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<![CDATA[STUDI PENINGKATAN DAYA ADSORPSI KARBON AKTIF TERHADAP KADAR PEROKSIDA DENGAN PENAMBAHAN AKTIVATOR ]]>
<![CDATA[Irham, Wardatul Husna]]>
<![CDATA[ BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Vol 1, No 2 (2015): Februari ]]>
Publisher : <![CDATA[Program Studi Biologi, Fakultas Biologi Universitas Medan Area ]]>
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DOI: 10.31289/biolink.v1i2.724
<![CDATA[Activator that has been successfully used in the process of activation of activated carbon from coconut shell is Na2CO3, NaCl, HCl, H2SO4 and NaOH. The addition of activator in the activated charcoal will enlarge the surface area of the charcoal with open pores are closed, so as to increase the adsorption capacity of activated carbon. In the process of making activated carbon from coconut shell charcoal, carbon obtained randemen quite high, ranging from 80 to 81.74 wt% of carbon initially obtained with water content ranging from 2.2864 to 3.9489% and ash content of 2.04 to 3.28%. This means that the active carbon can be used as an activated carbon is good, because it meets the standards SII quality activated carbon. From the results obtained can be seen that the solution of HCl, NaOH and Na2CO3 can be used as an activator of activated carbon in the lower levels of peroxide. The addition of these activators can enlarge the surface area of the carbon that is by breaking the bonds of hydrocarbons or oxidizing surface molecules. Based on the research results, the best solution is used as an activator of activated carbon in adsorbing peroxide is an alkaline solution that is equal to 91.11% of the initial peroxide content.]]>
<![CDATA[STUDI PENINGKATAN DAYA ADSORPSI KARBON AKTIF TERHADAP KADAR PEROKSIDA DENGAN PENAMBAHAN AKTIVATOR ]]>
<![CDATA[Wardatul Husna Irham]]>
<![CDATA[ BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol 1, No 2 (2015): Februari ]]>
Publisher : <![CDATA[Universitas Medan Area ]]>
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DOI: 10.31289/biolink.v1i2.724
<![CDATA[Activator that has been successfully used in the process of activation of activated carbon from coconut shell is Na2CO3, NaCl, HCl, H2SO4 and NaOH. The addition of activator in the activated charcoal will enlarge the surface area of the charcoal with open pores are closed, so as to increase the adsorption capacity of activated carbon. In the process of making activated carbon from coconut shell charcoal, carbon obtained randemen quite high, ranging from 80 to 81.74 wt% of carbon initially obtained with water content ranging from 2.2864 to 3.9489% and ash content of 2.04 to 3.28%. This means that the active carbon can be used as an activated carbon is good, because it meets the standards SII quality activated carbon. From the results obtained can be seen that the solution of HCl, NaOH and Na2CO3 can be used as an activator of activated carbon in the lower levels of peroxide. The addition of these activators can enlarge the surface area of the carbon that is by breaking the bonds of hydrocarbons or oxidizing surface molecules. Based on the research results, the best solution is used as an activator of activated carbon in adsorbing peroxide is an alkaline solution that is equal to 91.11% of the initial peroxide content.]]>
<![CDATA[Thermal and physical properties of CNF/glutaraldehyde-gelatin-based hydrogel ]]>
<![CDATA[ROSLIANA LUBIS]]>;
<![CDATA[SRI WAHYUNA SARAGIH]]>;
<![CDATA[WARDATUL HUSNA IRHAM]]>;
<![CDATA[AJMAIN AJMAIN]]>;
<![CDATA[SAISA SAISA]]>
<![CDATA[ Jurnal Natural Volume 23 Number 1, February 2023 ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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DOI: 10.24815/jn.v23i1.29935
