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Syakdani, Adi
Politeknik Negeri Sriwijaya
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Treatment Optimization of Electrocoagulation (EC) in Purifying Palm Oil Mill Effluents (POMEs) Rusdianasari, R.; Taqwa, Ahmad; Jaksen, Jaksen; Syakdani, Adi
Journal of Engineering and Technological Sciences Vol 49, No 5 (2017)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (552.374 KB) | DOI: 10.5614/j.eng.technol.sci.2017.49.5.4

Abstract

Palm oil mill effluents (POMEs) can contaminate soil, groundwater, and also the water environment. The increasing production of crude palm oil in Indonesia produces an enormous amount of POME waste. Therefore, a method is needed that can be used to purify POMEs. In this paper, an electrocoagulation (EC) method for purification of wastewater and a design to optimize this method are presented. An optimization experiment was performed by varying voltage and process time. The applied voltages were 6, 9, and 12 V and the process time was varied between 30 and 150 minutes. The measured parameters were: COD, BOD5, pH, TSS, lipids, and NH3-N. The result shows that optimum conditions were achieved at a voltage of 12 V and a process time of 150 minutes with COD at 8000 mg/L, BOD5­ at 12000 mg/L, pH at 7.46, TSS at 324 mg/L, lipids at 17.8 mg/L, and NH3-N at 0.65 mg/L. The results are in accordance with environmental quality standards for pure water. This study proves that the proposed EC method is effective in purifying POMEs from pollutants.
ANALISA EKSERGI PADA PRODUKSI NITROGEN SISTEM PRESSURE SWING ADSORPTION (PSA) Syakdani, Adi
KINETIKA Vol. 9 No. 2 (2018): KINETIKA 01072018
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Nitrogen is staple compound in the chemical industry. Nitrogen demand continues to increase every year. Indonesia's nitrogen demand reaches 6% of world demand, and this number is expected to continue to increase. Increased nitrogen demand will also require high nitrogen production. In the production of nitrogen the most commonly used method is cryogenic systems. But in this way a lot of energy is wasted, especially in the conversion process. In an effort to use energy efficiently, non-cryogenic nitrogen production systems were developed. One of them is the Pressure Swing Adsorption (PSA) system, which applies the principle of adsorption.. Factors that may affect the purity of the product are the adsorbate pressure (air) and the adsorbate contact time and the adsorbent. Adsorbent used is Carbon Molecular Sieve (CMS). Compressed air is obtained from the compression process by a compressor that uses electricity as the primary power source. In an effort to optimize the use of energy used, the adsorbat pressure varied from 4.5.6 and 7 bar, while the contact time was varied 1.3. and 5 minutes. Based on the results of the study the most optimal operating conditions have been carried out to produce high nitrogen purity at 4 bar pressure and 5 minutes contact time and the resulting nitrogen purity is 96.2%.The optimum condition of exergy efficiency is 7 bar at 1 minute contact time with 97.079% exergy efficiency. While for the compressor the highest compressor efficiency and the lowest Irreversibility that is at the pressure of 7.1 bar that is efficiency 78.925% and Ic 14.951 kJ/kg
PROTOTIPE ALAT EVAPORATOR VAKUM (EFEKTIVITAS TEMPERATUR DAN WAKTU EVAPORASI TERHADAP TEKANAN VAKUM DAN LAJU EVAPORASI PADA PEMBUATAN SIRUP BUAH MENGKUDU (Morinda citrifolia L.)) Syakdani, Adi
KINETIKA Vol. 10 No. 2 (2019): KINETIKA 01072019
Publisher : Politeknik Negeri Sriwijaya

