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Konversi
Published by Universitas Lambung Mangkurat
ISSN : 23023686     EISSN : 25413481     DOI : -
Core Subject : Education,
Education
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Articles 10 Documents
 1 
Search results for , issue "Vol 10, No 1 (2021): April 2021" : 10 Documents clear
EFFECT OF BOTTLE CAP SHAPE AS AEROBIC BIOFILTER MEDIA TO TREAT SHRIMP COLD STORAGE WASTEWATER Arlini Dyah Radityaningrum; Siti Rukmana; Ro’du Dhuha Afrianisa
Konversi Vol 10, No 1 (2021): April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i1.9749

Abstract

Industri penyimpanan udang menghasilkan limbah cair dengan konsentrasi BOD5 dan COD yang belum memenuhi Peraturan Gubernur Jawa Timur Nomor 72 Tahun 2013. Konsentrasi BOD5 dan COD adalah 411 mg/L dan 1580,6 mg/L. Biofilter aerobik merupakan alternatif pengolahan limbah cair industri penyimpanan udang. Tujuan penelitian ini adalah untuk mengkaji pengaruh bentuk tutup botol sebagai media biofilter aerobik dalam menurunkan konsentrasi BOD5 dan COD pada limbah cair industri penyimpanan udang. Penelitian ini dilakukan pada skala laboratorium dengan reaktor biofilter aerobik yang beroperasi secara batch. Variasi bentuk media yang digunakan adalah bentuk media tutup botol berlubang dan tidak berlubang. Hasil penelitian menunjukkan bahwa bentuk media berlubang memberikan efisiensi penurunan konsentrasi BOD5 dan COD lebih tinggi daripada media tidak berlubang. Bentuk media berlubang maupun tidak berlubang tidak memberikan pengaruh yang signifikan terhadap konsentrasi BOD5 dan COD pada efluen biofilter aerobik. Konsentrasi BOD5 dan COD efluen biofilter aerobik adalah 68,2 mg/L dan 175,6 mg/L dengan media berlubang, serta 75 mg/L dan 208,2 mg/L dengan media tidak berlubang. Konsentrasi BOD5 dan COD telah memenuhi baku mutu dalam Peraturan Gubernur Jawa Timur Nomor 72 Tahun 2013.
MASS TRANSFER COEFFICIENT OF EXTRACTION TANNIN COMPOUNDS FROM PAPAYA LEAVES WITH 96% ETHANOL SOLVENT Devri Eko Nurwahyuwono; Viola Eka Afrienty; Soemargono Soemargono; Nove Kartika Erliyanti
Konversi Vol 10, No 1 (2021): April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i1.10414

Abstract

Papaya leaves contain antibacterial compounds such as flavonoids, terpenoids, alkaloids, tannins, and saponins.. Tannins are compounds that are often used as antibacterial, antioxidant, pest control, plant fungi, tanners and as a corrosion inhibitor.In this study, the value of the mass transfer coefficient was determined. This study used two varied operating conditions, namely stirring rotational speed (100, 200, 300 rpm) and extraction time (30, 60, 90, 120, and 150 minutes). The extraction process is carried out using a stirred extractor at a temperature of 65 ° C.The value of the mass transfer coefficient obtained is 0.00004 second-1 (100 rpm), 0.00005 second-1 (200 rpm), and 0.00007 second-1 (300 rpm) for the best concentration obtained at 150 minutes with speed turn the stirrer 300 rpm
STUDY OF THE POTENTIAL OF CO2 ABSORPTION BY VEGETATION BASED ON NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI) VALUE Ahmad Jauhari; Mufidah Asy’ari; Ria Rahmadanti; Nafta Hazama; Niken Larasati Kusuma Dewi; Andre Toberto Martias
Konversi Vol 10, No 1 (2021): April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i1.9760

Abstract

Abstrak: Peningkatan gas rumah kaca (GRK) sebagai salah satu penyebab perubahan iklim. Salah satu gas yang berperan pada GRK adalah karbon dioksida (CO2). Kandungan CO2 di atmosfer diduga meningkat sekitar 0.03-0.06% dan menyebabkan kenaikan suhu sebesar 4.25°F (Fardiaz 1992). Hutan berperan dalam upaya peningkatan penyerapan CO2. Sebaran dan potensi hutan dapat diketahui dengan pendekatan nilai NDVI (Normalized Difference Vegetation Index) yang telah diolah dari data citra satelit LANDSAT-8 liputan tahun 2018. Penelitian ini dilakukan di areal Kota Banjarbaru. Penelitian ini bersifat kuantitatif. Metode yang digunakan adalah metode survey. Analisa data yang digunakan adalah analisa NDVI. Hasil penelitian pada area contoh menunjukkan potensi daya serap CO2 oleh tanaman tingkat tiang dan pohon di Banjarbaru (seluas 29.716 ha) pada kerapatan tegakan sangat rendah (5.200,9 ha), rendah (6.346,7 ha) rendah hingga sedang (1.019,2 ha) berturut-turut dari 230.502 tonC, 408.696 tonC,  dan 175.077 tonC. Secara keseluruhan, daya serap CO2 oleh tanaman pada tingkat tiang dan pohon pada berbagai kerapatan adalah sebesar 814.276 ton Carbon.Kata Kunci: NDVI, Serapan Karbon, GRK, CO2.
ISOLATION OF CLOVE ESSENTIAL OIL BY FERMENTATION PROCESS Khurotul Ainiyah; Fita Andriyani; Soemargono Soemargono; Nove Kartika Erliyanti
Konversi Vol 10, No 1 (2021): April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i1.10415

