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All Journal Jurnal Kimia Mulawarman Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat JURNAL PHOTON JOURNAL OF CHEMICAL NATURAL RESOURCES (JCNaR)
Zul Alfian
Program Studi Kimia, FMIPA, Universitas Sumatera Utara ,Medan.
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Nursing Physics Social Sciences

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PEMANFAATAN KULIT UBI KAYU MENJADI KERUPUK DAN PENENTUAN KADAR NUTRIENNYA -, Yusbarina; Nst, Rumondang Bulan; Alfian, Zul
Sistem Informasi Vol 2 No 2 (2012): Jurnal Photon
Publisher : Fakultas MIPA dan Kesehatan Universitas Muhammadiyah Riau

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Abstract

Industri rumah tangga keripik ubi kayu Sanjai di Medan bahan bakunya 10 ton perhari dan 30% dari bahan baku tersebut dibuang yaitu kulitnya. Penelitian ini bertujuan untuk mengetahui berapa kadar HCN dalam kulit ubi kayu, bagaimana cara mengolah kulit ubi kayu menjadi kerupuk, berapa kadar nutrien (karbohidrat, protein, lemak, air dan abu), serta hasil uji organoleptik kerupuk. Hasil penelitian menunjukkan kadar HCN kulit ubi kayu: 22,14 mg/kg. Hal ini menunjukkan bahwa kulit ubi kayu aman untuk diolah menjadi bahan makanan. Kerupuk dibuat dengan mengolah kulit ubi kayu dengan tepung tapioka dengan perbandingan 1:2. Kadar karbohidrat, protein, air, abu, dan lemak kerupuk secara berturut –turut yaitu 82,90; 1,10; 13,00; 2,09; dan 0,10%. Hasil uji organoleptik menunjukkan skala 3 (suka).
STUDI PENGGUNAAN KITOSAN KOMPOSIT CuO SEBAGAI ADSORBEN UNTUK MENYERAP LOGAM BESI (Fe) MANGAN (Mn) DAN SENG (Zn) PADA AIR SUNGAI BELAWAN Mutia Khairuni; Zul Alfian; Harry Agusnar
JURNAL KIMIA MULAWARMAN Vol 14 No 2 (2017)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The synthesis of chitosan-CuO composite and its application as an adsorbent in the removal of Fe, Mn, and Zn in Belawan river water has been conducted. Chitosan-CuO composite is synthesized by addition the Cu(NO3)2 into the solution of chitosan and NaOH 2M. This adsorbent is characterized with FT-IR and its capability to adsorb heavy metals is measured with ICP-OES. The preliminary result of Fe, Mn, and Zn level in Belawan river water are 0,3032; 0,3251; and 0,06402 mg/L, respectively, those value levels are above the PP No. 82 Tahun 2004 safety limit. The optimum contact time of adsorbent to interact is found at 30 minutes, with Fe, Mn, and Zn adsorption is 69,71; 90,53; and 92,05%, respectively. The decrease of heavy metal levels in Belawan river water is influenced by the contact time of adsorbent to the sources of heavy metal.
Efficiency of Reverse Osmosis Usage in Drinking Water Depots to Reduce Iron (Fe3+), Copper (Cu2+) and Zinc (Zn2+) Ion Levels Alfian, Zul; Siahaan, M. Arifin; Agusnar, Harry
Journal of Chemical Natural Resources Vol. 6 No. 2 (2024): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v6i2.18374

