Zinc and sulfur functionalized biochar as a peroxydisulfate activator deferred ultraviolet irradiation for tetracycline removal.

To enhance the degradation of tetracycline class (TC) residuals of high-concentration from pharmaceutical wastewater, a novel zinc (Zn) and sulfur (S) functionalized biochar (SC-Zn), as a peroxydisulfate (PDS) activator, was prepared by two-step pyrolysis using ZnSO accumulated water-hyacinth. Results showed that the removal rate of 50, 150, and 250 mg per L TC reached 100%, 99.22% and 94.

Ingenious use of autocatalytic hydrodeoxygenation for the separation and recovery of oil and iron from rolling oil sludge.

This paper introduces a transformative hydrodeoxygenation process for the simultaneous recovery of oil and iron from hazardous rolling oil sludge (ROS). Leveraging the inherent catalytic capabilities of iron/iron oxide nanoparticles in the sludge, our process enables the conversion of fatty acids and esters into hydrocarbons under conditions of 4.5 MPa, 330 °C, and 500 rpm.

The three-dimensional ordered macroporous structure of the Pt/TiO-ZrO composite enhanced its photocatalytic performance for the photodegradation and photolysis of water.

Using polystyrene (PS) spheres as a template, three-dimensional ordered macroporous Pt/TiO-ZrO (3DOM Pt/TiO-ZrO) composites were prepared by vacuum impregnation combined with photoreduction. The crystal structure, composition, morphology, optical absorption, and surface physicochemical properties of the as-synthetized samples were characterized by X-ray diffraction (XRD), UV-visible diffuse reflectance spectroscopy (UV-vis/DRS), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and N adsorption-desorption analyses. The results showed that the 3DOM Pt/TiO-ZrO composites were mainly composed of anatase TiO and tetragonal ZrO crystal phases, in which Pt mainly existed as a single species.