<![CDATA[The use of hydrogel as a wound dressing material is currently being massively developed. In addition to functioning to protect wounds, the use of hydrogel can also provide moisture in a measured manner and can be used as a drug delivery medium. In this study, hydrogel based on CNF and glutaraldehyde crosslinking agent and addition of gelatin were developed with various compositions 0.25; 0.5; 0.75 g to increase the ability of CNF and hydrogel to absorb water so that it is good to be applied as a wound dressing. The composting of the three materials aims to obtain a hydrogel with good thermal and physical properties. Based on physical character for a good ratio of swelling (666,62%) and degree of cross-linking (94%) on the hydrogel with a composition variation of 0.5 g of CNF addition. For the thermal stability of hydrogel var 2, TMax 591oC provides better thermal stability than var 1 and var 3. The morphology of hydrogel shows very small and evenly distributed pores on the surface which can absorb more water.]]>
<![CDATA[Thermal and physical properties of CNF/glutaraldehyde-gelatin-based hydrogel ]]>
<![CDATA[ROSLIANA LUBIS]]>;
<![CDATA[SRI WAHYUNA SARAGIH]]>;
<![CDATA[WARDATUL HUSNA IRHAM]]>;
<![CDATA[AJMAIN AJMAIN]]>;
<![CDATA[SAISA SAISA]]>
<![CDATA[ Jurnal Natural Volume 23 Number 1, February 2023 ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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DOI: 10.24815/jn.v23i1.29935
<![CDATA[The use of hydrogel as a wound dressing material is currently being massively developed. In addition to functioning to protect wounds, the use of hydrogel can also provide moisture in a measured manner and can be used as a drug delivery medium. In this study, hydrogel based on CNF and glutaraldehyde crosslinking agent and addition of gelatin were developed with various compositions 0.25; 0.5; 0.75 g to increase the ability of CNF and hydrogel to absorb water so that it is good to be applied as a wound dressing. The composting of the three materials aims to obtain a hydrogel with good thermal and physical properties. Based on physical character for a good ratio of swelling (666,62%) and degree of cross-linking (94%) on the hydrogel with a composition variation of 0.5 g of CNF addition. For the thermal stability of hydrogel var 2, TMax 591oC provides better thermal stability than var 1 and var 3. The morphology of hydrogel shows very small and evenly distributed pores on the surface which can absorb more water.]]>
<![CDATA[STRATEGI PENANGANAN BERCAK DAUN CURVULARIA SP. PADA PEMBIBITAN KELAPA SAWIT DI INDONESIA ]]>
<![CDATA[Irham, Wardatul Husna]]>;
<![CDATA[Saragih, Sri Wahyuna]]>;
<![CDATA[Febrianto, Eka Bobby]]>;
<![CDATA[Yazid, Abu]]>;
<![CDATA[Haholongan, Rahmat]]>;
<![CDATA[Maulana, Andre]]>;
<![CDATA[Damanik, Riski]]>
<![CDATA[ Agro Estate Vol 7 No 2 (2023): Desember 2023 ]]>
Publisher : <![CDATA[Institut Teknologi Sawit Indonesia ]]>
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DOI: 10.47199/jae.v7i2.201
<![CDATA[Oil palm (Elaeis guineensis Jacq) is one of the plantation crops that produces vegetable oil which has become the main ingredient and leading agricultural commodity in Indonesia. The quality of oil palm seedlings is a disease attack during the seedling stage. The most common disease found in oil palm nurseries is leaf spot disease. The aim of this research is to propose strategies for handling leaf spot in oil palm nurseries in Indonesia. This research is a literature study research. The data used comes from secondary data. Data collection methods use textbooks, journals and periodical. Data analysis is carried out by reading, collecting, citing information, concluding and interpreting the results obtained through relevant study materials. The results obtained that there are several strategies that can be used to treat leaf spot in oil palm nurseries in Indonesia, i.e. by carrying out photon energy irradiation which can increase plant resistance to various types of pathogens, developing organic fertilizer formulations and using biocontrol agent which is expected to help oil palm nurseries in suppressing leaf spot disease, using fungicides to prevent resistance, taking preventive measures to reduce the risk of spot disease on oil palm leaves, carrying out conservation fertilization using S2 (385 mesh), S3 (638 mesh), and S4 (644 mesh) sachets and applying liquid smoke areca nut in suppressing the growth of Curvularia sp.]]>
