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All Journal Sains Tanah Progresiva : Jurnal Pemikiran dan Pendidikan Islam Farabi Jurnal Kompetitif Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) EKOMBIS REVIEW: Jurnal Ilmiah Ekonomi dan Bisnis IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Sriwijaya International Seminar on Energy-Environmental Science and Technology Science and Technology Indonesia SEIKO : Journal of Management & Business International Journal of Supply Chain Management MUHARRIK: JURNAL DAKWAH DAN SOSIAL Molekul: Jurnal Ilmiah Kimia Jurnal Bisnis Terapan Jurnal Ilmiah Manusia dan Kesehatan JURPIKAT (Jurnal Pengabdian Kepada Masyarakat) Jurnal Studi Islam Lintas Negara (Journal of Cross-Border Islamic Studies) SRIWIJAYA JOURNAL OF ENVIRONMENT Edu Learning : Journal of Education and Learning Jurnal Pengabdian Mandiri Jurnal Ilmu Manajemen Mulawarman (JIMM) Al Maqashidi : Jurnal Hukum Islam Nusantara Seminar Nasional Hasil Penelitian LP2M UNM Jurnal Ekonomi dan Bisnis Equivalent : Journal of Economic, Accounting and Management Konstanta : Jurnal Matematika dan Ilmu Pengelatuan Alam

Muhammad Said

Department of Chemical Engineering, University of Sriwijaya, Palembang

Author-ID : 323379

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Keggin type polyoxometalate H4[αSiW12O40].nH2O as intercalant for hydrotalcite Neza Rahayu Palapa; Muhammad Said
Science and Technology Indonesia Vol. 1 No. 1 (2016): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

The synthesis of hydrotalcite and polyoxometalate H4[αSiW12O40].nH2O with the ratio (2:1), (1:1), (1:2) and (1:3) has been done. The product of intercalation was characterized using FT-IR spectrophotometer, XRD, and TG-DTA. Polyoxometalate H4[αSiW12O40].nH2O intercalated layered double hydroxide was optimised to use as adsorbent Congo red dye. Characterization using FT-IR was not showing the optimal insertion process. The result using XRD characterization was showed successful of polyoxometalate H4[αSiW12O40].nH2O inserted layered double hydroxide with a ratio (1:1) which the basal spacing was expanded from 7,8 Ȧ to 9,81 Ȧ. Furthermore, the thermal analysis was performed using TG-DTA. The result show that the decomposition of polyoxometalate H4[αSiW12O40].nH2O intercalated hydrotalcite with ratio (1:1) was occured at 80oC to 400oC with a loss of OH in the layer at 150oC to 220oC, and then the decomposition of the compound polyoxometalate H4[αSiW12O40].nH2O at 350oC to 420oC. Keywords: Hydrotalcite, Layered Double Hydroxide, Polyoxometalate, Intercalation

Bentonite intercalated organometallic complex as adsorbent of procion red Lora Vitanesa; Radja Nardo Purba; Aldes Lesbani; Muhammad Said
Science and Technology Indonesia Vol. 2 No. 1 (2017): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Insertion of bentonite with organometallic compounds [Cr3O(OOCH)6(H2O)3 (NO3)]as adsorbent of procion red with comparison weight ratio of bentonite: organometallic compounds [Cr3O(OOCH)6(H2O)3 (NO3)] i.e.: (2.5:1), (1:1), (1:2) and (1:3) has been done. The results of insertion bentonite were characterized using FT-IR spectrophotometer, XRD, and XRF. Furthermore, the product of optimum insertion was used as an adsorbent of procion red. The spectrogram from FT-IR shows the process of insertion was not optimum for every weight ratio. Characterization using XRD showed the optimum insertion process ratio (1:2) and (1:3) was indicated the presence of diffraction appearing at 2θ region by a shift in the diffraction angles 5.00 and 39o from the original activated bentonite of 20.8o. Characterization using XRF analysis in the ratio (1:3) shows percentage of metal oxide Cr2O3 increase to 82.28%, so at the ratio of 1:3, the process insertion of organometallic compounds into the bentonite has stated success base on its highest percentage. The adsorption process of insertion bentonite organometallic compounds [Cr3O(OOCH)6(H2O)3 (NO3)] ratio (1: 3) shows the magnitude of the rate of adsorption (k) at 0.004 min-1, the adsorption capacity (b), the largest at a temperature of 70oC at 72.99 mol/g, the largest adsorption energy (ΔG) at a temperature of 60oC i.e. 17.05 kJ / mol, the largest enthalpy (ΔH) is 105720.8 kJ/mol, entropy (ΔS) 315 kJ/mol and pH 11 has the biggest value of procion red adsorped, i.e. 33.38 mg/L. Keywords: Bentonite, Organometallic compound [Cr3O(OOCH)6(H2O)3(NO3)].Adsorption, Procion Red

