Viqry Pramananda

Sustainable microwave-assisted extraction of cinnamaldehyde-containing extract from cinnamon bark: Process selection, kinetic modelling, and environmental impact analysis

Risma Fazillah, Rosdanelli Hasibuan, Erni Misran, Aga Nugraha et autres

ABSTRACT The cinnamon ( Cinnamomum burmannii ) bark extract contains cinnamaldehyde, which has beneficial applications across various sectors. This extract can be obtained rapidly using microwave-assisted extraction (MAE), thereby improving yield while minimizing solvent use and extraction time. This study investigates the …

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Solid desiccant-based dehumidification drying for herbal plants: a comprehensive review on drying performance, kinetics, and product quality

Viqry Pramananda, Rosdanelli Hasibuan

Abstract Drying is one of the most crucial post-harvest stages in herbal plant processing because it determines the stability of bioactive compounds and the quality of the final product. Conventional drying methods often degrade thermolabile active compounds due to excessively high temperatures …

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Preliminary Study of Silica Extraction from Bottom Ash under Ultrasonic Irradiation

Erni Misran, Maya Sarah, Kelvin Hadinatan, Norazwina binti Zainol et autres

Abstract The presence of industrial solid waste, such as bottom ash, has become a serious issue, as it has so far been stockpiled rather than optimally utilized. Bottom ash contains silica that can be extracted and converted into value-added products. This study …

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Experimental investigation of gambir (Uncaria gambir) leaves drying using flat-bed dryer powered by biomass pyrolysis reactor

Rosdanelli Hasibuan, Erni Misran, Dini Wahyuni, Viqry Pramananda et autres

ABSTRACT Gambir is one of the leading agricultural commodities of North Sumatra Province, Indonesia. One of the post-harvest processing steps for gambir leaves is drying. In this work, a flat-bed dryer (FBD) powered by a biomass pyrolysis reactor has been studied for …

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Comparative study on the quality and drying kinetics of temulawak by open-sun drying and biomass pyrolysis-integrated flat-bed dryer

Rosdanelli Hasibuan, Juliza Hidayati, Muhammad Khuwailid, Thiodorus Marvin Tjandra et autres

Temulawak is a medicinal plant which is known for its active compound, curcumin. To extend its shelf life, freshly harvested rhizomes are typically subjected to drying to reduce their moisture content. However, the drying process must be carefully controlled to prevent curcumin …

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The Potential of Oil Palm Solid Waste in Industrial Processes to Support Sustainable Industrial Growth: Theory and Case Studies

Renita Manurung, Hamidah Harahap, Rosdanelli Hasibuan, Halimatuddahliana Nasution et autres

The Potential of Oil Palm Solid Waste in Industrial Processes to Support Sustainable Industrial Growth: Theory and Case Studies explores the immense potential of oil palm waste in supporting sustainable industrial practices. Focusing on Indonesia, this book provides an innovative methods of …

Preliminary study of sugarcane bagasse-derived hydrochar production in acidic condition

Erni Misran, Abdul Hadi, Maya Sarah, Okta Bani et autres

Response surface methodology to optimize the yield of sugarcane bagasse-based hydrochar

Viqry Pramananda, Rosdanelli Hasibuan, Erni Misran

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Development of bioplastics based on foxtail millet (Setaria italica) seed starch using CaCO3 as a filler and glycerol as a plasticizer through melt intercalation method

F Hamdi, Muhammad Ferdyansyah Hasugian, Afiifah Radhiyatullah, Muhammad Hendra Sahputra Ginting et autres

Starch-based bioplastics have attracted significant attention as a promising alternative to conventional plastics. One potential starch source for bioplastic production is foxtail millet (Setaria italica) seed starch. However, starch-based bioplastics exhibit low mechanical strength and high hydrophilicity, necessitating the addition of fillers …

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Drying performance of temulawak using flat-bed dryer integrated with pyrolysis reactor

Rosdanelli Hasibuan, Juliza Hidayati, Muhammad Khuwailid, Thiodorus Marvin Tjandra et autres

Abstract Temulawak is a traditional Indonesian herbal plant that contains curcumin as its main active compound. Post-harvest handling of temulawak can be carried out through drying, which aims to reduce its moisture content and extend its shelf life. However, the drying of …

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One-step process of glycerol purification by adsorption using passion fruit peel-based activated carbon

Erni Misran, Bangkit Kali Syahputra Sipahutar, E Sundari, Viqry Pramananda

The purification of glycerol from biodiesel production is essential due to its high economic value. Previous studies have applied multi-step processes which significantly increase operating costs. In this study, a one-step process of glycerol purification was performed through adsorption using passion fruit …

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Characteristics of natural rubber latex-modified asphalt: A short review

Viqry Pramananda, Hamidah Harahap, Muhammad Hendra Sahputra Ginting

Abstract Asphalt has been widely used in the field of road pavement. However, increasing traffic volume and warm weather over a long period can increase asphalt damage and reduce the asphalt’s lifespan. Asphalt damage can be overcome using polymer-modified asphalt (PMA). The …