<![CDATA[STRATEGI PENANGANAN BERCAK DAUN CURVULARIA SP. PADA PEMBIBITAN KELAPA SAWIT DI INDONESIA ]]>
<![CDATA[Irham, Wardatul Husna]]>;
<![CDATA[Saragih, Sri Wahyuna]]>;
<![CDATA[Febrianto, Eka Bobby]]>;
<![CDATA[Yazid, Abu]]>;
<![CDATA[Haholongan, Rahmat]]>;
<![CDATA[Maulana, Andre]]>;
<![CDATA[Damanik, Riski]]>
<![CDATA[ Agro Estate Vol 7 No 2 (2023): Desember 2023 ]]>
Publisher : <![CDATA[Institut Teknologi Sawit Indonesia ]]>
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DOI: 10.47199/jae.v7i2.201
<![CDATA[Oil palm (Elaeis guineensis Jacq) is one of the plantation crops that produces vegetable oil which has become the main ingredient and leading agricultural commodity in Indonesia. The quality of oil palm seedlings is a disease attack during the seedling stage. The most common disease found in oil palm nurseries is leaf spot disease. The aim of this research is to propose strategies for handling leaf spot in oil palm nurseries in Indonesia. This research is a literature study research. The data used comes from secondary data. Data collection methods use textbooks, journals and periodical. Data analysis is carried out by reading, collecting, citing information, concluding and interpreting the results obtained through relevant study materials. The results obtained that there are several strategies that can be used to treat leaf spot in oil palm nurseries in Indonesia, i.e. by carrying out photon energy irradiation which can increase plant resistance to various types of pathogens, developing organic fertilizer formulations and using biocontrol agent which is expected to help oil palm nurseries in suppressing leaf spot disease, using fungicides to prevent resistance, taking preventive measures to reduce the risk of spot disease on oil palm leaves, carrying out conservation fertilization using S2 (385 mesh), S3 (638 mesh), and S4 (644 mesh) sachets and applying liquid smoke areca nut in suppressing the growth of Curvularia sp.]]>
<![CDATA[REVIEW: ANALYSIS OF FERTILIZER USE ON PALM HARVEST RESULTS ]]>
<![CDATA[Irham, Wardatul Husna]]>;
<![CDATA[Friska Anggraini Barus]]>;
<![CDATA[Marzuti Isra]]>;
<![CDATA[Sri Wahyuna Saragih]]>;
<![CDATA[Andrew Ivanovic Purba]]>
<![CDATA[ Agro Estate Vol 8 No 2 (2024): Desember 2024 ]]>
Publisher : <![CDATA[Institut Teknologi Sawit Indonesia ]]>
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DOI: 10.47199/jae.v8i2.276
<![CDATA[Literature research has been carried out on the use of fertilizer on oil palm plants with several types of fertilizer. The aim of this research is to see the effect of several types of fertilizer on palm oil yields. The method used in this research is a literature review. Research results show that the fertilizers often used are chicken manure, goat manure, compost and cow urine. Providing animal manure fertilizer at doses of 0, 50, and 100 g/polybag had the same effect on the development of the upper seedlings, while a dose of 50 g/polybag had the best effect on the development of the lower seedlings. Fertilizer greatly influences the level of soil fertility, thereby increasing the number of leaves, the health of palm stems and palm harvest yields.]]>
<![CDATA[Penggunaan Vaksinasi Covid-19 Sinovac Dan Moderna Di Desa Lubuk Damar Kecamatan Seruway ]]>
<![CDATA[Irham, Wardatul Husna]]>
<![CDATA[ Jurnal Kimia dan Ilmu Lingkungan: Chemviro Vol. 2 No. 1 (2024): Vol. 2 No. 1 (2024) ]]>
Publisher : <![CDATA[Universitas Bojonegoro ]]>
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DOI: 10.56071/chemviro.v2i1.716
