Work

Comparing natural sedimentation and centrifugation of flocculated nanoparticles: Role of homogeneous polymer flocculant towards sustainable environment

Year: 2025

Type: article

Abstract: Magnetic Nanoparticles (MNPs) like Fe₃O₄ are widely used in separation processes due to their magnetic properties. However, they are not colloidally stable due to van der Waals and dipole-dipole attractions, requiring functionalization for stability. This stability makes separation from water difficult, posing environmental and health risks, including nanotoxicity. Traditional methods like Low Gradient Magnetic Separation (LGMS) and High Gradient Magnetic Separation (HGMS) aid separation, with LGMS achieving 97% efficiency via depletion flocculation. This study compares LGMS with depletion flocculation-assisted natural sedimentation and centrifugation, favoring LGMS for efficiency and centrifugation for cost-effectiveness.

Source: Results in Engineering

DOI: 10.1016/j.rineng.2025.105022

Authors: Harichandra Khalingarajah, Asokan Vasudevan, Shaman Raj, Swee Pin Yeap, Suleiman Ibrahim Shelash Mohammad, S. Geetha Subramaniam

Institutions: INTI International University, UCSI University, Zarqa University

Language: English

Topic: Coagulation and Flocculation Studies

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Responsible consumption and production, Clean water and sanitation

Open Access status: gold

Estimated APC paid: $1,940