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Konversi
Published by Universitas Lambung Mangkurat
ISSN : 23023686     EISSN : 25413481     DOI : -
Core Subject : Education,
Education
Arjuna Subject : -
Articles 231 Documents
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MINIMIZING IDLE CAPACITY AND EFFICIENCY COST BY MODIFYING FEEDING AND FINISHING PF-I TO PRODUCE NPK Dea Indiastuti Ramadany; Mu’tasim Billah; Kevin Esmunaldo; Sani Sani
Konversi Vol 11, No 2 (2022): OKTOBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v11i2.14020

Abstract

With the policy of revoking the SP-36 fertilizer subsidy in 2022, an alternative is needed to minimize idle capacity and cost efficiency caused by stopping operations at the Phosphate I Fertilizer Unit. Based on national fertilizer stock data for NPK 15-10-12 fertilizer, there is a gap between the actual stock nationally and the minimum stock. The low actual stock nationally can lead to a scarcity of NPK fertilizer which can affect national food security. So as an alternative solution to solving the problem, the Phosphate I Fertilizer Factory is utilized to be able to produce NPK fertilizer. This problem is solved by using the PDCA Cycle (Plan-Do-Check-Action) method. Based on the data and facts in the field, it is known that the existing equipment condition of the Phosphate I Fertilizer Unit has not been able to produce NPK fertilizer. The results of the project found the best solution to the problem of equipment conditions at the Phosphate Fertilizer Unit I by modifying the feeding system facility which was originally manual to weigher based by installing 3 hoppers, dozometers, BC mixing, and DAP crusher in the Curing 250 Warehouse, then installing coating facilities and coloring NPK fertilizer on the existing cooler in the Phosphate I Fertilizer Unit, making key operating parameters, and conducting an On Job Training scheme for the Phosphate I Fertilizer Unit personnel at the NPK II/III/IV Plant. So with this modification, the Phosphate Fertilizer Factory I is expected to be able to produce NPK fertilizer.
DESIGN OF COMMUNAL WASTEWATER TREATMENT PLANT (CASE STUDY IN DEPOK VILLAGE, TRENGGALEK, EAST JAVA) Ratih Arum Sari; Arqowi Pribadi; Dyah Ratri Nurmaningsih; Sulistiya Nengse; Yustrianti Yustrianti
Konversi Vol 11, No 2 (2022): OKTOBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v11i2.13903

Abstract

Planning for a communal scale Wastewater Treatment Plant (WWTP) in Depok Village, Trenggalek Regency, East Java is needed because most of the wastewater in Depok Village is only treated with septic tanks. This study aims to plan a communal scale WWTP design based on the generation of domestic and non-domestic wastewater in Depok Village. The WWTP planning in this study was carried out based on the results of laboratory test parameters for pH, TSS, BOD, COD, total coliform, fatty oil, and ammonia. Based on the test results, it is known that the parameters exceed the required limits according to the Minister of Environment Regulation No. 68 of 2016 is the parameter of TSS, ammonia, and total coliform. The units that are planned are barscreen unit is planned to have a length of 8.65 m, a width of 2.65 m, and a depth of 3 m. The initial settling basin is planned to have a length of 11 m, a width of 3 m, and a depth of 4 m. The anaerobic biofilter unit is planned to have a length of 15 m, a width of 7.5 m, and a depth of 2.5 m. The aerobic biofilter unit is planned to have a length of 16.5 m, a width of 8.5 m, and a depth of 2 m. The final settling basin is planned to have a length of 37 m, a width of 18.5 m and a depth of 2.5 m. The control body is planned to have a length of 9.5 m, a width of 5 m and a depth of 2 m. Meanwhile, disinfection is planned using a disinfectant pump.
DESIGN OF PACKED TOWER ABSORBER FOR CARBON DIOXIDE ABSORPTION BY POTASSIUM HYDROXIDE ABSORBENT Faisal Huda; Nuril Qomariyah; Kartika Udyani
Konversi Vol 11, No 2 (2022): OKTOBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v11i2.14158

