研究目的
To develop and characterize a hybrid material (BBS-SBA) by immobilizing bio-based substances from green compost on SBA-15 silica, and to evaluate its adsorptive and photosensitizing properties for the removal of organic dyes and inorganic ions from aqueous solutions, contributing to sustainable wastewater treatment.
研究成果
BBS-SBA is a stable hybrid material with effective adsorptive and photosensitizing properties for removing organic dyes and inorganic ions from water. It shows promise for wastewater treatment, with good performance in complex matrices like landfill leachate, but requires further optimization and study for practical applications.
研究不足
The study is limited to laboratory-scale experiments; scalability to industrial applications is not addressed. The material's performance in real wastewater with complex matrices may vary, and long-term stability and reusability need further investigation. The mechanism of adsorption and photodegradation for some ions and dyes is not fully elucidated.
1：Experimental Design and Method Selection:
The study involved synthesizing BBS-SBA by immobilizing BBS-GC on SBA-15 silica, followed by characterization using various techniques to assess surface properties, and testing adsorption and photodegradation of organic dyes and inorganic ions under controlled conditions.
2：Sample Selection and Data Sources:
BBS-GC was extracted from urban biowastes (green compost), and SBA-15 silica was synthesized. Dyes (Orange II and Rhodamine B) and inorganic ions (Al, Ni, Mn, As, Hg, Cr) were used as model pollutants. Data were collected from laboratory experiments.
3：List of Experimental Equipment and Materials:
Equipment included adsorption microcalorimeter, Zetasizer, gas-volumetric apparatus for N2 adsorption, HPLC, UV-visible spectrophotometer, EPR spectrometer, ICP-OES, Solarbox for irradiation. Materials included SBA-15, BBS-GC, dyes, inorganic ions, solvents like acetonitrile, and spin traps like DMPO.
4：Experimental Procedures and Operational Workflow:
Synthesis of BBS-SBA involved functionalization steps. Characterization included zeta-potential, N2 adsorption, microcalorimetry. Adsorption tests were done in dark and under simulated solar light, with samples filtered and analyzed by UV-Vis, HPLC, or ICP-OES. EPR was used to detect radicals.
5：Data Analysis Methods:
Data were analyzed using BET method for surface area, DFT for pore size, and statistical analysis of concentration changes over time. Software included HSM for HPLC and instrument-specific software for other measurements.
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