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All Journal International Journal of Renewable Energy Development Journal of Degraded and Mining Lands Management The Journal of Pure and Applied Chemistry Research IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Biomedical Journal of Indonesia Science and Technology Indonesia Jurnal Penelitian Sains Indonesian Journal of Chemistry Communications in Science and Technology CHEESA: Chemical Engineering Research Articles Molekul: Jurnal Ilmiah Kimia Jurnal Gema Ngabdi Jurnal Abdi Insani Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Jurnal Abdi Masyarakat Indonesia Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat SRIWIJAYA JOURNAL OF ENVIRONMENT Makara Journal of Science Jurnal Pepadu Jurnal Ruaya : Jurnal Penelitian dan Kajian Ilmu Perikanan dan Kelautan Aceh International Journal of Science and Technology Molekul: Jurnal Ilmiah Kimia Komunita: Jurnal Pengabdian dan Pemberdayaan Masyarakat Bulletin of Chemical Reaction Engineering & Catalysis
Poedji Loekitowati Hariani
Department Of Chemistry, Universitas Sriwijaya
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Veterinary

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PELATIHAN PEMBUATAN LULUR TRADISIONAL DARI DAUN BIDARA (Ziziphus spina christi L.) DI DESA TANJUNG BARU, OGAN ILIR, SUMATRA SELATAN Hariani, Poedji Loekitowati; Fatma; Ahadito, Bijak Rihandi; Said, Muhammad; Rohendi, Dedi
Jurnal Abdi Insani Vol 11 No 1 (2024): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v11i1.1379

Abstract

Perawatan kulit dan wajah telah dikenal sejak dahulu kala dan telah menjadi bagian dari kebudayaan masyarakat Indonesia. Masyarakat semakin menyadari bahaya kosmetika dari bahan kimia. Interaksi bahan kimia dengan kulit seringkali menimbulkan masalah seperti iritasi, komedo, kulit semakin kering, bahkan kulit menghitam dan mengelupas. Seiring dengan konsep back to nature, yaitu kembali menggunakan bahan alami untuk merawat kecantikan kulit maka perlu dikembangkan potensi lokal sebagai bahan baku perawatan kulit. Kegiatan pengabdian masyarakat yang dilakukan di desa Tanjung Baru kecamatan Indralaya Utara, Ogan Ilir bertujuan untuk memberikan pelatihan pembuatan lulur tradisional untuk perawatan wajah dan kulit dari daun bidara. Peserta kegiatan adalah ibu-ibu dan remaja putri, karena mereka yang sering melakukan perawatan tersebut. Kegiatan berupa penyuluhan tentang pentingnya perawatan kulit dan wajah, pelatihan cara pembuatan lulur dari daun bidara, cara penggunaan lulur dan penyimpanan. Selanjutnya dilakukan evaluasi melalui Pre-test, Pos-Tes dan kuesioner. Hasil kegiatan menunjukkan adanya peningkatan pemahaman peserta kegiatan tentang perawatan kulit dan wajah, meningkatnya pengetahuan tentang bahaya kosmetik dari bahan kimia dan meningkatnya pengetahuan penggunaan bahan nabati sebagai bahan baku lulur dari semula 35,33 % menjadi 95,33 %. Berdasarkan hasil kuesioner menunjukkan bahwa peserta kegiatan menyukai produk lulur yang dihasilkan. Hasil uji tingkat kesukaan menunjukkan sebanyak 86,68 % peserta sangat suka terhadap 5 jenis tingkat kesukaan yang diujikan yaitu aroma, tekstur, warna, kekentalan dan kenyamanan lulur dari daun bidara. Tidak ada peserta yang menyatakan tidak suka, kurang suka dan netral. Hasil kegiatan menunjukkan lulur dari daun bidara diterima dengan baik, peserta juga antusias melanjutkan membuat lulur untuk perawatan kulit dan wajah.
Modification of SiO2 from Rice Husk with Polyvinyl Alcohol (PVA) as Adsorbent of Congo Red Dye Sibarani, Robert; Abdullah, Abdullah; Hariani, Poedji Loekitowati
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 10, No 2 (2025): June 2025
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v10.i2.117