Abstract

Absorpsi merupakan salah satu metode yang digunakan untuk memisahkan gas CO2 dalam suatu campuran gas. CO2 perlu dihilangkan karena akan menganggu suatu proses pabrik dan dapat menyebabkan polusi udara.  Penelitian dilakukan dengan tujuan untuk memperoleh desain kolom absorber tipe packed tower dan mengetahui pengaruh konsentrasi dan laju alir absorben KOH terhadap removal CO2. Tahap pertama yang dilakukan yaitu menentukan desain kolom pada kondisi laju alir CO2 2 L/menit dengan laju alir absorben KOH 0,1N 2 L/menit. Uji kinerja absorber dilakukan dengan variasi laju alir absorben 1 L/menit; 1,25 L/menit; 1,5 L/menit; 1,75 L/menit; dan 2 L/menit pada konsentrasi KOH 0,1 N; 0;3 N; dan 0,5 N. Berdasarkan analisa asidi-alkalimetri diperoleh removal CO2 tertinggi mencapai 95,743% pada laju alir absorben KOH 0,5N sebesar 2 L/menit, pada kolom absorber dengan diameter 5,96 cm dengan tinggi kolom 84,5 cm menggunakan ceramic-rasching ring 13 mm yang diisikan mencapai ketinggian 83,5 cm. Hasil penelitian menunjukkan bahwa peningkatan laju alir volumetrik dan konsentrasi KOH sebagai absorben menyebabkan nilai removal CO2 semakin besar.
DAILY DATA VISUALIZATION OF PLANT III PT PETROKIMIA GRESIK VIA DASHBOARD UP DATE Devita Salsa Gunawan; Erwan Adi Saputra; Faris Harditya Purnama; Sani Sani
Konversi Vol 11, No 2 (2022): OKTOBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v11i2.14018

Abstract

Dashboard is a visual display, numbers and metrics containing all the data that aims to provide information and help users to make the right and fast decisions based on existing data. From here, the idea of a project Up To Date Dashboard "BODATE" came about. A dashboard designed with the concept of Less Input, More Output. The dashboard will continue to be updated and changed every day based on production data and existing field realizations. This dashboard includes an observation of the performance of achieving the production targets of each unit, realization, stock of raws materials and products as well as consumption of raw materials for each unit. The result of this "BODATE" Up To Date Dashboard is that it overcomes the difficulty of finding relationships between data, and the set of daily report numbers that are constantly changing every day just by turning it into a unique but still efficient data visualization display in terms of time. The purpose of this "BODATE" Up To Date Dashboard is to create fast and efficient data visualization in order to overcome problems that exist in the Department of Production Planning and Energy Management (PPPE) and can be implemented, especially in the Work Unit of Planning and Control (Rendal) Production Plant III PT Petrokimia Gresik.
EFFECT OF FLY ASH ON PRODUCTS OF WATER HYACINTH CATALYTIC PYROLYSIS Rinna Juwita; Jefriadi Jefriadi; Khairunnisa Aprilianti; Mitha Amalia; Rinny Jelita
Konversi Vol 11, No 2 (2022): OKTOBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v11i2.15578

Abstract

The use of alternative energy is needed to overcome the availability of fossil energy sources. One alternative energy source is water hyacinth through a pyrolysis process using a catalyst. Fly ash has the potential to be a catalyst given its very low utilization in Indonesia. Utilization of water hyacinth biomass through a pyrolysis process using a fly ash catalyst was carried out to determine the effect of catalyst activation and the amount of the catalyst on the pyrolysis product. The purpose of this study was to determine the optimum amount of catalyst and the effect of catalyst activation on water hyacinth pyrolysis products. The experiment was carried out in an electric pyrolysis reactor equipped with a condenser as a coolant and a thermocouple. Nitrogen gas is fed into the pyrolysis reactor to create inert conditions that prevent sample burning. The crushed water hyacinth samples were put into the reactor with the fly ash catalyst with a catalyst composition of 0%, 5%, 10%, and 15% of the raw material. The process lasted for 1 hour at 500 oC. The liquid product in the form of bio-oil is collected and then its mass and volume are measured. The solid product in the form of charcoal is taken after the pyrolysis process is complete and the reactor reaches room temperature and then its mass is measured. The highest liquid and solid yields were obtained with 10% activated catalyst variations, namely 39.142% for liquids and 45.144% for solids.
The effect of pressure on the concentration of methane and carbon dioxide absorption in biogas Hairul Huda; Revy Aditya; Rivaldo Bodewyn Julian Worotikan; Nurdin Nurdin
Konversi Vol 12, No 1 (2023): April 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v12i1.14680

Abstract

Biogas is playing a vital role in the emerging market for renewable energy. Biogas is an alternative energy that can be used as a substitute for fossil energy. The main composition of biogas is methane gas (CH4) and carbon dioxide gas (CO2) with a small amount of hydrogen sulfide (H2S). Therefore, it is necessary to do treatment to enrich gas methane and reduce CO2 and H2S content in optimizing the use of biogas. Absorption is a CO2 capture technology often used in the chemical industry. A chemical absorption technique using a solvent solution is one of the most widely used techniques to capture CO2. This research uses MDEA (Nmethyldiethanolamine) solvent as an alkanolamine solution dissolved in water. The unit operation usually used to carry out the absorption process is an absorber, and the type of absorber used is a spray column absorber. Simulating variations in pressure on the absorber was conducted in this research. The result of this research is that the increase in pressure will increase the composition percent of CH4 in sweet gas and increase the amount of CO2 absorption in biogas. The best result of absorber pressure is obtained at a pressure of 48 bar. The purity of CH4 and %removal of CO2 in biogas can be solved simply by using the evaluation parameters of the various absorber pressures presented, which we expect to contribute to the biogas industry in the future.
Parameter evaluation of extraction using microwave hydrodistillation ultrasonic-pretreatment on yield of black pepper oil Renova Panjaitan; Nove Kartika Erliyanti; Sandy Buana Putra; Achmad Pemadi Wicaksono; Alza Nadilla Syahrani; Nabila Ayu Amanda
Konversi Vol 12, No 1 (2023): April 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v12i1.14984

