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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
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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Effect of Silica Addition on Mechanical Properties of Eggshell-Derived Hydroxyapatite . Fatma; . Desnelli; Fahma Riyanti; Mustafa Kamal; Muhammad Ramdan Abdul Mannan; Poedji Loekitowati Hariani
Aceh International Journal of Science and Technology Vol 10, No 2 (2021): August 2021
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (473.096 KB) | DOI: 10.13170/aijst.10.2.21982

Abstract

Eggshell is a solid waste that is available in abundance but is being left unused. Eggshell containing calcium in a high amount. Calcium can be used as a precursor for hydroxyapatite (HAp). Modification of HAp with SiO2 is expected to improve its low mechanical properties for biomedical applications. In this study, HAp is synthesized from the eggshell. Then, it was modified by adding SiO2 utilizing the coprecipitation method with concentrations of 10%, 20%, 30%, and 40%, respectively. The HAp and HAp/SiO2 were characterized using; X-ray diffraction and Fourier transform infrared spectroscopy. The analysis HAp and HAp/SiO2 were density, compressive strength, and hardness. The best mechanical properties of HAp/SiO2 were characterized using SEM-EDS. The HAp were prepared successfully with a ratio of Ca/P was 1.673, close to the theoretical 1.67. The addition of SiO2 caused a decrease in crystallite size and density but increased compressive strength and hardness. The best mechanical properties of HAp/SiO2 were obtained with SiO2 of 30% and 40% with similar values.
Biokonsentrasi Faktor (BCF) dan Faktor Translokasi (TF) Purun tikus (Eleocharis dulcis) dalam Fitoremediasi Air Asam Tambang Ratu Wulandari Permatasari Putri; Poedji Loekitowati Hariani; Zainal Arifin
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 5 No. 1 (2023): JPPL, Maret 2023
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v5i1.1832

Abstract

Acid mine drainage is mining waste that contains a lot of sulfate and heavy metals such as Fe and Mn which can cause environmental damage and pollute the ecosystem, therefore it needs to be managed. One way to manage acid mine drainage is with phytoremediation techniques using Purun tikus (Eleocharis dulcis). The ability of Purun tikus to accumulate heavy metals can be known by calculating the bio-concentration factor (BCF) and tranclocation factor (TF). This study aims to determine the value of bio concentration factor (BCF) and tranclocation factor (TF) in rat purun in absorbing Fe and Mn so that it can be used for coal mine acid water management. Sampling was conducted using Convenience sampling method. Analysis of Fe, Mn, BCF and TF levels was carried out using an atomic absorption spectrophotometer. In the study, the bio concentration factor (BCF) value for Fe was 7.53, and for Mn was 30.09. While the value of the tranclocation factor (TF) for Fe is 0.77 or the value of TF less than 1, this indicates that rat Purun in accumulating Fe metal uses a phytostabilization mechanism. Then the tranclocation factor (TF) value for Mn is 1.44 or TF value more than 1, indicating that in accumulating Mn metal, Purun rats use a phytoextraction mechanism.
Performance Analysis of Ceramic Membranes in Clean Water Treatment on River Water Quality Yogi Astrada; Poedji Loekitowati Hariani; Muhammad Faizal
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 3 (2022): October 2022
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v7.i3.100

Abstract

The clean water treatment process changes the physical, chemical, and biological properties of water so that it meets the requirements for use as drinking water or daily needs. The purpose of this research is to analyze the performance of ceramic membranes in processing water from the Kelekar River into clean water using an environmentally friendly microfiltration–adsorption–ceramic membrane integrated process. The research was carried out from January to April 2022 at the Chemical Engineering Laboratory of the Sriwijaya Polytechnic. The sampling location for this research is Kelekar River, Karang Raja Village, East Prabumulih. The main tools and materials are a series of water filters (microfiltration–adsorption–ceramic membrane) and river water. The analysis results show that a series of microfiltration-adsorption-ceramic membrane integrated process water treatment equipment can be used to treat river water into clean water. Based on the analysis of river water quality parameters, such as BOD5, iron (Fe), manganese (Mn), nitrate (NO3-), ammonia (NH3-N), and total coliform bacteria after water treatment were within environmental quality standards. Meanwhile, COD and nitrite (NO2-) were still not meeting the environmental quality standards set by Government Regulation of Republic Indonesia No. 22 of 2021 concerning the implementation of environmental protection and management.
Preconcentration of Cr(III) Using Dowex 50WX2-200 Resin and Its Application to River Water Siti Nuraini; Suheryanto Suheryanto; Poedji Loekitowati Hariani
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.
Development of a Concentration Cell Potentiometric Method for Fe2+ and Fe3+ Speciation Izzati Izzati; Suheryanto Suheryanto; Poedji Loekitowati Hariani
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 Annisa Filantropie; Suheryanto Suheryanto; Poedji Loekitowati Hariani
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.
Natural Resources and Environment Management for the Development of Local Wisdom Yuliana, Evi; Yusuf, Maulana; Nirmalasary, Try Nensy; Amri, Nanda Hasanul; Erlyn, Putri; Hariani, Poedji Loekitowati; Hidayat, Bachtari Alam
Budapest International Research and Critics Institute-Journal (BIRCI-Journal) Vol 4, No 4 (2021): Budapest International Research and Critics Institute November
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birci.v4i4.2759