Abstract

Rice husk is an agricultural waste abundant in silica (SiO₂). SiO2 extracted from rice husk has a porous structure, so it has the potential to be used as an adsorbent material. To increase the stability and effectiveness of the adsorption process, SiO2 was modified by adding Polyvinyl Alcohol (PVA) and used to removal Congo red dye. SiO₂ extraction was carried out through a calcination process at three different temperatures, namely 600, 700, and 800 °C. Morphological analysis and elemental composition using SEM-EDX showed the presence of a polymer layer on the surface of the material, which functions as a distribution medium for SiO₂ particles. In addition, an increase in carbon (C) content was detected after the addition of PVA, confirming the presence of PVA in the composite. The optimum conditions for the adsorption process of Congo red dye by SiO₂-PVA were obtained at pH 1, contact time 75 minutes, and solution concentration 75 mg/L. Experimental data showed that the Langmuir isotherm model was most suitable for describing adsorption behavior compared to the Freundlich model, with an adsorption capacity of 14.31 mg/g. These results indicate that SiO₂-PVA has the potential as an alternative adsorbent for the treatment of waste containing dyes.  
Synthesis and Characterization Composite Fe3O4/Chitosan-PVA/TiO2 for Photocatalytic Degradation of Tetracycline Denada, Laellia; Poedji Loekitowati Hariani; Addy Rachmat
The Journal of Pure and Applied Chemistry Research Vol. 14 No. 3 (2025): Edition September-December 2025
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2025.014.03.7945

Abstract

This research aims to synthesize tetracycline waste which pollutes the environment, can be overcome by a photocatalytic degradation process using a Fe3O4/Chitosan-PVA/TiO2 composite synthesized using the coprecipitation method. The Fe3O4/Chitosan-PVA/TiO2 composite was characterized by X-Ray Diffraction (XRD), Scanning Electron Microscope- Energy Dispersive Spectroscopy (SEM-EDS), Vibrating Sample Magnetometer (VSM), Ultraviolet-Visible Diffuse Reflectance Spectroscopy (UV-Vis DRS) and pHpzc. The crystallite size of 28.29 nm. The morphology of the composite shows a heterogeneous form with the constituent elements being C (7.69%), N (12.78), O (14.88%), Fe (63.33%) and Ti (1.29%). The saturation magnetization value of 64.24 emu/g is superparamagnetic with a band gap value of 1.38 eV and pHpzc at pH 6.8. The degradation process was studied by investigating the influence of several parameters, namely, solution pH, tetracycline concentration and irradiation time. The efficiency of tetracycline degradation by Fe3O4/Chitosan-PVA/TiO2 was 94.85% at pH 2, concentration of 15 mg/L and radiation time of 70 minutes. The results of Total Organic Carbon (TOC) analysis in a 15 mg/L tetracycline solution before degradation were 20.3 mg/L and after degradation were 5.59 mg/L with a percent reduction in carbon content of 72.46%.
Development of a Concentration Cell Potentiometric Method for Fe2+ and Fe3+ Speciation Izzati, Izzati; Suheryanto, Suheryanto; Hariani, Poedji Loekitowati
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 3 (2023): October 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i3.115

Abstract

The speciation of Fe2+ and Fe3+ iron ions using the concentration cell potentiometric method has been developed. The determination and speciation of metals that have been used include potentiometry using comparison electrodes, selective ion electrodes, and voltammetry. The concentration cell potentiometric method has the advantages of simple equipment, the use of common metal electrodes, high selectivity, and relatively low detection limits. The method validation results for Fe2+ and Fe3+ ion speciation were LOD: Fe2+ 0.22 mg/L Fe3+ 0.29, LOQ: Fe2+ 0,92 mg/L ; Fe3+ 0,01 mg/L, precision (1.17%; 1.2%) and accuracy (95.57%; 93.15%) based on CV Horwtz.  This method has been well applied for Fe2+ and Fe3+ speciation in natural water samples. The concentrations of Fe2+ and Fe3+ species in Sekanak river water were (1.88 mg/L; 2.07 mg/L). Concentration of Fe2+ and Fe3+ species in well water samples (0.5 mg/L; 1.32 mg/L).
Integration of Internet of Things (IoT) on Web-based Chemistry Learning Filantropie, Annisa; Suheryanto, Suheryanto; Hariani, Poedji Loekitowati
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 3 (2023): October 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i3.120

