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Hesty Heryani
Department Of Agro-Industrial Technology, Faculty Of Agriculture, University Of Lambung Mangkurat
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Journal : EnviroScienteae

 1 
Utilization Of Sterol Glycosides In Fame (Fatty Acid Methyl Ester) Byproducts From The Biodiesel Industry Noor Ridha Yanti; Meilana Dharma Putra; Agung Nugroho; Hesty Heryani
EnviroScienteae Vol 15, No 1 (2019): EnviroScienteae Volume 15 Nomor 1, April 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (699.257 KB) | DOI: 10.20527/es.v15i1.6325

Abstract

In recent years, the development of renewable energy such as biodiesel has been widely researched throughout the world as technology advances in the era of Industry 4.0. At the final station of biodiesel production in the maturation tank, the by-products will form by-products in the form of sterol glycosides in Fatty Acid Methyl Esters which have not been utilized. This study aims to determine the volume of biodiesel from a mixture of sterol glycosides with a ratio of 0.5% H2SO4 catalyst concentration; 1%; 1.5% and 2% and tested their characteristics in accordance with the Indonesian National Standard (SNI 7182: 2015). Biodiesel production was carried out by esterification with a molar ratio of 1:6 (sterol glycoside: methanol) to variations in H2SO4 catalyst concentration. The results of the highest yield volume biodiesel were obtained from a catalyst concentration of 1.5% of 28.02% and the lowest yield of 17.50% in a 0.5% catalyst. Based on the characteristic test of biodiesel by varying the concentration of catalyst H2SO4 obtained density of 852 – 862 kg m-3, viscosity of 4.642 – 4.950 mm2 s-1 and saponification number of 191.007 – 198.164 mg-KOH g-1 according to standard characteristics SNI 7182:2015, while for the water content of 0.1965 – 0.1976% and acid numbers of 2.151 – 3.232 mg-KOH g-1 isn’t according to standard characteristics. Based on research, pre-treatment treatments was recommended before the refining process to reduce the amount of acid and moisture content so according to standard characteristics.
STRATEGI PENGEMBANGAN PERTANIAN PADI ORGANIK DI KABUPATEN HULU SUNGAI SELATAN Isna Arianti Arianti; Danang Biyatmoko; Rizqi Puteri Mahyudin; Hesty Heryani
EnviroScienteae Vol 18, No 3 (2022): ENVIROSCIENTEAE VOLUME 18 NOMOR 3, NOVEMBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/es.v18i3.14800

