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Anggorowati, Dwi Anna
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Energy Engineering Industrial & Manufacturing Engineering

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Journal : Journal of Sustainable Technology and Applied Science

 1 
EARLY STUDY OF BIOCHARCOAL QUALITY FROM POULTRY LIVESTOCK WASTE Anggorowati, Dwi Anna; Minah, Faidliyah N.; Artayani, Anis; Mustiadi, Lalu
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 1 No. 1 (2020): Journal of Sustainable Technology and Applied Science, May 2020
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v1i1.2523

Abstract

Bio charcoal is one type of fuel in the form of charcoal made from various kinds of biological or biomass material, which includes agricultural waste, forestry waste, agro-industrial waste, animal waste from livestock waste. Bio charcoal is produced from the carbonization process or the charcoal process of materials containing carbon (biomass). One of the biomass that has the potential to be used as raw material for bio charcoal is poultry manure originating from poultry livestock waste. The composition of poultry livestock waste (chicken manure) is crude protein by 9.97-12.67% and crude fiber by 30.36-32.65. This study aims to determine the optimal carbonization temperature and particle size in the carbonization process so that optimal Fixed Carbon level can be obtained by using variations in the size of Chicken Manure Particles, namely: 30 mesh, 40 mesh, 50 mesh, and Charcoal temperature: 200, 225, 250, 275 and 300° C. Stages of the process carried out is drying chicken manure to the weight of constant chicken manure (water content < 10%) and then mashed and sieved to sizes of 30, 40, and 50 mesh and the last stage is the charcoal process of chicken manure with variations in temperature of 200, 225, 250, 275, and 300° C until the perfect charcoal process. From this study, the best parameter is obtained at 350° C and 50 mesh particle size with 45% Fixed Carbon content, 3.26% moisture content, 41% ash content, and volatile matter content 22%.
ENZIMATIC HYDROLYSIS PROCESS FOR INCREASING GLUCOSE LEVELS FROM COCONUT HUSK WASTE Anggorowati, Dwi Anna; Sriliani, Sriliani; Artiyani, Anis; Setyawati, Harimbi; J, Kevin
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 2 No. 2 (2021): Journal of Sustainable Technology and Applied Science, November 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v2i2.3579

Abstract

Coconut husk waste is waste that has not been used optimally, generally only as a craft material. Seeing the composition of coconut husk, it has the potential to be used as an alternative fuel, one of which is to produce bioethanol products. The purpose of this research was to utilize coconut husk waste as raw material for bioethanol production and to assess the effect of the number of enzymes and time of hydrolysis on the glucose levels produced. In this research, the authors focused on obtaining glucose levels from coconut husks by hydrolysis using cellulase enzymes with an activity of 700 EGU/g. The variations used in this research were the volume of cellulase enzymes (2, 3, 4, 5, 6) ml and the hydrolysis time (4, 8, 12) hours. After the coconut husk undergoes physical and chemical treatment using 10% NaOH, there is a decrease in lignin levels from 44% to 14% and there is an increase in cellulose levels from 24% to 38%, and the use of a cellulase enzyme volume of 2 ml with a hydrolysis time of 4 hours was more optimal with a glucose level of 0.32%.
PHYSICAL, CHEMICAL AND ORGANOLEPTIC CHARACTERISTICS OF CELERY LEAF (APIUM GRAVEOLENS) HERBAL TEA Anggorowati, Dwi Anna; Alpenada, Valerie; Minah, Faidliyah Nilna
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 4 No. 2 (2023): Journal of Sustainable Technology and Applied Science, November 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v4i2.5816

