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Puspita, Endah
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Pembuatan Karbon Serat Sabut Kelapa dan Pengujian Konduktivitas Listriknya Naibaho, Marzuki; Fauzi, Nanang; Puspita, Endah; Bama, Akhmad Aminuddin; Ramlan, Ramlan; Indayaningsih, Nanik
Jurnal Penelitian Sains Vol 24, No 2 (2022)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (515.177 KB) | DOI: 10.56064/jps.v24i2.690

Abstract

Telah dibuat karbon serat serabut kelapa dengan menggunakan metode pirolisi menggunakan suhu 900oC and 1300oC . Serat sabut kelapa di karbonisasi dengan suhu 500oC selama 1 jam dengan suasana inert gas N2. Selanjutnya karbon yang dibuat kemudian direndam dalam larutan KOH 25% selama 24 jam di suhu ruang, lalu dilakukan pengeringan. Pada tahap berikutnya, karbon dipirolisis dalam suasana inert gas, dengan kecepatan kenaikan suhu 5oC/menit sampai pada suhu 900 oC, ditahan selama waktu 2 jam. Perendaman kedua dilakukan dengan menggunakan HCl 2 M selama 24 jam, tiap 30 menit diaduk dengan magnetic stirer, kemudian karbon tersebut dicuci dengan menggunakan aquades sampai mendekati pH netral, lalu ditiriskan dan dikeringkan di dalam oven dengan suhu 60oC. Selanjutnya dilakukan pengujian  konduktivitas listrik.
Sintesis dan Karakterisasi Pasir Besi Sungai Musi Sumatera Selatan Menggunakan Metode Kopresipitasi Puspita, Endah; Melinia, Luh Ayu; Naibaho, Marzuki; Ramlan, Ramlan; Ginting, Masno
Jurnal Penelitian Sains Vol 24, No 3 (2022)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v24i3.717

Abstract

Telah dilakukan sintesis dan karakterisasi pada pasir besi yang berasal dari Sungai Musi - Sumatera Selatan menggunakan metode kopresipitasi. Penelitian ini dilakukan untuk mengetahui pembentukan fasa, struktur kristal, kandungan mineral magnetik dan sifat kemagnetan yang terdapat pada pasir besi. Karakterisasi yang digunakan pada penelitian ini adalah X-Ray Difrraction (XRD), Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX) dan Vibrating Sample Magnetometer (VSM). Berdasarkan hasil XRD menunjukkan pasir besi yang telah disintesis menghasilkan struktur amorf dengan fasa yang terbentuk yakni Enstatite – Ferrosilite (MgSiO3 - FeSiO3 atau (Mg, Fe) SiO3). Hasil SEM-EDX menunjukkan partikel-partikel mengalami aglomerasi dan membentuk agregat dengan ukuran rata-rata partikel sebesar 12,495 μm serta masih terdapat kandungan pengotor (gangue) yang menempel pada bijih besi (Fe) seperti Na, Mg, Al, Si, Ca, V, Cr dan Ti serta terdapat penambahan unsur seperti V dan Cr yang berasal dari proses milling yang mengalami abrasi. Hasil VSM menunjukkan bahwa sampel pasir besi merupakan soft magnet dan bersifat anti-ferromagnetik dengan nilai saturasi (Ms), remanensi (Mr) dan koersivitas (Hc) masing-masing sebesar 0,53 emu/g, 0,04 emu/g dan 376,63 Oe.
Analisa Pasir Besi Alam dari Sungai Musi Sumatera Selatan Melinia, Luh Ayu; Puspita, Endah; Naibaho, Marzuki; Ramlan, Ramlan; Ginting, Masno
Jurnal Penelitian Sains Vol 24, No 3 (2022)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v24i3.716

Abstract

Telah dilakukan penelitian mengenai sifat magnetik dan kandungan pasir besi yang berasal dari Sungai Musi-Sumatera Selatan, Indonesia. Sampel pasir besi diekstraksi menggunakan magnet permanen, kemudian dipreparasi dengan metode milling. Selanjutnya sampel dikarakterisasi menggunakan Scanning Electron Microscopy dengan Energy Dispersive X-ray (SEM-EDX) dan Vibrating Sampel Magnetometer (VSM). Berdasarkan hasil  dari uji SEM-EDX menunjukkan bahwa partikel pasir besi dari sungai musi teraglomerasi dengan ukuran rata-rata ± 0.5 m serta terdapat kandungan pengotor (gangue) antara lain Si, Ti, Mg, Al dan Mn sehingga sampel pasir besi bersifat ferromagnetik dan termasuk kategori semi-hard-magnet dengan nilai saturasi (Ms), remanensi (Mr) dan koersivitas (Hc) masing-masing sebesar 46,61 emu/g,  8,72 emu/g dan 322,09 0e.
PENERAPAN DIGITAL MARKETING DAN PEMBUATAN NIB SEBAGAI STRATEGI PEMASARAN UMKM Kader, Mukhtar Abdul; Toto, Toto; Puspita, Endah; Cahyani, Ika; Pauji, Irfan Hilmi
Jurnal Abdi Insani Vol 12 No 1 (2025): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v12i1.1626

