8 articles in this issue
Dhias Cahya Hakika,Sarto Sarto,Aswati Mindaryani,Muslikhin Hidayat,Zahrul Mufrodi
Distillery wastewater from the bioethanol industry contains a high level of organic content which can be converted into biogas. However, the presence of toxic compounds in this wastewater could inhibit biogas production. Therefore, prior detoxification of... see more
Prima Astuti Handayani,Idama Kusuma Dewi,Ady Prasetyo
Palm sugar is used as a natural sweetener that is added to food and beverages. The nutritional content in palm sugar can be enriched with the addition of antioxidants derived from red ginger (Zingiber officinale var. rubrum). The antioxidant activity of r... see more
Ferika Indrasari,Buanasari Buanasari
Kedawung (Parkia biglobosa) contains various ingredients such as alkaloids, saponins, tannins, flavonoids, and terpenoids. The flavonoid content in Kedawung is thought to have an antioxidant effect. Antioxidants are able to counteract free radicals that e... see more
sutikno madnasri1974,Muhammad Zakaria,Sukiswo Supeni Edi,Putut Marwoto
The eco-friendly brake composite has been still an interesting issue in the development of brake friction materials. Wastes of S. Macrophylla (mahogany) fruit skin and coal fly ash are available as organic ingredients of bio-composite brakes. In this rese... see more
Ummul Habibah Hasyim,Fatma Sari,Ika Kurniaty,Annisya Ramadhani
Ciplukan contains bioactive substances in the form of flavonoids, saponins, alkaloids, polyphenols, vitamin C, stearic acid, palmitic acid. Bioactive substances from natural ingredients are known to function as immunomodulators that can increase the body'... see more
Nuraini Nuraini,Noridah binti Osman,Erna Astuti
Pyrolysis process using abundantly available biomass waste fabric is a promising, renewable, and sustainable energy supply for bio-oil production. In this study, the pyrolysis of waste biomass determines the highest yield of diverse parameters of material... see more
Noor Hindryawati,Gaanty Pragas Maniam,Irvan Resi Pratama,Rahmat Gunawan,Soerja Koesnarpadi
Sonocatalysis was used to study phenol degradation using a ZnO/WO3 composite. The degradation was assisted by ultrasonic waves at 40 KHz and conducted using the sonocatalysis technique. The degradation percentage was calculated using data from the UV-Vis ... see more
Widi Astuti,Rayhan Mukti Ramadhan,Vista Ayudya Octaviany
Biogas has emerged as a promising alternative to gasoline due to the depletion of fossil energy and environmental concerns. An investigation was conducted to study the technical feasibility of an adsorbed natural gas (ANG) storage system using petung bamb... see more