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Embun Rachma Haqiqi

Universitas PGRI Madiun

Author-ID : 3711153

Chemical Engineering, Chemistry & Bioengineering Chemistry

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Articles

Studi Awal Kemampuan Adsorpsi Komposit Kulit Telur Ayam dengan Sekam Padi sebagai Adsorben Metil Orange Embun Rachma Haqiqi
CHEESA: Chemical Engineering Research Articles Vol 1, No 1 (2018)
Publisher : Universitas PGRI Madiun

Industri tekstil berkontribusi atas terjadinya pencemaran lingkungan, yaitu pencemaran perairan oleh limbah zat warna tekstil. Pada penelitian ini, kulit telur ayam dan sekam padi dipreparasi sebagai adsorben dalam rangka mengatasi masalah limbah zat warna tekstil. Metode penelitian terdiri dari proses preparasi adsorben, adsorpsi, dan pengukuran menggunakan spektrofotometer UV-Vis. Proses adsorbsi melibatkan 5 sampel adsorben komposit dengan variasi rasio 3:1, 2:1, 1;1, 1:2, dan 1:3. Berdasarkan hasil penelitian, adsorben kulit telur ayam yang dikombinasikan dengan sekam padi dan variasi rasio 1:3 mampu mengadsorbsi metil orange dari larutan sampai sebesar 55,90%. Sehingga, cangkang telur ayam dan sekam padi sangat berpotensi untuk dimanfaatkan sebagai adsorben. Faktor yang mendukung potensinya sebagai adsorben adalah karakter gugus fungsi dan keberadaannya di alam yang mudah ditemukan, melimpah, serta ekonomis.

Influence of Chicken EggShell Powder Ratio with Coarse Rice Husk on Methyl Orange Removal from Aqueous Solution Embun Rachma Haqiqi; Dwi Ima Hikmawati
CHEESA: Chemical Engineering Research Articles Vol 2, No 1 (2019)
Publisher : Universitas PGRI Madiun

Chicken eggshell and rice husk waste have been succesfully used as a potential adsorbent of methyl orange (MO). In this study, after the washing and drying process, chicken eggshells were mashed while the rice husk was left intact. Chicken eggshell powder and coarse rice husk were combined and varied its composition ratio by 3: 1, 2: 1, 1: 1, 1: 2, and 1: 3. The adsorption process of 50 mL MO 20 ppm in aqueous solution with 11 grams of adsorbent was measured using the UV-Vis Spectrophotometer Genesys 20 at 465 nm. Based on the results of the study, the adsorbent with a variation of 1: 1 in ratio was able to adsorb MO from the solution up to 27.70% within 60 minutes.

Surface Chemical Structure and Morphological Analysis of Fallen Teak Leaves (Tectona grandis) Powder for Methylene Blue Adsorption Dwi Ima Hikmawati; Embun Rachma Haqiqi
CHEESA: Chemical Engineering Research Articles Vol 2, No 1 (2019)
Publisher : Universitas PGRI Madiun

In recent year, the research focus has been shifted toward developing of an environmentally friendly system to eliminate any pollutants from Waste. The potential of fallen teak leaves powder for removal of methylene blue has been succesfully carried out by batch adsorption system. The purpose of this study is to characterize an adsorbent obtained from local fallen teak leaves. The characterization focused on the surface of chemical structure analysis obtained from Fourier Transform Infrared (FTIR) spectroscopy and morphological analysis by Scanning Electron Microscopy (SEM) in order to get an idea fuctional group as active site and textural properties. The FTIR results have explaned the presence of some functional groups such as –OH, C=C, COO–, CO, NO2 on FTLP surface that could be potential adsorption sites for interaction with MB molecules. The SEM photographs morphology of FTLP surface has a rough surface with almost more non-uniform.

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