Abstract

Research on the efficiency of reverse-osmosis drinking water depot to decreased levels of iron (Fe3+), Copper (Cu2+) and Zinc (Zn2+) ions have been done. The raw, the treated, and waste water are filtered using reverse osmosis (RO) three times a week. HNO3 then was added to the sample until it reached 15 mL. The determination of the concentration of the three ions was performed using atomic absorption spectrophotometer (AAS). The results showed a decrease  of Fe3+ concentration of 73.21%, for Cu2+ decrease by 80.25%, while Zn2+ decrease by 82.08%. For waste water obtained iron ion concentration of 0.1794 mg/L, for Cu2+ by 0.0239 mg/L, while Zn2+ by 0.0962 mg/L.
Determination of Metal Cadmium (Cd), Copper (Cu), Iron (Fe) and Zinc (Zn) in Drinking Water from The Boring Well of Surbakti Village, Karo District by Atomic Absorption Spectrophotometry Method Alfian, Zul; Lubis, Ria Ardianti; Agusnar, Harry
Journal of Chemical Natural Resources Vol. 6 No. 2 (2024): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v6i2.18394

Abstract

Water is an essential requirement for human existence. In addition to traditional water usage, water is essential for enhancing the quality of human existence and facilitating industrial and technological endeavors. An investigation was conducted on the contents of Cadmium (Cd), Copper (Cu), Iron (Fe), and Zinc (Zn) in drinking water from drilled wells in Surbakti Village, Karo District, employing Atomic Absorption Spectrophotometry (AAS) techniques. Sampling occurred during weeks 1, 2, 3, 4, and 5 and was subsequently digested with concentrated nitric acid until a volume of 15 mL was attained. The metal concentrations of Cd, Cu, Fe, and Zn were quantified using Atomic Absorption Spectroscopy (AAS) using a calibration curve. The findings indicated a concentration of Cd at 0.0031 mg/L, Cu at 0.0470 mg/L, Fe at 0.2741 mg/L, and Zn at 0.2929 mg/L. In this instance, Cd produced a greater concentration of drinking water standards compared to Cu, Fe, and Zn. Nonetheless, it nonetheless met the drinking quality standards established by Regulation Minister of Health No. 492/Menkes/Per/VII/2010.  
Analysis of River Water Quality in Medan Belawan Regency based on the Diversity Index of Aquatic Insects as an Effort to Improve the Health of River Ecosystems from Heavy Metal Contamination (Ni) Taufik, Muhammad; Situmorang, Helen Gandaria; Alfian, Zul
Journal of Chemical Natural Resources Vol. 7 No. 1 (2025): Journal of Chemical Natural Resources (JCNaR)
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v7i1.19478

Abstract

Heavy metals are often found in river water polluted by industrial processes. To separate heavy metals from river water, blood clam shells (Anadara granosa) are used as adsorbents. This study aims to analyze the determination of Belawan river water pollution based on the Aquatic Insect Diversity Index and analyze the content of heavy metal (Ni) in waste by utilizing blood clam shell waste as an adsorbent. The method used is solid phase extraction. Based on the diversity index data, the condition of the Belawan River waters in the Control area is not polluted (H' 2.18), Settlement Area 1 is lightly polluted (H' 1.94), Settlement Area 2 is lightly polluted (H' 1.70), Industrial Area 1 is moderately polluted (H' 1.47), and Industrial Area 2 is lightly polluted (H' 1.7). The percentage of heavy metal (Ni) absorption in Residential Area 1, Residential Area 2, Industrial Area 1, and Industrial Area 2 were respectively 28.57%, 33.33%, 31.11%, and 34.38%. This shows that blood cockles (Anadara granosa) are able to absorb Ni metal up to 34.38%. Ni levels < 0.05 mg/L so it can still be used (PP No. 22 of 2021).
Application of Biopesticide from Eucalyptus grandis on Mortality of Fruit Flies (Bactrocera sp.) on Sweet Citrus (Citrus X Sinensis) Plants Taufik, Muhammad; Zuhra, Cut Fatimah; Cahyady, Boby; Hardiyanti, Rini; Ardilla, Desi; Razali, Mariany; Alfian, Zul
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 1 (2022): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1175.886 KB) | DOI: 10.32734/abdimastalenta.v7i1.6931

