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All Journal International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis 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 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 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 Bulletin of Chemical Reaction Engineering & Catalysis Analit: Analytical And Environmental Chemistry
Poedji Loekitowati Hariani
Department Of Chemistry, Universitas Sriwijaya
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Synthesis Of CoFe2O4 Nanoparticle and Antibacterial Activity Test Purwitasari, Listiyani; Hariani, Poedji Loekitowati; Sisca, Vivi
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 10, No 3 (2025): October 2025
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Cobalt ferrite (CoFe₂O₄) is a spinel ferrite-based material known for its excellent magnetic properties and chemical stability, making it as a promising candidate for biomedical applications as well as an antibacterial agent. This study aims to synthesize CoFe₂O₄ nanoparticles by a coprecipitation methode and evaluate their antibacterial activity against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria. The synthesized products were characterized by using several instruments includes X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), FTIR spectroscopy and Vibrating Sampel Magnetometer (VSM) in order to determine its crystal structure, particle morphology, functional groups, and magnetic properties. Antibacterial activity was assessed by using the disk diffusion method. The results showed that CoFe₂O₄ nanoparticles were successfully synthesized with nanometer-scale crystallite sizes and exhibited strong ferromagnetic properties. Antibacterial tests demonstrated inhibition zones against the growth of S. aureus and E. coli, indicating that CoFe₂O₄ has potential as an antibacterial agent. The effectiveness of antibacterial activity was influenced by nanoparticle concentration and the type of tested bacteria. This research opens up further opportunities for the development of CoFe₂O₄ applications in health and environmental fields.
PELATIHAN PEMBUATAN LULUR WAJAH DARI DAUN SIRSAK (Annona Muricata L) UNTUK MENDAPATKAN KULIT SEHAT DI DESA TANJUNG ATAP Hariani, Poedji Loekitowati; Fatma, Fatma; Said, Muhammad; Ahadito, Bijak Riyandi; Rohendi, Dedi
Jurnal Pepadu Vol 6 No 1 (2025): Jurnal Pepadu
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v6i1.6149

Abstract

Facial scrubs are a part of skin care that is often done by mothers and young women. In line with back to nature awareness, body scrubs use ingredients from natural sources. This community service activity aims to provide counseling and training on the importance of skin care and making facial scrubs from soursop leaves. Soursop leaves contain bioactive ingredients which are antioxidant and antibacterial. The activity was carried out in Tanjung Atap village, Tanjung Batu sub-district, Ogan Ilir district and was attended by 26 participants. The soursop plant is easy to find in the village growing in the yard. Activity participants play an active role in activities both in counseling and training. Evaluations are carried out before and after the activity to determine the level of participants' understanding of the counseling and training provided. Apart from that, an organoleptic test was carried out to determine the level of acceptance of the body scrub product. The results of the activity showed that there was an increase in public understanding of the importance of maintaining healthy skin and making body scrubs from soursop leaves. The increase in participants' understanding was 93.03% from not understanding or not understanding. The organoleptic test results showed that 85.36% of participants said they really liked it and 14.64% said they liked the facial scrub product made from soursop leaves. With this service activity, people are increasingly aware of the importance of skin care using natural resources. Scrubs made from natural ingredients are safe, cheap and avoid the side effects of chemicals.
CEMARAN MIKROPLASTIK PADA ORGAN PENCERNAAN IKAN BAUNG (Hemibagrus nemurus) DI PERAIRAN SUNGAI MUSI Aroef, Hukmanan Rais; Hariani, Poedji Loekitowati; Herpandi, Herpandi
Jurnal Ruaya : Jurnal Penelitian dan Kajian Ilmu Perikanan dan Kelautan Vol 12 No 2 (2024): Jurnal Ruaya : Jurnal Penelitian dan Kajian Ilmu Perikanan dan Kelautan
Publisher : UNIVERSITAS MUHAMMADIYAH PONTIANAK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/jr.v12i2.6707

