Article Per Year (5 Year)
p-Index From 2021 - 2026
3.743
P-Index
This Author published in this journals
All Journal Prosiding Semnastek Jurnal Sains dan Teknologi Reaksi Jurnal Vokasi Jurnal Teknologi JURNAL HANDAYANI PGSD FIP UNIMED Jurnal Riset, Inovasi, Teknologi & Terapan
Halim Zaini, Halim
Politeknik Negeri Lhokseumawe
Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

Published : 40 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 40 Documents
Search

 1   2   3   4 
Removal of Artificial Rhodamine B Synthetic Dye Waste Using Magnetic Nanoparticle Adsorbents Irwan, Irwan; Mardani, Mardani; Sari, Husna; Safitri, Aida; Zaini, Halim
Jurnal Teknologi Vol 25, No 2 (2025): Agustus 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i2.7397

Abstract

The use of synthetic dyes as dyes is increasing so that the waste is polluting the environment. One of the dangerous wastes that damages the environment and causes health problems is rhodamine B dye. The removal of rhodamine B dye is carried out by adsorption using an adsorbent that has been modified to provide magnetic properties. The aim of the research is to synthesize magnetic adsorbent nanoparticles using the co-precipitation method and use them to reduce the concentration of rhodamine B dye in artificial wastewater at various time variations. The study shows that magnetic nanoparticle adsorbents were successfully synthesized using the precipitation method. The adsorbent particles provide a magnetic effect on external magnetic forces, which shows that the adsorbent nanoparticles are magnetic. The application of magnetic adsorbent nanoparticles showed that the longer the adsorption time, the percentage of rhodamine B dye removal increased. The highest removal was obtained at 86% at an adsorption time of 90 minutes and an adsorbent mass of 4 g.
Utilization of a Mixture of Peuyeumization Market Waste-Derived RDF (Refuse-Derived Fuel) and Coconut Shell Charcoal (CSC) into Bio-Briquettes with Coal-Calorific Value Elfiana, Elfiana; Intan, Syarifah Keumala; Ruhana, Ruhana; Rahmahwati, Cut Aja; Zaini, Halim
Jurnal Teknologi Vol 25, No 2 (2025): Agustus 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i2.6887

Abstract

The accumulation of market waste and coconut shells poses a significant environmental challenge, necessitating effective management strategies by both local governments and academic institutions. This study explores the conversion of organic market waste into Refuse-Derived Fuel (RDF) through a dry fermentation (peuyeumization) process using 5% EM4 bio-activator over a 21-day incubation period. Concurrently, coconut shells were carbonized to produce high-carbon Coconut Shell Charcoal (CSC). Both RDF and CSC, ground to a 100-mesh particle size, were utilized to produce cylindrical bio-briquettes (7 cm height, 3.6 cm outer diameter, 1.6 cm inner diameter) using a compaction method. Various RDF:CSC ratios (0:100, 25:75, 50:50, 75:25, and 100:0) were tested with three concentrations of tapioca starch adhesive (6%, 8%, and 10%). The quality of the resulting briquettes was evaluated based on the Indonesian National Standard (SNI 01-6235-2000), assessing parameters such as moisture content, ash content, density, fixed carbon content, and calorific value. Combustion characteristics were further examined through ignition time and combustion rate measurements. The optimal briquette was produced at a 25:75 RDF:CSC ratio with 6% adhesive, achieving a weight of 30 g, density of 0.46 g/mL, fixed carbon content of 75.51%, moisture content of 5.25%, ash content of 5.91%, calorific value of 6117.38 cal/g, ignition time of 63.78 minutes, and combustion rate of 1.55 g/min. These findings indicate that the bio-briquettes meet the calorific standard of young coal, supporting their potential use as an environmentally friendly alternative fuel.
STUDY EFEKTIFITAS PENYERAPAN Pb (II) DI DALAM AIR TERCEMAR PADA BIOADSORBEN KULIT KACANG TANAH DAN AMPAS TEBU Zaini, Halim
Jurnal Vokasi Vol 3, No 1 (2019): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (569.21 KB) | DOI: 10.30811/vokasi.v3i1.991

