Article Per Year (5 Year)
p-Index From 2019 - 2024
0.23
P-Index
This Author published in this journals
All Journal EKSAKTA: Journal of Sciences and Data Analysis Khazanah: Jurnal Mahasiswa Bulletin of Chemical Reaction Engineering & Catalysis
Ahmad Said
Industrial Engineering, Cipasung College Of Technology, Tasikmalaya, Indonesia
Religion Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Preparation of Low-cost Adsorbent Based on Mango Leaf (Mangefira Indica L) Biomass for Methylene Blue (MB) Adsorption Muhammad Miqdam Musawwa; Annisa Fajriati; Imam Sahroni; Ahmad Said
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 3, ISSUE 1, February 2022
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/EKSAKTA.vol3.iss1.art3

Abstract

Preparation of leaf mango (Mangefira Indica L)-based adsorbent and its evaluation to reduce methylene blue (MB) concentration have been conducted. Two materials: ads-pristine and ads-CTAB which are referred as native leaf mango adsorbent and CTAB modified leaf mango have been prepared in this study. Cetyltrimethylammonium bromide (CTAB) is cationic surfactant usually used to modify and increase the surface area of the adsorbent for a specific purpose. The materials obtained were characterized by the Fourier Transform Infra-Red (FTIR) and the Scanning Electron Microscope (SEM) with general result, there were detected functional groups indicated the active sites on the adsorbent such as -OH, C-O, C=C. Ads-CTAB was specifically characterized with appearing of C-H aliphatic as the tail of CTAB molecule. SEM images show that both materials have roughness surface and irregular cavities. Additional of CTAB on the surface led the more regularly surface. The optimum pH was in basic region (8), while the optimum adsorbent mass and MB concentration are not clearly found due to the chart still increasing. However, the highest qe was found by 0.01 g of ads-pristine and ads-CTAB with the value 967.25 and 950.75 mg g-1 respectively. As the further evaluation, with the 0.5 adsorbent mass it may be applicated on the MB concentration at around 4000 mg L-1. Kinetics model of this adsorption was followed pseudo second order reactions.
PEMISAHAN HIDROSOL HASIL PENYULINGAN MINYAK ATSIRI DENGAN METODE ELEKTROLISIS UNTUK MENINGKATKAN RENDEMEN MINYAK Ahmad Said; Retno Harti; Arief Dharmawan; Tasyrifatur Rahmah
Khazanah: Jurnal Mahasiswa Vol. VII, No. 2, Januari 2015
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/khazanah.vol7.iss2.art6

Abstract

Hidrosol adalah produk samping distilasi minyak atsiri. Dalam dunia industri, keberadaan hidrosol tidaklah diperhatikan untuk rendemen minyaknya. Hidrosol merupakan cairan emulsi dari minyak yang terikat oleh molekul air. Dalam penelitian ini, hidrosol dipisahkan dengan tujuan untuk mendapatkan minyak yang dapat meningkatkan rendemen minyak atsiri.Pemisahan hidrosol dilakukan dengan metode elektrolisis. Dengan adanya elektron yang mengalir dari anoda, diharapkan agar tegangan antarmuka dari minyak dan air dalam hidrosol dapat terpisahkan. Metode elektrolisis dilakukan dengan 4 (empat) tahapan: identifikasi senyawa minyak hasil distilasi, elektrolisis hidrosol, optimasi elektrolisis hidrosol, dan identifikasi senyawa kimia minyak hasil elektrolisis. Minyak hasil distilasi diuji dengan GC-MS untuk dijadikan sebagai pembanding/standar. Elektrolisis hidrosol dilakukan dengan 3 (tiga) variabel, yakni jenis elektroda, waktu elektrolisis, dan besar tegangan. Optimasi dilakukan dari perlakuan eletrolisis hidrosol yang optimal. Minyak hasil elektrolisis diuji kembali dengan GC-MS dan dibandingkan dengan standar untuk melihat kualitasnya.Hasil elektrolisis menyatakan bahwa jenis elektroda yang paling baik adalah seng. Waktu elektrolisis optimal dengan menggunakan seng terjadi pada waktu 60 menit dengan besar tegangan 20V. Minyak hasil elektrolisis dengan elektroda seng hasil optimasi memberikan kualitas minyak yang lebih baik dari minyak hasil distilasinya. Hal ini dinyatakan secara kuat dari kadar patchouli alcohol dalam minyak hasil elektrolisis yaitu 36,40%, sedangkan dalam minyak hasil distilasi yakni 33,46%. Kadar patchouli alcohol mengalami kenaikan hingga 0,08%.
Preparation of TiO2-SiO2 using Rice Husk Ash as Silica Source and The Kinetics Study as Photocatalyst in Methyl Violet Decolorization Is Fatimah; Ahmad Said; Uun Ayil Hasanah
Bulletin of Chemical Reaction Engineering & Catalysis 2015: BCREC Volume 10 Issue 1 Year 2015 (April 2015)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.10.1.7218.43-49

Abstract

Preparation, characterization and utilization of TiO2-SiO2 as photocatalyst for methyl violet (MV) decolorization has been conducted. In this research, preparation of TiO2-SiO2 was developed based on natural renewable silica source; rice husk ash (RHA) via a sol-gel technique. The composite was formed by the dispersing of titanium isopropoxide as titania precursor into the gel of silica followed by aging, drying and calcination. The TiO2-SiO2 sample was characterized by powder X-ray diffraction (XRD), diffuse reflectance-UV Visible spectrophotometric analysis (DRUV-Vis), gas sorption analyzer and Scanning electron micrograph (SEM) before its utilization as photocatalyst in methyl violet photooxidation. As comparison to the physicochemical character study, the synthesis of TiO2-SiO2 by using tetraethyl ortosilicate (TEOS) was performed as a confirmation. Result showed that prepared TiO2-SiO2 has the character similar to TiO2-SiO2 as synthesized by TEOS precursor. The formation of crystalline titania in anatase and rutile phase was identified with increasing surface porosity data and the value of band gap energy which sufficiently contribute to a photocatalytic mechanism. The character data are in line with the kinetic data of methyl violet decolorization. From the compared photooxidation, photolysis, photocatalysis and adsorption process, it can be concluded that TiO2-SiO2 acts efficiently as a photocatalyst. © 2015 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0)
Co-Authors Annisa Fajriati Arief Dharmawan Imam Sahroni Is Fatimah Muhammad Miqdam Musawwa Retno Harti Tasyrifatur Rahmah Uun Ayil Hasanah Uun Ayyil Hasanah