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The Electrical Conductivty Of Fe-Chitosan Schiff Base Complex Boy Chandra Sitanggang; Zainal Abidin
Jurnal Kimia Riset Vol. 5 No. 2 (2020): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkr.v5i2.22488

High electrical conductivity material Fe-Chitosan Schiff base produced via two stages mechanism, reaction of salicylaldehyde and chitosan in three necked flask following the formation of complex by soak Chitosan Schiff base in FeCl3 solution in various times. The formed Schiff base was confirmed by presence of imine at 1604.77 cm-1. Next, Fe absorption was analyzed by using ICP-MS gives highest results at 492,51 ppm at 5 hours immersion time. The electrical conductivity exhibit tendency to increase and the highest point at 3.5 x 10-6 S cm-1

Modifikasi Bioadsorben Rumput Laut (Eucheuma Cottonii)-Abu Sekam Padi Sebagai Bioadsorben Limbah Cair Industri Minuman Ringan Agus Salim; Neny Rasnyanti M Aras; Boy Chandra Sitanggang
Journal of Chemical Process Engineering Vol 6, No 2 (2021)
Publisher : Universitas Muslim Indonesia

Adsorpsi bahan pencemar dengan menggunakan biomassa telah banyak diteliti dua diantaranya adalah menggunakan abu sekam padi dan rumput laut. Dalam penelitian ini bertujuan untuk mengkaji bagaimana kombinasi dua biomassa tersebut dalam menurunkan nilai cemaran limbah serta untuk mengetahui bobot adsorben dan waktu kontak optimum terhadap kemampuan bioadsorben dalam mengadsorpsi limbah cair. Efektifitas bioadsorben diuji melalui beberapa parameter yakni pH, turbiditas, kadar logam Cd, total padatan tersuspensi (TSS) dan COD. Dosis optimum yang paling efektif dalam menurunkan cemaran limbah cair industri minuman ringan adalah pada 0,5 gram dalam 150 mL limbah cair selama 30 menit dan 1.5 gram selama 30 menit pada penurunan kadar logam Cd yang diuji menggunakan adsorben abu sekam padi. Kemudian dilakukan variasi kombinasi rumput laut dan abu sekam padi 100, 75, 50, dan 25(%). Dari kombinasi tersebut rumput laut sebanyak 100% memiliki efektivitas yang paling tinggi dengan penurunan kadar pH sebesar 27 %, turbiditas sebesar 75,16 %, TSS sebesar 91,43 % dan COD sebesar 97,77 %.

Preparationof Fe-Chitosan Schiff Base Complex Boy Chandra Sitanggang; Basuki Wirjosentono; Mimpin Ginting
Jurnal Pendidikan Kimia (JPKim) Vol 8, No 3 (2016): Desember
Publisher : Pascasarjana Universitas Negeri Medan

Abstract.Chitosan Schiff base (BS) was synthesized through reaction of chitosan with salycilaldehyde, next, chitosan Schiff base (BS) reacted with Fe to form Fe-chitosan Schiff base complex (BSF). The presence of Schiff base confirmed by FT-IR at 1604,77 cm-1 for imine group. Chitosan soluble in acidic solution while chitosan Schiff base partially dissolve. Subsequently, absorption of Fe was determine with ICP-MS at 1, 2, 3, 4, 5 hours (BSF 1, BSF2, BSF 3, BSF 4, BSF 5) resulting 269,98, 289, 311,8, 361,06, 492,51 ppm. Keywords: chitosan, chitosan Schiff base, Fe complex

Functionalization of cyclic natural rubber grafted maleic anhydride (cnr-g-ma) with variation of ma concentration, inisiator and reaction time Boy Chandra Sitanggang; Eddyanto Eddyanto
Jurnal Pendidikan Kimia (JPKim) Vol 11, No 3 (2019): December
Publisher : Pascasarjana Universitas Negeri Medan

Cyclic natural rubber have low compatibilities when mixed with other polymer. The compatibility of a cyclic natural rubber (CNR) could be increased through grafted functional monomer to the polymer backbone. This research aims to know about influence of maleic anhydrate concentration (3-15 phr) as monomer, concentration of benzoyl peroxide (0.05-0.2 molar ratio) as initiator and times (15-90 minute) towards grafting degree of maleic anhydride. The research conducted with reflux in oil bath, at constant temperature 110ºC. The grafting degree determined with titration method and FTIR analysis used to show the existence of grafted maleic anhydrate onto cyclic natural rubber. Result of FTIR analysis showed that grafted anhydrate to cyclic natural rubber assigned with the presence of carbonyl absorptions (C=O stretching). Result titration showed that concentration of maleic anhydrate and benzoyl peroxide enhanced as well as grafting degree. While for variation of time, optimum grafting degree achieved at 60 minute.Keywords: Grafting; inisiator; natural rubber; polymer