Abstract

Logam berat dalam air menimbulkan permasalahan yang serius bagi lingkungan. Usaha penanganannya telah banyak dilakukan dengan berbagai metoda. Metode yang relatif efektif, efisien, aman, ramah lingkungan adalah metode adsorpsi. Penelitian ini bertujuan untuk mempelajari keefektifan penyerapan pada bioadsorben kulit kacang tanah dan ampas tebu terhadap logam Pb (II) di dalam air limbah  dengan sistem kolom. Pada rancangan percobaan, variabel tetap terdiri dari berat bioadsorben 50 g, ukuran partikel 40 mesh dan volume adsorbat digunakan 10 liter, laju alir 4 liter/menit. Variabel bebas waktu kontak, jenis bioadsorben, dan perlakuan bioadsorben . Variasi waktu kontak (0;5;10; 15;20; 30; 60; 90; 120; 150; 180; 210; 240 menit), jenis bioadsorben(kulit kacang tanah dan ampas tebu), dan perlakuan adsorben (tanpa aktivasi, aktivasi fisik dan aktivasi kimia (H2SO4 1N dan NaOH 1N). Hasil penelitian menunjukan bahwa ketiga variabel bebas mempengaruhi daya serap logam Pb(II). Bioadsorben kulit kacang tanah menunjukkan lebih efektif untuk menyerap logam Pb (II) dibandingkan bioadsorben ampas tebu. Penggunaan bioadsorben kulit kacang tanah tanpa aktifasi bisa menurunkan kandungan logam Pb (II) 2,8 %, sedangkan bioadsorben dengan aktifasi H2SO4 mampu menurunkan kandungan logam Pb (II) sampai dengan 4,4%.  Kata kunci:   logam berat, adsorpsi, bioadsorben, kulit kacang tanahSTUDY EFEKTIFITAS PENYERAPAN Pb (II) DI DALAM AIR TERCEMAR PADA BIOADSORBEN KULIT KACANG TANAH DAN AMPAS TEBU
Pelatihan Pembuatan Pupuk Kalium Cair Dari Sabut Kelapa Untuk Pertumbuhan dan Perkembangan Tanaman Hortikultura di Desa Mesjid Punteut Kecamatan Blang Mangat Kota Lhokseumawe Zaini, Halim; Fachraniah, Fachraniah; Zaimahwati, Zaimahwati; Yunus, M.
Jurnal Vokasi Vol 2, No 1 (2018): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (757.358 KB) | DOI: 10.30811/vokasi.v2i1.672

Abstract

Penggunaan pupuk kimia dalam bidang pertanian dan perkebunan untuk peningkatan kesuburan tanah, kesuburan tanaman, dan pendapatan petani perlu pengkajian ulang. Pupuk kimia selain bermanfaat juga berdampak negatif dalam jangka lama, dimana pupuk kimia dapat merusak tekstur dan struktur tanah. Oleh karena itu, pemikiran kembali ke pertanian secara alamiah dengan memanfaatkan unsur hara yang tersedia dialam guna menjaga kesuburan tanah, menekan atau menghemat biaya produksi, menjadi suatu langkah yang peting. Tujuan dari kegiatan penerapan ipteks ini adalah; 1). Memberikan pelatihan dan keterampilan kepada para petani untuk membuat pupuk kalium cair dan 2). Penggunaan pupuk kalium cair untuk pertumbuhan dan perkembangan tanaman hortikultura seperti kelapa sawit, pinang, kelapa dan coklat. Metode kegiatan melalui pendekatan teoritis, diskusi,demontrasi dan aplikatif. Pada pelaksanaannya, karena keterbatasan dana, maka peserta dibagi dalam 2 kelompok kerja. Masing kelompok terdiri dari 3 orang dimana pembuatan pupuk kalium cair berbahan baku sabut cacah dan berbahan baku tanpa cacah. Kesimpulan kegiatan:1).Kegiatan penerapan ipteks berlangsung terarah, terukur dan sesuai dengan target. Setelah mengikuti kegiatan pembuatan pupuk kalium cair terjadi peningkatan kemampuan peserta rata-rata diatas 83% dan 2). Setelah mengikuti kegiatan ini peserta berkampuan membuat pupuk kalium cair secara mandiri dan dapat menggunakannya untuk bagi usaha pertanian dan perkebunan yang mereka usahakan. Dengan tersedianya pupuk kalium cair dapat memberikan peningkatan produksi pertanian serta berdampak positip bagi pendapatan mereka.Kata Kunci: pupuk kimia, pupuk kalium cair, pertanian, pendapatan
PRODUCTION OF CHLORINE GAS (Cl2) AND SODIUM HYDROXIDE (NaOH) FROM THE PURIFICATION OF ACEH SALT: A Review Article Ridwan, R; Zaini, Halim
Jurnal Sains dan Teknologi Reaksi Vol 22, No 02 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i02.6361