Abstract

Aktivitas masyarakat disekitar Sungai Musi menjadikannya rentan akan kontaminasi libah termasuk plastik dan mikroplastik. Mikroplastik memiliki dampak akumulasi yang buruk terhadap kesehatan terutama apabila terkonsumsi oleh biota perairan seperti ikan. Salah satu ikan konsumsi yang biasa ditangkap di Sungai Musi adalah ikan baung (Hemibagrus nemurus). Penelitian ini mencoba memberikan gambaran seberapa jauh kontaminasi mikroplastik terhadap keberadaan ikan baung di Sungai Musi. Pengambilan sampel dilakukan pada dua titik lokasi pada sungai Musi yaitu Meriak, dan Mariana. Analisa dilakukan terhadap isi usus ikan baung dengan menghitung jumlah mikroplastik didalamnya, mengamati bentuk dan warnanya, serta menganalisis polimernya menggunakan FT-IR. Diperoleh hasil jumlah mikroplastik pada ikan baung di wilayah Meriak sekitar 14±18,7 partikel, sedangkan pada wilayah Mariana berkisar 28±18,5 partikel. Keberadaan mikroplastik dalam usus ikan memiliki keterkaitan dengan aktivitas makan dari ikan baung. Ikan baung dari Meriak cenderung menelan partikel mikroplastik berbentuk fragmen, sedangkan sampel dari Mariana banyak menelan mikroplastik berbentuk fiber. Analisis FT-IR memeberikan informasi bahwa jenis polimer mikroplastik dalam usus ikan baung adalah berupa polystyrene (PS), polypropylene (PP), high-density polyethylene (HDPE), low-density polyethylene (LDPE) dan nylon atau polyamida.
Effect of The Use of Diesel-Biodiesel on Air Emissions and Exhaust Gas Opacity of Mining Equipment in West Banko IUP - PT Bukit Asam Tbk Setiyawan, Bambang Dwi; Hariani, Poedji Loekitowati; Komariah, Leily Nurul
Sriwijaya Journal of Environment Vol 9, No 1 (2024): Environment and Suistainable Development
Publisher : Program Pascasarjana Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22135/sje.2024.9.1.44-53

Abstract

PT Bukit Asam Tbk has adopted the use of plant-based diesel oil in compliance with the rules established by the Minister of Energy and Mineral Resources No. 12 of 2015 from previously using fossil diesel. One of the decarbonization program's initiatives to reduce emissions is to replace the use of fossil fuels with biodiesel for all production equipment. To obtain results on the decrease or increase in the environmental quality of the use of fossil fuels and biodiesel, this research requires comparative data obtained from the results of ambient air quality, emissions, and opacity test. Based on research data in the years 2018 – 2022, the emission quality test was obtained with an average CO parameter of 550.83 mg/nm3, which exceeded the quality standard of 540 mg/nm3, SO2 parameter of 79.03 mg/nm3 from the quality standard of 900 mg/nm3. The NO2 parameter is 161.29b mg/nm3 from the quality standard of 1200 mg/nm3, with the quality standard parameters referring to thw Minister of Environment and Forestry Regulation No. 15 of 2019. Based on quantitative analysis approaches method and trend analysis obtained the emission results experienced an increase with trend line analysis but were still below the quality standards. The results at IUP Banko Barat for mobile equipment sources were obtained at 5.23% HSU, while for static equipment sources, they were obtained at 9.88% HSU from the quality standard of 40% based on South Sumatera Governor Regulation No. 06 of 2016. It can be concluded that the variance of fuel use for the 2018-2022 period has no significant effect on the air quality test emissions and opacity results because it is still below the quality standard.
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.  
GREEN SYNTHESIS OF FE3O4 NANOMAGNETICS WITH MATOA LEAF EXTRACT (Pometia pinnata) AND ANTI-BACTERIAL ACTIVITY TEST AGAINST Staphylococcus Aureus AND Escherichia Coli Hartika, Sri; Hariani, Poedji Loekitowati; Hermansyah, Hermansyah
Analit : Analytical and Environmental Chemistry Vol. 9, No. 01 April (2024) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/analit.v9i01.159

