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All Journal VALENSI Jurnal Ilmiah Widya Jurnal Riset Kimia CHEMPUBLISH JOURNAL Desimal: Jurnal Matematika Indonesian Journal of Chemistry CHEESA: Chemical Engineering Research Articles Pena Literasi Pharmacoscript Journal of Community Service and Empowerment Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.) JURNAL ECONOMINA Jurnal Karya Abdi Masyarakat Babakti : Journal of Community Engangement
Rahmat Basuki
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Religion Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Engineering Health Professions Languange, Linguistic, Communication & Media Mathematics Medicine & Pharmacology Public Health Social Sciences Other

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PERSEPSI TINGKAT KEPUASAN KELUARGA DI RT 03 RW 07 KELURAHAN MAKASAR - JAKARTA TIMUR TERHADAP PROGRAM KONVERSI MINYAK TANAH KE LIQUEFIED PETROLEUM GAS (LPG) Rosita, Rahmi; Basuki, Rahmat
Jurnal Ilmiah Widya Vol 1 No 2 (2013)
Publisher : Lembaga Layanan Pendidikan Tinggi Wilayah III Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (158.61 KB)

Abstract

The National program of converting Kerosene to Liquefied Petroleum Gas (LPG) aims to ensure the provision and procurement of fuel in the country and to reduce fuel subsidies in order to ease the financial burden of the Indonesian country. The purpose of this study is: (1) to analyze the characteristic of the family of the conversion program from kerosene to LPG (2) to determine their interests, satisfaction and perception towards the conversion program. The survey was conducted at RT 03/ RW 07 Kelurahan Makasar, Jakarta Timur. The research used descriptive statistical and library research methods. The sample of 30 respondents taken from 43 families as the population which chosen by probability sampling random. The data analyzed used Importance Performance Analysis (IPA) and Customer Satisfaction Index (CSI). The results obtained are: (1) the families characteristic consists of: (a) dominated by families of ' 3d 4 member (b) aged of husbands/wives of 30 years old., (c) education; hubands/wives: senior high school, (d) occupation; husbands as businessman, wives as housewives, (e) point of sales: small grocery store than agent. (2) The matters of public concern in the use of LPG, including the price factor, resistance factor tube (security) and the availability of LPG 3 kg. (3) The majority of the families are satisfied with the program (3) the perceptions: (a) 85, 21% stated that the use of LPG is more beneficial, and economical cleaner and faster in cooking than using kerosene. (b) There is no force and they accepted the LPG as the kerosene substitute.
Black Water Purification by Activated Carbon from Ilalang Weeds (Imperata cylindrica) Adsorbent in Peatland Rural Area Ngatijo, Ngatijo; Heriyanti, Heriyanti; Putri, Winda Arinda; Irunsah, Aslan; Ishartono, Bayu; Basuki, Rahmat
Jurnal Riset Kimia Vol 13, No 1 (2022): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v13i1.449

Abstract

The black water containing humic acid, HA in peat land rural area is a serious issue. This study aims to synthesis of activated carbon, AC from Ilalang Weeds, IW (Imperata cylindrica) as low-cost adsorbent for HA. The success AC synthesis by H3PO4 activator from IW was evidently characterized by Fourier Transform Infra-Red, FTIR and Scanning Electron Microscopy, SEM. The effects of pH solution, initial HA concentration, and contact time were systematically studied to investigate the performance of Activated Carbon from Ilalang Weeds, ACIW. The results showed the increasing of Langmuir monolayer capacity of HA adsorption on carbon from IW before (49.75 mg g-1) and after (56.82 mg g-1) activation process at the pH optimum 6.0. The equilibrium adsorption data fitted with the isotherm model was shifted from multilayer Freundlich model (CIW) into monolayer Langmuir model as the consequences of increasing pore diameter size and active sites intensity. Calculation of adsorption energy by Dubinin-Radushkevich (EDR) model, 0.50 and 2.24 kJ mol-1 for CIW and ACIW, respectively, showed the increasing of physical affinity of HA with the active sites of adsorbent. Adsorption kinetics showed that the adsorption behavior followed the Ho pseudo-second-order kinetic model. The experimental results of this work demonstrate that the ACIW can be used as a promising low-cost adsorbent for HA removal for clean water production in peat land rural area. 
Nanofikasi Fraksi Tanah Gambut untuk Modifikator Nanomagnetit/AH-Kitosan sebagai Kandidat Penanggulangan Pencemaran Zat Warna Ngatijo Ngatijo; Restina Bemis; Mahya Ihsan; Nurul Gusmaini; Salim Hidayat; Rahmat Basuki
CHEMPUBLISH JOURNAL Vol. 5 No. 2 (2020): Chempublish Journal
Publisher : Universitas Jambi, Fakultas Sains dan Teknologi, Program Studi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v5i2.11105