Calcinated Ferronickel Slag as Catalyst In Biodiesel Synthesis from Cooking Oil Sitanggang, Boy Chandra; Aras, Neny Rasnyanti M.
Indonesian Journal of Chemical Research Vol 11 No 3 (2024): Edition for January 2024
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2024.11-boy

Ferronickel slag is a byproduct of the nickel ore smelter factory that is typically dumped in an open area and is detrimental for the environment. The research objectives are to examine ferronickel slag potential as catalyst in producing biodiesel. Ferronickel slag was prepared by milling followed by sieving 200 meshes and calcinated at 900 ºC. The next step was to evaluate the calcinated slag using XRF, which revealed that the major components were, in order, Si (49.47%), Fe (36.09%), Ca (7.12%), Cr (3.01%), and Mn (2.28%). Slag that has been calcined and utilized in the transesterification of cooking oil as catalyst in three necked flask with oil to methanol ratio is 1:9, reaction times (1, 2, 3 hours) and temperatures (70, 90, 110 oC). Then, the product were tested for water content, density, viscosity, acid number, free fatty acids, total glycerol, percent of methyl esters according to SNI 7182-2015. FTIR showed the presence of peaks at 1743.65 and 1157.29 corresponding to C=O and O-CH3 functional groups.

Modifikasi Bioadsorben Rumput Laut (Eucheuma Cottonii)-Abu Sekam Padi Sebagai Bioadsorben Limbah Cair Industri Minuman Ringan Salim, Agus; M Aras, Neny Rasnyanti; Sitanggang, Boy Chandra
Journal of Chemical Process Engineering Vol. 6 No. 2 (2021): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jcpe.v6i2.817

Adsorpsi bahan pencemar dengan menggunakan biomassa telah banyak diteliti dua diantaranya adalah menggunakan abu sekam padi dan rumput laut. Dalam penelitian ini bertujuan untuk mengkaji bagaimana kombinasi dua biomassa tersebut dalam menurunkan nilai cemaran limbah serta untuk mengetahui bobot adsorben dan waktu kontak optimum terhadap kemampuan bioadsorben dalam mengadsorpsi limbah cair. Efektifitas bioadsorben diuji melalui beberapa parameter yakni pH, turbiditas, kadar logam Cd, total padatan tersuspensi (TSS) dan COD. Dosis optimum yang paling efektif dalam menurunkan cemaran limbah cair industri minuman ringan adalah pada 0,5 gram dalam 150 mL limbah cair selama 30 menit dan 1.5 gram selama 30 menit pada penurunan kadar logam Cd yang diuji menggunakan adsorben abu sekam padi. Kemudian dilakukan variasi kombinasi rumput laut dan abu sekam padi 100, 75, 50, dan 25(%). Dari kombinasi tersebut rumput laut sebanyak 100% memiliki efektivitas yang paling tinggi dengan penurunan kadar pH sebesar 27 %, turbiditas sebesar 75,16 %, TSS sebesar 91,43 % dan COD sebesar 97,77 %.

Utilization of Industrial Waste for the Production of Environmentally Friendly Briquettes as a Solution to Supporting the Green Industry Irwan, Muhammad; Sitanggang, Boy Chandra
Jurnal Sains dan Teknik Terapan Vol. 3 No. 1 (2025): Jurnal Sains dan Teknik Terapan
Publisher : Unit Penelitian dan Pengabdian Kepada Masyarakat, AK-Manufaktur Bantaeng

Show Abstract | Download Original | Original Source | Check in Google Scholar

The food and beverage industry in Indonesia generates solid waste such as tea residues, Fly Ash and Bottom Ash (FABA) from palm kernel shells, wood pallet sawdust, and cardboard, which pose a risk of environmental pollution. Utilizing this waste as briquettes offers an innovative solution to reduce pollution while supporting the Green Industry program launched by the Indonesian Ministry of Industry. Briquettes, as solid fuel made from organic materials, can replace coal, reduce carbon emissions, and provide environmental benefits. This study aims to develop methods for utilizing industrial waste to produce eco-friendly briquettes. Quality tests include measuring moisture content, ash content, volatile matter, and calorific value. The results indicate that tea residues and pallet sawdust have high calorific values of 5049.63 Kcal/Kg and 5053.71 Kcal/Kg, respectively, comparable to coal. Tea residues exhibit a high volatile matter content (43.80%) for efficient combustion, while pallet sawdust shows low ash content, improving efficiency. FABA is used as a filler material with a calorific value of 3648.81 Kcal/Kg and a volatile matter content of 85.43%, supporting combustion and increasing briquette mass. The combination of these materials produces environmentally friendly briquettes with competitive combustion performance. These waste-based briquettes hold great potential for application in the food and beverage industry, promoting sustainable waste management and achieving green industry targets.