Abstract

Celery (Apium Graveolens L.) is one type of herbal plant that is known to have many properties for human health. Despite its abundant availability, it has a relatively short shelf life, which is around 2-3 at room temperature. Celery can be used for the treatment of hypertension, rheumatism, gout, inflammation, appendicitis, typhoid, poisoning, insect bite wounds, cough, prostate, hair fertilizer, oily face, asthma and xerophthalmia. Given the many uses of celery leaves and the relatively short shelf life, this celery will be processed into a form of herbal drink that is ready for consumption. Therefore, this herbal tea will be a solution to extend the shelf life of celery leaves. In this study, celery will be dried using three different techniques: the sunlight method, an oven, and a dehydrator, which also serves as the study's variable. Sunlight drying takes 12 hours, 24 hours, and 48 hours, while oven drying takes 5 hours at 50oC and dehydrator drying takes 1 hour at 50oC. The 14 hours celery withering process is applied for all drying methods. The results of the study will be tested for water content, ash content, antioxidant activity test, flavanoid test and hedonic test. Only 2 methods were found to be in accordance with the INS, namely sun drying for 12 hours and using a dehydrator for 1 hour.
OPTIMIZING BRIQUETTE CHARACTERISTICS BASED ON THE RATIO OF BAMBOO AND COCONUT FIBER UNDER CONVENTIONAL METHOD Anggorowati, Dwi Anna; A.S., Mardhiyah; N., Rizky; K., Ido; Adam Yonanda; Jamilulchal , M
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 5 No. 1 (2024): Journal of Sustainable Technology and Applied Science, May 2024
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v5i1.8015

Abstract

This study aims to optimize the potential of biobriquettes produced from a mixture of bamboo and coconut fiber using starch adhesive. The focus of the research includes determining the composition ratio of bamboo and coconut fiber that gives the best results, as well as the physicochemical characteristics of the briquettes, including moisture content, volatile matter, ash content, and calorific value. In the carbonization process, bamboo is processed for 5 hours, while coconut fiber is processed for 2 hours, with an operating temperature of 140°C. This study considered variations in the ratio of bamboo and coconut fiber mixture, such as 1:1, 5:1, and 9:1. Starch adhesive was used in a concentration of 25% of the total mixture as a determining factor in the formation of biobriquettes. The results showed that the bamboo:coconut fiber mixture ratio of 5:1 gave the best biobriquette characteristics. These briquettes have low moisture content, optimal volatile matter, standard ash content, and high calorific value of 5679.15 cal/gram. Carbonization at 140°C positively influenced the physicochemical properties of the biobriquettes.
CHEMICAL DELIGNIFICATION OF MALANG ARABICA COFFEE HUSK WASTE FOR ALTERNATIVE ENERGY Anggorowati, Dwi Anna; Setyawati, Harimbi; Handaratri, Anitarakhmi; Dewi, Rini Kartika; Surbakti, Sriliani
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 6 No. 1 (2025): Journal of Sustainable Technology and Applied Science, May 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v6i1.8131

Abstract

Malang Regency is an area that has the potential as the largest coffee producer inIndonesia. The coffee processing will produce ± 65% of coffee beans and ± 35% of coffeehusk waste so that in the Malang Regency area with coffee productivity of 9,245 tons, itwill produce coffee husk waste of ± 3,235 tons. The by-product of coffee processing in theform of coffee husk is a waste that has not been used optimally. Generally only used forfodder and compost.Looking at the presence of coffee husk waste and the composition of coffee husk, it has alignin content of 29%, hemicellulose by 24% and the highest cellulose by 33%. Adequatecellulose content of the material for the manufacture of bioethanol is more than 30%, fromthe composition of Arabica coffee husk, the cellulose content is more than 30%. So it hasthe potential to be used as an alternative fuel, one of which is to produce bioethanolproducts. This research aimed to reduce lignin content and increase cellulose content fromcoffee husk waste by chemical treatment using NaOH chemical. The stages of the researchwere coffee husk powder with a size of 80 mesh and weighed 5 grams and put into a glassbeaker. Then added NaOH solution with a concentration of (5.0%; 5.5%; 6.0%; 6.5%; and7.0% (v/v) with a volume of 50 ml. The sample was put in an autoclave at 121 °C for (15,30, 45, and 60 minutes. The best time was 30 minutes with a NaOH concentration of 7%with the highest cellulose content obtained, it was 55%.
Co-Authors A.S., Mardhiyah Adam Yonanda Alpenada, Valerie Anis Artiyani Anitarakhmi Handaratri Artayani, Anis Faidliyah Nilna Minah Harimbi Setyawati J, Kevin Jamilulchal , M K., Ido Lalu Mustiadi Minah, Faidliyah N. N., Rizky Rini Kartika Dewi Sriliani Surbakti Sriliani, Sriliani