Claim Missing Document
Check
Articles

Found 2 Documents
Search

Application of Nanosilica from Rice Husk Ash as Iron Metal (Fe) Adsorbent in Textile Wastewater Rusdianasari Rusdianasari; Muhammad Taufik; Yohandri Bow; Maryam Seyaski Fitria
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 5, No 1 (2020): February 2020
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v5.i1.7

Abstract

Heavy metals are considered hazardous to health if they accumulate excessively in the body. One way to remove iron metal ions by adsorption process uses adsorbents. In this study, removal of heavy metals such as ferrous metal (Fe) was adsorbed using an adsorbent in the form of nanosilica. Nanosilica is made from rice husk ash where rice husk ash contains 80-90% silica so that it can be utilized as a raw material in nanosilica synthesis. Synthesis of nanosilica was carried out using a solvent in the form of KOH with a variation of 1.5M concentration; 2.5M; 3.0M; 3.5M and 4.5M. The five types of nanosilica were applied to textile waste containing ferrous metal (Fe) with variations in a contact time of 5, 10, 15, 20, and 25 minutes. Waste containing iron metal that has been adsorbed was analyzed by atomic absorption spectrophotometry (AAS) to see the remaining iron content. From the analysis of AAS produced the smallest iron concentration of 0.186 ppm in nanosilica with 1.5 M KOH solvent. Nanosilica with 1.5M KOH solvent was characterized using a Scanning electron microscopy (SEM) -Energy Dispersive X-ray (EDX) tool to obtain a surface morphological size of 0.44 µm with 28.95% SiO2 content. 
Analisis Kadar Air Dan Iodium Pada Garam Konsumsi Mulyadi; Anerasari Meidinariasty; Muhammad Taufik
Jurnal Multidisipliner Kapalamada Vol. 2 No. 03 September (2023): JURNAL MULTIDISIPLINER KAPALAMADA
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM Azramedia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Biodiesel merupakan sumber energi alternatif yang dapat menggantikan bahan bakar solar berbasis minyak bumi. Pada penelitian ini pembuatan biodiesel menggunakan bahan baku dari CPO Off Grade, dilakukan dengan radiasi gelombang mikro. Pemanasan dalam oven microwave memiliki karakteristik yang berbeda dari pemanasan tradisional, karena panas dihasilkan secara internal sebagai akibat dari getaran molekul bahan yang dipanaskan oleh gelombang mikro. Faktor yang mempengaruhi produksi biodiesel adalah rasio molar umpan dan waktu. Oleh karena itu, penelitian ini dilakukan bertujuan untuk mengetahui pengaruh rasio mol umpan (1:6, 1:12) dan waktu (10, 20, 30, 40 dan 50 menit) yang digunakan terhadap kualitas dari biodiesel yang dihasilkan. Analisis yang dilakukan meliputi analisis nilai rendemen, densitas, viskositas, bilangan asam, titik nyala dan kadar air. Rendemen biodiesel yang diperoleh memenuhi standar SNI, dimana rendemen, densitas, angka asam, kadar air dan titik nyala berturut-turut adalah 40.916%, 0.883 – 0.879 gr/cm3, 0.2805 – 0.561%, 0%, 163.5 – 201.2 °C.