Abstract

The development of science and technology, especially the development of the internet is very rapid today. The world of education, needs to develop learning innovations involving the internet. Internet of Things is one of the innovative technologies that can connect a device or object into a large data base so as to speed up the information process through the power of the internet network. The application of the Internet of Things in high school chemistry learning, especially in the concentration cell potentiometry method, can be used in practicum in school laboratories. The results showed that the combined method of concentration cell potentiometry integrated with the Internet of Things (Pot-IoT) has been proven effective (n-gain = 0.7208) to be used as a learning medium for the practicum of measuring Pb metal in water samples at school.
Synthesis, Characterization and Antibacterial Activity of Rice Husk Biochar/MnFe2O4 Nanocomposites Afrizki, Oka Yana; Hariani, Poedji Loekitowati; Aprianti, Nabila
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 1 (2026): February 2026
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v11.i1.48

Abstract

The increasing contamination with microorganisms has driven the development of effective, environmentally friendly antibacterial materials. Biochar was used as a porous matrix to support the dispersion of MnFe₂O₄ particles and to enhance the material's surface area. This study aims to synthesize a rice husk–based biochar/MnFe₂O₄ composite and evaluate its structural and morphological characteristics, as well as antibacterial activity. The composite was synthesized by coprecipitation and characterized by X-ray Diffraction (XRD), Scanning Electron Microscopy–Energy Dispersive X-ray Spectroscopy (SEM–EDX), and Fourier Transform Infrared Spectroscopy (FTIR). Antibacterial activity was evaluated using the disk diffusion method against Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive) at concentration variations of 1000–5000 mg/L. XRD results confirmed the formation of a spinel MnFe₂O₄ phase, as indicated high-intensity diffraction peaks   at 31.56° and 35.22° and the average crystallite size calculated using the Scherrer equation was approximately 27.1 nm, indicating the formation of nanocrystalline domains. SEM analysis revealed that MnFe₂O₄ nanoparticles were uniformly dispersed on the biochar surface, while EDX confirmed the presence of C, O, Mn, and Fe elements. FTIR analysis identified –OH, C=O, and C–O functional groups, along with characteristic Mn–O and Fe–O vibrations, confirming successful composite formation. Antibacterial activity increased with concentration, reaching a maximum inhibition zone of 7.2 mm against both E. coli and S. aureus at 5000 mg/L, indicating mild antibacterial performance. The composite exhibits eco-friendly characteristics due to its biomass-derived biochar matrix and offers magnetic separability, facilitating easy recovery and potential reuse for sustainable environmental applications.Keywords: Rice husk biochar, MnFe₂O₄, antibacterial activity
Preconcentration of Cr(III) Using Dowex 50WX2-200 Resin and Its Application to River Water Nuraini, Siti; Suheryanto, Suheryanto; Hariani, Poedji Loekitowati
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 2 (2023): June 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i2.105

Abstract

Cr(III) is one of the most stable chromium species in nature, Cr(III) species are not carcinogenic to humans, but if the levels in the body exceed 0.2 mg / day it is very dangerous for the body especially in the respiratory tract. The presence of chromium in the aquatic environment is so low that it is very difficult to detect it using instruments with various limitations to detect it, therefore preconcentration techniques are carried out to overcome the issue. In this study the water sample was adjusted pH using HNO3 0.1 M or NaOH 0.1 M, after which it was passed in the dowex column 50WX2-200. Furthermore, an elution process was carried out using the 1 M HNO3 eluent, the eluat was measured for absorbance with flame AAS. The results of Cr(III) preconcentration optimization are: resin weight 0.5 g, HNO3 eluent concentration 1 M, solution pH 3 and sample volume 50 – 100 mL. The Cr(III) preconcentration technique using Dowex 50WX2-200 resin has been applied to river water samples with a detectable concentration of 0.0075 mg/L.
Pelatihan Pembuatan Sabun Padat Transparan Antibakteri dari Ekstrak Daun Tembesu untuk Meningkatkan Keterampilan Masyarakat Desa Tanjung Seteko Harmida; Tanzerina, Nina; Lamin, Syafrina; Aminasih, Nita; Muharni; Hariani, Poedji Loekitowati
Jurnal Abdi Masyarakat Indonesia Vol 6 No 2 (2026): JAMSI - Maret 2026
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54082/jamsi.2697

