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Material Properties, Characterization, and Application of Microcellular Injection-Molded Polypropylene Reinforced with Oyster Shells for Pb (II) Adsorption Kinetics from Aqueous Solutions

Kaggle 2025
Minyuan Chien, Naveen Bunekar, Cabangani Donga, Pontsho Mbule, T. N. Moja, Shyh‐Shin Hwang

Summary

This review covers the material properties of microplastics, including size, shape, polymer composition, and surface chemistry, alongside the analytical methods used to characterize them. The paper also discusses how these physical and chemical properties influence microplastic behavior in environmental and biological research contexts. It serves as a practical reference for standardizing microplastic characterization across studies.

Microcellular injection-molded oyster shell nano-powder (OSP) with polypropylene (PP) is a potential adsorbent material that can reduce toxic metal ion contamination in groundwater. This study aims to investigate the PP/OSP composite material properties and determine the toxic metal ion adsorption properties of polypropylene/oyster shell nano-powder (PP/OSP) in an aqueous medium. This research focused on lead Pb(II) ion using different parameters such as contact time, pH value, and initial concentrations to optimize the conditions for heavy metal remediation. Characterization techniques such as XRD, SEM, FTIR, and TGA were used to analyze the surface morphology, functional groups, and thermal stability, respectively. The adsorption isotherms were conducted, and the behavior was consistent with the Langmuir and Temkin isotherms. A pseudo-first-order kinetic model was preferred, with a maximum adsorption capacity for lead removal obtained at 13,89 mg/g.

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