Abstract

ABSTRACT Jangka salt contains NaCl, CaCl₂, MgCl₂, CaSO₄, MgSO₄, Na₂SO₄, H₂O, dust, soil, and fine sand, with NaCl content of less than 78%, categorizing it as low-quality salt. This salt can be refined to increase its NaCl content to 92%-100% through gradual physical and chemical purification processes, as well as using ion-exchange resin, resulting in high-quality salt. One of the advantages of high-quality salt is its use as a raw material for producing chlorine gas and sodium hydroxide through the electrolysis process. The results can be used in various industries for water treatment, soap production, plastics, paper manufacturing, and other chemical industries.Keywords: Chlorine gas, sodium hydroxide, salt, purification, electrolysis.
TESTING CHEMICAL ZINC PHOSPHATE BASE AS A CORROSION INHIBITOR ON CARBON STEEL IN THE CORROSION MEDIA OF COOLING WATER, SEA WATER AND PDAM WATER Sariadi, S; Kenady, Rengga Rahmat; Irwan, I; Zaini, Halim
Jurnal Sains dan Teknologi Reaksi Vol 22, No 01 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i01.6329

Abstract

ABSTRACT Zinc phosphate base corrosion inhibitor which aims to determine the effectiveness of the inhibitor to provide protection to carbon steel against the rate of corrosion, with variations in inhibitor concentration at 0, 20, 40 and 60 ppm.This research uses the weight loss method and studies the performance of zinc phosphate base chemical inhibitors in the mediacooling water, sea water and PDAM waterThis is done by carrying out SEM (Scanning Electron Microscopy) testing. The type of steel specimen used in the research is Carbon Steel and deepCorrosion media are cooling water, sea water and PDAM water.The addition of zinc phosphate base carbon steel inhibitor is effective in reducing the corrosion rate of carbon steel in PDAM water and sea water. in sea water media without inhibitors, a drastic reduction in the corrosion rate was seen from 119.0457 mpy to 1.7754 mpy and in PDAM water media without inhibitors, a drastic decrease in the corrosion rate was seen from 18.5873 mpy to 3.4163 mpy, after adding inhibitors with a concentration of 60 ppm. The efficiency of the zinc phosphate base inhibitor in cooling water corrosion media was 30.262% at a concentration of 40 ppm and a soaking time of 20 days.Keywords : Inhibition efficiency, Corrosion Inhibitors, Corrosion in sea water, Corrosion in cooling water, Corrosion Rate, Zinc Phosphate base.
Production of Granular Potassium Fertilizer from Oil Palm Empty Fruit Bunch (EFB) Incineration Ash Erizal, Erizal; Irwan, Irwan; Zaini, Halim
Jurnal Teknologi Vol 25, No 3 (2025): Desember 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i3.7527

Abstract

The transformation of oil palm empty fruit bunch (EFB) incineration ash into granular potassium fertilizer offers a promising approach to recycling agro-industrial waste while producing value-added products. This study focuses on the formulation of EFB ash-based granules using tapioca starch as a natural binder, and examines the effects of binder weight and drying time on granule yield, pH, K₂O content, and moisture content. Tapioca starch was incorporated at five  different weight (5, 10, 15, 20,  and 25 g) to evaluate its influence on granulation performance. The results showed that increasing tapioca starch content significantly improved the granule yield, achieving a maximum of 67.91% at 15 g. However, there are no granular formed. The granular formed at weight of binder 25 g that resulted 67.22% yield and 36.72% Potasium. The pH of the granules slightly decreased with increasing binder dosage. Moisture content was influenced by both the binder weight and drying time; higher starch content retained more water. This study demonstrates that tapioca starch is a viable biodegradable binder for producing eco-friendly granular fertilizers from EFB ash, supporting sustainable waste valorization and agricultural practices.
Pembuatan Briket Biorang Dari Limbah Tempurung Kelapa Sawit (Elaeis Guineensis Jacq) Dengan Perekat Tepung Porang Ayub, Akmal Rizki; Rihayat, Teuku; Zaini, Halim
Jurnal Riset, Inovasi, Teknologi & Terapan Vol 4, No 1 (2025): Desember
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/ristera.v4i1.8621

Abstract

Biorang briquettes are solid fuels derived from a mixture of powder and adhesive to form a specific shape according to the desired results through a pressing process. The purpose of this study was to determine the variation in particle size and carbonization temperature of palm shell waste on the results of biorang briquette testing. This study used two independent variables, namely the particle size of palm shell charcoal 10 mesh, 20 mesh, 40 mesh, 60 mesh and 80 mesh and the carbonization temperature of 4000C, 450 0C, 500 0C, 550 0C and 600 0C. The results showed that the higher the temperature and particle size of palm shell charcoal, the lower the water content, ash content and flame duration, while the volatile content increased with increasing temperature and particle size.
Uji Kadar Flavonoid Dan Aktivitas Antioksidan Pada Ekstrak Kulit Buah Melinjo (Gnetum Gnemon L) Fadhlurrahman, Fadhlurrahman; Zaini, Halim; Dewi, Ratni
Jurnal Riset, Inovasi, Teknologi & Terapan Vol 4, No 1 (2025): Desember
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/ristera.v4i1.8627

