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All Journal VALENSI EKSAKTA: Journal of Sciences and Data Analysis Reaktor JURNAL KIMIA SAINS DAN APLIKASI Prosiding Seminar Nasional MIPA Wahana Matematika dan Sains Alchemy : Journal of Chemistry JURNAL PIJAR Journal of Mathematical and Fundamental Sciences Elkawnie PROSIDING SEMINAR KIMIA Jurnal Litbang Industri INDONESIAN JOURNAL OF PHARMACY Al-Kimia Indonesian Journal of Chemistry Sains Natural: Journal of Biology and Chemistry Chemistry Indonesian Journal of Chemical Research ALKIMIA : Jurnal Ilmu Kimia dan Terapan Jurnal Ilmiah Teknik Kimia Jurnal Inovasi Teknik Kimia Molluca Journal of Chemistry Education (MJoCE) Jurnal Riset Teknologi Pencegahan Pencemaran Industri Jurnal Pijar MIPA Jurnal Farmasi Etam Jurnal Ilmiah Berkala Sains dan Terapan Kimia Jurnal Litbang Industri Jurnal Natural Molekul: Jurnal Ilmiah Kimia Bulletin of Chemical Reaction Engineering & Catalysis JURNAL REKAYASA KIMIA & LINGKUNGAN
Dwi Siswanta
Chemistry Department , Faculty Of Mathematics And Natural Science, Gajah Mada University, Sekip Utara, Yogyakarta, Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Physics Social Sciences

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Batik Wastewater Treatment by Using Mono and Polyculture Phytoremediation Utilized Giant Salvinia (Salvinia molesta) and Water Spinach (Ipomoea aquatica) Bastiana, Adinda Putri; Siswanta, Dwi; Suherman, Suherman
Molekul Vol 20 No 3 (2025)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2025.20.3.12164

Abstract

ABSTRACT. Phytoremediation with mono and polyculture systems of giant salvinia (Salvinia molesta) and water spinach (Ipomoea aquatica) plants for the treatment of batik wastewater has been carried out. This research aims to study the effect of giant salvinia and water spinach plants in reducing pollutant levels in batik wastewater, determine the order kinetics of Cu, TDS, and BOD reduction in monoculture and polyculture systems, and determine the effectiveness of Cu, TDS, and BOD reduction in monoculture against polyculture system. The research methodology included two main treatments, namely phytoremediation and data analysis. Phytoremediation was carried out by varying the combination of water spinach and giant salvinia plants with ratio of 0:100, 50:50, and 100:0 with a total plant mass of 100 gr. Analysis was conducted based on spectrophotometric and gravimetric principles. The results of the analysis were tested for significance by ANOVA test. Research data showed that polyculture of giant salvinia (Salvinia molesta) and water spinach (Ipomoea aquatica) could increase the effectiveness of reducing Cu metal by 91%, dye by 90%, and TDS by 36%. While polyculture system has better effectiveness in reducing Cu metal, TDS and dyes concentration than monoculture system, but the difference in effectiveness is not statistically significant. Keywords: Batik wastewater, Ipomoea aquatica, mono and polyculture, phytoremediation, Salvinia molesta.
Determination of Kinetic and Thermodynamic Parameters of Pb(II) Ion Adsorption Using Dithizone-Immobilized Coal Fly Ash Rizal B., Muh; Mudasir, Mudasir; Siswanta, Dwi; Muharmi, Melvi; Ardina, Vebria; Setyawan, Teguh; Jaya, Nur; Permatasari, Defia Indah; Tanjung, Revi Maylina
Jurnal Kimia Sains dan Aplikasi Vol 29, No 1 (2026): Volume 29 Issue 1 Year 2026
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.29.1.1-9