Abstract

The nanomagnetite/HA-Chitosan adsorbent has been successfully synthesized by the co-precipitation method. HA was synthesized from the peat soils of Geragai village, Tanjung Jabung Timur, Jambi province and chitosan isolated from marine animal shell waste around the city of Jambi. The results of FT-IR analysis showed that nanomagnetite/AH-chitosan has a spectra which was combination of the characteristic spectra of magnetite, HA and chitosan. Morphological analysis using SEM showed that nanomagnetite/AH-chitosan was in the form of fractal agglomerates. TEM image of magnetite/AH-chitosan showed that magnetite/AH-chitosan has nano scale magnetite core particles with a size between 4-22 nm. Crystallinity analysis showed that magnetite/AH-chitosan has 2θ characteristics of magnetite i.e., 30.1°, 35.4°, 43.1°, 57.0°, 62.68° and 74.5°. The magnetic saturation strength (Ms) decreased from 80.23 (magnetite) to 30.63 (magnetite/AH-chitosan) due to the coating of AH-chitosan on magnetite which was still effectively attracted by the external magnet with 96% effectiveness of adsorption of 25 mL Methylene Blue 10 mg/L.
Novel Absorber Material Design Based on Thiazole Derivatives Using DFT/TD-DFT Calculation Methods for High-Performance Dye Sensitized Solar Cell Nurrosyid, Naufan; Fahri, Mirad; Apriliyanto, Yusuf Bramastya; Basuki, Rahmat
Indonesian Journal of Chemical Studies Vol. 1 No. 1 (2022): Indones. J. Chem. Stud., June 2022
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (362.122 KB) | DOI: 10.55749/ijcs.v1i1.5

Abstract

Thiazole derivative molecules with a low energy gap have been successfully designed using the DFT/TD-DFT calculation methods. The calculations were simulated by adding varied numbers of thiophenes (1, 2, 3, and 10) and electron donating molecules of –H, -NH2, -OCH3, and –COOH in the ethanol solvent. The best thiazole derivative was the molecule constructed using a long-conjugated bridge of 10-thiophenes, the carboxyl anchoring site, and an amine addition as the electron donating molecule with an energy gap of 1.66 eV and a strong UV-Vis absorption in the red light region (673.20 nm). These designed molecules are beneficial to be applied in the equator area such as Indonesia. Further, the profound effects of the thiophene bridge in terms of the structural and energy gaps, and the variation of electron-donating molecules affected the photonic properties have been demonstrated in this paper.
Physical Strength Improvement of Nata de Coco by Water Replacement with Carboxymethylcellulose (CMC) as A Potential Bulletproof Material: A Preliminary Study Bolilanga, Patricya Inggrid Wilhelmina; Sekarini, Artanti; Toharani, Dita Cinta; Rahmawati, Fani; Basuki, Rahmat; Ishartono, Bayu; Fahri, Mirad
Indonesian Journal of Chemical Studies Vol. 1 No. 2 (2022): Indones. J. Chem. Stud., December 2022
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (574.296 KB) | DOI: 10.55749/ijcs.v1i2.19