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Abstract

The prototype of vacuum evaporator unit has a purpose to reduce moisture content of juice by using the minimum temperature at vacuum condition so that the nutritional value of the obtained product will not be vanished. An encountered problem in processing the food products is how to reduce the moisture content. By reducing moisture content, it is able to raise the shelf life of products, avoid the detrimental effect to the unit, and increase the economic value. The syrup is made with the evaporation process at the pressure below the atmospheric pressure subsequently the boiling point of the solvent is decreased. The evaporation process uses vacuum evaporator is done by setting the set point of process control which are the evaporating temperature 50 and 60ËšC within the time of 10, 20, 30, 40, and 50 minutes. The analyzed result shows that the optimum evaporation rate is 0.953 gr vapors/mins with the moisture content of 56.88% at 60ËšC. The operating pressure of this unit is 19 cmHg. In this operating pressure, the boiling point of water is descending so that the evaporation process is safe for the feed which is sensitive to the heat.
POTENSI ANTIOKSIDAN DALAM KELOPAK BUNGA ROSELLA (Hibiscus sabdariffa L.) SEBAGAI ANTI-AGING Malinda, Okta; Syakdani, Adi
KINETIKA Vol. 11 No. 3 (2020): KINETIKA 01112020
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Roselle flower (Hibiscus sabdariffa L.) contain compounds that have anioxidan so it can ward off free radicals. The value of roselle benefit is very wide both for food and health, so the potential of roselle diversification is quite large. The important ingredients found in roselle petals are anthocyanin pigments that act as antioxidants. The purpose of this article review is to know the potential of antioxsidan in roselle flowers (Hibiscus Sabdariffa L.) as anti-aging. Review of this article is using comparative research methods from various sources and from various research journals with a minimum number of 25 research journals. The results of this review suggest that the roselle flower (Hibiscus sabdariffa L.) has potential as anti-aging of the leaves, fruits, and petals of the roselle (Hibiscus sabdariffa L.) has been shown to contain antioxidant.
PENGOLAHAN AIR PAYAU MENJADI AIR BERSIH MENGGUNAKAN METODE ELEKTROKOAGULASI Kaslum, Leila; ., Fadarina; Meidinariasty, Anerasari; Yuliati, Selastia; Syakdani, Adi; Pratama, M.Bagas; Alpitansyah, Rachmad Bayu; Alnafrah, Fenty; Ismareni, Pepi
KINETIKA Vol. 12 No. 1 (2021): KINETIKA 01032021
Publisher : Politeknik Negeri Sriwijaya