Abstract

The immobilization of dithizone on the surface of coal fly ash was successfully achieved, as evidenced by Fourier-transform infrared (FT-IR) and X-ray diffraction (XRD) characterization. The dithizone-immobilized coal fly ash (CFA-Dzt) was then used for Pb(II) ion adsorption. The parameters studied included the effects of pH, kinetics, and thermodynamics on Pb(II) ion adsorption using a batch experimental system. The results showed that the optimum pH for Pb(II) adsorption using CFA-Dzt was 5. The adsorption kinetics of Pb(II) ions followed the pseudo-second-order kinetic model, with an adsorption activation energy of 27.280 kJ mol−1. The Langmuir isotherm model best described the adsorption behavior, with a maximum adsorption capacity of 34.13 mg g−1. Thermodynamic analysis revealed Gibbs free energy changes (ΔG°) of 24.630, 25.850, 26.810, and 28.550 kJ mol−1 at 293, 303, 313, and 323 K, respectively. The enthalpy change (ΔH°) of the adsorption at this temperature range was +12.770 kJ mol−1, indicating that Pb(II) ion adsorption on the adsorbent is an endothermic process, and its entropy change (ΔS°) was +127.290 J mol−1, suggesting that the adsorption of Pb(II) ion on CFA-Dzt is dominantly driven by the entropic factor.
Syringe Solid-Phase Extraction for Cu(II) in Powder Milk Using Alginate-Chitosan-PVA Adsorbents: Method Development and Application Yaqin, Ahmad Akhib Ainul; Siswanta, Dwi; Suherman, Suherman
Indonesian Journal of Chemistry Vol 26, No 2 (2026)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.112867

Abstract

This research designed and optimized a syringe solid-phase extraction (SPE) technique employing a modified chitosan, alginate, and PVA (CAP) adsorbent for the determination and preconcentration of Cu(II) ions in powdered milk samples. The material was characterized using FTIR, SEM-EDX, and XPS analyses, which confirmed the detection of predominant –COOH, –NH2, and –OH functional groups. Optimization of the method was performed using both the one-variable-at-a-time (OVAT) approach and the central composite design (CCD) method. Parameters such as pH, CAP dosage, number of samples, and eluent (including HNO3) were evaluated. Optimal OVAT conditions were pH 4.0, 100 mg CAP, 5 samples, and eluent cycles with 2.0 M HNO3, achieving a 100-fold preconcentration. CCD optimization yielded similar results, with slight variations: optimal pH 4.3, CAP mass 105 mg, and 5 eluent cycles with 2.0 M HNO3. CAP exhibited high selectivity (90–99%) and was reusable for up to three adsorption–desorption cycles. Validation using reference material (ERM–BD151) resulted in a recovery of 95.4% for Cu(II). Application of the validated method to real milk samples yielded recoveries of 90.8–97.8%, demonstrating high accuracy. These findings suggest that syringe SPE using CAP is an efficient technique for Cu(II) preconcentration in food matrices.
Penentuan Metode Komputasi Untuk Analisis Hubungan Kuantitatif Struktur dan Aktivitas Senyawa Turunan Triazolopiperazin Amida Anjar Purba Asmara; Mudasir Mudasir; Dwi Siswanta
Elkawnie Vol. 1 No. 1 (2015)
Publisher : Faculty of Science and Technology Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v1i1.515

Abstract

Penentun metode komputasi untuk analisis hubungan kuantitatif struktur dan aktivitas (HKSA) telah dilakukan pada senyawa turunan triazolopiperazin amida sebagai inhibitor enzim DPP IV yang merupakan penyebab diabetes melitus tipe 2 (DM2). Metode komputasi yang digunakan untuk analisis ini adalah metode semiempirik. Analisis dilakukan dengan pemodelan struktur senyawa turunan triazolopiperazin amida dan perhitungan deskriptor HKSA dilakukan menggunakan program Hyperchem. Parameter yang digunakan adalah pergeseran kimia 13C NMR, panjang ikatan antaratom, sudut ikatan antaratom, dan muatan atom bersih. Hasil perhitungan parameter tersebut dibandingkan dengan data empiris dan hasil perhitungan metode ab initio. Hasil penelitiannya menunjukkan bahwa metode semiempirik yang sesuai untuk analisis HKSA senyawa turunan triazolopiperazin amida adalah AM1 dan PM3.
Analisis Hubungan Kuantitatif Struktur Dan Aktivitas Senyawa Turunan Triazolopiperazin Amida Menggunakan Metode Semiempirik AM1 Anjar Purba Asmara; Mudasir Mudasir; Dwi Siswanta
Elkawnie Vol. 1 No. 2 (2015)
Publisher : Faculty of Science and Technology Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v1i2.525