Abstract

Penggunaan sabun herbal berbasis tanaman lokal semakin populer sebagai alternatif alami pengganti sabun sintetis yang mengandung bahan kimia. Kegiatan pengabdian kepada masyarakat ini memberikan pelatihan pembuatan sabun padat transparan antibakteri dari ekstrak daun tembesu. Ekstrak daun tembesu mengandung senyawa bioaktif seperti fenolik, tanin, alkaloid, steroid, terpenoid, flavonoid, dan saponin yang bersifat antibakteri. Kegiatan pengabdian Masyarakat dilaksanakan di desa Tanjung Seteko, kecamatan Indralaya, kabupaten Ogan Ilir dengan khalayak sasaran ibu-ibu PKK dan para remaja putri. Metode kegiatan dilaksanakaan dengan tahapan (i) penyuluhan, (ii) pelatihan dan (iii) evaluasi. Evaluasi dilakukan dengan pretes dan postes untuk mengetahui tingkat pemahaman peserta terhadap materi dan evaluasi penerimaan terhadap produk sabun yang dihasilkan. Hasil pretes dan postes menunjukkan terjadinya peningkatan pengetahuan dan ketrampilan peserta mengenai sabun padat transparan antibakteri berbahan ekstrak daun tembesu. Sebelum pelatihan, peserta yang mampu menjawab pretes dengan tepat hanya 16,67%, dan meningkat menjadi 90,0% setelah kegiatan dilakukan. Hasil evaluasi ini merupakan indikator keberhasilan kegiatan pengabdian masyarakat. Evaluasi terhadap penerimaan produk sabun dengan 7 kriteria yaitu warna, tekstur, busa, stabilitas, aroma, penampilan dan kenyamanan memperlihatkan bahwa masyarakat menerima dan menyukai sabun padat transparan antibakteri tersebut.
Pemberdayaan Masyarakat melalui Pelatihan Pembuatan Salep Herbal Infeksi Kulit dari Ekstrak Daun Kembang bulan di Desa Tanjung Seteko Ferlinahayati Ferlinahayati; Salni Salni; Addy Rachmat; Hermansyah Hermansyah; Poedji Loekitowati Hariani
Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Vol. 6 No. 2 (2026): Maret 2026 - 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.v6i2.1095

Abstract

Kegiatan pengabdian masyarakat ini bertujuan memberikan pelatihan kepada masyarakat, khususnya ibu-ibu dan remaja karang taruna di Desa Tanjung Seteko, Kecamatan Indralaya, Kabupaten Ogan Ilir tentang pembuatan salep herbal dari ekstrak daun Kembang bulan sebagai alternatif pengobatan infeksi kulit. Ekstrak daun Kembang bulan diketahui memiliki kandungan bioaktif yang bersifat antibakteri dan antioksidan. Pelaksanaan kegiatan pengabdian dilakukan melalui tiga tahapan, yaitu penyuluhan, pelatihan pembuatan salep, dan pengunaan untuk pengobatan serta evaluasi kegiatan. Khalayak sasaran sebanyak 30 orang. Secara umum, masyarakat telah memahami pentingnya menjaga kesehatan kulit, namun masih belum mengetahui pemanfaatan daun Kembang bulan sebagai bahan pengobatan alami. Setelah kegiatan, tingkat pemahaman peserta mengenai salep herbal dari ekstrak daun Kembang bulan meningkat dari 16,67% sebelum pretes menjadi 90 % setelah postes. Produk salep yang dihasilkan juga mendapatkan tanggapan positif dari peserta. Keberhasilan kegiatan ini turut meningkatkan kesadaran masyarakat akan pentingnya memanfaatkan bahan alami yang aman dan ramah lingkungan sebagai alternatif pengobatan.
Green Synthesis of CuO-Doped Fe₃O₄ for Degradation of Crystal Violet Dye: RSM-Based Optimization Ady Mara; Fahma Riyanti; Desnelli; Poedji Loekitowati Hariani
CHEESA: Chemical Engineering Research Articles Vol. 9 No. 1 (2026): In Progress
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v9i1.24394.1-14

