Work

Enriched phosphate adsorption using lanthanum organic frameworks decorated papaya biochar supported alginate composite

Year: 2025

Type: article

Abstract: The enhanced phosphate level (>0.5 mgL −1 ) in water bodies leads to eutrophication. Hence, the current study focuses on alginate based papaya biochar (PBC) coated lanthanum organic frameworks (LOF) supported composite namely APBCLOF biopolymer composite was synthesized by the hydrothermal way for the phosphate removal from water. The surface morphology, functional groups and composition of elements in the developed APBCLOF composite were analyzed by SEM, FTIR and EDAX respectively. The factors influencing phosphate adsorption, including solution pH, temperature, contact time and co-ions were carried out under batch level. Within 30 min, the prepared APBCLOF composite reached maximum phosphate adsorption capacity (47.5 mg/g) at neutral pH 7. Freundlich isotherm was proved as more effective than other isotherm models for describing phosphate adsorption. As the temperature increases, the reaction and diffusion rate also increased, which was illustrated by kinetic studies. The thermodynamic studies confirmed that phosphate adsorption on APBCLOF composite occurred spontaneously. The APBCLOF composite has achieved a 70 % phosphate removal efficiency upto 5 cycles. The field study results confirmed the suitability of the developed APBCLOF composite under field conditions.

Source: Journal of Molecular Liquids

DOI: 10.1016/j.molliq.2025.127286

Authors: Sesuraj Sebastin Thomas, Natrayasamy Viswanathan, Soodamani Periyasamy, Bandar Ali Al-Asbahi

Institutions: Anna University, Chennai, Hohai University, King Saud University

Language: English

Topic: Phosphorus and nutrient management

Subfield: Waste Management and Disposal

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: hybrid

Estimated APC paid: $3,480