Abstract

Melinjo fruit peel waste has various components or compounds that function for the body and can be used for natural food coloring. The compounds found in red melinjo fruit peel are phenolics, flavonoids, lycopene, vitamin C, and β-carotene. The objective of this study was to determine the effect of variations in extraction time and solvent type on flavonoid content and antioxidant activity. This study was conducted by varying the maceration extraction time for 1, 2, 3, 4 and 5 days, the types of solvents used were distilled water and 70% ethanol. The results of melinjo fruit peel extract on the effect of extraction time on both solvents, the longer the extraction time, the better the results. Depending on the type of solvent used, the 70% ethanol solvent produces a more complex extract because ethanol is active in the extraction of flavonoids, and the Aquadest solvent can only extract components that are only soluble in water. The effect of varying the extraction time using the solvent types of distilled water and 70% ethanol on the flavonoid content test showed a maximum increase in flavonoid levels on day 5. And in the antioxidant activity test, the effect of extraction time shows that the longer the extraction the higher the %inhibition, the type of 70% ethanol solvent produces an antioxidant value of 2.42 μg/mL, which is more effective to use because it produces a higher %inhibition compared to Aquadest solvent with a value of 5.45 μg/mL.
Proses Pemurnian Minyak Jelantah Menggunakan Metode Adsorbsi Kolom Syakura, Abdan; Zaini, Halim; Syafruddin, Syafruddin
Jurnal Riset, Inovasi, Teknologi & Terapan Vol 4, No 1 (2025): Desember
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/ristera.v4i1.8607

Abstract

Cooking oil is one of the basic human needs as a food processing ingredient. Using cooking oil repeatedly and continuously during thefrying process will reduce the quality of the cooking oil. One way to process used cooking oil is by adsorption using an activated carbonadsorbent. In this research, adsorbents used sugar cane bagasse, rice husks and coconut fiber were used using the column adsorptionmethod. Also, with sampling times of 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 (minutes). This research aims to determine the comparativeeffect of adsorbent variations and the effect of adsorption time on the reduction of free fatty acids, water content, peroxide value and density. Sugarcane bagasse, rice husks and coconut fiber were activated using 0.1 N NaOH for 2 hours, where the activation aims to increasethe pore diameter or produce new pores. The results of the research that has been carried out are that the best reduction in free fatty acidswas in the rice husk adsorbent type with an adsorption time of 90 minutes, resulting in free fatty acids of 1.84%. And the best peroxidevalue obtained was 6.6 mg/g. From the results of this research it can be concluded that rice husk adsorbent is better in reducing free fattyacids and peroxide value using the column adsorption method.
Co-Authors A Adriana A, Bakhtiar AA Sudharmawan, AA Abdan Syakura Adriana Adriana Amalia, Zuhra Amri Amri Anisah, Yuli Ariefin, Ariefin Ayub, Akmal Rizki Azzahra, Nyak Cut Aja Rahmawati Dewi, Ratni Elfiana Elfiana, Elfiana Elfiana, E Elia Rosita Erizal Erizal F Fachraniah Fachraniah, Fachraniah Fadhlurrahman, Fadhlurrahman Faisal Abdullah Fona, Zahra H Harunsyah Harunsyah, Harunsyah Indrayadi, Bambang Intan, Syarifah Keumala Irwan Irwan Irwan, I Kenady, Rengga Rahmat Kiram, Jumadil Leni Maulinda, Leni M Muhammad M Yunus M. Yunus Mardani Mardani MASTURA, DEWI Muhammad Sami Muhammad Sami Muhammad Yunus Nahar, Nahar Nisrina, Dian Nur, Alfin Nurdin, Irwan Pardi Pardi, Pardi Prayogi, Muhammad Akbar Prihatin, Nanang R Ridwan Rahmahwati, Cut Aja Reza Fauzan Ridwan, Ridwan Rudy Soenoko Ruhana, Ruhana S Sariadi S Syafruddin Sabila Yasara SA Safitri, Aida Salsabila, Cut Nuraini Sami, Muhamma Sami, Muhammad Sari, Husna Sariadi, S Saskia, Saskia Satriananda, S Satriananda, Satriananda Syafruddin Syafruddin Teuku Rihayat Thahirah, Afifah Ummi Habibah Zaimahwati, Zaimahwati Zulkifli Zulkifli