The persistent problem of heavy metal contamination in industrial wastewater necessitates the development of highly efficient and cost-effective remediation technologies. NINGBO INNO PHARMCHEM CO.,LTD. is at the forefront of this challenge, specializing in the synthesis and application of advanced polymer sorbents. Our core focus is on styrene-acrylamide copolymers and their chemically modified counterparts, which have demonstrated remarkable capabilities in heavy metal adsorption and environmental cleanup.

Our journey begins with the synthesis of these unique polymers. Utilizing free radical emulsion polymerization, we create base styrene-acrylamide copolymers with controlled architectures. These initial materials are then subjected to grafting processes with aniline and 2-chloroaniline. This modification step is critical, as it introduces specific functional groups that significantly enhance the polymer's capacity to bind and remove pollutants. The enhanced performance of these polyacrylamide graft copolymers is a testament to the power of tailored polymer design.

The effectiveness of these materials is thoroughly evaluated through comprehensive styrene acrylamide copolymer characterization. Techniques such as Infrared (IR) spectroscopy, X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Thermogravimetric Analysis (TGA), and Brunauer–Emmett–Teller (BET) surface area analysis are employed. These methods provide a deep understanding of the polymer's structure, morphology, thermal stability, and surface properties, all of which are critical for its performance as a sorbent. The results consistently show that grafting improves surface area and introduces active sites crucial for pollutant capture.

A key aspect of our research involves understanding the thermodynamics of mercury adsorption on polymers. Our studies reveal that the adsorption process is endothermic and spontaneous, characterized by negative Gibbs free energy. This indicates that the process is thermodynamically favorable. Moreover, the adsorption behavior is well-described by the Freundlich isotherm, suggesting that the polymer surfaces can accommodate multiple layers of adsorbed mercury ions. This multi-layered adsorption capacity is a significant advantage for efficient pollutant removal.

Furthermore, the pseudo-second-order adsorption kinetics observed in our experiments signifies a strong chemical interaction between the polymer sorbent and mercury ions. This understanding of adsorption mechanisms allows us to optimize the application conditions for maximum efficiency. At NINGBO INNO PHARMCHEM CO.,LTD., we are committed to translating this scientific understanding into practical solutions for industrial wastewater treatment, offering robust and effective methods for environmental protection.