Abstract

The aim of this research is to synthesize nanomagnetic Fe3O4 using matoa (Pometia Pinnata) leaf extract and test its antibacterial properties against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). The resulting nanomagnets were characterized using a Vibrating Sample Magnetometer (VSM) to determine magnetic properties, phase type, and crystal size using X-ray diffraction (XRD), morphology, and element composition using Scanning Electron Dispersive X-ray Spectroscopy (SEM-EDX) and functional group using Fourier Transform Infra Red (FTIR). Furthermore, the Fe3O4 obtained was tested for antibacterial activity against Gram-Positive and Gram-negative bacteria, namely S. aureus and E. coli. Characterization results show that the average crystal size of Fe3O4 is 12.07 nm and has magnetic properties of 68.01 emu/g, morphology shows that it forms aggregates of unequal sizes. FTIR characterization results show the presence of -OH, -CH, C=C, H-C-H, C-O, and Fe-O groups. The results of the anti-bacterial Fe3O4 test were able to inhibit S. aureus and E. coli bacteria at a concentration of 5000 ppm with an inhibitory zone diameter of 11,0 mm and 10,5 mm respectively. These results show that the nanomagnetic compound Fe3O4 has antibacterial activity.  
GREEN SYNTHESIS NANOMAGNETIC MnFe2O4 USING BREADFRUIT LEAF EXTRACT (Artocarpus altilis) AND ANTI-BACTERIAL ACTIVITY TEST AGAINST E.Coli AND S. Aureus Safitri, Bella; Hariani, Poedji Loekitowati; Kusumawati, Heni Yohandini
Analit : Analytical and Environmental Chemistry Vol. 9, No. 01 April (2024) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/analit.v9i01.177

Abstract

In this research, breadfruit (Artocarpus Altilis) leaf extract has been used to synthesize nanomagnetic MnFe2O4. The resulting nanomagnetic characterization uses a Vibrating Sample Magnetometer (VSM) to determine magnetic properties, phase type and crystal size using analytical X-Ray Diffraction (XRD), morphology and element composition using Scanning Electron Dispersive X-ray Spectroscopy (SEM-EDX) and functional groups using Fourier Transform Infra Red (FTIR). MnFe2O4 obtained was tested for antibacterial activity against the gram-positive bacteria E. Coli and S.aureus. The result of the VSM characterization has magnetic property of 47.76 emu/g, the nanomagnetic XRD characterization was successfully synthesized with a peak appearing at an angle 2θ= 30.02 °, 35.28 °, 44.53 °, 56.65 °, dan 62.25 °, which corresponds to the crystal plane (220), (311), (400), (511) and (440)   showed an average crystal size of 25.85 nm, SEM results with various magnifications showed the formation of aggregates or chunks of unequal size, as well as the presence of Mn-O and Fe-O groups in FTIR analysis. This research showed that the nanomagnetic compound MnFe2O4 obtained from green synthesis has antibacterial properties against gram-positive bacteria E. Coli and S. aureus with a Minimum Inhibitory Capability (MIC) value of 2000 ppm. These results indicated that nanomagnetic compounds using the green synthesis method have the potential to be applied to gram-positive bacteria E.Coli and S.aureus.  
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%.
Co-Authors Abdullah Abdullah Addy Rachmat Addy Rachmat Ahmad Fatoni Ahmad Fatoni Ahyati Fadilah Aldes Lesbani Aldi Herbanu Amallia, RA Hoetary Tirta Amri, Nanda Hasanul Annisa Filantropie Aria Septi Handayani Aroef, Hukmanan Rais Asia Asia Afriyani Astri Nurmayansih Bijak Riyandi Ahadito Damayanti Damayanti Dedi Rohendi Denada, Laellia Desneli Desneli Desnelli Desnelli Eddy Ibrahim Elfita Elfita Elfita Elfita Endri Junaidi Evi Yuliana, Evi Fahma Riyanti Fatma Fatma Febrina Sari Ferlinahayati Ferlinahayati Handayani Citra Pratiwi Hanifa, Hanifa Marisa Harmida Harmida Hasanudin Hasanudin Heni Oktaviani Heni Yohandini 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 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 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 Vilantina, Vilantina Widia Purwaningrum Wiwin Sepriani Yogi Astrada Zainal Arifin Zazili Hanafiah Zulfikar Zulfikar