Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY
Sudiartha, Gede Adi Wiguna
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Energy Environmental Science

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
VALORIZATION OF TOMATO AND CABBAGE WASTE FOR BIOHYDROGEN AND FERTILIZER PRODUCTION THROUGH TRICHODERMA-AIDED DARK FERMENTATION Suyasa, I Wayan Budiarsa; Sudiartha, Gede Adi Wiguna; Bawa, I Gusti Agung Gede; Vo, Huy Thanh; Nakamura, Shingo
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 8, NUMBER 2, OCTOBER 2025
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v8i2.22902

Abstract

Aims: The current study aimed to investigate the feasibility of biohydrogen production from tomato and cabbage waste through dark fermentation with Trichoderma spp. supplementation to enhance substrate degradation. Methodology and results: Laboratory-scale anaerobic reactors with five different Trichoderma concentrations (0.0, 2.5, 5.0, 7.5, and 10.0 g) were operated at room temperature for 112 days, during which hydrogen production, glucose consumption, pH, and temperature were continuously monitored. The highest cumulative hydrogen yield was observed in the treatment with 2.5 g of Trichoderma, achieving 44.65 mmol H₂/mol glucose, which is three times greater than the control. Correlation analysis revealed that optimal biohydrogen production was associated with extended incubation periods, elevated temperatures, and lower pH levels (below 6.0); however, increased concentrations of Trichoderma did not consistently enhance hydrogen yield. The liquid digestate from the best-performing reactor was applied as a biofertilizer for chilli seedlings. The 5% digestate treatment significantly promoted plant height and leaf growth compared to the control, suggesting the beneficial effects of bioactive compounds produced by Trichoderma. Conclusion, significance, and impact study: Reactor supplemented with 2.5 grams of Trichoderma exhibited the highest biohydrogen production, and a 5% digestate concentration enhanced the growth of chilli seedlings. This study demonstrates the dual potential of agricultural waste valorisation, producing renewable energy and supporting sustainable agriculture, highlighting the promising role of microbial-aided fermentation and biofertilizer applications in circular bioeconomy models.
RAW WATER QUALITY ANALYSIS TO DISCOVER THE CAUSE OF PIPELINE SCALLING PROBLEM IN PT. X (ICE PRODUCTION COMPANY) Harmayani, Kadek Diana; Sudiartha, Gede Adi Wiguna; Suyasa, I Wayan Budiarsa
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 1, OCTOBER 2021
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i1.10748

Abstract

PT. X is one of the ice companies in which its largest company is located in Bali, more precisely in the Pidada area, North Denpasar. Based on field observations the area is an area that has a calcareous soil structure. The water source of PT. X was extracted from the groundwater. From the field observation, it was found that the pipeline network, that connected the inlet water to water treatment system and ice production units, was severely covered by faint white scale. In order to discover the origin of this scale, water quality testing need to be carried out.  From the results, it was found that the total hardness in the inlet water, taken from the groundwater tap, was 162.85 mg/l with calcium concentration of 2.15 mg/l and iron 3.83 mg/l. Water quality testing was also carried out in the water treatment unit consisting of resin softener where the total hardness surprisingly increased into 279.81 mg/l, calcium concentration was 2.96 mg/l, iron concentration was 0.55 mg/l. Even after being treated in softener resin, the total hardness increased sharply to 483 mg/l, which categorized as extreme hardness. The increase in total hardness indicates that there was a failure in the operation of the water treatment system, even it also contributed to the higher hardness and calcium concentration. This over-year’s treatment failure has been causing accumulation of hardness and calcium concentration in the compartment of both water treatment system and ice production unit that inflicts a higher hardness level in the effluent.
Co-Authors I Gusti Agung Gede Bawa I W BUDIARSA SUYASA Kadek Diana Harmayani Nakamura, Shingo Vo, Huy Thanh