Abstract

Black pepper is one of Indonesia's agricultural commodities, contributing foreign exchange to the country. However, the economic value of this commodity has decreased. It is influenced by the lack of diversified black pepper products, which of course, have a higher value than raw material marketing. One product diversification that can be developed is black pepper oil. In obtaining essential oils, appropriate methods and technology are needed so that the resulting product is of high quality and the process is carried out efficiently. The latest methods in extraction that are being developed are microwave and ultrasonic technology. Therefore, in this study, black pepper oil extraction was carried out using the microwave hydrodistillation method, whereas previously, ultrasonic pretreatment was given for the material. In this case, observations were made on the influence of extraction parameters. Based on the research, it was found that increasing the distiller size flask and ambient temperature could increase the percentage of essential oils yield. At the same time, the longer extraction time caused a decrease in yield. Decreasing the material particle size and increasing microwave power could cause an increase in yield up to a certain point. The best results in black pepper oil extraction were obtained under extraction conditions using a distiller size of 1000mL, extraction time of 60 minutes, at an ambient temperature of 30 oC, the particle size of 60 mesh, at a power of 450 W with a yield of 1.056%, with the characteristics of having a clear greenish colour and anRI of 1.480. These specifications comply with ISO 3061:2008 for essential oil from black pepper. Thus, these parameters can be considered in the black pepper oil extraction process to produce marketable products. As a suggestion for further research, modeling, and process scale-up can be developed.
Utilization of water lily activated charcoal as a biofilter in tofu wastewater treatment Noor Khamidah; Muhammad Imam Nugraha; Novita Kurnia Sari
Konversi Vol 12, No 1 (2023): April 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v12i1.15176

Abstract

The purpose of this study was to determine the effect of water lily activated charcoal as a biofilter in tofu wastewater treatment and to determine the effective dose of water lily activated charcoal as a biofilter in tofu wastewater treatment. The results showed that water lily activated charcoal can be used to improve the quality of tofu liquid waste; thus, it can improve the quality of tofu liquid waste which can be seen from the parameters of TSS (Total Suspended Solid). The treatment dose of 2 g of activated charcoal (A3) is the best dose to improve the quality of tofu liquid waste and has complied with the 2014 LH regulation concerning the quality standards of wastewater for the tofu industry, namely the parameters of TSS. The existence of this research can be a reference for further similar research by utilizing organic matter as an alternative in tofu wastewater treatment.
Liquid treatment of food coloring industry waste using coconut and chitosan in removal dyes Defana Makartina Yusuf; Nur Aini Rahma; Dian Yanuarita Purwaningsih
Konversi Vol 12, No 1 (2023): April 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v12i1.14217

Abstract

Liquid waste has a component containing water that has been mixed with chemical compounds. One example of liquid waste containing chemical compounds is wastewater from a food coloring industry. The liquid waste of the food coloring industry has a very strong color density so that it has a negative impact on the environment, therefore it is necessary to treat liquid waste in order to meet the quality standards of wastewater in accordance with East Java Governor Regulation number 72 of 2013. The purpose of this study was to determine the effect of adding dose of coagulant and mass of biosorbent on percent color removal in food coloring industrial wastewater. The results showed that the addition of 35% coagulant and 13% biosorbent resulted in 97% optimal removal of color.
Effectivity CaO/Hydrotalcite catalyst to biofuel microalgae Nannochloropsis sp conversion Yustia Wulandari Mirzayanti; Muhammad Fadkhul Zakariya; Denny Angga Saputra
Konversi Vol 12, No 1 (2023): April 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v12i1.14209

Abstract

Along with the rapid development of the times, the need for energy is also increasing. Fossil energy in Indonesia reaches 95% of Indonesia’s energy needs. For this reason, it is necessary to find a solution to overcome this, one of which is using renewable energy which must also be environmentally friendly. One alternative energy that has been discovered and is still being developed is biofuel. One of the raw materials that can be used for the production of biofuels is the microalgae Nannochloropsis sp. This study aimed to determine the effect of operating time on %yield and FFA of the biofuel produced and the effect of loading catalyst on %yield and FFA of the resulting biofuel. The highest %yield of crude and the lowest FFA were observed at a reaction time of 3 hours and a catalyst loading of 0.45 %wt with values of 47.981 and 0.064, respectively. The lowest %yield of crude and the highest FFA were obtained at a reaction time of 1 hourwith a catalyst loading of 0.4 %wt with values of 25.730% and 0.133, respectively.

Page 22 of 24 | Total Record : 231

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