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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat
Muh. Rizal B
Department Of Chemistry, Faculty Of Sciences And Technology, Universitas Jambi, Jambi|Universitas Jambi|Indonesia
Religion Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Engineering Languange, Linguistic, Communication & Media Nursing Public Health Social Sciences

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Determination of Kinetic and Thermodynamic Parameters of Pb(II) Ion Adsorption Using Dithizone-Immobilized Coal Fly Ash Muh Rizal B.; Mudasir Mudasir; Dwi Siswanta; Melvi Muharmi; Vebria Ardina; Teguh Setyawan; Nur Jaya; Defia Indah Permatasari; Revi Maylina Tanjung
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.
Pengaruh Hemodialisa Terhadap Nilai Hemoglobin dan Kreatinin Pada Pasien Penyakit Ginjal Kronik Di Unit Hemodialisa RSUD Undata Nur Jaya; Revi Maylina Tanjung; Rani Khoiriyah; Melvi Muharni; Teguh Setyawan; Defia Indah Permatasari; Muh. Rizal B; Meyzaluna Salsabila Adam
Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Vol. 5 No. 6 (2025): November 2025 - Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat
Publisher : Indonesian Scientific Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59395/altifani.v5i6.962

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh hemodialisa terhadap kadar hemoglobin dan kreatinin pada pasien gagal ginjal kronik di Unit Hemodialisa RSUD Undata. Penelitian ini menggunakan metode kuantitatif dengan desain pre-eksperimental jenis one group pretest-posttest. Sampel sebanyak 88 pasien diambil menggunakan teknik purposive sampling. Data kadar hemoglobin dan kreatinin sebelum dan sesudah hemodialisa dianalisis menggunakan uji Paired Sample T-Test. Hasil penelitian menunjukkan bahwa kadar kreatinin sebelum hemodialisa sebesar 11,464 gr% menurun menjadi 9,211 gr% setelah hemodialisa dengan nilai signifikansi p = 0,00017 (p < 0,05). Sementara itu, kadar hemoglobin meningkat dari 9,440 gr% menjadi 9,939 gr% setelah hemodialisa, dengan nilai p = 0,00053 (p < 0,05). Hasil ini menunjukkan bahwa terdapat perbedaan yang signifikan sebelum dan sesudah hemodialisa. Dapat disimpulkan bahwa hemodialisa memberikan pengaruh yang signifikan terhadap penurunan kadar kreatinin dan peningkatan kadar hemoglobin pada pasien gagal ginjal kronik. Diperlukan pemantauan berkelanjutan terhadap parameter darah lainnya selama terapi hemodialisa untuk mendukung keberhasilan terapi.
Co-Authors Ardina, Vebria Defia Indah Permatasari Dwi Siswanta Melvi Muharmi Melvi Muharni Meyzaluna Salsabila Adam Mudasir Mudasir Nur Jaya Nur Jaya Rani Khoiriyah Revi Maylina Tanjung Revi Maylina Tanjung Teguh Setyawan Teguh Setyawan