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All Journal JURNAL KIMIA SAINS DAN APLIKASI Al-Kimia Jurnal Sains dan Edukasi Sains Jurnal Mandala Pengabdian Masyarakat Jurnal Pengabdian Kolaborasi dan Inovasi IPTEKS International Journal of Science Technology and Health Science and Technology: Jurnal Pengabdian Masyarakat Asian Journal of Environmental Research Advance Sustainable Science, Engineering and Technology (ASSET)
Muh. Edihar
Department Of Chemistry, Faculty Of Science Technology And Health, Institut Sains Teknologi Dan Kesehatan (ISTEK) ‘Aisyiyah Kendari, Kendari, 93116, Southeast Sulawesi|Institut Sains Teknologi Dan Kesehatan (ISTEK) ‘Aisyiyah Kendari|Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Photoelectrocatalytic Degradation of Organic Compound Congo Red Using TiO2/Ti Electrode Muh. Edihar; Kurnia Sri Yunita; Kaharuddin Kaharuddin
International Journal of Science Technology and Health Vol 1 No 1 (2023): Science Technology and Health
Publisher : LPPM ISTEK 'Aisyiyah Kendari

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Abstract

Abstract: In this study, we synthesized photobilized TiO2 on a Ti plate and tested its photoelectrocatalytic activity towards Congo Red. The background of this research is to develop an effective and environmentally friendly water treatment method. The main method used was the sol-gel synthesis of TiO2 prepared from titanium tetra isopropoxide as a complexing agent, followed by photobilization on a Ti plate. Material characterization was conducted using XRD technique, portable Potentiostat (e-DAQ), and UV-Vis DRS (Diffuse Reflectance Spectrophotometric) spectroscopy. The results of this research showed that the TiO2 synthesis produced Anatase crystal structure with particle size of 13–16 nm and a band gap of 3.20 eV. Furthermore, the photoelectrocatalysis test demonstrated that TiO2/Ti exhibited activity in degrading Congo Red. The main conclusion of this study is that the synthesis of TiO2/Ti using the Sol-Gel method and immobilization on a Ti plate can enhance the photodegradation efficiency towards Congo Red. This finding has significant implications in the development of more effective and environmentally friendly water treatment technologies.
Performance Test of Residu Powder Distillation from Fermentation Result Cocoa Fruits (Theobroma Cacao L.) as Adsorbent For Metal Ions (Cr3+, Fe3+, Pb2+) Kaharuddin Kaharuddin; Kurnia Sri Yunita; Muh. Edihar; Mawaddah Zaqinah Diah; Salniati Hade; Sapril Kartini
International Journal of Science Technology and Health Vol 2 No 1 (2024): Science, Technology and Health
Publisher : LPPM ISTEK 'Aisyiyah Kendari

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Research this which is used as an adsorbent powder obtained through hydrolysis, fermentation and distillation of cacao fruit skin. This study aims to determine the ability of the cacao fruit skin powder to adsorb metal ions chromium (Cr3+), iron (Fe3+) and Lead (Pb2+) with adsorbent mass variation. Adsorption is done on metal chromium (Cr3+), iron (Fe3+) and lead (Pb2+) with three variations of the adsorbent mass of 0.25, 0.50 and 0.75 grams. The results showed that the performance of cacao fruit skin powder the most effective to metal ions lead (Pb2+) with percent adsorption 97.70%, for metal ions iron (Fe3+) with percent adsorption 94.33%, and crom (Cr3+) metal ions with the percent adsorption was 89.71% with adsorbent mass of 0.75 grams.
WORKSHOP : KELUARGA TANGGUH PERUBAHAN IKLIM DAN BENCANA Dwi Yanti, Suci; Mustamin, Syaiful Bachri; Edihar, Muh
Science and Technology: Jurnal Pengabdian Masyarakat Vol. 1 No. 1 (2024): Maret
Publisher : CV. Science Tech Group

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69930/scitech.v1i1.4

Abstract

Keluarga sebagai unit terkecil dalam suatu masyarakat memiliki peran penting dalam menghadapi perubahan iklim dan bencana alam. Dalam beberapa dekade terakhir, perubahan iklim telah menjadi isu global yang mendesak, memberikan dampak yang serius terhadap lingkungan dan kehidupan manusia. Perubahan iklim melibatkan perubahan suhu, pola cuaca ekstrem, dan tingkat intensitas bencana alam yang semakin tinggi. Tujuan dari pengabdian "Keluarga Tangguh Perubahan Iklim dan Bencana" memiliki tujuan untuk memberikan pemahaman lebih mendalam tentang bagaimana keluarga dapat menjadi basis ketahanan masyarakat dalam menghadapi tantangan global ini. Dengan demikian, pemahaman lebih mendalam tentang peran keluarga dalam konteks ini dapat menjadi landasan untuk mengembangkan strategi yang lebih efektif dalam meningkatkan ketahanan masyarakat secara keseluruhan.
Photocatalytic Degradation of Lignin using TiO2 from Ilmenite Prepared by Microwave Method Irwan, Irwan; Maindi, Andri Jahir; Edihar, Muh; Nurdin, Muhammad; Salim, La Ode Agus
Asian Journal of Environmental Research Vol. 1 No. 1 (2024): January-April
Publisher : CV. Science Tech Group

