Back to Search Start Over

Mino-modified biomass for highly efficient removal of anionic dyes from aqueous solutions

Authors :
Junli Zheng
Shaohong You
Chen Kaiwei
Yuanli Liu
Peng Gao
Linlin Du
Lili Ma
Source :
Journal of the Taiwan Institute of Chemical Engineers. 119:136-145
Publication Year :
2021
Publisher :
Elsevier BV, 2021.

Abstract

The excessive discharge of dye wastewater is a great threat to human health and environment with the development of industry. And it is of great significance to use biomass materials to remove dyes from wastewater with the low cost, renewability and environmental friendliness. In this study, the amine-modified passion fruit peel (ACPFP) was prepared by amination reaction, which exhibited highly efficient removal for anionic dyes (methyl orange (MO) and amaranth (ART)). The adsorption capacities of ACPFP for MO and ART were 1530.81 and 970.87 mg⋅g−1, respectively. And the adsorption conditions (pH, ionic strength, temperature, initial dye concentration, and contact time) and mechanism (kinetic and isotherm models) were investigated. The results revealed that 99% of MO and ART was removed in the best adsorption conditions: pH=5, an adsorbent dose of 1 g⋅L−1, 600 mg⋅L−1of MO and ART initial concentration. The adsorption process correlated well with the pseudo-second-order kinetic model and the Langmuir isotherm. And ACPFP had good adsorption selectivity, stability and recyclability for anionic dyes. In conclusion, ACPFP has broad application prospects in actual water treatment.

Details

ISSN :
18761070
Volume :
119
Database :
OpenAIRE
Journal :
Journal of the Taiwan Institute of Chemical Engineers
Accession number :
edsair.doi...........1ad983375a28352d1b9c934e555f79c4