Environmental Studies and Forestry

Coagulation of trace arsenic and cadmium from drinking water using titanium potassium oxalate

J. Zhou, Y. Liu, et al.

Discover how titanium potassium oxalate revolutionizes drinking water safety by effectively removing arsenic and cadmium, outperforming traditional coagulants. This innovative solution, presented by Juanjuan Zhou, Yanwei Liu, Bingqian Li, Huashou Li, Guikui Chen, and Rongliang Qiu, not only enhances water quality but also reduces hardness, making it a cost-effective choice for environmental health.

00:00

Playback language: English

Index

Abstract

Coagulation using titanium potassium oxalate (K₂TiO(C₂O₄)₂) effectively removes arsenite, arsenate, and cadmium from drinking water, exceeding the performance of traditional coagulants like Fe₂(SO₄)₃ and Al₂(SO₄)₃. A 120 µmol/L K₂TiO(C₂O₄)₂ dose removes over 90% of As and Cd, even at initial concentrations ten times the maximum contaminant levels. The mechanism involves K₂TiO(C₂O₄)₂ reacting with calcium ions to form calcium oxalate, while titanium hydrolyzes to form hydrous titanium oxide. Arsenic is removed via complexation with hydrous titanium oxide, while cadmium removal involves adsorption and mixed-crystal formation with calcium oxalate. This offers a cost-effective solution for simultaneous heavy metal removal, improving drinking water safety and reducing water hardness.

Publisher

npj Clean Water

Published On

Feb 17, 2023

Authors

Juanjuan Zhou, Yanwei Liu, Bingqian Li, Huashou Li, Guikui Chen, Rongliang Qiu

Related Publications

Explore these studies to deepen your understanding of the subject.

Engineering and Technology

Highly durable and sustainable heterogeneous fabric using in-and-out fluorinated urethane coating for elimination of bacteria and oil-water separation

M. Choi, S. Park, et al.

Medicine and Health

High-throughput and simultaneous inertial separation of tumor cells and clusters from malignant effusions using spiral-contraction-expansion channels

Z. Zhu, H. Ren, et al.

Environmental Studies and Forestry

The efficacy of chlorine-based disinfectants against planktonic and biofilm bacteria for decentralised point-of-use drinking water

G. E. Clayton, R. M. S. Thorn, et al.

Environmental Studies and Forestry

Efficacy of locally-available cleaning methods in removing biofilms from taps and surfaces of household water storage containers

G. String, M. Domini, et al.

Listen, Learn & Level Up

Over 10,000 hours of research content in 25+ fields, available in 12+ languages.

No more digging through PDFs, just hit play and absorb the world's latest research in your language, on your time.

listen to research audio papers with researchbunny