Because the strength of GAC decreases with the increase of impregnation ratio, and the decrease range is large, so the preparation of GAC with compound activator is proposed.
The results show that the composite activator can reduce the impregnation ratio of phosphoric acid to wood chips and improve the strength of granular activated carbon.
At the same time, the composite activator can improve the adsorption performance of GAC.
Therefore, granular activated carbon with good adsorption performance and high strength can be prepared by this method.The Freundlich adsorption isotherm of methylene blue adsorption by activated carbon was expressed as: logQE =log59.293+ 0.42logc.
The kinetic data are consistent with the quasi-second-order kinetic model, which can more accurately describe the adsorption process of methylene blue on activated carbon.
The prepared activated carbon can effectively adsorb and remove methylene blue solution in different concentration range in aqueous solutionThe touch screen is used to realize the human-computer interaction function, and the monitoring system is established to monitor the process parameters such as temperature and pressure in real time. The functions of setting formula, alarm and curve recording are set up to meet the monitoring situation of the production site.Deep desulfurization of transportation fuels is receiving increasing attention in theresearch community worldwide due to increasingly stringent regulations and fuelspecifications in many countries for environmental protection purpose. The traditionalhydrodesulfurization process (HDS) is highly efficient in removing thiols and sulfides, but itis less effective for thiophenes and thiophene derivatives. Ultra-deep desulfurization isbecoming even more formidable challenge for HDS with the decreasing lower sulfur in fuels.Therefore, non-hydrodesulfurization technique of liquid fuels has caused intensive concernsfor ultra-deep desulfurization. Recently, the adsorption desulfurization technique and catalyticoxidation-adsorption desulfurization technique have drawn much attention at home andabroad due to its mild reaction condition,low production cost and little environmentalpollutioz. This thesis focuses on the researches of application of activated carbon fiber inadsorption and oxidation-adsorption removal of thiophenic sulfur compounds from oils. | 
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