Article Per Year (5 Year)
p-Index From 2021 - 2026
0.778
P-Index
This Author published in this journals
All Journal Alchemy : Journal of Chemistry The Journal of Pure and Applied Chemistry Research Journal of Islamic Pharmacy ANNALES BOGORIENSES International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Surya : Jurnal Pengabdian Kepada Masyarakat al Kimiya : Jurnal Ilmu Kimia dan Terapan Journal of Research on Community Engagement Annales Bogorienses
Lilik Miftahul Khoiroh
Jurusan Kimia Fakultas Sains Dan Teknologi Universitas Islam Negeri Maulana Malik Ibrahim Malang
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Other

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 13 Documents
Search

 1   2 
Adsorptive Performance of Gelatin-Hematite Composite Synthesized from Iron Lathe Waste Using Guava Leaf Extract for Pb(II) Removal from Aqueous Solutions Khoiroh, Lilik Miftahul; Barroroh, Himmatul; Taufik, Moh; Royyanuddin, Moh; Al Akbar, Ramadhana Fatahillah; Amaliyah, Nada Rifqi; Yulianti, Eny
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol. 12 No. 1 (2025): June 2025
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v12i1.40817

Abstract

Hematite was successfully synthesized from iron lathe waste using guava leaf extract as a reducing agent. To enhance adsorption capacity, hematite was composited with gelatin, a polymer containing amide and carboxylate functional groups. The hematite-gelatin composite was employed as an adsorbent for Pb solutions. This study investigated the material's structure and the adsorbent's performance, including the composite's optimum dosage and contact time. Characterization techniques included XRD, FTIR, SEM-EDX, and AAS analyses. XRD analysis revealed that the hematite-gelatin composite exhibited a high degree of crystallinity. FTIR analysis of the guava leaf extract spectrum identified phenolic vibrational absorption with strong intensity at 3447 cm-1 (O-H stretching) and a weak C-H vibrational bond at 2928 cm-1. An ester group (C=O) at 1726 cm-1 indicated the presence of tannin compounds. For the hematite-gelatin composite, a C-O absorption band was observed at 1075 cm-1, along with Fe-O absorption bands at 430 and 519 cm-1. The SEM results show that the gelatin-hematite composite has a hollow and layered surface. The EDX analysis results show that the material contains C, N, O, Pb, and Fe, which indicates that gelatin has interacted with Pb when it becomes a composite and has absorbed Pb at a level of 1.4% after adsorption. Performance evaluation of the hematite-gelatin composite demonstrated high adsorption efficiency for Pb solutions. The adsorbent exhibited a high adsorption capacity of 800 mg/g with an optimal adsorbent dosage of 15 ppm and an optimal contact time of 70 minutes. The adsorption kinetics of the hematite-gelatin composite followed a pseudo-first-order adsorption model.
Synthesis of Hematite Pigment (A-Fe2O3) from Iron Lathe Waste using Precipitation-Sonication Method as Anti-Swelling on Wood Rahmawati, Dewi Elok; Khoiroh, Lilik Miftahul; Ningsih, Rachmawati; Yusniyanti, Febi; Solawati, Wariatus; Sari, Puspa
International Journal of Mechanical Engineering Technologies and Applications Vol. 1 No. 2 (2020)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2020.001.02.5

Abstract

Iron lathe waste powder has the potential as a raw material in the synthesis of hematite pigments. Hematite pigments have many advantages, one of which is anti-swelling properties that can maintain the dimensions of wood. Hematite pigment synthesis was carried out using the precipitation-sonication method. The precipitation stage uses an ammonium hydroxide solution as a precipitating agent. Stages of sonication using the PEG-6000 template were performed at different times were 30, 45, and 90 minutes then calcined at 750 ° C for 3 hours. The samples were characterized by X-ray diffraction (XRD), color reader, and scanning electron microscope-energy dispersive X-Ray (SEM-EDX). The result confirmed that a ferrihydrite phase obtained after the precipitation process and transform into hematite after the calcination process with the highest degree of crystallinity for 90-minute sonication. From a color reader, the brightness and redness degrees decrease with increasing time. Scanning electron microscope results illustrated that the morphology was not uniform with the particle size getting smaller with increasing sonication time. The EDX results show that hematite pigments still contain impurities such as carbon. The swelling test indicated that the highest stability in hematite-pigmented wood increased as increasing in the weight of pigment.
Synthesis and Characterization of Alginate-Cellulose Xanthate Beads from Corn Stalk with NaCl As Porogen Rohmatullah, Wahyu Adhi Putra; Yulianti, Eny; Khoiroh, Lilik Miftahul; Mahmudah, Rif'atul
Annales Bogorienses Vol. 24 No. 2 (2020): Annales Bogorienses
Publisher : BRIN

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

Abstract

In this study, the synthesis of porous beads from corn stalks was carried out. The cellulose extracted from corn stalks was converted into cellulose xanthate and combined with alginate to form porous alginate-cellulose xanthate beads by the ionic gelation method. This study attempted to use sodium chloride (NaCl) as a porogen and zinc acetate as a crosslinker. Beads were characterized to determine the porosity, swelling properties, and functional groups using Fourier Transform Infra-Red (FTIR). The geometry of beads was analyzed by optical microscopy, and its surface morphology was analyzed by Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX). The results showed that corn stalks as agricultural waste material could be used to synthesize porous beads material. The swelling and porosity of beads increased with increasing concentration of NaCl. The presence of porogen has increased beads formation. The results demonstrate the crosslinks between zinc acetate and alginate were successfully characterized using FTIR. NaCl concentration of 9.5% resulted in the highest swelling properties (52.80%) and porosity (81.4%) of the beads.
Co-Authors A. Ghanaim Fasya Abdul Hakim Ahmad Hanapi Akhmad Sabarudin Al Akbar, Ramadhana Fatahillah Amaliyah, Nada Rifqi Bambang Ismuyanto CHOIRUN NISA Diah Mardiana Elysia Dwi Nuraini Eny Yulianti Eny Yulianti Eny Yulianti, Eny Himmatul Barroroh Kartika, Siska Ela Latifah, Annazmil Fayros Mahmudah, RIf'atul Nasution, Annio Indah Lestari Puspa Sari, Puspa Rachmawati Ningsih Rahmawati, Dewi Elok Raudatul Jannah Rif'atul Mahmudah Rohmatullah, Wahyu Adhi Putra Royyanuddin, Moh Salsabila, Unik Hanifah Solawati, Wariatus Sri Harini Taufik, Moh Vina Nurul Istighfarini Wahyu Adhi Putra Rohmatullah Yusniyanti, Febi