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All Journal Jurnal Keteknikan Pertanian Tropis dan Biosistem Agroindustrial Journal Journal Of Industrial Engineering & Technology Innovation
Devita, Wilda Harlia
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Characterization of Activated Carbon from Coffee Husk Using Potassium Hydroxide (KOH) as an Activator Putra , Tamam Athallah Rhely; Yunira, Eka Nur'azmi; Pratama, Borneo Satria; Witoyo, Jatmiko Eko; Pangestuti , Martasari Beti; Putra, Endo Pebri Dani; Nugraha, Aditya Wahyu; Devita, Wilda Harlia
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 1 (2025): April 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jkptb.2025.013.01.01

Abstract

Coffee husk is an agricultural by-product of coffee production, and its utilization is still limited. So, the study focuses on the potential of coffee husk to be turned into activated carbon. An essential step in producing activated carbon is activation, primarily performed using chemical solvents, such as potassium hydroxide (KOH). However, there are still limited studies on the effect of KOH concentration on the activation of charcoal from coffee husk. Therefore, the study aims to determine the impact of potassium hydroxide (KOH) concentrations on the characteristics of activated carbon derived from coffee husk. The KOH concentration ranges used to activate charcoal were 0 M (as control), 1 M, and 2 M, and were conducted using the completely randomized design (CRD) approach. The characteristics of the activated carbon were analyzed according to the SNI 06-3730-1995 standard, including moisture content, ash content, volatile matter content, and bonded carbon content. The results indicated that KOH concentration significantly impacted the characteristics of activated carbon derived from coffee husk.
Coffee Supply Chain Performance Measurement In Ulu Belu District, Tanggamus Regency, Lampung Province Sylvia, Teny; Wiyono, Teguh; Putra, Endo Pebri Dani; Asrol, Muhammad; Sembiring, Noveliska Br; Yunira, Eka Nur'azmi; Subara, Deni; Devita, Wilda Harlia
Agroindustrial Journal Vol 12, No 1 (2025)
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/aij.v12i1.106071

Abstract

Ulu Belu District, as the largest producer of robusta coffee in Lampung Province, faces challenges throughout its coffee supply chain, from cultivation to marketing. This study aims to examine the structure of the coffee supply chain, evaluate its performance using the Supply Chain Operations Reference (SCOR) model combined with the Analytic Network Process (ANP), and recommend strategies for improvement. The identification results reveal that the coffee supply chain in Ulu Belu District involves several key actors, including farmers, commodity aggregators, collectors, business partners, ground coffee processors, domestic roasters, retailers, exporters, and consumers. This supply chain operates through the flow of products, information, and financial resources among these actors. The coffee supply chain performance measurement results in Ulu Belu District indicate a very poor overall performance score of 58.855. Performance at the three supply chain tiers also reflects concerning conditions: farmers scored 59.721, indicating a very poor performance; collectors scored 62.888, reflecting a poor condition; and business partnerships scored the lowest at 53.957, also categorized as very poor. The strategies for improving supply chain performance include providing training and outreach on Good Agricultural Practices (GAP), implementation of GAP and Good Handling Practices (GHP), implementation of the Common Code for the Coffee Community (4C) certification, increasing storage warehouse capacity, implementing Collaborative Planning, Forecasting, and Replenishment (CPFR) in supply chain management in Ulu Belu, determining safety stock, and planning delivery schedules.
STUDI KELAYAKAN PENDIRIAN INDUSTRI PERMEN JELLY DARI UBI CILEMBU PADA PT GUMMY GEMBIRA Nainggolan, Willyana Tri Andini; Awanis, Zatalini; Setiawan, Ahmad Dwi; Oktaviani, Nurul; Ariyanto, Krisna; Aviliano, Avil; Yogautami, Radya; Sylvia, Teny; Devita, Wilda Harlia
Journal of Industrial Engineering & Technology Innovation Vol. 3 No. 2 (2025): Journal of Industrial Engineering & Technology
Publisher : LENVARI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61105/jieti.v3i2.351

Abstract

Cilembu sweet potato, a leading Indonesian commodity with natural sweetness and distinctive aroma, has potential to be processed into value-added jelly candies. This study aims to assess the feasibility of developing a Cilembu sweet potato-based jelly candy industry from technical, market, management, location, and economic-financial aspects. The method used is an industrial feasibility study with a descriptive-analytical approach, utilizing primary data on production capacity, machinery requirements, and layout, as well as secondary data from literature and industry standards. Results show a daily production of 115,586 units, COGS of IDR 1,604 per unit, selling price of IDR 2,000 per unit, and profit of IDR 385 per unit. Total fixed costs reach IDR 1.53 billion per month and variable costs IDR 3.33 billion per month. Financial projections indicate a positive net cash flow of IDR 13.26 billion, ROI 24.86%, NPV IDR 84.27 billion, IRR 24%, and B/C ratio 1.9. The project is feasible technically, commercially, and financially, providing added value to local products.
Co-Authors Aditya Wahyu Nugraha Ariyanto, Krisna Asrol, Muhammad Aviliano, Avil Awanis, Zatalini Endo Pebri Dani Putra Jatmiko Eko Witoyo Nainggolan, Willyana Tri Andini Noveliska Br Sembiring, Noveliska Br Oktaviani, Nurul Pangestuti, Martasari Beti Pratama, Borneo Satria Setiawan, Ahmad Dwi Subara, Deni Sylvia, Teny Teguh Wiyono Yogautami, Radya Yunira, Eka Nur'azmi