Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal Jurnal Katalisator Rafflesia Journal of Natural and Applied Sciences (RJNAS)
Vicka Andini
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Materials Science & Nanotechnology Medicine & Pharmacology Public Health

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

Found 2 Documents
Search

 1 
ADSORPTION STUDY OF LEAD (Pb²⁺) IONS USING CASSAVA PEEL BIOCHAR: EFFECT OF pH AND CONTACT TIME Elfia, Mega; Etriyanto Arman; Eduwin Saputra; Alfin Surya; Yoravika Dwiwibangga; Vicka Andini; Aidil Onasis; Nadya Br Debora
JURNAL KATALISATOR Vol. 10 No. 2 (2025): Jurnal Katalisator, Volume 10 No 2 Oktober 2025
Publisher : LLDIKTI X Sumbar, Riau, Jambi, Kepri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62769/katalisator.v10i2.3484

Abstract

This study evaluates the adsorption performance of NaOH-activated cassava peel biochar (Manihot esculenta Crantz) for the removal of Pb²⁺ ions from aqueous solutions, with particular focus on the effects of solution pH and contact time. Cassava peel biochar was produced via pyrolysis at 180–350 °C and chemically activated using 0.1 M NaOH. Surface functional groups and morphology were characterized using Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy–Energy Dispersive X-ray (SEM–EDX). Batch adsorption experiments were conducted by varying solution pH (3–8) and contact time (30–120 min), while Pb²⁺ concentrations before and after adsorption were analyzed using Atomic Absorption Spectroscopy (AAS). The results showed that solution pH significantly affected Pb²⁺ adsorption, with the highest adsorption capacity of 9.94 mg/g achieved at pH 5. Contact time also influenced adsorption performance, and the optimum condition was obtained at 90 min, yielding a maximum adsorption capacity of 9.94 mg/g. These findings indicate that NaOH-activated cassava peel biochar exhibits stable and effective Pb²⁺ adsorption under slightly acidic conditions and moderate contact time, highlighting its potential as a low-cost and environmentally friendly adsorbent for Pb²⁺ removal from contaminated wastewater.
Pengaruh Waktu Kontak dan Studi Kinetika Adsorpsi Crystal Violet oleh Adsorben Ampas Kelapa (Cocos nucifera L) Arman, Etriyanto; Vicka Andini; Yoravika Dwiwibangga; Mega Elfia
RAFFLESIA JOURNAL OF NATURAL AND APPLIED SCIENCES Vol. 5 No. 2 (2025): Oktober
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rjna.v5i2.47116

Abstract

Pencemaran perairan oleh zat warna sintetis seperti kristal violet merupakan permasalahan lingkungan yang serius karena sifatnya yang toksik, persisten, dan sulit terurai secara biologis. Penelitian ini bertujuan untuk melihat pengaruh waktu kontak dan mempelajari kinetika adsorpsi kristal violet menggunakan adsorben limbah ampas kelapa yang telah diolah menjadi karbon. Studi kinetika dilakukan dengan memvariasikan waktu kontak antara adsorben dan larutan kristal violet menggunakan massa 0,2 gram dengan konsentrasi kristal violet 50 ppm. Konsentrasi kristal violet sisa dianalisis menggunakan spektrofotometer UV-Vis. Data kinetika adsorpsi dianalisis menggunakan model kinetika orde satu semu dan orde dua semu. Hasil penelitian menunjukkan bahwa waktu kontak optimum diperoleh pada 40 menit dengan kapasitas adsorpsi sebesar 4,83mg/g dan persen adsorpsi sebesar 96,63%. Analisis studi kinetika memperlihatkan bahwa model orde dua semu memberikan kesesuaian yang lebih baik terhadap data eksperimental, ditunjukkan oleh nilai koefisien determinasi (R²) sebesar 0,999 yang lebih tinggi dibandingkan model orde satu semu sebesar 0,7876.
Co-Authors Aidil Onasis Alfin Surya Arman, Etriyanto Eduwin Saputra Etriyanto Arman Mega Elfia Nadya Br Debora Yoravika Dwiwibangga