Abstract

The application of biopesticides is one of the safest alternatives to realize organic agriculture that does not cause harmful impacts to both consumers and the environment. This activity aims to apply biopesticides in eradicating fruit flies (Bactrocera sp.) on Sweet Orange (Citrus X Sinensis) plants. The partner location is the Bukit Rumah Sendi Farmers Group in Karo Regency. Eucalyptus grandis leaves were extracted using steam distillation then the concentration of 1,8 Sineol was determined using GCMS and the concentration was 52%. Eucalyptus oil was mixed with kerosene and detergent then determined the LC50 value in fruit flies and observed for 24, 48, 72, and 96 hours and produced an LC50 value of 35%. This shows that biopesticides are quite effective in eradicating fruit flies.
Analysis of Copper (Cu), Chromium (Cr), and Manganese (Mn) Levels from Liquid Waste of The Steel Industry with Atomic Absorption Spectrophotometry (AAS) Method Aini, Syarifah; Alfian, Zul; Agusnar, Harry
Journal of Chemical Natural Resources Vol. 3 No. 1 (2021): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (360.193 KB) | DOI: 10.32734/jcnar.v3i1.9338

Abstract

Liquid waste from the steel industry processing, washing machine, and kitchenware foundry contained the elements of copper (Cu), chromium (Cr), and manganese (Mn). The effluent samples were destructed using concentrated HNO3. Then determined the concentration of the elements copper (Cu), chromium (Cr), and manganese (Mn) using an Atomic Absorption Spectrophotometer with a calibration curve. The results obtained for the level of copper (Cu) on the sample inlet was 0.9714 mg/L to 0.9719 mg/L, and the sample outlet was 3.9990 mg/L to 4.0002 mg/L. Levels of the element chromium (Cr) on sample inlet was 0.0295 mg/L to 0.0297 mg/L, the sample outlet was 0.0399 mg/L to 0.0400 mg/L. Meanwhile, the level of manganese (Mn) in the sample inlet was 0.1269 mg/L to 0.1271 mg/L in a sample outlet was 2.9699 mg/L to 2.9701 mg/L. Then the steel industry wastewater for elemental copper (Cu) and manganese (Mn) exceeded the limits that have been instituted by the Minister of Environment Decree No. 51, 1995, regarding the Liquid Waste Quality Standard for Industrial Activity.
Fabrication and Characterization of Glucosamine Hydrochloride from Chitin of Horseshoe Crab Shell (Tachypleus gigas) Nasution, Aurora Khairani; Agusnar, Harry; Alfian, Zul
Journal of Chemical Natural Resources Vol. 3 No. 2 (2021): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v3i2.9350

Abstract

Preparation of glucosamine hydrochloride from the chitin of horseshoe crab shells using the chemical hydrolysis method has been done using HCl concentration variation ratios of 7%, 9%, 11%,14 % with a ratio of 9:1 (v/w) for 4 hours at a temperature of 90ºC. Determination of glucosamine hydrochloride characteristics was characterized using Fourier transform-infra red (FT-IR) spectroscopy, in which the characteristics of glucosamine hydrochloride obtained in the OH group of glucosamine hydrochloride were 3446 cm-1 (s), 3448 cm-1 (s), 3450 cm-1 (s), 3448 cm-1 (s), respectively. For NH group of glucosamine hydrochloride were 1557 cm-1 (s), 1559 cm-1 (s), 1556 cm-1 (s), 1560 cm-1 (s), respectively. For CN group of glucosamine hydrochloride were 1379 cm-1 (m), 1379 cm-1 (m), 1379 cm-1 (m), 1379 cm-1 (m), respectively. While the glycoside bond of glucosamine hydrochloride 1073 cm-1 (w), 1074 cm-1 (w), 1074 cm-1 (w), 1074 cm-1 (w), respectively. Determination of the concentration of glucosamine hydrochloride with Ultraviolet Spectrophotometer analysis at a maximum wavelength of 197 nm with a standard solution of N-acetyl glucosamine in a solution of phosphate acid 0.005%, in which obtained the concentration of glucosamine hydrochloride 7% = 33.67 ppm, 9% = 36.35 ppm, 11% = 40.16 ppm, 14% = 43.97 ppm.
Analysis of the Copper (Cu), Chromium (Cr), and Manganese (Mn) Levels from the Steel Industry Liquid Waste by Atomic Absorption Spectrophotometry Method Alfian, Zul; Aini, Syarifah; Agusnar, Harry
Journal of Chemical Natural Resources Vol. 4 No. 1 (2022): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v4i1.10502

