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All Journal Jurnal Teknologi Pertambangan Jurnal Manajemen dan Kewirausahaan (JMDK) Jurnal Ilmiah Manajemen Kesatuan Journal of Metallurgical Engineering and Processing Technology JWM (JURNAL WAWASAN MANAJEMEN) Tepis Wiring : Jurnal Pengabdian Masyarakat International Journal of Applied Business and International Management Journal of International Conference Proceedings Innovative: Journal Of Social Science Research
Tri Wahyuningsih
Jurusan Teknik Pertambangan, Fakultas Teknologi Mineral, UPN “Veteran” Yogtakarta
Humanities Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Gold Extraction Process with Pre-Ox Sample and Aachen Assisted Leaching (AAL) using Running Aachen Dedi Pangestu; Tri Wahyuningsih
Journal of Metallurgical Engineering and Processing Technology Vol 4, No 2 (February 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v4i2.11252

Abstract

The Center for Mineral and Coal Testing is an institution that works in the field of research services on mining and mineral processing. In the mineral processing research currently being carried out there is a research project related to increasing the efficiency of the leaching process using the Aachen Reactor. The samples used in this research were refractory gold samples. The problem of reducing the effectiveness of gold leaching is that there are minerals that are still included in the associated minerals, therefore a pre-treatment process is needed to remove these associated minerals. The Aachen reactor will help increase the efficiency of the leaching process by increasing Dissolve Oxygen levels to 30 ppm. In this study, two samples were used for comparison, namely the Pre-Ox sample and the Aachen Assisted Leaching (AAL) sample.
The Effect of Aloe Vera Bioreagent as a Frother and Collector in the Gold Ore Flotation Process on Increasing Grade and Recovery Aufa Asna; Azalia Songli; Rizka Nabilah; Syahwanul Ikhsan; M. Fajar Rickiadi; Tri Wahyuningsih
Journal of Metallurgical Engineering and Processing Technology Vol 4, No 2 (February 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v4i2.11395

Abstract

One of the concentration processes in processing sulfide gold ore is the flotation technique which takes advantage of differences in mineral surface properties by adding chemical reagents. The addition of chemical reagents to the flotation process can cause environmental problems. Therefore, efforts are needed to replace chemical reagents with more environmentally friendly materials. In this research, an attempt was made to replace chemical reagents with a commonly found plant extract, namely aloe vera, as a bioreagent. Bioflotation experiments on a laboratory scale were carried out using a Denver flotation cell with an aloe vera reagent as a frother. This gold mineral bioflotation experiment was carried out on a 150 mesh size fraction. The results of increasing concentrate levels by flotation indicate that the aloe vera reagent as a frother is able to produce biosurfactants which replace chemical reagents as a more environmentally friendly biofrother and biocollector. This can be concluded based on flotation experiment data with bioreagent which has been tested showing an Au content value of 10.09 and a recovery of 96.15%, while flotation using chemical reagents shows an Au content value of 10.50 and a recovery of 95.96%. So the use of aloe vera as an environmentally friendly bioreagent in the flotation process releasing low sulfidation gold is more effective than the use of chemical reagents because it is indicated that there is a biosurfactant content in aloe vera.
AAS and XRD Analysis of Gold Ore Bioflotation Results with Aloe Vera as an Environmentally Friendly Reagent Sabrina Mantika; Farra Diva Prillasasti; Evan Nugrah Aurigha; Rike Amelia; M. Fajar Rickiadi; Tri Wahyuningsih
Journal of Metallurgical Engineering and Processing Technology Vol 4, No 2 (February 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v4i2.11394

Abstract

Flotation is a mineral concentration method that involves floating the minerals so that they can be separated from the gangue by the addition of reagents. The reagents used are chemicals such as frother and collector, which can potentially contaminate the environment. This research explores the potential use of aloe vera as a separating reagent in environmentally friendly gold ore flotation. The feed used consists of 300 grams of gold ore, and the flotation time is set at 15 minutes. XRD analysis is employed to determine the types of minerals contained in the sample, revealing that the sample consists of 97.64% quartz; Enstatite, syn 1.21%; and Clinochlore-1A 1.16%. Atomic Absorption Spectrophotometry (AAS) is the technique used to determine the metal concentration in a sample. AAS analysis indicates an Au concentration in the feed of 3.94 ppm. The Au concentration in the concentrate with the addition of aloe vera extract is 10.57, and in the tailings, it is 0.92, higher than the concentration in the concentrate without the addition of aloe vera extract, which is 10.11, with 1.89 in the tailings. The %recovery from these concentrations with the addition of aloe vera extract is 84.06%, while without the addition of aloe vera extract, it is 63.78%. This study provides evidence that the use of aloe vera in the gold ore flotation process can be a sustainable and environmentally friendly alternative in the effort to improve the separation of valuable minerals from impurities.
Gold Extraction Process with Base-Case Sample and Aachen Assisted Leaching (AAL) using Running Aachen at The Mineral And Coal Testing Center Tekmira, Bandung Jawa Barat Oktavio Yorris Brilian; Tri Wahyuningsih
Journal of Metallurgical Engineering and Processing Technology Vol 4, No 2 (February 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v4i2.11337

