Membrane and Water Treatment

Volume 15, Number 3, 2024, pages 107-115

DOI: 10.12989/mwt.2024.15.3.107

Thermal based adsorption of daily food waste with the test of AI grey calculations

ZY Chen, Huakun Wu, Yahui Meng, ZY Gu and Timothy Chen

Abstract

This study proposes the recycling of MVS as a value-added product for the removal of phosphate from aqueous solutions. By comparing the phosphate adsorption capacity of each calcined adsorbent at each temperature of MVS, it was determined that the optimal heat treatment temperature of MVS to improve the phosphate adsorption capacity was 800 °C. MVS-800 suggests an adsorption mechanism through calcium phosphate precipitation. Subsequent kinetic studies with MVS-800 showed that the PFO model was more appropriate than the PSO model. In the equilibrium adsorption experiment, through the analysis of Langmuir and Freundlich models, Langmuir can provide a more appropriate explanation for the phosphate adsorption of MVS-800. This means that the adsorption of phosphate by MVS-800 is uniform over all surfaces and the adsorption consists of a single layer. Thermodynamic analysis of thermally activated MVS-800 shows that phosphate adsorption is an endothermic and involuntary reaction. MVS-800 has the highest phosphate adsorption capacity under low pH conditions. The presence of anions in phosphate adsorption reduces the phosphate adsorption capacity of MVS-800 in the order of CO 3 2-, SO 4 2-, NO 3- and Cl-. Based on experimental data to date, MVS-800 is an environmentally friendly adsorbent for recycling waste resources and is considered to be an adsorbent with high adsorption capacity for removing phosphates from aqueous solutions. This paper combines the advantages of gray predictor and AI fuzzy. The gray predictor can be used to predict whether the bear point exceeds the allowable deviation range, and then perform appropriate control corrections to accelerate the bear point to return to the boundary layer and achieve.

Key Words

adsorption; AI fuzzy grey; algorithmic calculations; calcination; thermal activation

Address

ZY Chen, Yahui Meng and ZY Gu: Guangdong University of Petrochem Technol, Sch Sci, Maoming, Guangdong, China Huakun Wu: School of Computer Science, Guangdong Polytechnic Normal University, Guangzhou, Guangdong, China Timothy Chen: Division of Eng App Sci, Caltech, CA 91125, U.S.A.