Making of Body Lotion from Ziziphus Mauritiana Extract Mentari, Rezky Ayu; Qalby, Besse Nurul; Maulidia, Aprindah Nur; Fachnesya, Nindy; Nurhajawarsi, Nurhajawarsi; Sitanggang, Boy Chandra
Jurnal Sains dan Teknik Terapan Vol. 3 No. 1 (2025): Jurnal Sains dan Teknik Terapan
Publisher : Unit Penelitian dan Pengabdian Kepada Masyarakat, AK-Manufaktur Bantaeng

Show Abstract | Download Original | Original Source | Check in Google Scholar

Bidara leaves (Ziziphus mauritiana) contain active compounds such as flavonoids, tannins and saponins which function as antioxidants and antibacterials for healthy skin. This research aims to develop a body lotion formulation made from bidara leaf extract with tests including phytochemical, pH, spreadability, homogeneity, water content and organoleptic tests. Phytochemical results showed the presence of flavonoids, alkaloids, terpenoids, saponins and tannins. Three formulations were tested with different concentrations of bidara leaf extract, namely F1 (1%), F2 (3%), and F3 (5%). Test results show that the pH of all formulas (F1: 5.7; F2: 5.5; F3: 5.4) is within the SNI standard range (3.5–8.0). Spreadability decreases as concentration increases, namely F1 (7 cm), F2 (6.4 cm), and F3 (5.7 cm). All formulas met the homogeneity criteria, while the highest water content was found in F1 (49.05%) compared to F2 (26.3%) and F3 (25.6%). Organoleptic tests show that aroma resistance reaches 100% and there is no irritation in all formulas. The preferred aroma was higher in F3 (63.3%) compared to F2 (46.7%) and F1 (43.3%). Fragrance levels were similar for F1 and F3 (53.3%) as well as F2 (50%). The preferred humidity was highest in F2 (53.3%) followed by F3 (50%) and F1 (33.3%), while the permeability was highest in F3 (50%) compared to F1 (43.3%) and F2 (40%).

Enhancing Local Food Industry: Production of “Sehati” Marning Corn in Bantaeng Regency Lestari, Mega Fia; Syaiful, Syaiful; Irwan , Muhammad; Sitanggang, Boy Chandra; Hermansyah, Hermansyah; Odilia Valentine; Aras, Neny Rasnyanti M; Ratlalan, Roberth Marshall; Abidin, Zainal; Supu, Abd Rachman
Yumary: Jurnal Pengabdian kepada Masyarakat Vol. 5 No. 3 (2025): Maret
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/yumary.v5i3.3118

Purpose: The local food processing business is essential to the Indonesian economy. Lumpangan Village in Bantaeng Regency, South Sulawesi, has great potential due to the Small and Medium Enterprises (SME) product "SEHATI," which manufactures Marning Corn. However, the need on sunshine for drying limits production, reducing output during the rainy season. To address this issue, the Akademi Komunitas Industri Manufaktur Bantaeng community service programme strives to improve corn product quality through the use of mechanical dryers and the education of workers on Good Manufacturing Practices (GMP). Methodology: This program's methodology comprises collaborating with village officials, observing SMEs, developing solutions, implementing the community service programme, and assessing the program's success. Results: Observations show that mechanical dryers are successful in resolving drying problems, and GMP education enhances product quality. Conclusions: The service program was successful in raising the marning corn production by UMKM "SEHATI" and establishing the program as a long-term initiative. In addition, the program received the full support of village officials by the successful in overcoming production constraints during the rainy season through the purchase of corn dryers and Good Manufacturing Practice (GMP) education. Limitations: Prior to deployment, the primary drawback was a reliance on dry weather conditions. Contributions: This programme makes a substantial contribution, with the expectation that its long-term success will help to create other SMEs in Lumpangan Village and increase the quality of Marning corn products through better drying technology and worker education.

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