfully synthesized boehmite with desirable properties using alumina from Lapindo Mud.
Keywords: Alumina,Boehmite, Hydrothermal, Optimization
Full length article – PDF *Corresponding Author, e-mail: anggorophd@gmail.com Doi # https://doi.org/10.62877/80-IJCBS-24-25-19-80