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Muhamad Maulana Azimatun Nur
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Eksergi: Chemical Engineering Journal
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
ISSN : 1410394X     EISSN : 24608203     DOI : https://doi.org/10.31315
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Eksergi is an open-access, peer-reviewed scientific journal that focuses on research and innovation in the fields of energy and renewable energy. The journal aims to provide a platform for scientists, researchers, engineers, and practitioners to share knowledge and advancements that contribute to sustainable development and energy transition. In addition to energy topics, the journal also accepts high-quality manuscripts related to, but not limited to, the following areas: Separation processes Bioprocesses related to food, energy, and environmental applications Wastewater treatment and resource recovery Process optimization and intensification Carbon capture, utilization, and storage (CCUS) Chemical reaction engineering and reactor design Life cycle assessment (LCA) and sustainability evaluation Process Design and Control Engineering Process Simulations Process System Engineering The journal welcomes original research articles, reviews, and short communications that demonstrate novelty, scientific rigor, and relevance to chemical engineering and interdisciplinary applications.
Arjuna Subject : Energi (semua kategori) - Energi Terbarukan, Keberlanjutan dan Lingkungan
Articles 301 Documents
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Pengaruh Penambahan Oksidator Kalium Bichromat pada Pengambilan Minyak Laka Harsa Pawignya
Eksergi Vol 10, No 2 (2010): Versi Cetak
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v10i2.334

Abstract

Cashew trees have been planted in Indonesia. The yield of these trees has been utilized by many people as snack that is delicious and special, while their skin is often been thrown away, so becoming waste, although they can be utilized. Laka oil (CNSL) is a liquid in cashew skin that has economic value, such as its utilization in glue industry, varnish, synthetic resin, insecticide, fungicide, paint, brake lining and clutch plate.  In this  study , the taking of laka oil from cashew was conducted by using press hydraulic and soxhlet with petroleum ether solution. After obtaining laka oil, Calium Bichromate oxidator was added to improve the quality of laka oil obtained before. Variables studied were the effect of material water content, pressing pressure, the time of pressing on oil weight obtained and the number of Calium Bichromate on oil resin content.   From this study , with material of 100 grams it obtained the best condition on material water content of  7,5 % , pressing pressure of 450 kg/ cm2 , pressing time of 20 minuts, and the oil obtained was 8,5747 grams.
Standards Practical Tools in Dealing with Climate Change Biatna Dulbert T
Eksergi Vol 10, No 2 (2010): Versi Cetak
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v10i2.342

Abstract

Drastic climate change is becoming an increasingly serious threat to the survival of living beings on this planet. Various effects have been caused by climate change such as rising temperatures, floods, rising sea level, the uncertain season and other radical changes. Other than forest destruction, as well as industry and transportation use fossil fuels contributed in exacerbating climate change. Indonesia, have adopted identical to the four Green House Gases (GHG) into the SNI via reprints. As a developing country and the condition of Indonesia's forests and peatland in the tropics, it is more easy going deforestation and degradation. Indonesia is concentrated to develop standards in deforestation field based decreased functions of tropical rain forests as carbon sinks are big enough, not to mention the peatland carbon stocks that have high potential around 36 Gton CO2 from 22 million hectares only. The development of ISO standards in measurements and calculations the Greenhouse Effect, Product Recycling, Promoting Environmental good, Energy Efficiency, Consumer Aware Environmental, very useful and contribute to tackle climate change significantly with the implementation of international standards. The most important thing now is how far the destruction of nature caused by human habits that are not environmentally friendly. Increasing understanding about the scale of change needed to tackle global warming, government, business and civil society should be able to perform the necessary steps and face the need to work in partnership to address such a change. In the long term the benefits of addressing climate change will far outweigh the impact costs . But in the short term, governments, business, and civil society will be more willing to bear those costs if they know their counterparts and competitors use standards, as a practical tool in dealing with climate change.
Evaluation of C/N Ratio in Spirulina platensis Cultivation using Molasses Addition as Organic Carbon Source Tutik Muji Setyoningrum; Viska A.W.; Annisaturraihan A; N Islamy Putra; Muhamad Maulana Azimatun Nur
Eksergi Vol 11, No 2
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v11i2.375