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69930/ajer.v1i1.7

Abstract

This study investigates the photocatalytic degradation of lignin using TiO2 extracted from ilmenite through a microwave-assisted method. Characterization of the iron sand, which serves as the source of ilmenite, was conducted using X-ray fluorescence spectroscopy (XRF) and Energy Dispersive X-ray Spectroscopy (EDX). The XRF analysis revealed that the iron sand primarily consists of Fe and TiO2, with minor impurities such as Al2O3, MgO, and SiO2. After extraction, the iron mineral content increased significantly, while impurities decreased. EDX analysis confirmed the presence of Fe, O, and Ti elements in the iron sand sample, originating from various iron oxide phases. Subsequent degradation tests on lignin with varying microwave heating durations of ilmenite showed that a 90-minute heating duration achieved the highest lignin degradation percentage of 56.69%. This suggests that the optimum heating time for ilmenite is crucial for maximizing its photocatalytic activity. Overall, the findings highlight the potential of microwave-prepared TiO2 from ilmenite for efficient lignin degradation, with implications for environmental remediation and industrial applications.
Exploring Carbon-Based Derivative Electrodes for Voltammetric Detection of Profenofos Pesticide in Environment: A Review Edihar, Muh; Zulkarnaen, Muhammad Aryo; Salim, La Ode Agus
Asian Journal of Environmental Research Vol. 1 No. 1 (2024): January-April
Publisher : CV. Science Tech Group

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69930/ajer.v1i1.17

Abstract

Detection and monitoring of pesticide residues in the environment have become crucial due to their potential adverse effects on human health and ecosystems. Among these pesticides, Profenofos has garnered primary attention due to its widespread usage and persistence in agricultural practices. Voltammetric techniques offer a promising approach for sensitive and selective detection of Profenofos, with carbon-based derivative electrodes emerging as highly promising candidates. This review critically examines recent advancements in the utilization of carbon derivative electrodes for Profenofos detection via voltammetry. It explores the fundamental principles, fabrication methods, and performance characteristics of these electrodes, highlighting their strengths and limitations. Additionally, the review discusses strategies for enhancing the sensitivity, selectivity, and stability of carbon derivative electrodes, as well as their potential application in environmental monitoring and agricultural practices. Through a comprehensive synthesis of recent research findings, this review aims to provide valuable insights into the current status, challenges, and future directions in the field of Profenofos pesticide detection using carbon derivative electrodes and voltammetric techniques.
Photoelectrocatalysis Activity TiO2/Ti electrode doped with N and Ni deposition for Congo Red Degradation Edihar, Muh; Irwan, Irwan; Lidong, Andini
Asian Journal of Environmental Research Vol. 1 No. 1 (2024): January-April
Publisher : CV. Science Tech Group

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69930/ajer.v1i1.19

Abstract

The TiO2/Ti electrode was successfully synthesized by combining element N and metal Ni on the TiO2 matrix to degrade the organic compound Congo Red under UV-visible radiation. The aim of this study is to obtain Ni@N-TiO2/Ti electrodes and test their performance in degrading Congo Red dye under UV-visible light radiation. The Ni@N-TiO2/Ti electrode was prepared using the Sol-Gel and electrodeposition methods. The presence of nitrogen in N-TiO2 is determined by FTIR and detected at a wavelength of 1.064 cm1. The analysis of UV-Vis DRS indicates an energy gap of 3.06 eV for N-TiO. XRD analysis revealed anatase crystal structure formation and nickel's presence in the Ni@N-TiO2/Ti electrode detected at 2θ 52.8°. The usage characteristics of linear sweep voltammetry indicate that the TiO2/Ti electrode is active under UV light, while the Ni@N-TiO2/Ti electrode is active under visible light. An electrode activity test using the multi-pulse amperometry method showed that the photoelectrocatalysis performance of Ni@N-TiO2/Ti under visible light radiation reached an ideal degradation rate of 36%.
Pelatihan Pembuatan Virgin Coconut Oil (VCO) dengan Metode Tanpa Pemanasan pada Masyarakat Pesisir Puu Lawulo Kabupaten Kolaka Maulidiyah, Maulidiyah; Nurdin, Muhammad; Rismiati, Rismiati; Irwan, Irwan; Edihar, Muh; Arham, Zul; Zakir Muzakkar, Muhammad
Jurnal Mandala Pengabdian Masyarakat Vol. 5 No. 2 (2024): Jurnal Mandala Pengabdian Masyarakat
Publisher : Progran Studi Farmasi Universitas Mandala Waluya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35311/jmpm.v5i2.413