Abstract

Natural resources are environmental components that include biological and non-biological resources that work together to produce an ecosystem. Rivers are one of the natural resources that sustain life. Musi River is a 750-kilometer-long river in the Indonesian state of South Sumatra. Rivers are an integral aspect of the environment and natural resources that must be protected in order for humanity to survive. Natural resources have the potential to be a source of local wisdom development. The objective of this research is to gain an understanding of how natural resources and the environment are managed in order to foster the development of indigenous wisdom. The purpose of this study is to define and analyze the opportunities, challenges, strengths, and weaknesses associated with natural resource management and the development of indigenous knowledge in Palembang. Palembang's natural resources, particularly its rivers, have the potential to have a positive impact on the environment and the development of indigenous wisdom if managed optimally. Ecological awareness is critical for the people of Palembang in managing the potential of natural resources for the development of local knowledge, such as maintaining the river's purity and keeping the fauna that is a source of local wisdom.
The Use of Molasses in Producing Bioethanol Catalyzed by Candida tropicalis (Isolated from Cocos nucifera. L) Immobilized MnFe2O4 Coated-Chitosan Kasmiarti, Getari; Hermansyah, Hermansyah; Novia, Novia; Hariani, Poedji Loekitowati
Molekul Vol 19 No 1 (2024)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2024.19.1.10765

Abstract

Bioethanol is a sustainable fuel product to be an alternative energy source. Therefore, the study aims to observe and analyze the effect of MnFe2O4 coated-chitosan in increasing bioethanol production. This bioethanol was produced from molasses with a high total sugar content of up to 50% with Candida tropicalis as the microorganism. Fermentation is divided into two parts, namely using free C. tropicalis and C. tropicalis immobilized MnFe2O4 coated-chitosan. There was electrostatic interaction between MnFe2O4 and chitosan in 578 cm-1 and 659 cm-1 of FTIR, cubic spinel pattern in XRD, and SEM surface image of C. tropicalis immobilized MnFe2O4 coated-chitosan interaction. These characterization results show very good properties as a biocatalyst. The highest concentration was produced by fermentation using C. tropicalis immobilized MnFe2O4 coated-chitosan about 4.35% with residual sugar of 8.46 g/L. In summary C. tropicalis immobilized MnFe2O4 coated-chitosan have the potential to improve bioethanol products.
Pelatihan Pembuatan Salep Untuk Infeksi Kulit dari Ekstrak Daun Karamunting (Rhodomyrtus Tomentosa) Di Desa Tanjung Baru, Ogan Ilir Ferlinahayati, Ferlinahayati; Rachmat, Addy; Hermansyah, Hermansyah; Elfita, Elfita; Hariani, Poedji Loekitowati
Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Vol. 4 No. 1 (2024): Januari 2024 - 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.v4i1.518

Abstract

Kulit memiliki fungsi sebagai pertahanan pertama untuk melindungi tubuh dari penyakit. Infeksi kulit dapat disebabkan oleh mikroorganisme, seperti bakteri, virus, jamur, atau parasit. Tanaman karamunting (Rhodomyrtus tomentosa) secara tradisional telah digunakan masyarakat untuk pengobatan termasuk pengobatan luka. Kegiatan pengabdian masyarakat ini bertujuan memberikan pelatihan pembuatan salep untuk pengobatan infeksi kulit dari ekstrak etanol daun karamunting berbasis vaselin.  Kegiatan pengabdian masyarakat dilakukan di desa Tanjung Baru, kecamatan Indralaya Utara, kabupaten Ogan Ilir. Khalayak sasaran adalah ibu-ibu PKK dan remaja putri sebanyak 30 orang. Tahapan kegiatan yaitu (i) penyuluhan tentang penyakit infeksi kulit, penyebab infeksi kulit, penularan dan pengobatan, (ii) pelatihan pembuatan ekstrak etanol dari daun karamunting, pembuatan salep berbasis vaselin dan (iii) evaluasi hasil kegiatan. Hasil evaluasi kegiatan dengan memberikan berbagai pertanyaan setelah kegiatan menunjukkan 97,62 % peserta menjawab tepat dan sangat tepat materi yang diberikan. Hasil uji tingkat kesukaan dan kenyamanan penggunaan salep menunjukkan sebanyak 82,64 % peserta menyatakan sangat suka terhadap aroma, bentuk, warna, kenyamanan dan daya lekat ketika salep digunakan. Hal ini mengindikasikan bahwa salep untuk infeksi kulit ini diterima dengan baik oleh masyarakat sebagai alternatif pengobatan penyakit infeksi kulit.
Determination of mercury in soil and water from a gold mining area in Karang Jaya Sub-district, Musi Rawas Utara, Indonesia Amallia, Ra Hoetary Tirta; Ibrahim, Eddy; Irfannuddin, Irfannuddin; Hariani, Poedji Loekitowati
Journal of Degraded and Mining Lands Management Vol. 11 No. 2 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.112.5375

Abstract

The present study focuses on the assessment of Hg distribution in both soil and water samples from the small-scale gold mining region of Karang Jaya Sub-district, Musi Rawas Utara Regency, South Sumatra Province. For over 30 years, this region has witnessed persistent utilization of mercury as an amalgam for gold extraction. The investigation encompasses an analysis of total mercury levels in soil samples obtained from Sukamenang, Muara Batang Empu, and Terusan Villages. As a comparative reference point devoid of gold mining activities, the neighboring Muara Lakitan Village was selected. The obtained results indicate a moderate to strong contamination level across the 30 sampled locations based on the Geoaccumulation Index (Igeo), with an average Igeo value of 2.6. Furthermore, Pollution Load Index (PLI) and Contamination Factor (CF) values demonstrate high contamination. Conversely, analysis of river water samples from 30 stations along the Rupit River reveals that most of the samples comply with quality standards (<0.0005 mg/L), with an average value at 0.000322 mg/L; only four stations exhibit total Hg concentrations surpassing regulatory thresholds. All soil and river water samples from the control area (10 stations) exhibited no signs of pollution. Appropriate investments in technology, finance, and technical skills are needed to reduce mercury pollution due to small-scale gold mining activities.
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