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Kharismadewi, Dian
Universitas Muhammadiyah Palembang
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Pengaruh Aditif Limbah Kerang Darah (Anadara Granosa) Terhadap Kualitas Beton K-225 Dian Kharismadewi; Muhammad Afrizal Pelantika; Marhaini
Jurnal INOVATOR Vol. 5 No. 2 (2022): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v5i2.155

Abstract

A rapid development of the concrete construction sector has resulted in an increase in the need for concrete raw materials that are obtained directly from nature. The need for environmentally friendly materials is also increasing along with the development of construction engineering technology, so several studies have been conducted to search for an alternative to raw materials additives or concrete mixtures. Anadara granosa clam shell can be utilized as one of the alternative materials to substitute material for coarse aggregates. In this research, Anadara granosa clam shells of 10% and 13% were added to normal concrete mixtures, aged for 28 days, and then analyzed for characteristics and compressive strength. From the analysis of the results, it was found that an increase in the concrete compressive strength up to 103.67% or 233.47 Kg/cm2 with the addition of clam shells 10% to normal concrete mixtures, while the addition of more than 10% can reduce the concrete compressive strength. Scanning Electron Microscopy results showed a relatively rough surface and many pores on the surface of the concrete due to the addition of a clam shell. Finally, it can be concluded that Anadara granosa clam shells can be used as concrete additives with a maximum addition of 10% of the total weight of normal concrete.
Modifikasi Permukaan Elektroda Karbon Menggunakan CuS@rGO-Nafion dan Uji Kinerja Elektroda pada Aplikasi Sensor Hidrazina Dian Kharismadewi; Sri Martini
Jurnal INOVATOR Vol. 5 No. 1 (2022): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v5i1.150

Abstract

Hydrazine is a dangerous chemical compound that is widely used in various industries. The presence of this compound in the waters resulting from the disposal of industrial waste must be monitored and controlled for its presence. For this reason, a sensor is needed that can be used to detect the presence of this compound in the waters. Commercial carbon electrodes are environmentally friendly materials and are relatively cheap to be used as potential sensor materials, but these materials have low electrochemical activity and are hydrophobic. To increase the electrochemical activity of the carbon electrode, modifications were carried out using CuS-Nafion and CuS@rGO-Nafion materials which were synthesized through solvothermal reactions and dropped-casting on the surface of the carbon electrodes. The modification was successfully carried out which was shown by the results of scanning electron microscopy which had a high response to the hydrazine compound shown from the results of cyclic voltammetry (CV) analysis. The best result is shown by carbon electrode modified using CuS@rGO-Nafion materials. The electrochemical impedance spectroscopy (EIS) results showed excellent results where the Rct value was 2178 Ω which could facilitate high electron transfer on the modified electrode surface.
Pengaruh Aditif Limbah Kerang Darah (Anadara Granosa) Terhadap Kualitas Beton K-225 Dian Kharismadewi; Muhammad Afrizal Pelantika; Marhaini
Jurnal INOVATOR Vol. 5 No. 2 (2022): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v5i2.155

Abstract

A rapid development of the concrete construction sector has resulted in an increase in the need for concrete raw materials that are obtained directly from nature. The need for environmentally friendly materials is also increasing along with the development of construction engineering technology, so several studies have been conducted to search for an alternative to raw materials additives or concrete mixtures. Anadara granosa clam shell can be utilized as one of the alternative materials to substitute material for coarse aggregates. In this research, Anadara granosa clam shells of 10% and 13% were added to normal concrete mixtures, aged for 28 days, and then analyzed for characteristics and compressive strength. From the analysis of the results, it was found that an increase in the concrete compressive strength up to 103.67% or 233.47 Kg/cm2 with the addition of clam shells 10% to normal concrete mixtures, while the addition of more than 10% can reduce the concrete compressive strength. Scanning Electron Microscopy results showed a relatively rough surface and many pores on the surface of the concrete due to the addition of a clam shell. Finally, it can be concluded that Anadara granosa clam shells can be used as concrete additives with a maximum addition of 10% of the total weight of normal concrete.
Inovasi Teknologi Bioproses Melalui Pembelajaran Proses Fermentasi Susu menjadi Minuman Yogurt Probiotik Dian Kharismadewi; Sri Wardhani; Rusdiana; Jenny Marshanda Valencia; Putri Angelina; Husnul Khotimah; Efiza Kurniasari
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 12 No. 2 (2026): Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.12.2.349-358

Abstract

Science education is essential to the high school level learning curriculum, particularly Biology Lessons. Every student's learning must develop critical, analytical, innovative, and creative thinking skills by implementing both theoretical and practical approaches. In Biology Education subject, there is learning about bioprocess that involves the use of microbes (bacteria). Community service activities are conducted to illustrate the application of bioprocess technology in the fermentation of milk into probiotic yoghurt drinks and to serve as learning materials that enrich students’ knowledge of the fermentation process. Diversification of milk sources and methods using wet and dry lactic acid bacteria is introduced to students to enhance their knowledge and enrich learning materials related to biological technology innovation concepts. Community service activities are carried out in the form of pre-tests, material presentations, practices, organoleptic tests, post-tests, and filling out questionnaires on the level of student understanding and satisfaction. From the results of the post-test, an increase in the level of student understanding of making yoghurt was obtained by 87%. The results of the organoleptic test showed that all yoghurt products prepared met the SNI 2981: 2009 quality standards for the yoghurt condition test criteria, including texture, odour, taste, and consistency, except for yoghurt from almond milk. The preference level of students for yoghurt reached 96% for yoghurt made from cow's milk with strawberry flavour. This activity positively affects students by enhancing their science skills and knowledge while offering an opportunity to integrate yoghurt product innovation into school entrepreneurship. And so, this program is expected to become the basis for developing biotechnology learning in schools and improving community nutrition.
Optimization of Coal Fly Ash Heating Temperature as an Adsorbent to Improve Acid Mine Water Quality Thoufiq Ridhowan; Eka Sri Yusmartini; Dian Kharismadewi
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 9, No 3 (2024): October 2024
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v9.i3.139