Abstract

Virgin coconut oil (VCO) atau yang biasa dikenal dengan minyak kelapa murni adalah salah satu produk olahan dari buah kelapa. Kegiatan ini dilakukan karena masyarakat pesisir Puu Lawulo, Kecamatan Samaturu, Kabupaten Kolaka, mengalami keterbatasan pengetahuan dan keterampilan dalam mengolah buah kelapa secara optimal, sehingga nilai ekonomis buah kelapa belum termanfaatkan secara maksimal. Kegiatan ini bertujuan meningkatkan pengetahuan dan keterampilan masyarakat pesisir Puu Lawulo, Kecamatan Samaturu, Kabupaten Kolaka dalam mengolah buah kelapa menjadi VCO. Metode pelaksanaan yang digunakan dibagi dalam tiga tahapan penting, yaitu tahap sosialisasi, demontrasi dan evaluasi. Subyek penelitian adalah masyarakat pesisir Puu Lawulo yang mengikuti pelatihan pembuatan VCO. Dalam tahap sosialisasi, tim PKM melakukan penyuluhan kepada peserta kegiatan dengan menyampaikan materi dalam bentuk Powerpoint (PPT) terkait dengan cara pembuatan VCO dan manfaatnya dalam bidang kesehatan. Pada tahap demontrasi dijelaskan terkait langka-langkah pembuatan VCO dengan metode tanpa pemanasan. Tahap ketiga yaitu tahap evaluasi dilakukan untuk mengukur tingkat keberhasilan kegiatan yang telah dilakukan. Evaluasi dan peningkatan pengetahuan peserta kegiatan dilakukan melalui pre-test dan post-test. Hasil evaluasi setelah dilakukan post-test menunjukkan peningkatan yang signifikan dengan rata-rata skor mencapai 80-90%. Kegiatan ini menghasilkan produk berupa VCO yang dihasilkan dengan metode tanpa pemanasana. Luaran lainnya berupa kemampuan kelompok biru dalam membuat VCO secara mandiri.
Distribusi Beberapa Logam Transisi dan Logam Runutan di Wilayah Pertambangan Mandiodo Konawe Utara Sulawesi Tenggara Yashar, Aliyas; Alwahab, Alwahab; Edihar, Muh.; Alimin, Alimin; Zaeni, Ahmad
Jurnal Sains dan Edukasi Sains Vol. 8 No. 1 (2025): Jurnal Sains dan Edukasi Sains
Publisher : Faculty of Science and Mathematics, Universitas Kristen Satya Wacana, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/juses.v8i1p20-26

Abstract

Penelitian ini bertujuan untuk menganalisis sebaran unsur logam transisi dan logam runutannya di area pertambangan Mandiodo, Konawe Utara, Sulawesi Tenggara. Fokus utama penelitian ini adalah mengidentifikasi keberadaan serta konsentrasi unsur-unsur logam, yaitu Ni, Fe, Co, Cr2O3, dan MnO di wilayah tersebut. Berdasarkan hasil uji XRF, unsur Fe menunjukkan kadar yang lebih tinggi dibandingkan dengan unsur-unsur lainnya. Kadar tertinggi unsur Fe ditemukan pada sampel dengan kedalaman 0-1 m di lokasi tiga, yaitu sebesar 20,73%. Sementara itu, konsentrasi unsur Ni, Co, Cr2O3, dan MnO ditemukan pada nilai tertinggi di kedalaman dan lokasi yang berbeda. Kadar Ni tertinggi adalah 0,80% di lokasi satu pada kedalaman 7-8 m, Co tertinggi sebesar 0,05% di lokasi tiga pada kedalaman 3-4 m, Cr2O3 tertinggi 0,87% di lokasi dua pada kedalaman 7-8 m, dan MnO tertinggi 0,58% di lokasi satu pada kedalaman 3-4 m. Hasil penelitian menunjukkan bahwa wilayah pertambangan Mandiodo menyimpan potensi besar dalam kandungan mineral logam, seperti Ni, Fe, Co, Cr₂O₃, dan MnO, yang bernilai ekonomi tinggi. Dengan cadangan yang melimpah, wilayah ini dapat dimanfaatkan secara optimal untuk kegiatan pertambangan yang efisien. Potensi ini memberikan peluang strategis dalam mendukung kemajuan sektor industri, mendorong pertumbuhan perekonomian daerah, menciptakan lapangan kerja, serta berkontribusi secara signifikan terhadap pembangunan berkelanjutan yang inklusif.
Synthesis and Characterization Materials Modern (CMC-Fe3O4-Chitosan-TiO2) As Portable Adsorbent Toxic Metal (Hg) and Dye Substance (Rh B) Kaharuddin Kahar; Muh Edihar; Suhardin
Advance Sustainable Science Engineering and Technology Vol. 6 No. 3 (2024): May - July
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v6i3.709