Abstract

QSAR studies had done on derivatives of triazolopiperazine amide as inhibitors DPP IV enzyme that causes diabetes mellitus type 2. The studies had began by modeling the structures of the derivatives of triazolopiperazine amide and calcutating the descriptors of QSAR by semiempirical AM1 method which available on HyperchemÒprogram. QSAR analysis had done by multilinear regression method analysis which is available on SPSSÒprogram using electronic and molecular parameters. The best QSAR equation model for method of semiempirical AM1:-log IC50 =  152.252 + (18,.295*qC1) + (2.343*qC5) + (2263.448*qC9) +  (1662.252*qC10) – (350.806*qC15) + (639.687*qO25)+ (6.515*EH)n = 18; r2 = 0.712; adjusted r2 = 0.510; Fhit/Ftab = 1.124; PRESS = 0.006 The main side of the compound can be determined through the equation. It can be used to study in preventing the disease of DM2 by inhibiting of enzyme DPP IV.
Co-Authors ., Jumina Abdul Karim Zulkarnain Abner Tonu Lema Adhitasari Suratman Adhitasari Suratman Adhitasari Suratman Adhitasari Suratman Agnes Dyah Novitasari Lestari Agung Abadi Kiswandono Ahmad Nasir Pulungan Akhmad Damsyik Aloisius M. Kopon Aloisius Masan Kopon Anjar Purba Asmara Anselmus Boy Baunsele Ardina, Vebria Bambang Kuswandi Bambang Kuswandi Bambang Rusdiarso Bambang Rusdiarso Bastiana, Adinda Putri Defia Indah Permatasari Desi Suci Handayani Dhony Hermanto Eko Sugiharto Eko Sugiharto Eni Kartika Sari Erly Grizca Boelan Faderina Komisia Febi Indah Fajarwati Febriasari, Arifina Febriasari, Arifina Fidelis Nitti Fitriana, Dina Fitrilia Silvianti Girsang, Ermi Herdiansyah Herdiansyah Herdiansyah Herdiansyah Hidetaka Kawakita Hildegardis Missa JAYA, NUR Johnson N Naat Jumina Jumina Jumina Jumina Jumina Jumina Juniva Laila Sihombing, Juniva Laila Karelius Karelius Keisuke Ohto Kopon, Aloisius Masan Leba, Maria A. U. Maria A. U. Leba Maria Aloisia Uron Leba Maria Benedikta Tukan Melvi Muharmi Merpiseldin Nitsae Mudasir Mudasir Mudasir Mudasir Mudasir Mudasir Mudasir Mudasir Muhammad Cholid Djunaidi Mustofa Mustofa Neolaka, Yantus A B Ni Putu Sri Ayuni Nindita Clourisa Amaris Susanto Nugraha, Gerry Nurillahi Febria Leswana Nurul Hidayat Aprilita Nurul Ismillayli Pratama J. Wibawa Rahayu Rahayu Rahayu Rahayu Rahmat Basuki Rahmat Basuki Retno Ariadi Lusiana Rika Wulandari Rika Wulandari Rizal B., Muh Romelos Untailawan Sehol, Muhamad Setyawan, Teguh Soerja Koesnarpadi Sri Juari Santosa Sri Juari Santosa Sri Juari Santosa Suherman, Suherman Suyanta Suyanta Taek, Maximus M. Takashi Hayashita Tanjung, Revi Maylina Triana Kusumaningsih Tukan, Gerardus D. Uripto Trisno Santoso Widya Krestina, Luqman Hakim, Dyah Ayu Pramoda Wardani, Yaqin, Ahmad Akhib Ainul