Article Per Year (5 Year)
p-Index From 2021 - 2026
0.817
P-Index
This Author published in this journals
All Journal AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT SPIN: Jurnal Kimia & Pendidikan Kimia CHEDS: Journal of Chemistry, Education, and Science Jurnal Masyarakat Indonesia
Rika Silvany
Politeknik Teknologi Kimia Industri Medan
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Materials Science & Nanotechnology

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Efektifitas Promosi Berbasis WhatsApp Dalam Pemasaran Minuman Honeymon Pratiwi Putri Lestari; Putri Rizky; Dedi Simanjuntak; Zainal; Sukmawati; Rika Silvany; Resti Ayu Ningrum
Jurnal Masyarakat Indonesia (Jumas) Vol. 5 No. 01 (2026): Jurnal Masyarakat Indonesia (Jumas)
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/jumas.v5i01.361

Abstract

By utilizing existing social media, it is possible to promote and see consumer enthusiasm for the products being sold. In promoting the product, the business owner can create their own advertisements by making videos showing the process of producing Honeymon drinks, starting from the packaging process, sticker application, and the handover process from the Honeymon drink owner to cafes and sales stalls in several locations in Binjai City. They also provide articles about the health benefits of consuming Honeymoon drinks. Sales using social media can assess customer satisfaction through testimonials sent by consumers. Based on observations within a month of using social media, Honeymoon drink sales have increased, because the number of social media followers has also increased, making it easier to promote Honeymoon drinks.
THE EFFECT OF ACIDIC AND ALKALINE CONDITIONS ON FREE FATTY ACID CONTENT DURING THE TRANSESTERIFICATION OF WASTE COOKING OIL Rismul Trianto Salawali; Resti Ayu Ningrum; Rika Silvany; Putri Rizky
SPIN JURNAL KIMIA & PENDIDIKAN KIMIA Vol. 8 No. 1 (2026): January - June 2026
Publisher : UIN Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/spin.v8i1.15425

Abstract

Waste cooking oil is a waste material with significant potential for utilization as a biodiesel feedstock; however, its high free fatty acid (FFA) content can reduce the efficiency of the transesterification process. This study aimed to investigate the effect of acidic and alkaline conditions on the presence of free fatty acids during the transesterification of waste cooking oil using sodium hydroxide (NaOH) and potassium hydroxide (KOH) catalysts. Prior to the transesterification process, the waste cooking oil was filtered and heated at 60°C for 30 minutes to reduce its moisture content. Transesterification was carried out using methanol at a methanol-to-oil molar ratio of 6:1 and a catalyst concentration of approximately 0.25% of the oil weight. The reaction pH was varied at 6, 7, 8, 9, and 10, while the reaction temperature was maintained at 60°C for 1 hour. FFA content was analyzed before and after transesterification using an acid-base titration method with 0.1 N NaOH solution. The results showed that the initial FFA content of the waste cooking oil was 5.20%. The use of the NaOH catalyst resulted in final FFA contents of 3.00%, 2.55%, 1.90%, 1.75%, and 2.20% at pH 6, 7, 8, 9, and 10, respectively, corresponding to FFA reductions of 42.3%, 51.0%, 63.5%, 66.3%, and 57.7%. Meanwhile, the KOH catalyst produced final FFA contents of 2.80%, 2.35%, 1.70%, 1.60%, and 2.05%, with FFA reductions of 46.2%, 54.8%, 67.3%, 69.2%, and 60.6%, respectively. The reduction in FFA content increased with increasing pH and reached its optimum condition at pH 9 for both catalysts. At pH 10, a decrease in FFA reduction efficiency was observed, which was likely attributed to the occurrence of side reactions such as saponification. Overall, the KOH catalyst demonstrated superior performance compared to NaOH in reducing FFA content under all tested pH conditions. These findings indicate that mildly alkaline to moderately alkaline conditions, particularly at pH 9, represent the optimum conditions for reducing FFA content during the transesterification of waste cooking oil.
Pengaruh Lamanya Waktu Fermentasi Menggunakan Aktivator Effective Microorganisme (EM4) Terhadap Kadar Nitrogen (N) Dan Phosfor (P) Pada Pupuk Organik Cair Dari Limbah Kulit Kakao Putri Rizky; Rika Silvany; Resti Ayu Ningrum
CHEDS: Journal of Chemistry, Education, and Science Vol 7, No 2 (2023)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v7i2.8189