Abstract

Clove essential oil is processed product of clove leaves which is used as perfumes and medicines. In general, the method used to extract clove leaf essential oil is the steam distillation method. This method has not maximized the yield essential oils produced because a lot of essential oils are still trapped in plant tissues. Modification of the essential oil isolation methods to produce more yields needs to be done, one of which is the fermentation method with the help Rhizopus oligosporus before the distillation process is carried out. The fermentation method is able to destroy the oil tissues on the leaves using enzymes produced by rhizopus oligosporus. The aims of this study were to isolate the essential oil clove leaves and look for the effect of the mass and fermentation time on the yield and content of clove leaf essential oil compounds produced. The results showed that the isolation  essential oils using fermentation methods was successfully carried out, the mass and fermentation time had a significant influence on the yield and content of essential oil chemical compounds. The best result was obtained at a mass of 35 grams with a fermentation time of 36 hours with a yield 0.32% and the content eugenol, caryopillene compounds obtained respectively at 93.43% and 2.28%.
EFFECT OF NAOH CONCENTRATION AND RESIDENCE TIME ON THE CONVERSION OF REMOVAL OF Ca2+ AND Mg2+ IN SEAWATER CONTINUOUSLY USING AN BAFFLED REACTOR Dita Nurmala Tristanti; Harishul Ulum; Soemargono Soemargono; Nove Kartika Erliyanti
Konversi Vol 10, No 1 (2021): April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i1.10339

Abstract

The aims of this study were to determine the effect NaOH concentration and residence time on the conversion of calcium (Ca2+) and magnesium (Mg2+) removal as impurities. The concentration of NaOH used in this study were 0.05N, 0,1N, 0.15N, and 0,2N. The reactor used in this study is an baffled reactor equipped with air as a stirrer with air flow rates of 10000, 15000, 20000, 25000, and 30000 ml/minute. The ratio between the flow rate of seawater toward the flow rate of NaOH solution in this study was 85ml/minute : 25ml/minute.The results showed that the NaOH concentration and residence time had a significant effect on the conversion of removal of (Ca2+) and magnesium (Mg2+) impurities. The best results were obtained at 0.25N NaOH concentration, residence time of 13,08 minute, and gas flow rate of 30000ml/minute with removal conversion of calcium (Ca2+) of 73.083% and magnesium (Mg2+) of 89.621%.
EFFECT OF STIRRING SPEED ON CADMIUM (Cd) METAL ADSORPTION FROM SASIRANGAN LIQUID WASTE BY RICE HUSK ACTIVATED CARBON Isna Syauqiah; Desi Nurandini; Nopi Stiyati Prihatini; Rizki Azkia Simanjuntak
Konversi Vol 10, No 1 (2021): April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i1.9916

Abstract

South Kalimantan is one of the textile industry producers, which is Sasirangan industry.The traditional fabric-making process involves chemicals as the production process. Sasirangan liquid waste contains pollutants that do not meet the requirements for disposal into the environment, including cadmium (Cd). Adsorption process is an effective method to reduce heavy metal concentrations in liquid waste. This study aims to determine the potential of rice husk activated carbon in adsorbing Cd metal from  sasirangan liquid waste and to analyze the effect of stirring speed on the adsorption process. The rice husks that had been carbonized were then activated chemically and physically. Chemical activation process was carried out by adding chemical compound HCl which was immersed for 24 hours. Furthermore, it was physically activated in the furnace for 45 minutes at 4500C. In case to get optimum result, the effect of stirring speed on the adsorption process was studied. The stirring speed determines the rate of adsorbent and adsorbate contact time. The higher the stirring speed, the higher the decrease in Cd content because adsorbate absorption process by  adsorbent is getting better. The greatest decrease in Cd concentration was by carbon that had been activated  with a stirring speed of 90 rpm where the remaining Cd content in the sample was 0.018 mg / L.
BRIQUETTES FROM ACACIA SAWDUST AND COCONUT HUSK WITH RUBBER GUM ADHESIVE Hesti Wijayanti; Ruby Adijaya; Gusti Muhammad Misuari
Konversi Vol 10, No 1 (2021): April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i1.9861