Abstract

The synthesis of the portable adsorbent material CMC-Fe3O4-Chitosan-TiO2 begins by inserting the CMC-Chitosan mixture into the leaching solution. Next, concentrated NaOH and 3% CaCl2 were added, then decanted and dried at room temperature. After that, the composite was coated with TiO2 and then dried in an oven at a temperature below 100 oC. The success of the synthesis was indicated by the presence of specific absorption in FT-IR. 3429 cm-1 hydroxyl group, 2926 cm-1 for the CH/CH3 group, 1631 cm-1 for the carbonyl group (C=O), 1642 cm-1 which is the CH/CH3 group, as well as ) and ( at 400-600 cm-1. In addition, the different surface morphology of the material formed from its basic components is based on SEM characterization sails. Adsorption test results for Hg (II) metal ions were 53% while dyes were 38% with a time of 40 minutes. This research is good for handling watermaster
Performance Study of NiO-TiO₂-CuO Nanocomposite Supported by Reduced Graphene Oxide as an Anode Candidate for Lithium-Ion Battery Development Muh Edihar; Kaharuddin Kaharuddin; Muhammad Nurdin; Maulidiyah Maulidiyah; Thamrin Azis; Mawaddah Zaqinah Diah
Jurnal Kimia Sains dan Aplikasi Vol 28, No 2 (2025): Volume 28 Issue 2 Year 2025
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.28.2.73-81

Abstract

In an effort to enhance the performance of lithium-ion batteries (LIBs), this study developed a NiO-TiO2-CuO nanocomposite supported by reduced graphene oxide (rGO) as an anode material. The nanocomposite was synthesized via a hydrothermal method and characterized using FTIR, XRD, and SEM-EDX techniques to understand its structure and material properties. The FTIR spectrum confirmed the presence of C=C bonds (1612-1512 cm-1) and C–O bonds (1147-1099 cm-1) from rGO, as well as Ni-O (408 cm-1), Cu-O (669 cm-1), and Ti-O (549 cm-1). The XRD patterns revealed the crystalline phases of NiO at 2θ = 37° (111), 43° (200), and 62.8° (200); TiO2 at 2θ = 25.3° (101), 48° (101), and 55° (211); and Cu-O at 2θ = 35.6° (111) and 39.8° (022). SEM-EDX images showed small aggregated particles forming a relatively uneven surface with spherical morphology, with an average particle size of 33.25 nm. Electrochemical testing using cyclic voltammetry (CV) demonstrated that the material exhibited a stable specific capacity (Csp) of 6.3 mAh/g after five cycles at a scan rate of 1 V/s. Additionally, the specific capacity significantly increased to 44.15 mAh/g at a scan rate of 0.05 V/s, indicating excellent electrochemical performance. These results suggest that the NiO-TiO2-CuO/rGO nanocomposite has potential as an efficient anode material for lithium-ion battery applications, offering good cycle stability and enhanced energy storage capacity.
Co-Authors Ahmad Zaeni, Ahmad Alimin Alimin, Alimin Alwahab Alwahab Arham, Zul Dahlan Harleli, Harleli Irwan Irwan kahar, kaharuddin Kaharuddin Kahar Kaharuddin Kahar Kaharuddin Kaharuddin Kaharuddin Kaharuddin Kurnia Sri Yunita La Harimu Lidong, Andini Maindi, Andri Jahir Maulidiyah Maulidiyah Maulidiyah Maulidiyah Mawaddah Zaqinah Diah Mawaddah Zaqinah Diah Muhammad Nurdin Muhammad Nurdin Mustamin, Syaiful Bachri Mutmainnah Rismiati, Rismiati Salim, La Ode Agus Salniati Hade Sapril Kartini Suci Dwi Yanti Suhardin Thamrin Azis Yashar, Aliyas Zakir Muzakkar, Muhammad Zulkarnaen, Muhammad Aryo