Adsorption with activated carbon (AC) is an important method for the treatment of heavy metal wastewater, but there are still certain challenges in the separation and reuse of activated carbon. The preparation of magnetic activated carbon (MAC) by modifying AC is one of the effective means to realize the separation of AC from solution after the adsorption process. In this work, lignite and poplar leaves were used as raw materials for co-pyrolysis, and the co-pyrolysis char was activated and modified to prepare MAC. The structure and properties were characterized by VSM, N2 adsorption, SEM,

Organic dye rhodamine B is one of the common organic pollutants in the water and soil environment. This study investigated the feasibility of removing rhodamine B from an aqueous solution through adsorption by kaolin, kaolin-sodium bentonite, and kaolin-organic bentonite. Batch adsorption test results showed that the maximum adsorption quantities of kaolin, kaolin-sodium bentonite, and kaolin-organic bentonite were 7.76 mg/g, 11.26 mg/g, and 12.68 mg/g, respectively, implying that the addition of bentonite to kaolin can effectively improve its adsorption capacity for rhodamine B. Moreover,

There is a high treatment cost and secondary pollution to the environment due to the high organic content and complex composition in landfill leachate sludge in refuse incineration power plants. Landfill leachate sludge-derived biochar (LLSDB) was prepared via pyrolysis in order to realize its resource utilization and remove pollutants from wastewater. The study focused on the removal of nutrients phosphorus and heavy metals (Cd(II) and Pb(II)) from wastewater through the adsorption process using LLSDB. The investigation also looked into the kinetics and thermodynamics of the adsorption pro

With stems and leaves of Alpinia officinarum as raw material, flavonoids were extracted from stems and leaves of Alpinia officinarum by ethanol, the adsorption of flavonoids by the eight macroporous resins on the stems and leaves of Alpinia officinarum was studied by static adsorption and desorption experiments, and adsorption isotherms, adsorption thermodynamics and kinetic characteristics of the best resin on the total flavonoids of Alpinia officinarum were also studied. The results showed that AB-8 resin had the best adsorption effect on flavonoids. The adsorption thermodynamic parameter

Radiant refrigeration is a zero-energy cooling technology with broad application prospects. However, most of the existing radiant refrigeration technologies Visible light transmission factors are not considered and cannot be applied to scenarios such as lighting buildings and photovoltaic cells. Based on the principle of spectral radiation control of beetle cutin, a method of using the refractive index difference of multi-layer films to achieve spectral radiation control is proposed to screen low-cost ITO and SiO2 , PDMS, etc. were used as base materials to construct an efficient and low-co