Abstract

Growth of Spirulina platensis requiers nitrogen, phosphate, and carbon. Urea is used as source of nitrogen, TSP as source of phosphate, and sodium bicarbonate (NaHCO3) as source of carbon.  The purpose of this research was to evaluate C:N ratio of medium using different concentration of molase and urea addition as replacement of commercial medium. Spirulina platensis was cultivated  as a control consist of 1500 ppm NaHCO3 as source of carbon, 80 ppm urea as source oh nitrogen, 20 ppm TSP (Triple Super Phosphate) as source of phosphate, 1 ppm FeCl3 and 50 µg/l B12 vitamin as source of micronutrients. Spirulina platensis was cultivated in 2-liter of erlenmeyer flask with variation composition of urea and molasses in growth media by adding 20% (w/w) control medium. Urea was varied between 0; 16; and 80 mg L-1, molasses was varied at the level of 0,1-0,9 g L-1. Cultivation was maintained in pH 9-10, light intensity 6000-7000 lux and 280C. Mini aerator pump is used as a medium stirrer. The best result were obtained at the medium varied of 0,1 g L-1 and 16 ppm of urea with growth rate of  0.230 day-1 , C:N ratio 6.8, and dry biomass of 0.333 g L-1.
Effect of Bicarbonate, Iron, and Salt, on Lipid Productivity of Chlorella sp. Extracted by Osmotic Shock Method Muhamad Maulana Azimatun Nur
Eksergi Vol 11, No 2
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v11i2.366

Abstract

Fossil energy depletion in Indonesia can not be neglected. It is needed renewable energy that environmental friendly and meets demand consumption. One of promising biofuel in Indonesia is biodiesel. However lack of feedstock is main problem due to increasing of customer needs. Chlorella sp. is kind of microalgae that potential for biodiesel source. This research is purposed to optimize influence of bicarbonate, iron, and salt in growth, biomass, and lipid productivity of Chlorella sp. The research was done in 2^3 factorial design in 6 days. Cultivation was maintained in pH 6,2-7,4 and 6000 lux light intensity. Extraction was done by osmotic shock method using wet biomass. Result indicates that addition of bicarbonate and iron give possitive effect on lipid productivity. Addition of salt give possitive effect on biomass and growth rate.
Study of Plate and Frame Heat Exchanger Performance : The Effects of Mass Flow Rate, Inlet Temperature and Type of Flow Againts The Overall Heat Transfer Coefficient Iqbal Syaichurrozi; Afdwiyarni Metta Karina; Ahmad Imanuddin
Eksergi Vol 11, No 2
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v11i2.361

Abstract

The purpose of this study is to know the effects of mass flow rate, inlet temperature and type of flow againts overall heat transfer coefficient (U). Heat exchanger used in this study was plate and frame type of TRIMGS 10. Mass flow rate of hot fluida was variated into 0.3 and 0.253 kg/s; mass flow rate of cold fluida was variated into 0.276 and 0.22 kg/s; inlet temperature of hot fluida was variated into 40, 45, 50 oC; type of flow was variated into co-current and counter current. The results show that the faster mass flow rate hot and cold fluida, the bigger overall heat transfer coefficient obtained. Also, the higher inlet temperature, the the bigger overall heat transfer coefficient obtained.  In this study, the biggest of U value was obtained with variable of inlet temperatur 50°C, mass flow rate of cold fluid 0.276 kg/s, mass flow rate of hot fluid 0.3 kg/s, which were 140.6532 W/m2°C using type of counter-current flow and 135.4576 W/m2°C using type of co-current flow. Type of counter-current flow gave more satisfactory result of U value than type of co-current flow
Reduction of Lignin from Coffee Husk using Organosolve Method Luluk Edahwati; Dyah Suci Perwitasari; Dyah Siswanti
Eksergi Vol 11, No 2
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v11i2.364

Abstract

Coffeehas a significant role for the plantation sector in Indonesia. During processing of coffee, the husk is alse gonerated. Coffeefruit husk waste is usally used as an animal feed ingredient or as organic fertilizer. Coffee shell husk contains lignin and cellulose in 8.67% at 41.26%, respectively.This cellulose is rather high, that could be potential for bioethanol production. However the quality of bioethanol will increase if the lignin content in coffee leather eliminated or reduced. Organosolve method is one of the lignin separation process using organic chemicals that are environmentally friendly eg ethanol and methanol. In this lignin removal process variable is run 2 hours of cooking time, the concentration of ethanol (v / v) 10%, 20%, 30%, 40%, and 50%, while the addition of citric acid 1:12, 1:16 and 1: 18. The best result of the removal of lignin from cocoahusk occurred in 40%(v/v)ethanol  with the addition of citric acid and 1:16 for 2 hours cooking time obtained lignin content (in deposition) of 0.31% and 6.14 % lignin in the filtrate.
Potency of Microalgae as Source of Functional Food in Indonesia (Overview) Muhamad Maulana Azimatun Nur
Eksergi Vol 11, No 2
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v11i2.363