Abstract

The dependence on the imported bullet-proof vest  as one of the main equipments of the National Defense System needs attention. This condition treats the independence of domestic defense security. In contrast, the potential of natural materials for bullet-proof vest plates are abundant in Indonesia. Nata de Coco is one of the natural raw materials for producing bullet-proof vest plates that has the potential to be developed. This preliminary research proved that increasing the bond strength of cellulose in Nata de Coco was performed by adding the appropriate crosslinkers. The addition of carboxymethylcellulose (CMC) 2% crosslinker to form Nata de Coco kevlar-like plates (Navlar) was evidenced to increase threefold tensile strength (99.15 MPa) from its original Nata de Coco (31.92 MPa). The development of Navlar is a very strategic sector for producing high-quality bullet-proof vest plates equivalent to kevlar strength. Navlar is more prospective than Kevlar due to its abundant source, cheap, lightweight, and ease to manufacture. Developing Navlar could replace the dependence on imported Kevlar and support the domestic defense industry.  
Magnetically Separable Humic Acid-Chitin Based Adsorbent as Pb(II) Uptake in Synthetic Wastewater Ngatijo; Marlinda, Lenny; Malikhah, Wukhoidatul; Ishartono, Bayu; Basuki, Rahmat
Indonesian Journal of Chemical Studies Vol. 2 No. 1 (2023): Indones. J. Chem. Stud., June 2023
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ijcs.v2i1.22

Abstract

Modification of humic acid (HA) from the peat soil of Jambi province, Indonesia with chitin and magnetite to form Fe3O4/HA-chitin has been successfully carried out. The successful synthesis was identified from characterization with functional group analysis, crystal analysis, magnetic strength measurement, and morphological and elemental analysis. The application of Fe3O4/HA-chitin to adsorb Pb(II) ion was analyzed using the Lagergren, Ho, Santosa, and RBS kinetics models (kinetics study) and the Langmuir, Freundlich, Dubinin-Radushkevich (DR), and Temkin isotherm model (isotherm study). The kinetics study followed the Ho model (pseudo-second order) with R2 and kHo of 0.9997 and 10264.59 g/mol min, respectively. The results of the data applicable to the Freundlich model showed that several sites were capable of multilayer adsorption (B) with a large enough adsorption capacity of 929.19 mg/g (about 28 times higher than the monolayer adsorption of Langmuir data). However, the outermost layer had a feeble adsorption energy of 0.51 kJ/mol, as measured by Temkin's adsorption energy. In the layer between the first layer (Langmuir) and the outermost layer (Freundlich), the DR isotherm was measured at a capacity of 104.87 mg/g (qD, the 3rd layer of the first layer) the adsorption energy was measured at 12.91 kJ/mol. A cross-study on the prediction of adsorption energy using the Santosa and RBS kinetics models showed that the RBS model had an adsorption energy value (26.45 kJ/mol) that was closer to the adsorption energy value of the Langmuir isotherm (27.55 kJ/mol).
Reaction Mechanism in Standardized α-Cellulose Content Test: Study from Boehmeria nivea Fiber Rahmawati, Fani; Basuki, Rahmat; Fahri, Mirad; Apriliyanto, Yusuf Bramastya; Kurniadi, Tedi; Nareswari, Vania Agatha; Sandri, Azzahra; Istiqomah, Tiara
Indonesian Journal of Chemical Studies Vol. 3 No. 1 (2024): Indones. J. Chem. Stud., June 2024
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ijcs.v3i1.45

