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All Journal INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY JURNAL RISET DIWA BAHARI
Widayati Putri, Tri
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Energy Environmental Science Immunology & microbiology

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SUSTAINABLE NICKEL RECOVERY FROM NICKEL SLAG WASTE USING DIETHYLAMINE DITHIOCARBAMATE: ENHANCING RESOURCE EFFICIENCY AND MINIMIZING ENVIRONMENTAL IMPACT Fadliah, Fadliah; Burhannudinnur, Muhammad; Taba, Paulina; Wahid Wahab, Abdul; Kasim, Syahruddin; Karim, Abdul; Hasri, Hasri; Subandrio; Widayati Putri, Tri; Nur, Arfiani; Yasmaniar, Ghanima; Husla, Ridha; Jarre, Sulistiani; Zahra, Audrey; Abdalrazaq, Eid; Kollur, Shivaa Prasad; Raya, Indah
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 8, NUMBER 1, APRIL 2025
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v8i1.22589

Abstract

Slag waste from the metal refining industry, if left to accumulate for a long time, can become a source of environmental pollution due to the content of heavy metals that can dissolve and spread to the surrounding environment. However, slag can also be an alternative source for obtaining valuable metals. Aim: This study aims to examine the ability of diethylaminedithiocarbamate ligands to recover nickel metal from slag waste through the mechanism of complex compound formation. Methodology and results: The extraction process was carried out at the optimal pH for each ligand to maximize the selectivity and efficiency of metal recovery. Characterization of the complex compounds from the reaction was carried out using various analytical techniques, including Fourier Transform Infrared Spectroscopy (FTIR), UV-visible spectroscopy (UV-Vis), X-Ray Diffraction (XRD), Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS), and melting point tests to determine the thermal stability of the compound. The study results indicate that diethylaminedithiocarbamate ligands can selectively form complex compounds with nickel metal in slag and are effective in recovering metals from slag waste with a recovery value of 94.88%. Conclusion, significance, and impact study: The results of this study indicate that using diethylaminedithiocarbamate ligands can be an environmentally friendly approach to using slag waste as a secondary source of metals.
Uji Mikrobakteri dan Iritasi Sabun Padat Rumput Laut Gracilaria Verrucosa Nurmaida, Nurmaida; Harianti, Harianti; Widayati Putri, Tri
Jurnal Riset Diwa Bahari (JRDB) Volume 1, Nomor 2, 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v1i2.12

Abstract

This study aims to determine the irritant properties of human skin to Gracilaria verrucosa solid soap preparations and organoleptic values. the method used was a pre-experimental design type one group pretestposttest and the data were described descriptively. The results showed that ALT and pH were highest in the control sample with values of 1.9 x 104 colonies/gram and 9.2, respectively. The highest organoleptic value is soap preparation without the addition of Gracilaria verrucosa with a value of 3.2 because it has an attractive appearance with a shiny clear colour. The conclusion of the results showed that the preparation of Gracilaria verrucosa solid soap with the composition of base soap, Gracilaria verrucosa, and essential oil did not irritate the skin of volunteers and organoleptically, the value of the level of Panelists' liking for Gracilaria verrucosa solid soap preparations was highest in soap preparations without the addition of Gracilaria verrucosa compared to soap preparations with the addition of Gracilaria verrucosa. soap preparations with the addition of Gracilaria verrucosa.
Karasteristik Serbuk Buah Mangrove Rhizophora sp. Wulandari, Sri; Karmila, Ziana; Widayati Putri, Tri; Khairiyah, Zul
Jurnal Riset Diwa Bahari (JRDB) Volume 1, Nomor 2, 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v1i2.17

Abstract

Mangroves have various roles for human life, one of which is as an alternative food ingredient, namely coffee raw material. Mangrove propagules, especially the fruit, can be processed and produce powders that can be brewed like coffee in general so this study aims to analyze the characteristics of mangrove fruit powder by calculating ash content, water content, caffeine, followed by sensory and hedonic testing of Rhizophora sp. This study used a laboratory-scale quantitative method followed by panelists' assessment of two different samples. Sample one is Rhizophora sp. mangrove fruit powder, while sample two is a mixture of Rhizophora sp. mangrove fruit powder with the addition of Arabica coffee beans. The test results of ash content, moisture content, caffeine, sensory, and hedonic testing respectively showed values of 2.48 and 1.49; 2.94 and 3.03; 1.36 and 0.92; 23.3 and 25.1; and 27.1 and 28.3. So it can be concluded that the water content and ash content of mangrove fruit powder with the addition of arabica coffee beans are higher than mangrove fruit powder. Although the caffeine content of mangrove fruit powder is higher than those that get additional arabica coffee. Mangrove fruit powder with the addition of Arabica coffee beans has a higher value in sensory and hedonic testing, panellists prefer and feel more satisfied when consuming mangrove fruit powder with the addition of Arabica coffee.
Co-Authors Abdalrazaq, Eid Abdul Karim Arfiani Nur Fadliah, Fadliah Ghanima Yasmaniar Harianti Harianti Hasri Hasri Husla, Ridha Indah Raya Karmila, Ziana Khairiyah, Zul Kollur, Shivaa Prasad Muhammad Burhannudinnur Nurmaida Nurmaida, Nurmaida Paulina Taba Sri Wulandari Subandrio Sulistiani Jarre Syahruddin Kasim Wahid Wahab, Abdul Zahra, Audrey