Adsorption of congo red using Mg/Al hydrotalcite Muhammad Said; Neza Rahayu Palapa
Science and Technology Indonesia Vol. 2 No. 1 (2017): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Polyoxometalate H4[α-SiW12O40].nH2O intercalated layered double hydroxide (1:1) was used as adsorbent colored-dye. Polyoxometalate H4[αSiW12O40].nH2O intercalated layered double hydroxide ratio (1:1) was applied as the adsorbent of Congo red-dye, and produce 51.38 (min-1) of the adsorption rate, for the largest of the adsorption capacity (b) 9.091 mol/g at 70°C, the largest adsorption energy 10.752 kJ/mol at 30°C. The value of the enthalpy (ΔH) and entropy (ΔS) decreased with increasing concentration of Congo red-dye. Effect adsorption of pH was show the optimal pH at 8 with the amount Congo red absorbed were 47.529 ppm. Keywords: Hydrotalcite, layered double hydroxide, polyoxometalate, intercalated, Congo red, adsorption

Pillarization of double layer hydroxides using H3[-PW12O40]nH2O: effect of pillarization time Muhammad Imron; Muhammad Said
Science and Technology Indonesia Vol. 2 No. 2 (2017): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

The pillarization of Mg/Al double layer hydroxides using polyoxometalate H3[α-PW12O40]·nH2O by comparing the pillarization time i.e. 3 hours, 6 hours, 9 hours, 12 hours, 24 hours, 36 hours and 48 hours has been done. The product of a pillarization was characterized using an FT-IR spectrophotometer and XRD analysis. The result characterization of FT-IR spectrophotometer does not show the optimum of pillarization each time condition. Characterization using XRD shows the optimum pillarization process at 36 hours by showing the existence of double layer hydroxides material at diffraction angle 11.69o deg, 18.30o deg and 34.71o deg. Diffraction in the 60o-63o deg indicates the existence of a pillarization double layer hydroxides. Keywords: Layered double hydroxides, pillarization, polyoxometalate H3[α-PW12O40]·nH2O.

Pillarization of layer double hydroxides (Mg/Al) with keggin type K4[α-SiW12O40]•nH2O and its application as adsorbent of procion red dye Intan Permata Sari; Muhammad Said; Aldes Lesbani
Science and Technology Indonesia Vol. 2 No. 3 (2017): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Pillarization of layered double hydroxides with polyoxometalate K4[α-SiW12O40]•nH2O at various times i.e. 3, 6, 9, 12, 24, 36 and 48 hours has been done. The pillared product was characterized by FT-IR spectrophotometer and XRD. The optimum pillared layered double hydroxides of polyoxometalate K4[α-SiW12O40]•nH2O was used as an adsorbent of procion red dye. The results of characterization using FT-IR spectrophotometer is not yet show the optimum pillarization process. The characterisation using XRD the successfully of pillared layered double hydroxides of polyoxometalate K4[α-SiW12O40]•nH2O showing the existence of diffraction angle 8.5o with intensity 355. Furthermore, the pillared layered double hydroxides of polyoxometalate K4[α-SiW12O40]•nH2O with time variation of 12 hours was applied as an adsorbent of procion red dye. The results show the adsorption rate was 0.523 min-1, the highest of absorption capacity at 70oC was 10.8 mol/g, the highest energy of absorption 70 oC was 125 kJ/mol. The enthalpy (∆H) and entropy (∆S), decrease as the increasing concentration of procion red dye. Keywords: layered double hydroxides, polyoxometalate, pillaration, procion red, adsorption

