Work

Analysis Congo Red Dye adsorption on hydrochar and nano-Hydrochar from Areca catechu: Synthesis, characterization, and comparative study

Year: 2025

Type: article

Abstract: Industrial wastewater containing dyes like Congo red poses serious environmental and health risks due to its high toxicity, resistance to conventional treatments, and stability under environmental conditions.Adsorption has emerged as a promising alternative for dye removal due to its simplicity, cost-effectiveness, and sustainability.In this study, hydrochar (HC) and nano-hydrochar (nano-HC) were synthesized from Areca catechu (betel nut husk) and evaluated for their ability to adsorb Congo red.High-energy milling was applied to reduce the hydrochar to nanoscale, significantly enhancing its surface area, active site availability, and adsorption efficiency.Nano-HC demonstrated a maximum adsorption capacity of 596.617 mg/g, surpassing HC (356.132mg/g) and raw Areca husk (128.654mg/g).The adsorption process followed pseudo-second-order kinetics and Langmuir isotherm models, indicating chemisorption and monolayer adsorption behavior.The findings highlight the potential of Areca catechu-derived nano-HC as an eco-friendly, cost-effective adsorbent for dye-contaminated wastewater treatment.This study emphasizes the importance of sustainable biomass utilization and advances in particle engineering for environmental remediation.

Source: Journal of Ecological Engineering

DOI: 10.12911/22998993/201235

Authors: Robiatul Adawiyah, Yulizah Hanifah, Neza Rahayu Palapa

Institutions: Sriwijaya University, National Research and Innovation Agency

Language: English

Topic: Adsorption and biosorption for pollutant removal

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: gold

Estimated APC paid: $330