Work

Harnessing the Adsorption Capacity of Typha domingensis for the Sustainable Elimination of Noxious Bromophenol Blue Dyes from Aqueous Systems

Year: 2025

Type: article

Abstract: Synthetic dyes in industrial wastewater pose serious environmental challenges due to their toxicity and persistence. This study explores a sustainable and affordable biosorbent made from Typha domingensis leaves powder (TDLP) for removing bromophenol blue (BPB) dye from water. The material was characterized using FTIR, SEM-EDS, and pHpzc analyses to understand its surface chemistry, morphology, and charge behavior. Batch adsorption experiments were carried out to evaluate the influence of pH, contact time, dye concentration, and adsorbent dose. Under optimal conditions (pH 2.0, 10 mg L−1 BPB, 0.1 g TDLP per 50 mL, 60 min, 300 K), TDLP achieved a 92% dye removal efficiency. The adsorption process followed the pseudo-second-order kinetic model and fit best to the Langmuir isotherm, indicating monolayer adsorption with a maximum capacity (qm[?down]?>ₘ) of 15.61 mg g−1. Thermodynamic analysis showed that the process was spontaneous and endothermic. The biosorbent retained over 80% of its efficiency after five reuse cycles, confirming its durability. Owing to its natural abundance, low cost, and biodegradability, T. domingensis provides an eco-friendly and circular solution for dye removal, supporting cleaner water management and sustainable environmental practices.

Source: Sustainability & Circularity NOW

DOI: 10.1055/a-2759-6085

Authors: Abul Bashar, Al Shariar Hasan, Rezaul Haque, Palash Kumar Dhar, Sagar Kumar Dutta

Institution: Khulna University

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: diamond

Funder: Khulna University