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Abstract

The limitation of clean water resources in coastal areas is related to the scarcity of fresh water. Water that has too high a salinity can cause harm if it is used for certain activities, for example, it is dangerous for health when used as drinking water, causing crop failure for agriculture, corrosion for equipment and buildings made of metal elements. In order to be used as clean water and suitable for daily household use, brackish water needs special treatment with the aim of reducing the mineral content in it, especially in reducing salinity levels. For this purpose brackish water treatment has been made into clean water which works based on the electrocoagulation process. The performance test was carried out by filling 10 liters of brackish water into the electrocoagulation reactor and using an electric current of 10 volts, 12 volts and 14 volts for each test. The observation times for each test were 60, 120 and 180 minutes. Measurement of salinity, iron, sulfate and organic substances for each test was carried out using a potentiometer, atomic absorption spectrophotometer, turbidimeter, and titrimetry. The optimum results of the test show that the use of 14 volts of electricity and contact time for 120 minutes can reduce iron levels from 1.41 mg / l to 0.98 mg / l, and sulfate levels from 301.97 mg / l to 235.84 mg. / l, levels of organic substances from 3.05 mg / l to 2.25 mg / l and salinity levels from 16.25 ppt to 10.07 ppt.
EFISIENSI TERMAL PRODUKSI STEAM DITINJAU DARI RASIO UDARA BAHAN BAKAR SOLAR PADA CROSS SECTION WATER TUBE BOILER Ningsih, Aisyah Suci; Syakdani, Adi; Rusnadi, Irawan; Oktaviani, Yustika; Veronica, Febri; Anisya, Jihan Triani
KINETIKA Vol. 12 No. 1 (2021): KINETIKA 01032021
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Cross Section Double Drum Water Tube Boiler is a steam boiler that is used to convert water into steam by heating, where the heat source comes from the combustion of fuel in the furnace. It is said that the Cross Section of the Double Drum Water Tube Boiler is because the tube arrangement in the boiler is made in the opposite direction to the drum, then this time the tool is made of a slope of 65º on the tube with the aim of reducing the force of gravity so that it will speed up the evaporation process, and has two drums. The fuel used in this study uses liquid fuel, namely diesel with the air-to-fuel ratio as a changing variable, while 15 liters of fuel and 75 kg of boiler feed water are fixed variables. The ratio of air to fuel used ranges from 15.78 to 18.16 . From the results of this study, the best response to the performance of the Cross Section Double Drum Water Tube Boiler is the air-to-fuel ratio of 17.57 ,where the boiler efficiency is 61.12%, of saturated steam and 67.18 % of superheated steam with a steam temperature of 151 ℃ and 229 ℃ , the steam pressure has reached the optimum pressure of 5 bar.
PENGUJIAN BERBAGAI AKTIVITAS EKSTRAK AIR ROSELLA SECARA IN VITRO (HIBISCUS SABDARIFFA L.) Malinda, Okta; Syakdani, Adi
KINETIKA Vol. 12 No. 1 (2021): KINETIKA 01032021
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Roselle (Hibiscus sabdariffa L.) is a plant that is often found in various countries and one of them is in Indonesia. The purpose of this review is to find out more about the activity of rosella water extract by testing in vitro. Roselle water extract is more commonly used compared to ethanol roselle extract. The activity of roselle water extract that has been found by in vitro testing is neuroprotective, antioxidant, antidiabetic, melanoma inhibitor, antibacterial, antihypertensi immune response, adipogenesis inhibitor, apoptosis inhibitor and modulation of MCP-1 production.
Treatment Optimization of Electrocoagulation (EC) in Purifying Palm Oil Mill Effluents (POMEs) R. Rusdianasari; Ahmad Taqwa; Jaksen Jaksen; Adi Syakdani
Journal of Engineering and Technological Sciences Vol. 49 No. 5 (2017)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2017.49.5.4

Abstract

Palm oil mill effluents (POMEs) can contaminate soil, groundwater, and also the water environment. The increasing production of crude palm oil in Indonesia produces an enormous amount of POME waste. Therefore, a method is needed that can be used to purify POMEs. In this paper, an electrocoagulation (EC) method for purification of wastewater and a design to optimize this method are presented. An optimization experiment was performed by varying voltage and process time. The applied voltages were 6, 9, and 12 V and the process time was varied between 30 and 150 minutes. The measured parameters were: COD, BOD5, pH, TSS, lipids, and NH3-N. The result shows that optimum conditions were achieved at a voltage of 12 V and a process time of 150 minutes with COD at 8000 mg/L, BOD5­ at 12000 mg/L, pH at 7.46, TSS at 324 mg/L, lipids at 17.8 mg/L, and NH3-N at 0.65 mg/L. The results are in accordance with environmental quality standards for pure water. This study proves that the proposed EC method is effective in purifying POMEs from pollutants.
Production of Disinfectant by Utilizing Eco-enzyme from Fruit Peels Waste Rusdianasari; Adi Syakdani; Muhammad Zaman; Febby Fitria Sari; Nabila Putri Nasyta; Rizka Amalia
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 3 (2021): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.108 KB) | DOI: 10.53893/ijrvocas.v1i3.53