Adsorption of procion red using layer double hydroxide Mg/Al Muhammad Imron; Muhammad Said; Aldes Lesbani
Science and Technology Indonesia Vol. 2 No. 3 (2017): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Layer double hydroxide Mg/Al was synthesized by inorganic synthetic method. Material was characterized using FTIR and XRD analyses and used as adsorbent of procion red dye in aqueous medium. Factors that affect the adsorption process are adsorption time as the kinetic parameter; and the temperature and concentration of procion red as the thermodynamic parameter. FTIR spectra of layer double hydroxides showed unique vibration at wavenumber 1300 cm-1 and 1600 cm-1. Characterization using XRD shows diffraction angles at 29o, 27o, and 28o, which are typical of Mg/Al double layer hydroxides. Adsorption of procion red using layer double hydroxide Mg/Al resulted adsorption rate 7.1 minutes-1, maximum adsorption capacity 111.1 mg/g at 60 oC with increasing energy by increasing adsorption temperature. Keywords: Layered double hydroxides, adsorption, procion red.

Polystyrene Plastic Waste Conversion into Liquid Fuel with Catalytic Cracking Process Using Al2O3 as Catalyst Nurul Kholidah; Muhammad Faizal; Muhammad Said
Science and Technology Indonesia Vol. 3 No. 1 (2018): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

The increase in energy consumption and an increase in the plastic waste generation are two major problems that arise along with economic growth and the increase in population. Styrofoam is one type of polystyrene plastic waste that can be processed into liquid fuels by cracking process. In this study, the cracking process of polystyrene plastic waste into liquid fuel carried by the catalytic cracking process using Al2O3 as a catalyst. This study aimed to determine the effect of the catalyst weight, length of cracking time and range of temperature in the catalytic cracking process of polystyrene plastic waste into liquid fuel toward the mass and characteristics of liquid fuels produced and to determine the composition of liquid fuels produced. The catalytic cracking process of polystyrene plastic waste with catalyst was done in the fixed bed type reactor by heating the reactor with a heater, where the process took place at temperature of 150°C, 200°C, 250°C and 300°C and the length of the process was varied into 20, 40, and 60 minutes and the catalyst weight was also varied, which were 4%, 6% and 8%, while the styrofoam weight was 250 grams. From the research, the highest mass of liquid fuel derived from polystyrene catalytic cracking process was in the amount of 48.8 grams and liquid yield percentage of 19.5% at temperature of 250°C, cracking time of 60 minutes and weight of 8% catalyst, while the characteristics of liquid fuel that were approaching the characteristics of gasoline was at temperatures of 250°C, cracking time of 60 minutes and weight of 6% catalyst, in which each value of density of 0.763 g/ml, specific gravity of 0.778 and oAPI gravity of 50.2. While other liquid fuels obtained from the cracking of polystyrene were still within the tolerance range characteristic properties of gasoline. Liquid fuels produced from the catalytic cracking process was analyzed using a GC-MS, in which the analysis results indicated that liquid fuels were included in the gasoline fraction.

Adsorption of Cobalt (II) on Layered Double Hydroxides (Mg/Al and Ca/Al) In Aqueous Medium : Kinetic and Thermodynamic Aspect Neza Rahayu Palapa; Tarmizi Taher; Muhammad Said; Risfidian Mohadi; Aldes Lesbani
Science and Technology Indonesia Vol. 3 No. 4 (2018): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Layered double hydroxides Mg/Al and Ca/Al has been synthesized by co-precipitation method with molar ratio M2+:M3+ (3:1) at pH 10. The synthesized materials were characterized by XRD and FTIR. The materials were used as adsorbent for the removal Cobalt (II) in aqueous solution. The adsorption experiments were studied through some variables adsorption such as variation of contact time, variation of temperature and variation of initial concentration. Kinetic parameters was obtained from variation of contact time. Data was analyzed by pseudo-first-order and pseudo-second-order kinetics models in linear analyses. The kinetic studies showed that the adsorption process more fitted by pseudo-second-order than pseudo-first-order based on coefficient correlation. Isotherm parameters was calculated using Langmuir and Freundlich isotherm models. The adsorption process was spontaneous and endothermic.

