Article Per Year (5 Year)
p-Index From 2020 - 2025
0.61
P-Index
This Author published in this journals
All Journal Jurnal Inovasi Teknik Kimia G-Tech : Jurnal Teknologi Terapan Nusantara Science and Technology Proceedings
Ni Ketut Sari
Universitas Pembangunan Nasional Veteran Jawa Timur
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
OPTIMASI KADAR BIOETANOL DARI LIMBAH CAIR TEPUNG TERIGU MENGGUNAKAN RESPONSE SURFACE METHOD (RSM) Nabilah Adita Putri; Yuliana Hariyati Nur Chasanah; Ni Ketut Sari
Jurnal Inovasi Teknik Kimia Vol 8, No 3 (2023)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v8i3.8167

Abstract

Banyaknya limbah cair tepung terigu dapat mencemari lingkungan apabila tidak dimanfaatkan dengan baik. Limbah cair tepung terigu mengandung pati sebesar 9,282 % dan glukosa 3,786 %w/w. Dalam penelitian ini memanfaatkan limbah cair tepung terigu sebagai bahan baku pembuatan bioetanol dengan proses hidrolisis asam dengan Asam Sulfat 5 % v/v, fermentasi menggunakan Turbo Yeast Alcotec 48. Kemudian dilakukan proses optimasi hasil dengan Response Surface Methodology (RSM) menggunakan aplikasi Minitab 19. Tujuan dari penelitian ini yaitu untuk menentukan nilai pH filtrat glukosa dan waktu fermentasi yang optimum untuk menghasilkan kadar bioetanol tertinggi pada proses fermentasi berdasarkan eksperimen dan Response Surface Method (RSM), memperoleh model persamaan polynomial orde menggunakan Response Surface Method (RSM) dan menganalisis model yang diperoleh dengan Analysis of Variance (ANOVA). Hasil penelitian pada proses hidrolisis diperoleh kadar glukosa sebelum hidrolisis sebesar 3,5 % dan setelah hidrolisis sebesar 9,3 %. Kemudian pada proses fermentasi diperoleh kadar bioetanol teknis sebesar 25-31 % dan nilai kadar bioetanol yang optimum sebesar 30,3 % pada nilai pH 6,26263 dan waktu fermentasi 7 hari. Persamaan model yang diperoleh yakni Y = 2,03+7,005x1–1,111x2–0,5092x12+0,0106x22-0,0894x1x2. Nilai R2 yang diperoleh pada model persamaan sebesar 87,56% yang mengindikasikan bahwa model cukup signifikan. Kata kunci: fermentasi, limbah cair tepung terigu, pH, respon surface method, waktu fermentasi
Optimization of Glucose from Saccaromycess cerevicae Liquid Waste Using the Acid Hydrolysis Process Ni Ketut Sari; Dira Ernawati; Komang Nickita Sari
Nusantara Science and Technology Proceedings 8th International Seminar of Research Month 2023
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4103

Abstract

Selection of Saccharomyces Cereviceae (SC) wastewater as a component produced by PT. Enero comes from a fermentation process that uses SC yeast, it’s availability is great and it has not been used as a raw material for glucose, which until now has been industrial waste. Efforts have been made to convert SC waste water into liquid fertilizer and biodiesel feedstock. The recovery of glucose from SC waste water in the chemical hydrolysis process using the reaction surface method (RSM), the hydrolysis process was carried out with a digital stirrer at a rotation speed of 200 rpm and the addition of 5 ml of 10% NaOH. The variables used were 50–250 mL SC waste water and 10–30 mL HCl volume. The optimization results using RSM of the chemical hydrolysis process are shown in three-dimensional graphs, pH and SC waste water ratio and HCl volume, glucose content and SC waste water ratio and HCl volume. The best results with SC waste volume of 8.58 mL and HCl volume of 34.14 mL achieved a pH of 4.38. In order to achieve a pH of 4.5, a hydrolysis process is carried out because the pH of the SC waste water is very acidic, i.e. 3.5, and 10% NaOH is added to increase the pH. The result of glucose from the hydrolysis process is 17.96%, the required volume of waste water SC of 137.14 ml, the addition of 34.14 ml of HCl as a raw material for the fermentation process. Based on the optimization results using RSM and chemical hydrolysis method, the glucose content is 17.96% and the pH is 4.38 with the SC water waste volume of 137.14 mL and the HCl volume of 34.14 mL.
The Effect of Particle Size and Time in the Ashing Process on the Yield of Rice Husk Silica Extraction Rizki Amirullah; Prasdinata Meidaus Kusuma; Ni Ketut Sari
G-Tech: Jurnal Teknologi Terapan Vol 9 No 1 (2025): G-Tech, Vol. 9 No. 1 January 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v9i1.5733

Abstract

Indonesia is agrarian country that produces a wide variety of agricultural products. One of the agricultural products that is widely produced is rice. It has the main components of cellulose (38.3%), hemicellulose (31.6%), lignin (11.8%) and silica (18.3%). The percentage of silica (SiO2) in ash ranges from 80% to 99%, but different operating conditions during the ashing process make the silica levels obtained also not the same. In this research, it was carried out with a variety of conditions, namely the burning time and particle size of the rice husk. This research aims to determine the effect of particle size and combustion time on silica obtained from rice husks. To obtain silica from rice husk ash, it is necessary to extract it using 10% KOH solvent for 90 minutes at a temperature of 85°C with a liquid solid ratio of 1:12. The larger the size of the husk, the better the combustion process. The ashing temperature used was 700°C and the highest silica content was 81% at a particle size of 20 mesh and a fumigation time of 120 minutes. And the lowest silica content is 31% at a particle size of 100 mesh and ashing time of 30 minutes.
Co-Authors Dira Ernawati Komang Nickita Sari Nabilah Adita Putri Prasdinata Meidaus Kusuma Rizki Amirullah Yuliana Hariyati Nur Chasanah