Abstract

In defense industry, α-cellulose is the main component of nitrocellulose propellant. However, a detailed description of the reaction mechanism of each treatment step in SNI 0444-2009 is still very scarce. This study addresses this gap by presenting the reaction mechanisms of each treatment and the symbols used in the SNI 0444-2009 procedure. The separation of lignin from α-cellulose occurred by breaking the C‒O bond linking them. This bond was broken by the ‒OH group of NaOH via a hydrolysis reaction. The reaction was initiated with the elimination of a hydrogen atom from the lignin structure by the hydroxyl ion (‒OH), and the C‒O bond was broken by a hydrolysis reaction. The breaking of this bond was indicated by the disappearance of the IR peaks at wavenumbers 1049 and 1190 cm–1 in the filtrate after extraction. The SNI 0444-2009 method for the α-cellulose content test was carried out by a redox back titration of Cr(VI) with Fe(II) from ferrous ammonium sulfate. This titration was conducted to calculate the amount of Cr(VI) ions in potassium dichromate or Cr(VI) that did not react with lignin or beta cellulose in the filtrate. Understanding the contribution and reaction mechanisms of each compound involved in the SNI 0444-2009 procedure contributed to obtaining accurate data on α-cellulose content. In this study, the calculated α-cellulose content of the flax fiber was 96.75%. Furthermore, the detailed mechanism of the redox reaction was discussed in detail in this paper.
Enriching of society’s understanding of command-oriented leadership through an interactive virtual discussion Fahri, Mirad; Stiawan, Elva; Ariyanti, Dita; Basuki, Rahmat; Apriliyanto, Yusuf Bramastya; Hasibuan, Anggi Khairina Hanum; Kurniadi, Tedi; Putra, M. Sulthon Nurharmansyah; Septaningsih, Dewi; Tiarani, Sekar Ilma; Mayori, Ersha; Wiana, Regita Andriani; Yunita, Amalia; Nurrosyid, Naufan; Prasojo, Agus Eko; Putri, Riyanti
Journal of Community Service and Empowerment Vol. 5 No. 2 (2024): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jcse.v5i2.27961

Abstract

In the post-pandemic era, many interactive activities have been flexibly generated through virtual conditions. Accordingly, some problems could appear in terms of leadership, such as difficulties in maintaining the audience’s attention during the event. Thus, the utilization of a command-based leadership style that could straightforwardly maintain audience focus ought to be considered to be adopted. However, both the command-based leadership style and its prospective aspects have not been widely understood by society. This community service aims to deliver a proper understanding of the command-based leadership style through interactive virtual discussion between experts in teaching activities of defense-based science and society consisting of Indonesian teachers, high school students as well as academics. Statistical results of pre-test and post-test scores showed enhancement of the participants’ understanding of command-based leadership. Hopefully, some relevant aspects of their new perspective of command-based leadership can be properly adopted and effectively implemented to answer current challenges, such as in terms of managing people in virtual conditions. 
PUISI DI NEGERI AMPLOP KARYA GUS MUS DALAM REALITAS BERITA OPERASI TANGKAP TANGAN HAKIM AGUNG OLEH KOMISI PEMBERANTAS KORUPSI (KAJIAN FILSAFAT REALISTIK) Basuki, Rahmat; Zuriyati, Zuriyati; Rohman, Saifur
Pena Literasi Vol 5, No 2 (2022): Pena Literasi
Publisher : Fakultas Ilmu Pendidikan Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/pl.5.2.171-179

Abstract

Abstrak Kajian puisi selalu menarik dalam kehidupan sosial bagi penikmat sastra, sastrawan maupun kritikus sastra. Puisi seringkali berhasil memotret realitas kehidupan sehari-hari baik secara personal maupun komunal. Penelitian ini mengkaji kesesuaian ini puisi “Di Negeri Amplop” karya KH. Mustofa Bisri dengan berita tentang operasi tangkap tangan Hakm Agung oleh Komite Pemberantasan Korupsi (KPK) pada bulan Agustus 2022 dengan pendekatan filsafat realisme dalam sastra. Dalam kajian filsafat realisme, posisi karya sastra merupakan dari keadaan sosial budaya yang terjadi di masyarakat dalam aktifitas sehari-hari.  Data-data penelitian ini adalah puisi “Di Negeri Amplop” dan berita tentang Operasi Tangkap Tangan KPK terhadap Hakim Agung MA. Berdasarkan data-data yang didapatkan dalam penelitian ini, ada nilai-nilai filsafat realisme pada puisi “Di Negeri Amplop” dengan kasus OTT KPK terhadap Hakim Agung dengan tersangka lainnya. Pada kasus tersebut, makna puisi “Di Negeri Amplop” memiliki relevansi yang sangat kuat. Meskipun puisi tersebut ditulis pada tahun 2002, semakin kesini semakin kuat relevansinya dengan penyelewengan kekuasaan hukum. Kata Kunci : Puisi, Filsafat Realisme, Gus Mus
Adsorpsi Methylene Blue pada Nanopartikel Magnetit tersalut Asam Humat: Kajian Isoterm dan Kinetika Ngatijo, Ngatijo; Gusmaini, Nurul; Bemis, Restina; Basuki, Rahmat
CHEESA: Chemical Engineering Research Articles Vol. 4 No. 1 (2021)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v4i1.8433.51-64

