Abstract: In situ capping is one of the most recent alternatives to isolate and stabilize contaminated sediments from benthic environment. Phosphorus load control material is the key factor to determine the effect of in situ capping. We present a comprehensive review on recent advances in the development and utilization of phosphorus load control materials in aspects of classification, modification, characterization, and performance evaluation. Moreover, we also put forward some suggestions for future research on phosphorus load control material based on function optimization, efficiency promotion and engineering applications for researches on new efficient multipurpose reusable sediment-water interface phosphorus load control materials.

Key words: capping material, phosphorus load, sediment-water interface, in-situ remediation, modification