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All Journal KOVALEN: Jurnal Riset Kimia JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya FLUIDA Jurnal Rekayasa Hijau International Journal of Applied Technology Research Jurnal Teknik Kimia dan Lingkungan
Muhari, Emma Hermawati
Chemical Engineering Department, Politeknik Negeri Bandung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Journal : FLUIDA

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Pemanfaatan Limbah Lumpur IPAL Proses Biologi Sebagai Bahan Bakar Alternatif dalam Bentuk Briket Aldy Darmansyah Putra; Wildan Nurfalah; Emma Hermawati Muhari; Muchtar Gozali
Fluida Vol 15 No 2 (2022): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v15i2.4522

Abstract

Industrial WWTP sludge has not been used properly, especially biological process WWTP sludge can be used as an alternative fuel in the form of briquettes. The purpose of this study was to determine potential utilization of biological process WWTP sludge as briquettes, and to determine the effect of adding variations charcoal to the quality of briquettes. The biological process WWTP sludge was obtained from the Trio Food, Cianjur. The dried sludge has a calorific value 2468 cal/g. The research methodology includes material drying, size reduction (250 μm), mixing, molding, and briquette drying. Briquettes are made with variations in the addition of 30%, 40%, 50%, 60%, 70% charcoal. The results of the study showed that the addition of charcoal resulted increase in the water content, fixed carbon, and calorific value of briquettes as well decrease in ash content, and volatile matter. The highest calorific value in the variation of the addition charcoal is 70% at 3819 cal/g, the value still does not meet SNI 1/6235/2000 (standard for wood charcoal briquettes). The biological process WWTP sludge has potential to be used as fuel in the form of briquettes with the addition of coconut shell charcoal and carbonized coal.
Determination Of Optimum Drying Condition On Flavonoid Content Of Ficus Carica L. Leaves Using Tray Dryer Emma Hermawati; Yusmardhany Yusuf; Alfiana Adhitasari
Fluida Vol 16 No 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4401

Abstract

This research aims to find out the characteristics of Ficus carica L. drying process using a tray dryer and determine the effect of temperature and drying time on Ficus Carica L. flavonoid content using a tray dryer to obtain Ficus carica L. herbal leaf tea which is high in antioxidants. At the experimental stage, the water content of fresh leaves of Ficus carica L. were determined, so the water content is 74 ± 1.11% (wet base), then dried using a tray dryer at 35; 40; 45; 50; and 55oC, with a variation of the drying air flow rate of 1.3; 1.6; 1.9; 2.2; and 2.4 m/s. The optimum temperature and drying air flow rate are 50oC and 1.9 m/s since the highest flavonoid content was obtained at those condition as much 0.78 ± 0.001 gram QE/100gram extract. Dried products which packaged in tea bags have a content of 23.60% carbohydrate, total fat 3.50%, protein 5.35%,antioxidant 154.25 ppm and calorific value of 1430 Kcal/100 grams. It can be concluded that Ficus carica L. drying process using a tray dryer can be used to produce herbal leaf tea which is high in antioxidants and flavonoid content.
Adsorption of Methylene Blue Using Activated Carbon Bioadsorbent Coffee Grounds and Reed Grass Without Flow Rate Hidayatulloh, Irwan; Kurnia, Dianty Rosirda Dewi; Anggorowati, Heni; Muhari, Emma Hermawati; Kharisma, Luthfiana; Sari, Radianti Novita; Paramitha, Tifa; Sihombing, Rony Pasonang
Fluida Vol. 17 No. 2 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i2.6269

Abstract

Methylene blue adsorption research has been conducted using bioadsorbents from activated carbon of coffee grounds and reeds. Coffee grounds and reeds contain carbon and cellulose that are effective for binding dyes. This study aims to determine the characteristics of activated carbon from coffee grounds and reeds based on SNI-06-3730-1995 and assess the color reduction of wastewater referring to the Decree of the Minister of Environment No. 51/MENLH/1995, which sets the maximum methylene blue content in industrial wastewater at 5-10 mg/L. The research method includes bioadsorbent preparation, characterization, and adsorption process with UV-Vis spectrophotometric analysis. Mass ratio variation was conducted on each adsorbent at each contact time variation and methylene blue concentration variation. The results of the analysis showed that the activated carbon of coffee grounds and reeds fulfills SNI-06-3730-1995 which is characterized by values that are below the maximum value in each parameter. The effectiveness of methylene blue adsorption by coffee grounds and reeds activated carbon reached 98.15% at a ratio of coffee grounds and reeds activated carbon 0:1 (w/w) for 120 minutes at a concentration of 25 mg/L. The adsorption capacity using the Freundlich isotherm method on reed activated carbon was 1.100 mg/g and coffee grounds activated carbon was 1.019 mg/g. The adsorption process of coffee grounds and reeds activated carbon has no effect on the carbon and cellulose structure of coffee grounds and reeds contained in activated carbon, namely O-H, C-H, C=C, and C=O.
Co-Authors Aldy Darmansyah Putra Alfiana Adhitasari Bambang Soeswanto Bambang Soeswanto Budiastuti, Herawati - Hariyadi, Tri Haryadi - Herawati Budiastuti Hidayatulloh, Irwan Kharisma, Luthfiana Kurnia, Dianty Rosirda Dewi Luthfiana Nurfauziah Marlina, Ari Muchtar Gozali Ngatin, Agustinus Ninik Lintang Edi Wahyuni Nurcahyo Paramitha, Tifa Permanasari, Ayu Ratna Pullammanappallil, Pratap Ramadhani, Laily Isna Retno Indarti Ririn Rismawati Rispiandi Rispiandi Robby Sudarman Salsabila Nisrina Junaedi Sari, Radianti Novita Sihombing, Nova Sihombing, Rony Pasonang Sudrajat Harris Abdulloh Unung Leoanggraini Widiastuti, Endang Wildan Nurfalah Wina Maulida Yulistiani, Fitria Yunus Tonapa Sarungu Yusmardhany Yusuf Yusmardhany Yusuf Zulfa, Salma Indana