Abstract

Making liquid organic fertilizer, especially from cocoa shells with the addition of bio activator EM4 (Effective Microorganisms) aims to determine the effect of fermentation time on the content of Nitrogen (N) and Phosphorus (P) in liquid organic fertilizer, as well as determining the effect of bio activator EM4 content on N and P The method for making this liquid organic fertilizer is that cocoa shell waste is crushed before fermentation. Then the bio activator EM4 is prepared for addition to cocoa shell waste which has been reduced in size. Cocoa waste is put into a 500 ml beaker, the EM4 bio activator solution is then evenly put into the beaker. Sampling was carried out based on variations in fermentation time (6 days, 12 days, 18 days and 24 days) as well as variations in the addition of 5 ml and 10 ml of EM4 bio activator. The research results showed that the best N and P levels were obtained on the 18th day of fermentation with a volume of 10 ml of EM4 bioactivator, for a nitrogen content of 1.4% and a phosphorus content of 0.35%. The volume of EM4 bio activator greatly influences the N and P content, because the greater the volume of EM4 bio activator, the higher the N and P levels.ABSTRACT Making liquid organic fertilizer, especially from cocoa shells with the addition of bio activator EM4 (Effective Microorganisms) aims to determine the effect of fermentation time on the content of Nitrogen (N) and Phosphorus (P) in liquid organic fertilizer, as well as determining the effect of bio activator EM4 content on N and P The method for making this liquid organic fertilizer is that cocoa shell waste is crushed before fermentation. Then the bio activator EM4 is prepared for addition to cocoa shell waste which has been reduced in size. Cocoa waste is put into a 500 ml beaker, the EM4 bio activator solution is then evenly put into the beaker. Sampling was carried out based on variations in fermentation time (6 days, 12 days, 18 days and 24 days) as well as variations in the addition of 5 ml and 10 ml of EM4 bio activator. The research results showed that the best N and P levels were obtained on the 18th day of fermentation with a volume of 10 ml of EM4 bioactivator, for a nitrogen content of 1.4% and a phosphorus content of 0.35%. The volume of EM4 bio activator greatly influences the N and P content, because the greater the volume of EM4 bio activator, the higher the N and P levels.       
EFEKTIFITAS PROMOSI BERBASIS WHATSAPP DALAM PEMASARAN USAHA KITA BERAS DI BINJAI Dedi Simanjuntak; Pratiwi Putri Lestari; Putri Rizky; Rika Silvany; Resti Ayu Ningrum; Fauzan Azim; Zainal; Sukmawati
Amaliah: Jurnal Pengabdian Kepada Masyarakat Vol 9 No 2 (2025): Amaliah Jurnal: Pengabdian kepada Masyarakat
Publisher : LPPI UMN AL WASHLIYAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32696/ajpkm.v9i2.6213

Abstract

Usaha Kita Beras yang berada di Binjai merupakan usaha yang menjual beras dari sawah pribadi pemilik usaha Kita Beras. Proses kegiatan ini bertujuan membantu usaha Kita Beras dalam meningkatkan penjualan beras. Penjualan beras dilakukan tidak hanya dengan menjual secara langsung, tetapi juga dilakukan menggunakan penjualan online yaitu soisal media. Dengan memanfaatkan sosal media yang ada dapat mempromosikan dan melihat antusias konsumen pada produk yang dijual. Dalam mempromosikan produk, pemilik usaha bisa membuat iklan sendiri dengan membuat video tentang cara proses menghasilkan beras mulai dari proses penanaman, penggilingan, dan pengangkutan dari gudang hingga ke kurir ataupun ke konsumen langsung. Serta memberikan artikel tentang mengkonsumsi beras dari sawah pribadi hasil dari panen terbaru. Penjualan menggunakan sosial media bisa menilai kepuasan pelanggan dengan testimonial yang dikirim oleh konsumen. Berdasarkan hasil pengamatan dalam sebulan menggunakan sosial media, penjualan Kita Beras meningkat, karena pengikut sosial media juga sudah banyak sehingga memudahkan promosi Kita Beras.
Co-Authors Dedi Simanjuntak Fauzan Azim Pratiwi Putri Lestari Putri Rizky Putri Rizky Putri Rizky Resti Ayu Ningrum Resti Ayu Ningrum Resti Ayu Ningrum Rismul Trianto Salawali Sukmawati Sukmawati Zainal