Abstract

Fly ash, a fine dust from coal combustion in steam power plants, is an unused waste material that can be repurposed as a low-cost adsorbent. One type of adsorbent that can be synthesized from fly ash is zeolite-like material (ZLM), which has a porous structure capable of absorbing molecules smaller than or equal to its cavity size. In this study, untreated and heat-activated fly ash at 100, 200, and 300°C was used as an adsorbent for acid mine water. Adsorbent mass varied between 6, 8, 10, 12, and 14 g, mixed with 130 mL of mine water and stirred at 150 rpm for 60 minutes. The results showed that heat activation increased the surface area of the fly ash adsorbent, reaching 22.658 m²/g at 300°C. Heat-treated fly ash at 200 and 300°C showed a more significant reduction in Fe and Mn levels, especially with 8 g of adsorbent. Additionally, all adsorbents, whether heated or not, raised the pH of the acid mine water. The total suspended solids (TSS) were reduced to meet quality standards using 14 g of adsorbent heated to 300°C. These results indicate that coal fly ash adsorbent can be effectively applied for treating acid mine water
Peningkatan Pengetahuan Masyarakat Melalui Pelatihan Pembuatan Minyak Atsiri di Kelurahan Plaju Darat Kota Palembang Eko Ariyanto; Netty Herawati; Robiah Robiah; Heni Juniar; Dian Kharismadewi
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 9 No. 3 (2023): Agrokreatif Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.9.3.355-361

Abstract

Lemongrass (Cymbopogon citratus) is a family medicinal herb commonly used as a kitchen spice. Lemongrass contains essential oils such as citral, myrcene, geraniol, citronellol, and α-oxo bisabolene that have a high-selling value and benefits as a fungal growth inhibitor, antibacterial, anti-insect, and anti-cancer. Socialization about the benefits of lemongrass essential oils and training on producing its essential oils was conducted through community service. The activity material was delivered through a presentation, and training in processing lemongrass to essential oils was conducted through a demo activity directly in front of participants. This community service activity was held in the Plaju Darat urban village meeting hall involving family welfare empowerment representatives, the head of the neighborhood, and the urban village community as participants. Pre-tests and post-tests were given to participants to determine the level of their understanding of the material presented. The test results improved participants’ understanding of the benefits of essential oils and their processing methods. It was concluded that participants understood the benefits of lemongrass essential oils and knew how to produce them.
Penyuluhan Mengenai Desain, Logo, dan Slogan untuk Meningkatkan Pemasaran Produk Bank Sampah Kenanga Palembang sri martini; Erna Yuliwati; Eka Sri Yusmartini; Elfidiah Martini; Dian Kharismadewi; Mardwita Martini; Eko Ariyanto
Jurnal Abdimas Mandiri Vol. 10 No. 2 (2026)
Publisher : UNIVERSITAS INDO GLOBAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36982/jam.v10i2.7560

Abstract

Permasalahan umum yang dihadapi oleh sebagian besar UMKM saat ini adalah ketatnya persaingan untuk memasarkan produk yang dapat bersaing dengan berbagai produk sejenis yang diproduksi oleh industri skala besar yang telah lebih dulu dikenal masyarakat. Salah satu hal yang menjadi tantangan bagi produk UMKM dalam persaingan di pangsa pasar umum dan komersial adalah masih relatif terbatasnya kemampuan untuk membentuk citra atau branding produk. Dengan demikian, Produk UMKM tidak hanya dituntut untuk dapat memperbaiki kualitas produk itu sendiri, tetapi yang tidak kalah pentingnya adalah meningkatkan citra produk dengan cara memberikan desain kemasan, logo, dan slogan yang menarik dan spesifik terhadap produknya.  Identifikasi visual tersebut diharapkan dapat membuat produk lebih mudah dikenali saat bersanding dengan produk sejenis di pangsa pasar komersial.  Penyuluhan dan pelatihan yang diberikan kepada masyarakat pelaku UMKM di Bank Sampah Kenanga di Kawasan 19 Ilir Kotamadya Palembang menunjukan peningkatan yang signifikan. Perbandingan hasil pra-test dan post-test pada sesi evaluasi terhadap wawasan dan keterampilan peserta terkait citra produk mereka yang berbentuk sabun padat, eco enzim, dan anyaman dekorasi ruangan berbahan dasar limbah organik menunjukan peningkatan sebesar 45%
Co-Authors Atikah Dian Dwi Lestari Efiza Kurniasari Eka Sri Yusmartini Eko Ariyanto Elfidiah Elfidiah Martini Eni Efendri Erna Y uliwati Hari Adi Prasetya Husnul Khotimah Innike Abdillah Fahmi Jenny Marshanda Valencia Juniar, Heni Kiagus Ahmad Roni Mardwita Martini Marhaini Muhammad Afrizal Pelantika Muhammad Afrizal Pelantika Muhammad Andika Mandala Putra Netty Herawati Noka, Isara Abda Nurlailah - Nurlailah Putri Angelina Rahadianto Wahyu Triaji Robiah Robiah Rusdiana Shanti Mayasari Sri Martini Sri Martini Sri Martini Thoufiq Ridhowan Wardhani, Sri Winaldo, Reno Yuliwati, Erna Yuyun Niyati Yuyun Niyati