Comparison of Cr/C and Cr2O3/Z Catalysts on Hydrocracking of Bio Oil from Pyrolysis of Palm Empty Fruit Bunches Zainal Fanani; Hasanuddin hasanuddin; Addy Rachmat; Muhammad Said
Molekul Vol 16, No 3 (2021)
Publisher : Universitas Jenderal Soedirman

Bio-oil derived from palm empty fruit bunch is not suitable for fuel purpose due to high acidity and low heating. Cr2O3/Zeolite and Cr/C catalysts was developed to upgrade bio-oil through hydrocracking. The catalyst prepared via impregnation method followed by oxidation-reduction. Ammonia and pyridine adsorption used to evaluate acidity as well as crystallinity assessment by using XRD. Hydrocracking reaction conducted in hydrogen gas flow rates 0.5-3.0 L/min, the surface area of Cr/C catalyst found out 1,497.07-1,652.58 m2/g, whilst the temperatures 450 to 700 ℃ and the catalyst weights between 0.5 to 2.5 g. Acidity calculated from ammonia and pyridine adsorption shows Cr2O3/Zeolite has higher value compare to pristine Zeolite. XRD pattern shows Cr2O3/Zeolite has high crystallinity as indicated by sharp and pointed diffraction peaks. The optimum condition of hydrocracking confirmed by lower density of liquid product. The variables obtained by a separate experiments shows that H2 gas flow rate best at 2.5 L/min, temperature of hydrocracking 500 ℃ for Cr2O3/Zeolite and 600oC for Cr/C whereas weight of Cr2O3/Zeolite catalyst is 1.5 g. The Cr/C catalyst that gave low density product possess 1,554.48 m2/g surface area. GCMS data shows increase on the number of straight chain compounds within the hydrocracking product.

PENGARUH KOMPETENSI, PELATIHAN DAN KEPEMIMPINAN TERHADAP KINERJA Asri Asri; Muhammad Said; Sridamayanti Sridamayanti
SEIKO : Journal of Management & Business Vol 3, No 3 (2020): July - December
Publisher : Program Pascasarjana STIE Amkop Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37531/sejaman.v3i3.726

Kabupaten Polewali Mandar, sebagai salah satu kabupaten yang secara administratif masuk ke dalam Provinsi Sulawei Barat sejak tahun 2004 setelah di mekarkan dari Sulawesi Selatan Penelitian yang ingin dicapai, penelitian berjenis penelitian kuantitatif dengan metode survei dengan teknik analisis korelasional untuk mengetahui pengaruh hubungan variabel terikat dan variabel bebas. Penelitian ini dilakukan pada Dinas Parawisata Propinsi Sulawesi Baratpobulu Variabel yang dominan berpengaruh terhadap kinerja pegawai adalah kompetensi, hal ini berarti peningkatan pengetahuan, keterampilan dan sikap pegawai akan lebih mendorong peningkatan kinerja pegawai pada Dinas Parawisata Propinsi Sulawesi Barat. Keyword : Kompetensi, Kepemimpinan Kinerja

Co-Authors A.M. Ramadhan Abdul Wahab Mohammad Addy Rachmat Ahmad Ahmad Aldes Lesbani Anang Gustianda Aris Munandar Ariyani, Rika Asri Asri Atil Kazria Ayuni Setiawati Bakri Bakri Chalid Imran Musa Dedik Budianta Desi Ardilla Dina Puspita Dinda Tria Artika Dirga Lestari Eddy Suroso Edi Wardani Ensu Ensu Fanani, Muhammad Zainal Fatma Fatma Habibah Hambali Hardi Aji Badarwi Hasanuddin Hasanuddin Hasni Hasni Heny Juniar Hoirun Najwa Ibrahim Ibrahim Indri Septianur Rahmawati Intan Permata Sari iti Nurholiza Juliyati Kristina Tresia Leto Lora Vitanesa M. Alkaf Margi Subahagia Masdania Zurairah Minhajuddin Madi Muhammad Bagus Saputra Muhammad Faizal Muhammad Imron Muhammad Nur Hidayat Muhammad Ryansyah Muliati Muluki Naharuddin SR Nurul Fadilah Aswar Nurul Kholidah Putri, Yuni Adinda Radja Nardo Purba Ramlan Rindiyanti Riris Aishah Prasetyowatir Risfidian Mohadi Rizkha Rida Rulbadiyah Saiful Hakam Satria Jaya Priatna, Satria Jaya Siti Masreah Bernas Siti Rozaimakh Sheikh Abdullah Sri Haryati Sridamayanti Sridamayanti Sukisno S. Riadi Supiani Tarmizi Taher Tina Siti Marfuah Trisna Harmila Wahyu Hidayat Yalis Maulani Yeyen Yeyen Yun Suprani Yun Suprani Yusro Hakimah Yusro Hakimah

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