Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Jurnal Penelitian Karet Jurnal Teknik
Tjokorde Walmiki Samadhi
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Analisis Ekonomi Awal Proses Produksi Biobutanol dari Tandan Kosong Sawit dengan Proses Hidrolisis dan Fermentasi Secara Terpisah Reno Susanto; Tjokorde Walmiki Samadhi; Winny Wulandari; Said Zul Amraini
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 21 No 2 (2022): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/jt.vol21no2.447

Abstract

The limitation of petroleum reserves and environmental issues have led countries worldwide to shift towards producing and utilizing biofuels as an alternative solution to replace fossil fuels. One of the biofuels that can be used is biobutanol, which can be produced from residual waste containing lignocellulose. An empty fruit bunch (EFB) from oil palm is a residual waste used as raw material for biobutanol production. The method that can be used in biobutanol production is the Separated Hydrolysis and Fermentation (SHF) process, which allows the cellulose hydrolysis process to be pre-treated with acid at lower temperature but for longer time or at higher temperature for shorter time. The product from Clostridium acetobutylicum using hydrolysate from cellulose hydrolysis is higher than that from acid hydrolysis. The cellulase enzyme hydrolysis process can be separated from the fermentation process according to their optimum conditions. From the initial economic analysis calculation with production basis of 10,000 tons per year, total gross profit margin of IDR 39,459/kg was obtained, indicating that biobutanol production from EFB biomass is economically feasible and profitable. Further study is needed to conduct a techno-economic analysis of the biobutanol production process using EFB as raw material.
MODELASI PENGERINGAN LATEKS KARET ALAM DENGAN TEKNOLOGI PENGERINGAN SEMPROT MENGGUNAKAN ASPEN PLUS Hafis Pratama Rendra GRAHA; Afrizal VACHLEPI; Akhmad Zainal ABIDIN; Tjokorde Walmiki SAMADHI
Jurnal Penelitian Karet JPK: Volume 44, Nomor 1, Tahun 2026
Publisher : Pusat Penelitian Karet - PT. Riset Perkebunan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/ppk.jpk.v44i1.1259

Abstract

Abstrak   Tahapan pengolahan karet alam konvensional secara umum masih panjang dan memerlukan waktu yang lama. Proses pengeringan menjadi tahapan utama dalam proses pengolahan karet alam. Teknologi pengeringan semprot dapat menjadi solusi untuk mengurangi proses pengolahan karet alam yang panjang. Penentuan dan perancangan ruang pengering serta kondisi operasi pengeringan semprot dapat dilakukan menggunakan simulasi komputasi. Penelitian ini bertujuan untuk mengevaluasi dan mengkaji kondisi operasi dari proses pengeringan lateks karet alam menggunakan teknik pengeringan semprot melalui simulasi komputasi. Variabel perlakuan yang diberikan berupa laju alir umpan lateks (0,2; 0,4; 0,6; dan 0,8 kg/jam), kadar air umpan (70%, 75%, 80% dan 85%) dan suhu udara pengering (140 °C, 160 °C, 180 °C dan 200 °C). Hasil penelitian menunjukkan bahwa variabel perlakuan yang diberikan memberikan pengaruh terhadap ukuran diameter droplet, laju pengeringan, serta bobot massa, kadar air, dan temperatur produk akhir. Berdasarkan hasil simulasi komputasi diperoleh bahwa kondisi operasi terbaik yang dapat dipilih untuk proses pengeringan semprot  lateks karet alam yaitu laju alir umpan maksimum 0,4 kg/jam dengan temperatur udara pengering sekitar 180 °C. Kondisi operasi ini bisa diterapkan untuk ruang (chamber) pengering dengan dimensi bagian silinder berdiameter 35 cm dan ketinggian 63 cm serta ketinggian bagian kerucut sekitar 40 cm.
Co-Authors Afrizal Vachlepi Akhmad Zainal Abidin Hafis Pratama Rendra GRAHA Reno Susanto Winny Wulandari