Buletinul Institutului Politehnic din Iași Secția Chimie și Inginerie Chimică ISSN: 2537-2947
ISSN-L: 0254-7104
2025, Volume 71(75), Issue 2 (JUNE), pp. 55 - 72
Biosynthesis of Gold Nanoparticles Using Averrhoa bilimbi for Chromium
Detection in Wastewater
ALFIAN FADHILAH ALMINDA, Department of Food Nanotechnology, Politeknik
AKA Bogor, Indonesia ANISSYA DWI KUSUMANINGRUM WIBISONO, Department of
Food Nanotechnology, Politeknik AKA Bogor, Indonesia AQILAH NURSAKHA,
Department of Food Nanotechnology, Politeknik AKA Bogor, Indonesia MITHA
YUSTIKA SYARI, Department of Food Nanotechnology, Politeknik AKA Bogor,
Indonesia SYIFA NUR’AFIYAH, Department of Food Nanotechnology,
Politeknik AKA Bogor, Indonesia YUDHISTIRA DIMAS NUGROHO, Department of
Food Nanotechnology, Politeknik AKA Bogor, Indonesia ZALFA JAWZA KAMILA,
Department of Food Nanotechnology, Politeknik AKA Bogor, Indonesia MOHAMMAD JIHAD MADIABU, Department of Analytical Chemistry, Politeknik AKA
Bogor, Indonesia ACHMAD NANDANG ROZIAFANTO, Department of Food
Nanotechnology, Politeknik AKA Bogor, Indonesia,
anandangr@yahoo.com
Abstract Heavy metal chromium (Cr) is one of the substances that can
cause water pollution. Although chromium is highly useful in various aspects
of life, including in the industrial sector, its excessive use also
generates waste that has the potential to damage the environment and pose
risks to human health. The analysis of chromium (Cr) presence in water was
conducted using the biosynthesis method of gold nanoparticles with Averrhoa
bilimbi as a bioreductant. Chromium, as one of the heavy metals, has many
industrial applications; however, its excessive use can pollute the
environment and endanger human health. The method used in this study is
colorimetry, which is known to be simple, effective, economical, and
accurate. The analysis results showed that gold nanoparticles synthesized
from Averrhoa bilimbi could detect chromium at a concentration of 10 mM
under optimal conditions at pH 5, temperature 75°C, and incubation time of 5
minutes. The synthesized gold nanoparticles proved to be selective and
sensitive in detecting the presence of chromium, thus offering a potential
solution for monitoring chromium pollution in aquatic environments.
Keywords: Chromium, Heavy metal, Bioreductant, Gold nanoparticles, Averrhoa
bilimbi, Sensitivity and selectivity, Biosynthesis