Article Per Year (5 Year)
p-Index From 2020 - 2025
0.408
P-Index
This Author published in this journals
All Journal Jurnal Periodic Jurusan Kimia UNP
Desy Kurniawati
Kimia UNP
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Pengaruh pH dan Ukuran Partikel Terhadap Penyerapan Malachite Green Menggunakan Biosorben Dari Kulit Langsat (Lancium domesticum) Sutan M Razali; Desy Kurniawati; Edi Nasra; Miftahul Khair
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i1.113477

Abstract

The malachite green dye is one of the harmful dyes produced from various textile industry wastes and needs to reduce by the presence of the waste. The biosorption method is one of the alternative methods used to remove the concentration of malachite green. Biosorption using langsat peel biosorbent proved to be able to absorb malachite green dye. This study using the coloum method by varying the pH of the MG solution and particle size of the biosorbent. In this research, spectronics were used to measure the concentration of the solution and analyze the functional groups on langsat peel before activation, after activation, and after contact using FTIR. Based on the results of the study, it was found that the optimum conditions for each variation were at solution pH 5  with an adsorption rate of 4.962 mg/g and particle size of biosorbent 106 m with an adsorption rate of 15.376 mg/g.
Pengaruh Ukuran Partikel dan Kecepatan Pengadukan Terhadap Penyerapan Fenol Menggunakan Biosorben Kulit Kelengkeng (Dimocarpus longan Lour) Satrio Prinandito; Desy Kurniawati; Alizar Alizar; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (899.746 KB) | DOI: 10.24036/p.v11i1.113417

Abstract

Industry produces phenol liquid waste that pollute the environmental. Phenol is a dangerous organic compound that has hight toxicity so that the presence of phenol in the environment will disrupt the surrounding ecosystem and have an impact on human health. To overcome the problem of environmental pollution, an adsorption method is used by utilizing longan skin as an adsorbent. Lengkeng shell is used as an adsorben able to bind phenol in the environment because it has several active groups such as amines, hydroxyl, carbonyl, and carboxyl which can form hydrogen banding with phenol solution. The purpose of this study was to determine the optimum conditions with variation in adsorbent particel sizes of 106, 150, 250, and 425 mm and stirring speeds of 50, 100, 150, 200, and 250 rpm. Phenol was analyzed using UV-Vis spectrophotometer (Specord 210). Adsorption phenol with lengkeng shell biosorbent obtained optimum conditions at an adsorbent particle size of 106 with adsorption capacity of 4.583 mg/g and stirring speed of 200 rpm with adsorption capacity of 4.200 mg/g.
Co-Authors Alizar Alizar Edi Nasra Miftahul Khair Satrio Prinandito Sutan M Razali