The amount of sugarcane bagasse in Indonesia is abundant while the utilization is still limited. One of the alternatives f i r bagasse utilization is as pulp material. To minimize the waste from the pulping process, the effect of using a chemical process (with nitric acid) and a biopulping process (using Fusarium solani) were studied and measured by the percentage of a-cellulose content in bagasse pulp. In the chemical process, the nitric acid concentration and the reaction time were varied. llre pulping process was conducted at constant temperature of 102°C and the mixture was agitated at 900 rpm. The highest percentage of a-cellulose content in pulp was 79.28%, obtained at the concentration of 3.5% for a reaction time of 3.5 hours. At higher concentrations and longer cooking times, the a-cellulose decreased due to the cellulose degradation. In the biopulping process, the incubation temperature was kept at 30°C. The highestpercentage of a-cellulose was 65.80% obtained at an incubation time of 25 days. When compared to nitric acid pulping, biopulping is less eflcient. However it has one advantage that it only uses a small amount of chemicals and, therefore, creates less pollutants.
Baristand Industri Padang is an agency under control Ministry of Industry of Indonesia which it has a duty to serve the industries involving research activities, standardization and certification. To realize the programs, Baristand Industri Padang implemented a quality management system including ISO 9001, ISO/IEC 17025, ISO/IEC 17065, and KNAPPP 02. Nevertheless, it has been running separately. Therefore, quality of products not only proven by testing the final product, but also needed other evidence as a certificate that ensuring the quality of products. This research aims to design the Quality Management System for Baristand Industri Padang which it was implemented using life cycle methodology. Finding of this study revealed there was integration of ISO 9001, ISO/IEC 17025, ISO/IEC 17065, and KNAPPP 02 in the context of the structure of the process, documents, and organization. In the context of the structure of processes, it obtained four groups of primary process involving management, research and standardization, support, and improvement. Moreover, In terms of documentation, there was three levels of the document such as the document of strategic policy, quality guideline and procedures. While aspects of the organizational structure, the integration of quality management system required to develop the organizational structure that consist of Top Management, Technical Manager, Quality/Management Representative, Researcher and Administrative/Technical Staff. In addition, this study provided an integrated quality management information system including management of quality documents and quality records. Finally, the integrated quality management system and quality management information system has been designed to meet the expectations of the organization.
ABSTRAKPenelitian pemanfaatan tanin dan katekin gambir telah banyak dilakukan. Namun, belum dilaporkan penelitian yang mengkaji pemanfaatan limbah padat pengolahan gambir. Tujuan penelitian adalah memanfaatkan limbah padat pengolahan gambir sebagai bahan baku pembuatan tinta serbuk printer. Penelitian dilakukan melalui proses pirolisis limbah padat dengan variasi suhu 400, 500, 600 o C dan variasi waktu 30, 60 menit. Kadar karbon terikat tertinggi diperoleh sebesar 42% dengan suhu pirolisis 400 o C selama 60 menit. Proses pirolisis limbah padat gambir selanjutnya dilakukan pada suhu dan waktu optimal tersebut. Arang aktif dilakukan aktifasi menggunakan aktifator H 3 PO 4 pada konsentrasi 0, 5 dan 10% selama 24 jam, kemudian didinginkan dan dicuci untuk menghilangkan sisa H 3 PO 4 , dan selanjutnya dikeringkan dalam oven pada suhu 115 o C selama 24 jam. Proses penghalusan menggunakan ball milling selama 2 jam dengan kecepatan 500 rpm. Hasil pengujian kadar karbon terikat berkisar antara 43-51%. Hasil pengujian morfologi dengan alat Scanning Electron Microscope) memperlihatkan serbuk karbon yang dihasilkan belum mempunyai ukuran seragam. Ukuran partikel serbuk rata-rata 5-10 µm dengan indek polidispersitas sebesar 0,9. Kandungan unsur mineral yang terbanyak dari hasil analisis serbuk karbon adalah unsur Ca, Mg, K, Si, Fe, dan P. Uji coba kualitas cetak berdasarkan ISO/IEC 19752:2004 menggunakan printer laser belum memberikan hasil yang optimal. Kata kunci: gambir, aktifator, serbuk karbon, tinta serbuk ABSTRACT Research on the utilization of tannins and catechins of gambier has been done a lot. There is no research report however that examines the utilization of gambier processing solid waste. The objective of the research was to utilize the solid waste of gambier processing as a raw material of printer toner. The research was done through pyrolysis process of solid
ABSTRAKPenelitian tentang adsorbsi ion Cr(VI) dengan menggunakan adsorben dari limbah padat lumpur aktif industri crumb rubber telah dilakukan dengan metode statis (batch). Sampel yang digunakan adalah limbah padat lumpur aktif industri crumb rubber segar dan lumpur yang dikarbonisasi serta diaktivasi dengan KOH. Parameter yang dipelajari yaitu pH awal larutan, waktu kontak, dan konsentrasi ion Cr(VI). Hasil penelitian menunjukan bahwa limbah padat lumpur aktif industri crumb rubber mengandung silika dan alumina yang tinggi yaitu 49,0% dan 16,5%, sehingga dapat digunakan sebagai adsorben. pH optimum adsorben untuk lumpur diaktivasi yaitu pada pH 1 dan lumpur segar pada pH 2. Waktu kontak optimum yaitu 120 menit dan konsentrasi ion Cr(VI) optimum 70 mg/L untuk masingmasing adsorben. Data sesuai dengan isotherm Langmuir dengan kapasitas serapan maksimum terhadap ion Cr(VI) 2,075 mg/g untuk adsorben lumpur diaktivasi dengan KOH dan 2,232 mg/g untuk adsorben lumpur segar. Kata Kunci: Adsorpsi, limbah lumpur aktif, industri crumb rubber, ion Cr(VI), isotherm Langmuir ABSTRACT Research on ion Cr(VI) adsorption by using adsorbent from waste activated sludge crumb rubber industry has been done with static method (batch
Sebagai upaya untuk menjadi perusahaan yang kompetitif, PT GCK Indonesia sebagai salah satu produsen Monososium Glutamat di Indonesia, harus terus melakukan peningkatan sistem di segala sektor. Termasuk sistem produksi. Penelitian ini melakukan analisis perbaikan sistem produksi dan menelusuri produk cacat dengan penerapan metode Six Sigma. Data yang digunakan berasal dari hasil produksi selama enam bulan. Berdasarkan tahapan pengukuran, cacat produk memiliki nilai sigma sebesar 3,23 dengan nilai DPMO sebesar 275.586,22. Faktor manusia dan mesin adalah penyebab utama cacat. Perbaikan dilakukan dengan memperbaiki sistem perawatan mesin dan melengkapi prosedur operasi standar untuk setiap aktivitas kritis di lini produksi. ABSTRACTIn order to gain competitive advantages, PT GCK Indonesia, as one of the Monosodium Glutamate producers in Indonesia, must continuously improve the system in all fields. Including the production system. This study used the Six Sigma method, which analyzed product defects. Data used comes from production results for six months. Based on the measurement stages, the product defect had a sigma value of 3.23 with a DPMO value of 275,586.22. Human and machine factors are the leading causes of defects. Improvements are made by correcting the machine maintenance system and completing standard operating procedures for each critical activity.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.