Preparation of Mg-doped coffee waste for efficient removal of methylene blue and lead from water

Document Type

Article

Source of Publication

Heliyon

Publication Date

3-1-2025

Abstract

Water pollution, particularly from industrial sources, poses severe environmental and health risks, necessitating cost-effective and sustainable solutions. This study investigates the preparation and application of magnesium-doped coffee waste biochar (Mg-CW) for the removal of methylene blue (MB) and lead ions (Pb2+) from water. Mg-CW, synthesized via one-step pyrolysis at 300°C, demonstrated remarkable adsorption capacities of 1024.88 mg/g for MB and 349.59 mg/g for Pb2+. Adsorption efficiencies were optimal at pH 12 for MB and pH 5 for Pb2+, attributed to enhanced electrostatic interactions and complexation mechanisms. Regeneration studies revealed that Mg-CW retains over 95% adsorption efficiency after multiple cycles, highlighting its durability and cost-effectiveness. This study provides a scalable and eco-friendly approach for industrial wastewater treatment, utilizing waste-derived materials to address pressing environmental challenges.

ISSN

1879-8440

Publisher

Elsevier BV

First Page

e43091

Last Page

e43091

Disciplines

Engineering

Keywords

Mg-doped coffee waste, methylene blue removal, lead removal, water pollution, adsorption efficiency

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Indexed in Scopus

no

Open Access

yes

Open Access Type

Gold: This publication is openly available in an open access journal/series

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