Abstract

Kertayasa Village is one of the Self-Help Villages which is located quite far from Ciamis Regency and Internet Access is Difficult, with Independent Campus activities in the Independent Learning Campus Independent Program where one of the programs is Thematic Real Work Lectures which are held for one semester. Kertayasa Village was chosen because the village ranking obtained needed to be upgraded to become an independent village, its location is quite far from Ciamis City so that internet access is very difficult, it is hoped that in the future Kertayasa Village will be able to increase its level to become a self-supporting village: its people will be able to use the internet to increase their sales. . This KKNT activity focuses on increasing the capabilities of MSMEs by using various online media. The method used is providing direct assistance with residents, especially teenagers who already have good digital marketing literacy competencies, to small businesses, starting from processing permits, product packaging, creating marketplaces and marketing methods using digital marketing concepts. Micro, small and medium enterprises in Kertayasa village. Several micro businesses already have Business Identification Numbers (NIB). as an identity and increase consumer trust, creating social media, including Instagram Business, Fan Pages, Professional Facebook, YouTube ads. For Micro Businesses that have many types of products aimed at markets such as Shopee and Tokopedia. Next, collaborate with the community, especially youth youth organizations, in disseminating product information through digital marketing concepts. Collaboration between the Faculty of Economics and Kertayasa Village through the creation of a Micro Business NIB, Digital Marketing Assistance is able to increase market size and citizen competency.
Kepadatan Probabilitas Spektral untuk Tingkat Noise Sekitar Seismik Broadband Puspita, Endah; Eridawati; Damanik, Nancy
Journal of Computation Physics and Earth Science (JoCPES) Vol 1 No 1 (2021): Jurnal Fisika Komputasi dan Ilmu Kebumian
Publisher : Yayasan Kita Menulis - JoCPES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53842/nc1awf74

Abstract

The time-series approach is commonly utilized to get to the estimation of the likelihood thickness work of control ghostly densities (PDF PSD) of waveform information. This paper is concerned with the introduction of the evaluation of waveform commotion to degree the likelihood thickness work (PDF) be done inside, we utilized the metadata from a stock, a parser occurrence of DNP (Denpasar, Bali, Indonesia), IGBI (Ingas, Bali, Indonesia), and PLAI (Plampang, NTB, Indonesia) from BMKG IA-Networks and computations are based on the schedule utilized by McNamara Demonstrate. The point of this paper to characterize the current and past execution of the stations and recognizing the data on clamor levels at BMKG IA-Networks Station. The result of this paper shows the consistency of the unearthly is displayed the DNP, IGBI, and PLAI organize to confirm the quality of information conjointly acts as a test execution broadband arrange to the time taken by the broadband organize within the field and examination the Lombok earthquake in 2018.
MORPHOLOGYCAL, ELEMENTAL CONTENT, AND PHYSICAL PROPERTIES OF CLEANED CLINOPTITOLITE ZEOLITE (10X) USING SONICATION AND MICROWAVE Puspita, Endah; Naibaho, Marzuki; Ramlan, Ramlan; Ginting, Masno
Indonesian Physical Review Vol. 6 No. 1 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i1.204

Abstract

This research was conducted to determine the morphology, elemental content and physical properties of the zeolite samples before and after cleaning. The characterization used in this study is the Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX). Based on the results of SEM-EDX, it was shown that the 200 mesh zeolite sample and the zeolite that passed the filter had a non-spherical particle shape and no visible pores on the surface, while the microwave zeolite sample had an aggregate shape and visible pores on the particle surface which were very clear. In addition, in the 200 mesh zeolite sample, filtered zeolite and microwave zeolite each had an Al content percentage of 1.64%, 3.18 and 3.80% and a Si content of 7.58%, 15.15% and 18 .38%.
REVIEW OF ADSORPTION OF HEAVY METALS BY ADSORBENT MnFe2O4 – ZEOLITE IN WATER Melinia, Luh Ayu; Naibaho, Marzuki; Puspita, Endah; Ramlan, Ramlan; Ginting, Masno
Indonesian Physical Review Vol. 6 No. 2 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i2.215

Abstract

The existence of quality water on earth is essential for life and the consumption of existing living things. The problem of water pollution is a matter of great concern in world researchers' management of water resources. Heavy metals have a toxic effect on humans and the environment. This paper reviews the characteristics and methods of synthesis of MnFe2O4 and zeolite materials as adsorbents for removing heavy metal ions in water with critical properties such as surface area, magnetic properties, and adsorption capacity. We have collected data regarding the appropriate method for synthesizing MnFe2O4 and zeolite nano adsorbents. We have accumulated much data on the properties of MnFe2O4 and zeolite materials and the optimum adsorption capacity for heavy metal ions. Experimental factors such as pH, temperature, adsorption capacity, and ionic strength affecting metal ion removal have also been explored.
Co-Authors Akhmad Aminuddin Bama, Akhmad Aminuddin Cahyani, Ika Damanik, Nancy Eridawati Fauzi, Nanang Kader, Mukhtar Abdul Masno Ginting Melinia, Luh Ayu Naibaho, Marzuki Nanik Indayaningsih Pauji, Irfan Hilmi Ramlan, H. TOTO TOTO