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Fermentasi Limbah Kepala Ikan Gabus (Channa striata) dengan Batang Pisang Menjadi Pupuk Organik Cair Faqih Sembada Wijayatin; Farhah Kamilatun Nuha; Retno Dewati
Jurnal Serambi Engineering Vol. 9 No. 4 (2024): Oktober 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The fish processing industry often produces large amounts of waste. The abundance of these wastes can be used as liquid organic fertiliser so that it would not become pollution. This research will use cork fish head waste which had 17.72% C-organic; 0.189% nitrogen; 0.126% phosphorus; and 0.041 potassium with banana stalks as additional material which had 15.68% C-organic; 1.35% phosphorus; 2.13% potassium; 0.02 nitrogen to be used as liquid organic fertilizer. This research was carried out in 3 stages. The first was the preparation of the main ingredients, followed by the preparation of the bioactivator solution and then the fermentation process. The fermentation process was carried out in 5 different containers, each containing 10, 20, 30, 40 and 50 ml of bioactivator solution. Samples were taken on days 7, 10, 13, 16 and 19 to test for nutrient content. The results showed that the liquid organic fertiliser from cork fish head and banana stem with the best results and meeting the SNI standards was obtained in samples with 30 ml of EM4 added to it and fermented for 10 days, with a C/N ratio of 12.187% and total macro-nutrients (N + P2O8 + K2O) of 5.887%.
Kinetika Reaksi Sintesis Glukosa dari Limbah Padat Yeast (Yeast Mud) Menggunakan Proses Hidrolisis Asam Dimas Nur Arifianto; Rasendriya; Retno Dewati
Jurnal Serambi Engineering Vol. 9 No. 4 (2024): Oktober 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Glucose is usually used in the production of liquid sugar, syrup and as an alternative energy source such as bioethanol. An alternative material for the production of glucose is to use waste residues that can still be used, such as solid yeast waste (yeast sludge) from PT. Energi Agro Nusantara, which has a relatively high carbohydrate content of 31.55%. This research was conducted in 3 stages. The first stage is the preparation of raw materials, followed by the production of liquid glucose by acid hydrolysis method and the determination of reaction order and reaction rate constant. The hydrolysis was carried out at a constant temperature of 900C, stirring speed of 200 rpm, material ratio of 1:10, HCl concentration: 2.5N; 3N; 3.5N; 4N; 4.5N, and hydrolysis time: 60 min; 90 min; 120 min; 150 min; 180 min. The results of the study showed that the glucose synthesis reaction from yeast sludge solid waste followed a pseudo first order reaction, and the glucose content of the hydrolysis results was influenced by the concentration of HCl catalyst and the duration of hydrolysis, which had a directly proportional effect. The highest glucose content obtained was 26% and the reaction rate constant (k) value was 0.0046 at a concentration of 4.5 N HCl with a hydrolysis time of 180 minutes.
Co-Authors Dimas Nur Arifianto Faqih Sembada Wijayatin Farhah Kamilatun Nuha Rasendriya