Abstract

Nanopartikel magnetit merupakan suatu material dengan sifat magnet yang stabil dan memiliki luas permukaan tinggi. Penyalutan nanopartikel magnetit dengan asam humat (AH) dilaporkan dapat meningkatkan stabilitas, kapasitas adsorpsi, dan kemudahan pemisahan pasca adsorpsi. Penelitian ini bertujuan untuk melakukan sintesis Nanopartikel Magnetit tersalut Asam Humat (NpMAH) dengan metode ko-presipitasi dan menentukan parameter adsorpsinya sebagai adsorben Methylene Blue (MB) dengan metode batch. Keberhasilan sintesis ditunjukkan oleh karakterisasi NpMAH dengan FT-IR, XRD, SEM, dan VSM. Parameter isoterm adsorpsi mengindikasikan bahwa adsorpsi terjadi secara lapis tunggal dengan kapasitas adsorpsi sebesar 56,96 mg/g dan energi adsorpsi sebesar 26,31 kJ/mol pada pH optimum 6,0. Parameter kinetika menunjukkan bahwa adsorpsi mengikuti model kinetika Ho (pseudo orde kedua) dengan konstanta laju adsorpsi (kHo) sebesar 12688,71 g/molmenitdan perhitungan MB yang teradsorpsi pada kesetimbangan (qe) sebesar 2,96—10-5 mol/g. Perhitungan energi adsorpsi menggunakan model kinetika Santosa dan RBS berturut-turut 25,67 kJ/mol dan 41,25 kJ/mol.
Co-Authors Abner Tonu Lema Anggi Khairina H H ANGGI KHAIRINA HANUM HASIBUAN Anitasari, Reza Anselmus Boy Baunsele Arief Budi Santiko, Arief Budi ARIYANTI, DITA Aura Puja Lestari Azimatur Rahmi Bayu Ishartono Bolilanga, Patricya Inggrid Wilhelmina Dewi Anggraini S Dwi Siswanta Elva Stiawan Esti, Mumpuni Fahri, Mirad Fidelis Nitti Gunaryo Gusmaini, Nurul Heriyanti Heriyanti, Heriyanti Hildegardis Missa Ihsan, Mahya Irunsah, Aslan Istiqomah, Tiara Kurnia Krisna Hari Kurnia, Adi Kurniadi, Tedi Lazuardy, Ardyan Lenny Marlinda M. Sulthon Nurharmansyah P Malikhah, Wukhoidatul Mayori, Ersha Mentari Zikri Anty Minandre Wiratama Mirad Fahri Moch. Rizki Fajri Muh. Darwis Naat, Johnson N. Nareswari, Vania Agatha Neolaka, Yantus A B Ngatijo Ngatijo Ngatijo Ngatijo Ngatijo Nugroho Sasongko Jati, Nugroho Sasongko Nurrosyid, Naufan Nurul Gusmaini Prajanti, Fina Dwi Prasojo, Agus Eko Prawira, Ajeng Arimby Setyaningsih Putri Yan Putra, M. Sulthon Nurharmansyah Putri, Riyanti Putri, Winda Arinda Rahayu Rahayu Rahmawati, Fani Rahmi Rosita Ratna, Djamil Restina Bemis Restina Bemis, Restina Sabrina, Nina Safari, Ibnu Wahid Saifur Rohman Salim Hidayat Sandri, Azzahra Sekarini, Artanti Septaningsih, Dewi Tedi Kurniadi Tiarani, Sekar Ilma Toharani, Dita Cinta Wiana, Regita Andriani Yunita, Amalia Yusuf Bramastya A Yusuf Bramastya Apriliyanto Zuriyati Zuriyati