Abstract

The Center for Mineral and Coal Testing is an institution that works in the field of research services on mining and mineral processing. In the mineral processing research currently being carried out there is a research project related to increasing the efficiency of the leaching process using the Aachen Reactor. The samples used in this research were refractory gold samples. The problem of reducing the effectiveness of gold leaching is that there are minerals that are still included in the associated minerals, therefore a pre-treatment process is needed to remove these associated minerals. The Aachen reactor will help increase the efficiency of the leaching process by increasing Dissolve Oxygen levels to 30 ppm. In this study, two samples were used for comparison, namely the Pre-Ox sample and the Aachen Assisted Leaching (AAL) sample.
The Analysis of the Influence of Green Supply Chain Management and Low-Cost Strategies on Environmental Performance Shafira Alya Endyanti; Titik Kusmantini; Tri Wahyuningsih
International Journal of Applied Business and International Management Vol 6, No 1 (2021): April 2021
Publisher : AIBPM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32535/ijabim.v6i1.959

Abstract

This study aims to analyze the effect of green supply chain management and low-cost strategies on environmental performance. This study used a descriptive quantitative methodology. It surveyed 78 KWTs (Women's Farmers Group) in Sewon Regency, Bantul. The sampling technique was simple random sampling. The results indicate that green supply chain management has a positive effect on environmental performance, and the low-cost strategy has a positive effect on environmental performance.
Information Sharing, Informal Contracts, and Supply Chain Performance of SMEs in Gunung Kidul Regency, Indonesia Yuli Liestyana; Hadi Oetomo; Tri Wahyuningsih; Muhamad Kiki Ariyanto
International Journal of Applied Business and International Management Vol 7, No 1 (2022): April 2022
Publisher : AIBPM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32535/ijabim.v7i1.1449

Abstract

Supply chain performance refers to the activities to meet the end customer's requirements. This study aims to analyze the effect of information sharing and informal contracts on supply chain performance with trust as a mediating variable in silver-making SMEs in Pelemgede, Sodo, Paliyan, Gunung Kidul Regency, Special Region of Yogyakarta, Indonesia. Data were collected using a questionnaire. This study used PLS with SmartPLS 3.0 software to analyze the hypothesis. The findings indicate information sharing has a positive impact on trust. Also, trust positively impacts supply chain performance, trust mediates the impact of information sharing on supply chain performance, and the effects of informal contracts on supply chain performance. Advanced research can be done by applying the study in other SMEs fields 
Sustainable Social Supply Chain Practices and Operational Performance in The Manufacturing Industry in Sleman Tri Wahyuningsih; Yuli Liestyana; Yekti Utami; Hadi Oetomo; Tugiyo Tugiyo
Journal of International Conference Proceedings Vol 8, No 6 (2025): 2025 WIMAYA Yogyakarta Proceeding
Publisher : AIBPM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32535/jicp.v8i6.4425

Abstract

This research aims to explore how Sleman Regency's manufacturing sector operates in relation to sustainable social supply chain practices (SSSCPs).  The primary data used in this investigation were obtained from questionnaires.  After the data was gathered, the connection between the variables was examined using linear regression analysis. The analysis's findings show that operational performance (OP) is positively impacted by sustainable social supply chain practices (SSSCPs). With a small sample size of 37, the generalizability of this study is limited to medium- and large-scale manufacturing industries in Sleman Regency that have been in operation for at least ten years.  However, by examining these connections in a developing nation, this study offers a fresh viewpoint. By investigating the impact of sustainable social supply chain practices (SSSCPs) on operational performance (OP) in the industrial sector of Sleman Regency, this study adds to the body of literature.  From a practical standpoint, this study helps manufacturing firms understand The value of applying measures that promote social responsibility within sustainability to enhance overall competitiveness and operational performance.
Does Dynamic Capability Lead to Sustainable Innovation Performance in Smes? Yuli Liestyana; Tri Wahyuningsih; Yekti Utami; Hadi Oetomo; Tugiyo Tugiyo
Journal of International Conference Proceedings Vol 8, No 6 (2025): 2025 WIMAYA Yogyakarta Proceeding
Publisher : AIBPM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32535/jicp.v8i6.4391