Abstract

The limitations of CuO photocatalyst include high electron–hole recombination and low charge-transfer efficiency. In this context, doping with Fe3O4 is used to form a heterojunction, which enhances charge separation, increases electron transfer, and imparts magnetic properties for easy separation and reuse of the catalyst. Therefore, this study aimed to synthesize a biphasic CuO/Fe₃O₄ composite using Rhodomyrtus tomentosa leaf extract as a green reducing agent, and evaluate the performance as a photocatalyst for the degradation of Crystal Violet Dye (CVD). Structural, morphological, optical, and magnetic properties were characterized using X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM–EDX), UV–Vis diffuse reflectance spectroscopy (DRS), and vibrating sample magnetometer (VSM). XRD patterns confirmed the coexistence of CuO and Fe₃O₄ phases, indicating successful composite formation. VSM analysis reported that the composite had magnetic properties with a saturation magnetization and band gap values of 46.92 emu/g and 1.63 eV, respectively. Process optimization was conducted using Response Surface Methodology (RSM) based on Central Composite Design (CCD). The results showed that the quadratic model was the most appropriate and statistically significant model, indicated by a p-value < 0.05 with a coefficient of determination (R2) of 0.9953. In addition, optimization of the degradation process led to CVD degradation efficiency of 98.73% under optimal conditions of initial concentration of 25.4 mg/L, pH 9.5, and irradiation time of 39.4 min with a visible-light radiation source. The composite also reported good reusability, retaining 92.11% of degradation efficiency after five cycles, confirming the potential as a magnetically recoverable, environmentally sustainable photocatalyst for wastewater treatment applications.
Co-Authors Abdullah Abdullah Addy Rachmat Addy Rachmat Ady Mara Afrizki, Oka Yana Ahmad Fatoni Ahmad Fatoni Ahyati Fadilah Aldes Lesbani Aldi Herbanu Amallia, RA Hoetary Tirta Amri, Nanda Hasanul Aria Septi Handayani Aroef, Hukmanan Rais Asia Asia Afriyani Astri Nurmayansih Bijak Riyandi Ahadito Damayanti Damayanti Dedi Rohendi Dedi Rohendi Denada, Laellia Desneli Desneli Desnelli Desnelli Desnelli Eddy Ibrahim Elfita Elfita Elfita Elfita Endri Junaidi Eva Musifa Evi Yuliana, Evi Fahma Riyanti Fatma Fatma Febrina Sari Ferlinahayati Ferlinahayati Filantropie, Annisa Handayani Citra Pratiwi Hanifa, Hanifa Marisa Harmida Harmida Harmida Hasanudin Hasanudin Heni Oktaviani Heni Yohandini Herlina Herlina Hermansyah Hermansyah Hermansyah Hermansyah Hermansyah Hermansyah Hermansyah Herpandi . Hery Widijanto Hesti Ratnasari, Hesti Hidayat, Bachtari Alam Hilda Zulkifli Indah Hamida Iqlima Amelia Irfannuddin Irfannuddin Izzati, Izzati Julinar Julinar Juswardi Juswardi Kasmiarti, Getari Kimur, Melviana Violetta Lamin, Safrina Leily Nurul Komariah Lilian Novarika M. B. Prayitno Maulana Yusuf Melly Oktaria Mgs. Irsan Saleh Mifthahul Jannah Muhammad Faizal Muhammad Faizal Muhammad Irsan Saleh Muhammad Ramdan Abdul Mannan Muhammad Said MUHAMMAD SAID Muhammad Said Muhammad Said Muhammad Said Muhammad Said Muhammad Said Muharni Muharni Muryati Muryati Mustafa Kamal Nabila Aprianti Nina Tanzerina Nirmalasary, Try Nensy Nita Aminasih Novia Novia Nur Hanis Hayati Hairom Nurlisa Hidayati Nurlisa Hidayati Purwitasari, Listiyani Putri Erlyn Rani Nawang Sari Ratu Wulandari Permatasari Putri Risfidian Mohadi Risfidian Mohadi Riski Dita Asmara Rizki Indah Putri Rizki, Widya Twiny Robert Sibarani, Robert Robiyanto Hendro Susanto Sabila Yunita Safira, Vika Putri Safitri, Bella Salni Salni Salni Salni Salni Salni Salni Salni Salni Salni Salni Salni Sari, Febrina Setiyawan, Bambang Dwi Shella Santika Damarril Singgih Tri Wardana Sisca, Vivi Siti Chodijah Siti Nuraini Sri Hartika Subroto Subroto Suheyanto Suheryanto Susila Arita Syafrina Lamin, Syafrina Vilantina, Vilantina Widia Purwaningrum Wiwin Sepriani Yogi Astrada Zainal Arifin Zazili Hanafiah Zulfikar Zulfikar