Abstract

As a continuation of “Go organic 2010”, Government through Ministry of Agriculture of The Republic of Indonesia has target “1,000 Agriculture Organic Villages” (Directorate General of TP of Indonesian Ministry of Agriculture, 2015). Needs of healthy food is increased along with awareness of the Public and development of healthy life style trend is growing at this moment, so that development of the organic rice agriculture becomes very strategic. Opportunity of organic rice agriculture starts being concerned by farmers in the regency of Hulu Sungai Selatan, the local government has attempted supports through the programs and activities. Organic rice agriculture in the Hulu Sungai Selatan regency has still not yet developed widely, thus, it is required appropriate development strategy with condition and state of the farmers in Hulu Sungai Selatan Regency. Research objectives 1) Analyzing Perceived Value (NP) from the economic, technical and social perception of the community towards the application of the organic rice agricultural system. 2) Identifying and analyzing internal and external faktors that influence in the development of the organic rice agricultural system in Hulu Sungai Selatan Regency. 3) Formulating strategy of organic rice agricultural system in Hulu Sungai Selatan Regency. This study was held on March 2022 in the Gambah Dalam Barat Village in Regency of Hulu Sungai Selatan, South Kalimantan Province.  There were 44 research samples which consisted of 37 farmers and 7 key persons (key informants) and also consisted of formal and informal figures. To analyze the value of perception, Likert scale was used. The identification of internal and internal faktors also used IFAS matrix, EFAS matrix and IE matrix. SWOT matrix was also used to get alternative development strategy and QSPM matrix was used to determine focus strategy in the development of organic rice agricultural system in Hulu Sungai Selatan Regency. Study results show that the perception value of the farmers which was seen from economical perception is on high category (77.92 %), technical perception is on very high category (81.24%) and social perception is (83.71%) on very high category. It shows that awareness and understanding about organic rice agriculture is already very good (positive). IFAS value is 2.755 and EFAS is 3.242. Strength faktor is (1.766) which is more dominant of the weakness faktor (0.989) and the opportunity faktor (2.269) is bigger than threat (0.973). Based on IE matrix, condition of organic rice agricultural system in Hulu Sungai Selatan Regency is located on cell II, possible strategies to be conducted is growing and building strategy which utilize external faktors (using opportunity and facing threat) to overcoming internal faktors (maximizing strength and minimizing weakness) that is enhancing production, developing products, penetrating market, developing market, integrating vertical and horizontal integration. On SWOT matrix is obtained nine alternative strategies and through QSPM matrix has been determined focus strategies include: increasing activity of counseling and accompaniment by officers in the field with value of 16,83869. This strategy is very suitabel because to develop organic rice agriculture, farmers must be always accompanied and helped to apply the system. Value of economical, technical and social perception about organic rice agriculture as adoption initial stage of organic rice agriculture is already very good, some are already on try-out step and next evaluation is just how they can apply and survive in organic rice agricultural system so that the system can develop and development objectives can be achieved.
PENGARUH KONSENTRASI HYDROSOL DALAM MENGATASI SWABAKAR BATUBARA PADA STOCKPILE PT. BHUMI RANTAU ENERGI Muhammad Nasrudin; Hesty Heryani; Syarifuddin Kadir; Ruslan Ruslan
EnviroScienteae Vol 19, No 2 (2023): ENVIROSCIENTEAE VOLUME 19 NOMOR 2, MEI 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/es.v19i2.16302

Abstract

Storing coal for a long duration of time in the stockpile can cause the company to lose money because the possibility of self-ignition is greater. Spraying treatment using hydrosol will wet the coal evenly so that it will coat the coal and can prevent self-ignition. This study was made to analyze changes in coal temperature due to the use of Hydrosol and determine the best Hydrosol concentration to prevent coal self-heating. The operational design of the research was by separating coal products. Then, four concentrations of Hydrosol were made to be applied to coal product by spraying. After spraying each coal product, data  were collected by measuring the temperature every day. The data from the research results showed the temperature increase for each coal product for 20 days of stacking so that it illustrated the effect of each Hydrosol concentration made and get the best concentration for application in the company's coal production pr˚Cess. The use of Hydrosol with four concentrations (0.0%; 0.5%, 1.O%; and 1.5%) with a treatment duration of 20 affected the temperature of the coal pile with a range of 32.4˚C to 55.3˚C where the initial critical temperature for self-heating was 50.7˚C. For this reason, coal with temperatures above 50˚C must be given treatment again such as compaction and spraying The best Hydrosol concentration to prevent self-heating during 20 days of stacking; as l.5o% Hydrosol concentration, which was a mixture of 98.5 liters of water with 1.5 liters of Hydrosol for every 10 tons of coal, which produced the lowest final temperature of all coal stacks, namely 41.3˚C.
Co-Authors A Cahyo Legowo Abdul Ghofur Agung Cahyo Legowo Agung Nugroho Arif Pangestu Arif Rahman Hakim Danang Biyatmoko Dessy Maulidya Maharani EN Anugraini Dewi Indra Prapto Nugroho Isna Arianti Arianti Meilana Dharma Putra Muhammad Nasrudin Noor Ridha Yanti Nursiah Chairunnisa Panggih Prabowo Rona Saputra Rizqi Puteri Mahyudin Ruslan Ruslan Syarifuddin Kadir Tuti Heiriyani Wiwin Tyas Istikowati