Abstract

Liquid waste from the steel industry processing, washing machine, and kitchenware foundry that is disposed containing copper (Cu), chromium (Cr) and manganese (Mn) elements which is harmful to enviromental. The levels of elemental copper (Cu), chromium (Cr), and manganese (Mn) were analyzed using Atomic Absorption Spectrophotometry (AAS) method. The effluent samples were destructed with the addition of concentrated HNO3. Then determining of the concentration of the element copper (Cu), chromium (Cr) and manganese (Mn) using Atomic Absorption Spectrophotometer with a calibration curve. The obtained results for the levels of copper (Cu) on the inlet samples were 0.9714 mg/L - 0.9719 mg/L, the outlet samples were 3.9990 mg/L - 4.0002 mg/L. Hence, the levels of the element chromium (Cr) on inlet samples were 0.0295 mg/L - 0.0297 mg/L, the outlet samples were 0.0399 mg/L - 0.0400 mg/L and the levels of manganese (Mn) in the inlet samples were 0.1269 mg/L - 0.1271 mg/L in a outlet samples were 2.9699 mg/L - 2.9701 mg/L. Then the steel industry wastewater for elemental copper (Cu) and manganese (Mn) has exceeded the limits that have been instituted by the Minister of Environment Decree No. 51, 1995, about the Liquid Waste Quality Standard for Industrial Activity
Effectiveness of Activated Zeolite in Reducing Iron (Fe) and Zink (Zn) Metal Levels in Borehole Water Alfian, Zul; Siregar, Ronaldo Sensini
Journal of Chemical Natural Resources Vol. 5 No. 2 (2023): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v5i2.13793

Abstract

Research has been carried out on the adsorption of iron (Fe) and zinc (Zn) metal levels using activated zeolite with acid and base in healthy water. Characterization was carried out on activated zeolite using X-ray Fluorescence (XRF). Samples were taken from borehole water from Puji Mulyo area, Deli Serdang, and preserved with HNO3 until pH < 2, then digested. Determined the concentration of iron (Fe) and zinc (Zn) before and after the addition of activated zeolite by NaOH and HCl using an Atomic Absorption Spectrophotometer (AAS) with length-specific waves are 248.3 nm for iron (Fe) and 213.9 nm for zinc (Zn) metal. The results showed that the concentration of iron (Fe) and zinc (Zn) in the borehole water after the addition of activated zeolite decreased. Zeolite activated by NaOH absorbs iron (Fe) metal by 68.60% and absorbs zinc (Zn) metals by 37.91%. Meanwhile, Zeolite activated by HCl absorbs iron (Fe) by 42.37% and absorbs zinc (Zn) metal by 15.17%. This research shows that the effectiveness of percentage (%) decreasing the concentration of iron (Fe) and zinc (Zn) metal using activated zeolite with NaOH was more significant and more effective than activated zeolite with HCl.
Co-Authors Ashari, Uly Cahyady, Boby Cut Fatimah Zuhra Desi Ardilla Harry Agusnar Harry Agusnar Hutagalung, Valentina Lubis, Ria Ardianti MUHAMMAD TAUFIK Mutia Khairuni Nasution, Aurora Khairani Nst, Rumondang Bulan Razali, Mariany Rini Hardiyanti Rumondang Bulan Nst Siahaan, M. Arifin Silvia, Fristiwayuni Dara Siregar, Ronaldo Sensini Situmorang, Helen Gandaria Syarifah Aini Yusbarina -