Abstract

Organic waste is waste that contains carbon compounds that come from living things, such as fruit and vegetable waste. However, the community is still not able to manage it optimally, even though organic and non-organic waste can still be processed into useful products. This effective way can be realized through the manufacture of eco-enzymes that can be applied at the household level. Eco-enzyme is a liquid extract produced from the fermentation of vegetable and fruit residues with brown sugar as a substrate. The eco-enzyme has a strong sweet and sour fermented aroma due to the peels of oranges, pineapples, and papayas. This environmentally friendly enzyme can be produced using fruit peel, brown sugar, and water. Eco-enzyme solution when mixed with water, will react and can be used as a liquid disinfectant. Disinfectants commonly used are generally derived from synthetic chemicals in the form of artificial chemicals. One of the natural ingredients that can be used as a disinfectant is eco-enzyme liquid. This study aims to make a disinfectant using an environmentally friendly enzyme liquid, namely eco-enzyme. The method used in this research is a mixed method of fermentation of orange peel waste, pineapple and papaya, brown sugar, and water with a ratio of 3:1:10. Analysis for eco-enzyme pH, and Phytochemicals, while for disinfectants include pH, total phenol content with UV-Vis Spectrophotometer, hard water emulsion stability, and antibacterial test. All samples of the disinfectant product met the requirements of SNI 06 – 1842 of 1995, besides that, the best disinfectant product was found in a ratio of 1:10 which could reduce bacterial growth.
Effect of Concentration of NaOH and H2SO4 Catalysts on Hydrogen Gas Production Efficiency Diah Iswandari; Idham Mahenri; Yohandri Bow; Adi Syakdani; Robert Junaidi
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 4 (2022): IJRVOCAS - Special Issues
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (467.462 KB) | DOI: 10.53893/ijrvocas.v1i4.73

Abstract

Indonesia has an ocean area of ​​5.8 million km2, water is the event of the decomposition of water compounds (H2O) into hydrogen gas (H2) and oxygen (O2) by using an electric current through water. In this study, the electrolysis of water at an electrolytic concentration containing NaCl can take place quickly with various catalysts of NaOH, and H2SO4 with concentrations of 0.1M, 0.25M, 0.5M, 0.75M, and currents of 15A, 25A and 35A. From the results of the study, it was found that the greater the current and the concentration of the catalyst, the greater the volume of gas produced and the efficiency of the flow, and a significant effect. The highest hydrogen gas produced was 0.4745 L at a concentration of 0.75M with a current of 35A for a NaOH catalyst and with a H2SO4 catalyst, gas with a volume of 0.48823L was produced at a current of 35A and a concentration of 0.75M and the highest current efficiency at a current of 35A the highest efficiency at a concentration of 0.75M was 89.354% for the NaOH catalyst, and the H2SO4 catalyst obtained the highest current efficiency at a concentration of 0.75M, which was 43.325%.
Co-Authors ., Fadarina Agus Manggala Ahmad Taqwa Alnafrah, Fenty Alpitansyah, Rachmad Bayu Anerasari Meidinariasty Anisya, Jihan Triani Arizal Aswan Chantika, Nyimas Chyntya Daffa Alidina Diah Iswandari Dwi Okta Larassakti Ericx Arga Febby Fitria Sari Febby Fitria Sari Fithra Malvarinda Fitria Nur Anissa Hafiza, Natasya Hilwatullisan Hilwatullisan, Hilwatullisan Ibnu Hajar Ica Monika Idha Silviyati Idham Mahenri Indah Purnamasari Indah Purnamasari Ira Wahyuning Thias Irawan Rusnadi Ismareni, Pepi Jaksen M.A K.A Ridwan Kaslum, Leila Liana Aprilayonda Malinda, Okta Meilianti Miranda Dwi Cendani Muhammad Taufik Muhammad Zaman Muhammad Zaman Nabila Putri Nasyta Nabila Putri Nasyta Nadia Yulianti Nasyta, Nabila Putri Ningsih, Aisyah Suci Oktaviani, Yustika Pratama, M.Bagas R. Rusdianasari Rizka Amalia Rizka Amalia Rizka Amalia Robert Junaidi Rusdianasari Rusdianasari Rusdianasari Rusdianasari Rusdianasari Rusdianasari Rusdianasari Sari, Febby Fitria Selastia Yuliati Selastia Yuliati Siti Chodijah Sofiah Sri Murda Niati Supraptiah, Endang Tahdid Veronica, Febri Yohandri Bow Yohandri Bow Zaman, Muhammad Zurohaina Zurohaina Zurohaina, Zurohaina