Abstract

Ketersediaan sumber energi utama dari bahan bakar fosil yang sangat terbatas, menyebabkan perlu adanya pengembangan sumber energi alternatif sebagai upaya pemenuhan konsumsi energi yang semakin tinggi. Sumber energi alternatif yang dapat diperbaharui di Indonesia cukup banyak, diantaranya adalah biomassa. Karena rendahnya berat jenis biomassa meyebabkan timbulnya masalah dalam pengemasan dan pengangkutan, oleh karena itu proses pembuatan briket merupakan langkah yang tepat dalam mengatasi masalah tersebut. Proses pembuatan briket menggunakan bahan baku berupa serbuk gergaji dan serabut kelapa. Kedua bahan tersebut dipilih karena bahannya mudah didapat dan harganya yang murah. Kedua bahan tersebut diarangkan pada suhu 500 oC selama 240 menit. Variasi yang digunakan adalah komposisi serbuk gergaji dan serabut kelapa yaitu 100, 50:50, 70:30 dan 30:70 dan komposisi perekat getah karet yaitu 30%, 30% dan 50%. Briket kemudian dilakukan pengujian yaitu uji kadar air, kadar abu, volatil matter, fixed carbon, uji kerapatan dan uji kalor. Berdasarkan hasil yang diperoleh, maka didapatkan Komposisi briket terbaik adalah 100% serbuk gergaji berdasarkan uji Fixed Carbon dan Volatil Matter. Sedangkan berdasarkan uji kadar air dan kadar abu, komposisi terbaiknya masing-masing adalah 0:100 dan 30:70. Komposisi perekat terbaik adalah 30% berdasarkan uji Kadar air, Fixed Carbon dan Volatil Matter. Sedangkan berdasarkan uji kadar abu, komposisi terbaiknya adalah 50%.
UTILIZATION OF TOFU LIQUID WASTE INTO BIOGAS: REVIEW Lukhi Mulia Shitophyta; Sarifa Kaisupy; Indah Puspita Sari
Konversi Vol 10, No 1 (2021): April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i1.10033

Abstract

Tofu production produces by-products in the form of liquid waste and solid waste. Tofu liquid waste which contains organic compounds has not been able to be managed properly. Industry owners only disposed of wastes into the environment. It causes water pollution and unpleasant odors around the tofu industry. One of the solutions to reduce environmental pollution is to utilize tofu liquid waste as alternative energy, namely biogas. The management of tofu liquid waste into biogas for the household scale tofu industry can use a fixed bed reactor, batch scale anaerobic reactor, and anaerobic sludge blanket (UASB) up-flow reactor. The UASB reactor is the best reactor for processing tofu liquid waste into biogas on a household scale. The volume of biogas produced by the UASB reactor was 11.115 liters, while the volume of biogas produced by the fixed bed reactor and batch scale anaerobic digester reactor was 3.5 liters and 1.525 liters, respectively.
STUDY OF THE UTILIZATION OF PALM OIL INDUSTRY LIQUID WASTE An Nisa Fitria; Vandhie Satyawira Gunawan; Mardiah Mardiah
Konversi Vol 10, No 1 (2021): April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i1.10146

Abstract

Palm oil is one of the plantation crops that have high economic value and is growing rapidly. The wider the area of oil palm plantations in Indonesia, the more palm oil mills will process palm fresh fruit marks and produce waste from processed palm oil, namely solid waste and liquid waste. Each tonne of fresh fruit bunches (FFB) processed at the plant will potentially leave waste of about 23% empty palm oil, 4% wet decanter solid, 6.5% shell, 13% fiber, and 50% liquid waste. This review will discuss the utilization of palm oil mill liquid waste (LCPKS) which is organic material that still contains many benefits such as nutrients, therefore the application of liquid waste is an effort to recycle some of the nutrients (recycling nutrients) which is followed by harvesting fresh fruit bunches (FFB) from oil palm so that it will reduce the cost of fertilization which is classified as very high for oil palm cultivation. During the processing of oil palm fruit into palm oil in the palm oil industry, the remaining process is obtained in the form of liquid waste. If done properly, the liquid waste of the palm oil industry is considerable potential and can increase the added value of waste itself.Keywords: liquid waste industry, palm oil, utilization  
ANOVA APPLICATION TO ASSESS THE EFFECT OF TEMPERATURE ON VALUE AND YIELD ON LIQUID FUEL FROM HDPE Nurull Fanani; Eky Novianarenti; Erlinda Ningsih; Kartika Udyani; Ari Prayitno; Denny Angga Saputra
Konversi Vol 10, No 1 (2021): April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i1.10340

Abstract

Proper processing to overcome the abundance of plastic waste is needed. Currently, pyrolysis technology is one method that can overcome plastic waste. Pyrolysis is a thermochemical process, which breaks down long alkyl chains into hydrocarbons at high temperatures. This study aims to determine the effect of temperature on yield and heating value using the analysis of variance (ANOVA) method. The pyrolysis of plastic waste is carried out with HDPE plastic material. The pyrolysis process is carried out in a reactor with 50 grams of feed at various temperatures of 500, 550, 600 and 650⁰C. The conclusion that can be drawn from this research is that there is a decrease in yield and calorific value with increasing temperature. The results of the analysis concluded that temperature had an effect on the yield produced and the calorific value of the product. The best yield was obtained at 35.86% and a heating value of 10530.461cal / g at a temperature of 100oC. Based on the results of data analysis using the ANOVA method, it was found that the experimental hypothesis was that temperature had an effect on yield and calorific value.

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