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All Journal Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
Nugraheni, Rosmalia Dita
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology Social Sciences

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Journal : INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY

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THE EFFECT OF HARMFUL AND FAVORABLE GAS AND CHEMICAL CONTENT EMITTED BY MUD VOLCANO TO ENVIRONMENT Burhannudinnur, Muhammad; Nugraheni, Rosmalia Dita; Rinanti, Astri
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 4, NUMBER 1, OCTOBER 2020
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v4i1.8001

Abstract

The recent eruption of Kesongo mud volcano (MV) that occurred in 28August 2020 in Blora, Central Java was a common natural phenomenon.MV eruption occurred periodically depending on the recharge fluid systemthat interconnected to a geothermal system and hydrocarbon reservoir.During the eruption, methane and CO2 gas were emitted to theatmosphere together with rocks, muds and fluids flowing from the fractureand fault system of MV. The extruded materials could be harmful andbeneficial for the affected ecosystem. Aims: This study aimed to addressthe potential impact of the extruded mud volcano materials to theenvironment. Methodology and Results: An attempt was carried out byinvestigating gas and fluid content of every mud volcano morphology in theselected 11 areas of Kradenan, Central Java and Sidoarjo, East Java. The pristine fluids and gas of MV were sampled for chemical and toxiccompound observation. Gas composition and type was observed using gaschromatography. The result shows that methane gas content ranges from0.06 to 67.6 mol%., while the CO2 content ranges from 0.21 to 79.9 mol%.Methane gas exhibits thermogenic gas that associated with hydrocarbongeneration. Conclusion, significance and impact study: The chemicalcompound of fluids indicates high Boron (B) content above 0.5 ppm whichhas harmful effect for crops and human health, but some compounds ofCa, Na, K, Mg present as essential elements for soil nutrient. According tothe methane flux and chemical compound emitted by mud volcano, thisstudy contributes to a management practice to restore and conserve the global ecosystem.
USE OF ANOVA STATISTICAL METHOD IN EVALUATION OF TOFU WASTEWATER USED FOR SPIRULINA CULTURE MEDIUM ENRICHED WITH UREA AND NaHCO3 Maulani, Mustamina; Jasmine, Gabriella; Nugraheni, Rosmalia Dita; Djumantara, Maman; Nugrahanti, Asri; Satiyawira, Bayu; Rosyidan, Cahaya; Samura, Lisa; Widiyatni, Harin; Pauhesti, Pauhesti
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 6, NUMBER 2, OCTOBER 2023
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v6i2.16933

Abstract

Indonesia has a large amount of liquid waste originating from the tofu industry. Currently, the treatment of tofu industrial wastewater is carried out using both anaerobic and aerobic methods, but both methods still have several weaknesses. In this study, the tofu industrial wastewater was utilized as a culture medium for Spirulina sp. to provide economic value from wastewater that can be used as bioethanol, pharmaceuticals, and food products rich in omega 3, chlorophyll, carotenoids. Aim: The growth of Spirulina sp. is closely related to the availability of macro and micronutrients as nutrients and the influence of environmental conditions, so this study was aimed to see the best variation of the addition of urea and NaHCO3 as additional nutrients to maximize growth and cell density of Spirulina sp. with tofu industrial wastewater media. Methodology and Results: This study was done by culvitating Spirulina sp in the growth media, measuring the Optical Density (OD), and analyzing quantitatively and using ANOVA on IBM SPSS Statistics version 20. The study indicated that adding urea and NaHCO3 to Spirulina sp. had no effect on cell density and growth rate. Treatment with addition of urea 0.36 g/500 ml without additional of NaHCO3 had the highest growth rate, 0.00852/day, and the highest cell density value on Spirulina sp. growth. Conclusion, significance, and impact study: The tofu liquid waste can be used as a new alternative used as fertilizer because in the liquid tofu waste, it provides the nutrients needed by Spirulina sp.
Co-Authors Adimedha, Tyto Baskara Asri Nugrahanti, Asri Bayu Satiyawira Benyamin Benyamin, Benyamin Cahaya Rosyidan Ciputra, Roni Cahya Farenzo, Rayhan Aldizan Frederikus Dian Indrastomo, Frederikus Dian Harin Widiyatni Heri Syaeful I Gde Sukadana Jasmine, Gabriella Maman Djumantara, Maman Maulani, Mustamina Mohammad Apriniyadi Muhammad Burhannudinnur Pauhesti, Pauhesti Pratiwi, Fadiah Rachael, Yoshi Samura, Lisa Suherman Dwi Nuryana