Abstract

These researchers analyzed micro, small, and medium enterprises (MSMEs) in Bantul Regency, Indonesia, to determine whether dynamic capabilities have a positive impact on sustainable innovation performance.  In general, MSMEs in Indonesia play a crucial role in sustaining a resilient economy, which has proven to be able to withstand uncertain conditions. In developing countries such as Indonesia, MSMEs are expected to effectively manage both internal and external resources to achieve a sustainable competitive advantage. In this study, data were collected from 176 MSMEs that met the criteria of possessing dynamic capabilities in four main aspects: sensing capabilities, learning capabilities, integrating capabilities, and coordinating capabilities. The respondents in this study were managers or owners of MSMEs. Using regression analysis, the researchers found that these four aspects had a positive effect on the sustainable innovation performance of MSMEs in Bantul Regency. Thus, it has been proven that managing all aspects of dynamic capabilities is a strategic step to improve MSME performance, especially in terms of sustainable innovation.
Analysis of Green Marketing Mix and the Purchase Intention of Environmentally Friendly Product Alivia Zahra Kirana Dewi; Yuli Liestyana; Tri Wahyuningsih; Yekti Utami; Hadi Oetomo; Tugiyo Tugiyo; Sudaryatie Sudaryatie
Journal of International Conference Proceedings Vol 7, No 4 (2024): 2024 Wimaya Yogyakarta Proceeding
Publisher : AIBPM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32535/jicp.v7i4.3757

Abstract

The study aims to analyze the effect of green marketing on the purchase intention of environmentally friendly products. The variables used are green product, green price, green place, green promotion, and purchase intention. This research uses quantitative methods. The data collection method was a questionnaire distributed to 132 respondents who knew about environmentally friendly products. The analytical method used is multiple regression analysis. The results of this research show that green products, green prices, and green promotions have a positive effect on purchase intention. Meanwhile, green places do not positively influence purchase intention. Green places do not affect purchase intention because the location or distribution of environmentally friendly products is not a consideration for potential buyers. Several factors may have caused the green place not positively to affect purchase intention. However, researchers have not examined this; it is hoped that future researchers can examine the phenomenon of green places not positively affecting purchase intention.
Kelor Berdaya: Strategi Pengembangan UMKM Berbasis Potensi Lokal Ratnawati; , Maryana; Tri Wahyuningsih; Nurul Annisa; Khoirul Norma Rahayu
Jurnal Pengabdian Masyarakat: Tipis Wiring Vol 5 No 1 (2026): Tepis Wiring: Jurnal Pengabdian Masyarakat
Publisher : Fakultas Ekonomi dan Bisnis Unversitas Islam Raden Rahmat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/tepiswiring.v5i1.8568

Abstract

MSMEs in Gunungkidul Regency have significant potential to drive the local economy, but they still face various structural obstacles, such as limited capital, low production technology, weak product branding and packaging, and the suboptimal utilization of local potential as a competitive advantage. Furthermore, the lack of a sustainable mentoring program from the local government hinders MSMEs' full development. MSMEs play a crucial role in creating jobs, reducing poverty, and increasing community empowerment. The success of the mentoring program in Kelor Village demonstrates that integrated mentoring can improve production quality, financial management, and market access for MSMEs. Based on these conditions, the Gunungkidul Regency Government needs to implement an Integrated MSME Mentoring Model consisting of five main pillars: the establishment of mentoring units and MSME empowerment centers in each village, the provision of appropriate technology and a shared facility center, regular training and product certification facilitation, the holding of MSME Expos and collaboration with digital marketplaces, and a regular monitoring system with measurable indicators. The implementation of this policy is expected to increase MSME competitiveness, expand markets, and support sustainable regional economic development. On the other hand, if it is not implemented immediately, MSMEs will continue to stagnate, lose out to products from outside the region, and fail to take advantage of the rapidly growing digital economic opportunities
Co-Authors . Maryana Akmal Rasyid Priyono Alivia Zahra Kirana Dewi Anton Sudiyanto Aufa Asna Azalia Songli Bakti Anugrah Hakim Dedi Pangestu Dika Setya Prayogi Evan Nugrah Aurigha Farra Diva Prillasasti Hadi Oetomo Hadi Oetomo Indun Titisariwati Indun Titisariwati Khoirul Norma Rahayu Krisnandini Wahyu Pratiwi M. Fajar Rickiadi M. Fajar Rickiadi Meindra Setyawan Mifta Khurrohmah Monika Asworo Muhamad Kiki Ariyanto Muhamad Kiki Ariyanto Muhammad Evan Alhamda Nurul Annisa Oktavio Yorris Brilian Olivia Silvi Hermanto Ratnawati Rike Amelia Rinaldi Choirul Muarif Rivando Brillian Saerang Rizka Nabilah Sabrina Mantika Shafira Alya Endyanti Sudaryatie Sudaryatie Syahwanul Ikhsan Titik Kusmantini Tugiyo Tugiyo Untung Sukamto Wawong Dwi Ratminah Yekti Utami Yuli Liestyana Yuli Liestyana Yuli Liestyana