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All Journal Kinetika Innovative: Journal Of Social Science Research
Nurjanah, Rizki
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Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Energy Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Public Health Other

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VARIASI PRODUKSI BIOETANOL DARI LIMBAH KULIT BUAH-BUAHAN MENGGUNAKAN RAGI Saccaromyces Cerevisiae Nurjanah, Rizki; Aznury, Martha
KINETIKA Vol. 11 No. 2 (2020): KINETIKA 01072020
Publisher : Politeknik Negeri Sriwijaya

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Bioethanol is ethanol made from plants that contain starch, sugar and other cellulosic plants. The general methods used are hydrolysis and anaerobic fermentation methods. This review aims to compare the results of several studies on the manufacture of bioethanol from various raw materials and the treatment of variations in fermentation pH, type of yeast, and fermentation time. Based on the studies that have been carried out, it can be concluded that the first largest yield of bioethanol is found in a study conducted by Gebregergs et al. (2016) showing that bioethanol yield from banana peels of 45.088% ethanol is obtained at an acid concentration of 1.50% v/v. retention time 21.66 minutes. Then the second largest result was found in research according to Demiray et al. (2018) producing a percent ethanol of 44.9% v/v ± 55.58 g/L from pomegranate peel raw material. In a study according to Octria et al. (2019), from raw materials of pineapple peel, a percent yield of bioethanol was 30.15% w/w using hydrolysis and anaerobic fermentation methods through the enzyme Saccaromyces cerevisiae.
Pemanfaatan Bottom Ash Batubara Menjadi Silika Gel Sebagai Absorben Pb+ pada Limbah Industri Minuman di Bayuasin Nurjanah, Rizki; Zamhari, Mustain; Yerizam, Muhammad
Innovative: Journal Of Social Science Research Vol. 4 No. 5 (2024): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v4i5.13628

Abstract

Improving the quality of life and welfare through industrial development in various sectors often results in negative impacts such as production waste. One type of waste produced from coal combustion is fly ash and bottom ash, both of which were categorized as hazardous waste (B3) according to government regulations before 2021. With regulatory changes in 2021, this waste can be utilized more flexibly after obtaining Environmental Approval. This study examines the use of bottom ash as an adsorbent to reduce heavy metals in industrial wastewater. Bottom ash from PT PUSRI Palembang was processed into silica gel using the sol-gel method and NaOH activation, with the liquid waste used coming from the liquid waste of the beverage industry in Banyuasin. The results showed that silica gel successfully made from bottom ash has an adsorption capacity following the Langmuir model, with a value of 1.743 mg/g and an adsorption efficiency of 73.69%. The optimal NaOH concentration was found at a 3 M ratio with an average efficiency of 70.84%.
Co-Authors Martha Aznury Muhammad Yerizam Mustain Zamhari