Abstract

Malnutrition in Indonesia continues to increase. It is needed to develop functional food source that is capable to be produced in rapid, feasible, sustainable, and meets the nutritional needs for the country. Microalgae is a type of single-celled plants, live in water by using photosynthesis to produce biomass. Microalgae such as Spirulina platensis has a high protein content. It also contains vitamins and pigments that is useful to the body. The potential of microalgae production in Indonesia is high considering that Indonesia passed the equator and has a supporting environment. Trends in the future, it is expected Indonesia could produce microalgae at high mass scale, at a cheap price and can be applied in everyday life.
Analisis Mutu Biosolar pada Variasi Formulasi Blending Biodiesel dari Minyak Kapuk dengan Minyak Solar Haryono Haryono; Marliani Marliani
Eksergi Vol 11, No 2
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v11i2.343

Abstract

Minyak solar merupakan jenis bahan bakar minyak untuk mesin diesel yang bersifat tidak terbarukan. Diperlukan upaya untuk mengurangi ketergantuan terhadap minyak solar. Salah satu energi alternatif sebagai upaya pengurangan ketergantungan tersebut adalah biodiesel. Namun biodiesel dalam keadaan murni (B100) memiliki beberapa kekurangan jika digunakan dalam keadaan murni. Tindakan umum yang dilakukan untuk mengatasi kekurangan B100 sebagai bahan bakar adalah dilakukan blending dengan minyak solar pada formulasi blending tertentu.
Pemanfaatan Lumpur Lapindo sebagai Bahan Baku Pembuatan Genteng Keramik dengan Variasi Suhu Pembakaran Wasir Nuri; Dyah Tri Retno
Eksergi Vol 12, No 1 (2015)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v12i1.664

Abstract

Lapindo mudflow issued a very large volume of mud. The mud flooded rice fields, residential and industrial area to date has not been stopped but the mud bursts untapped yet. Therefore, attempted use Lapindo mud very much it to be made tile. Sludge containing 55.4% silica oxide, alumina 16.1% and 8.9% iron with the composition of the possibility of mud can be created tile roof. Dried mud that has been mashed into the grain size of 80 mesh, then water added until plastic. Mud that has plastic printed with size 6 x 3 x 3 cm and then dried using ambient air. After the dried samples were burned using a furnace at temperatures varying from 500 to 900oC, after chilling the samples tested compressive strength, fracture modulus and water absorption. The results showed that the higher the combustion temperature obtained greater compressive strength and less water absorption. Most compressive strength is 142 kg/cm2and smallest water absorption is 0.06 g/cm2at a temperature of 900oC. At combustion temperatures of 500 to 700oC fracture modulus down from 72.78 to 41.81 kg/cm2 while at 700 to 900oC fracture modulus rose to 126.7 kg/cm2. The best results obtained on the combustion temperature at 800oC with fracture modulus 103.18 kg/cm2 and water absorption 0.08 g/cm2.   These results satisfy roof tile as type I according SII.0027 UDC-81. 666.74.
Co-Digestion of Vinasse Waste and Tofu Liquid Waste to Increase Biogas Production Iqbal Syaichurrozi
Eksergi Vol 12, No 2 (2015)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v12i2.1357

Abstract

The purpose of this study was to increase biogas production using co-digestion concept. Vinasse Waste (VW) containing high COD and low total Nitrogen content was mixtured with Tofu Liquid Waste (TLW) containing low COD and high total Nitrogen. Substrates were varied with volume ratio of VW:TLW of 100:0, 20:80, 0:100. Total volume of substrates was 250 mL. Anaerobic digesters were operated at room temperatur. After fermentation, biogas total volume of variables of 100:0, 20:80, 0:100 was 88.5; 125.5; 41.5 mL. Initial pH for all variables was 7.0. At the end of fermentation, pH substrates became 3.9; 5.1; 6.8 for variables of 100:0, 20:80, 0:100 respectively.

Page 3 of 31 | Total Record : 301

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