<![CDATA[Telah dilakukan penelitian penggunaan vaksinasi. Penelitian ini bertujuan untuk melihat efek samping penggunaan vaksinasi Covid-19 Sinovac dan Moderna di Desa Lubuk Damar Kecamatan Seruway. Metode yang digunakan dalam penelitian ini adalah metode deskriptif. Data diperoleh berupa gambaran yang menjelaskan fenomena individual atau karakteristik individual secara akurat. Hasil yang diperoleh menjelaskan bahwa responden yang mengalami efek samping penggunaan vaksinasi Covid-19 Sinovac dan Moderna di Desa Lubuk Damar Kecamatan Seruway banyak yang mengalami efek samping lokal dan sistemik. Responden yang mendapatkan vaksinasi Covid-19 Sinovac lebih banyak mengalami efek samping lokal, yaitu sebesar 73,5 % dan mengalami efek sistemik sebesar 26,5 %. Responden yang mendapatkan vaksinasi Covid-19 Moderna lebih banyak mengalami efek samping sistemik, yaitu sebesar 58,4 % dan mengalami efek lokal sebesar 41,6 %. Penelitian ini memberikan kesimpulan bahwa penggunaan vaksinasi Covid-19 Sinovac dan Moderna secara umum di Desa Lubuk Damar Kecamatan Seruway lebih banyak memberikan efek samping lokal dari pada efek samping sistemik. Efek samping yang terjadi menandakan bahwa vaksinasi Covid-19 Sinovac dan Moderna bekerja secara efektif terhadap tubuh dan mengaktifkan antibodi tubuh dalam melawan virus Covid-19.]]>
<![CDATA[INVENTARISASI GULMA DI KEBUN BAH BIRUNG ULU PT. PERKEBUNAN NUSANTARA IV REGIONAL II: WEED INVENTORY IN BAH BIRUNG ULU GARDEN PT. PERKEBUNAN NUSANTARA IV REGION II ]]>
<![CDATA[Nurliana]]>;
<![CDATA[Irham, Wardatul Husna]]>;
<![CDATA[Latif, Abdul]]>
<![CDATA[ Agro Estate Vol 9 No 1 (2025): Juni 2025 ]]>
Publisher : <![CDATA[Institut Teknologi Sawit Indonesia ]]>
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<![CDATA[Weeds are nuisance plants that compete with the main crop, namely oil palm plants, in absorbing nutrients. If not controlled, the presence of weeds can cause a decrease in oil palm plant productivity. Inventory of dominant weeds in the highlands facilitates weed control at an altitude of 600-1000 meters above sea level (MDPL). The study was conducted at PT. Perkebunan Nusantara IV Kebun Bah Birung Ulu in Afdeling I, the research time started in February to March 2025. This study used a quantitative descriptive method with a direct weed identification method. The weed identification study in the highlands was at an altitude of 950 masl. The parameters observed were weed grouping, obtaining the Summed Dominance Ratio and the Important Value Index. From the results of the observations, it can be concluded that there are 12 types of weeds with the highest INP of 87%, namely Murdannia Nudiflora. The Summed Dominance Ratio analysis shows that Murdannia nudiflora has the highest dominance, while Spermacoce Ocymifolia has the lowest dominance.]]>
<![CDATA[Reaksi Tanah Akibat Perbedaan Perlakuan Lingkungan ]]>
<![CDATA[Irham, Wardatul Husna]]>;
<![CDATA[Saragih, Sri Wahyuna]]>;
<![CDATA[Parinduri, Sulthon]]>;
<![CDATA[Sitepu, Maichal Timoty]]>;
<![CDATA[Tua, Siswo Nelson Purba]]>
<![CDATA[ Tabela Jurnal Pertanian Berkelanjutan Vol. 2 No. 1 (2024): Edisi Januari ]]>
Publisher : <![CDATA[Ilmu Bersama Center ]]>
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DOI: 10.56211/tabela.v2i1.445
<![CDATA[Tanah merupakan salah satu media yang sangat penting bagi tumbuhan. Tanaman dapat tumbuh di beberapa tempat seperti di tanah gambut, tanah salin, dan tanah pasang surut yang mana tanah tersebut digolongkan sebagai lahan marginal yang memiliki karakteristik fisik dan kimia tanah yang secara langsung mempengaruhi tingkat kesuburan tanah. Tanah sebagai sumberdaya alam yang dipergunakan untuk kelangsungan hidup manusia, hewan maupun tumbuhan, tentu memberikan dampak terhadap kualitas tanah. Penggunaan tanah menjadi lahan pertanian, pemukiman maupun perkebunan tentu mendapatkan perlakuan yang berbeda-beda dari lingkungannya yang dalam hal ini dimungkinkan mempengaruhi reaksi tanah. Penelitian ini bertujuan untuk memberikan informasi reaksi tanah akibat perlakuan lingkungan yang berbeda. Penelitian ini merupakan penelitian deskriptif, reaksi tanah diamati dari pH tanah yang diambil dari dari beberapa lokasi. Metode pada penelitian ini meliputi pengumpulan sampel tanah dan penetapan pH tanah dengan cara elektrometri yang menggunakan alat pH meter. Hasil penelitian menunjukkan bahwa pH tanah vegetasi 6,2; pH tanah bakaran 7,8; pH tanah sawah 5,8; pH tanah organik 6,4; pH tanah pantai 6,2 dengan rentang kriteria pH sedang hingga tinggi dengan reaksi agak masam hingga agak alkalis.]]>
