Hydrogen production by suspension self-rotation enhanced pyrolysis of sludge particles in cyclone.

The challenges faced by sludge pyrolysis units, including poor heat transfer efficiency and uneven heating of material groups, significantly hinder the green and low-carbon transformation and sustainable development of sludge treatment. The suspension self-rotation of sludge particles in a cyclone enhances particle heat transfer, thereby improving the pyrolysis process. In this study, we developed a novel method for sludge pyrolysis using Cyclone Suspension Self-Rotation Pyrolysis Reactor (CSSPR).

Phase Formation Mechanism and Anomalous Magnetic Variation of High-Performance La-Co-Doped Strontium Ferrites.

La-Co-doped ferrite is widely used due to its excellent magnetic properties, but the mechanisms of La-Co doping on its phase formation and magnetic properties remain unclear. This study clarifies the phase formation mechanisms and reveals that La-Co doping reduces the formation temperatures of the intermediate phase SrFeO and thus the final SrFeO phase. This promotes complete formation of SrFeO, enhancing saturation magnetization.

[Factors influencing the continued intention to use health science popularization WeChat accounts among university students in Chengdu in 2023].

Objective: Exploring factors influencing the continued use intention of health science popularization WeChat accounts among university students in Chengdu.

Methods: Stratified cluster random sampling was employed to select students from 10 universities in Chengdu in 2023 as research subjects, with data collected via a questionnaire. The questionnaire encompassed demographic information, usage patterns of health science popularization WeChat accounts, and factors influencing continued use intentions.

Hydrocyclone-induced classification reduction and spin desorption of contaminated soil remediation with heavy metal and organics.

The correlation between soil pollutant concentration and particle size in multi-component contaminated soil containing Cadmium (Cd) and Polychlorinated biphenyls (PCBs) has been investigated. The hydrocyclone classification process has been utilized to reduce the amount of contaminated soil, followed by the application of the hydrocyclone leaching process for the remediation of residual contamination. The results of the hydrocyclone classification process revealed that smaller soil particles have higher concentrations of Cd and PCBs, consistent with the findings from the soil sieving process.

High-efficiency microplastic removal in water treatment based on short flow control of hydrocyclone: Mechanism and performance.

Microplastics have been identified as a potentially emerging threat to water environment and human health. Therefore, there is a pressing demand for effective strategies to remove microplastics from water. Hydrocyclone offers a rapid separation and low energy consumption alternative but require reduction of microparticle entrainment by short flow, which limits the effectiveness for small density differentials and ultralow concentrations separation.

Association between adult food insecurity and mortality among adults aged 20-79 years with diabetes: A population-based retrospective cohort study.

Aims: There is limited research on the relationship between food insecurity and mortality among individuals with diabetes. This study aims to investigate the impact of food insecurity on all-cause and cause-specific mortality in adults with diabetes.

Research Design And Methods: This study included 5749 adults with diabetes from the National Health and Nutrition Examination Survey cycles 2003-2018 and followed up until 31 December 2019.

Efficient hydrogen production from wastewater remediation by piezoelectricity coupling advanced oxidation processes.

Efficient H harvesting from wastewater instead of pure water can minimize fresh water consumption, which is expected to solve the problem of water shortage in H production process and contribute to carbon neutrality in the environmental remediation, but the inevitable electron depletion caused by electron-consuming pollutants will result in an exhausted H evolution reaction (HER) performance. In this paper, by coupling piezocatalysis and advanced oxidation processes (AOPs) by a MoS/Fe/peroxymonosulfate (PMS) ternary system, extensive types of wastewater achieved considerable H generation, which exceeded the yield in pure water with synchronous advanced degradation of organic pollutants. In addition, profiting from the crucial bridging role of PMS, the H yield in nitrobenzene wastewater after the introduction of PMS-based AOPs increased 3.

Sludge low-temperature drying with mainly non-phase change in mere seconds based on particle high-speed self-rotation in cyclone.

Improper sludge treatment will cause serious environmental problems, and sludge drying is the key to effective treatment. Almost all the existing sludge drying technologies use heating to overcome the great latent heat of moisture vaporization, which leads to high drying energy consumption. In this study, based on the particle high-speed self-rotation in the cyclone and micro-interface oscillations, the cyclone self-rotation drying (CSRD) technology was developed.

Enhancement of PM Cyclone Separation by Droplet Capture and Particle Sorting.

Fine particulate matter (PM) is one of the most serious environmental pollutants worldwide, and efficient separation technologies are crucial to the control of PM emission from industrial sources. We developed a novel method to enhance PM cyclone separation by droplet capture and particle sorting using a vertical reverse rotation cyclone (VRR-C, inlet particle-sorting cyclone). The separation performances of common cyclone (CM-C) without droplets, CM-C with droplets, and VRR-C with droplets were compared in terms of energy consumption, overall separation efficiency, particle grade efficiency, outlet particle concentration, and outlet particle size distribution.

In-situ sludge reduction and carbon reuse in an anoxic/oxic process coupled with hydrocyclone breakage.

The long-term performance of an anoxic-oxic-hydrocyclone (AOH) process with an in-situ hydrocyclone treatment unit in the mixed liquid return line for sludge reduction and carbon reuse has been observed, in comparison with a conventional anoxic-oxic (AO) process. Three parallel side-stream systems, including one AOH system with a 25-mm hydrocyclone, one AOH system with a 35-mm hydrocyclone and one AO system, were built and fed with real wastewater for a comparative study in a wastewater treatment plant. The results demonstrate that the hydrocyclone in the AOH process was able to break macro-flocs into smaller flocs.

Application of gas cyclone-liquid jet absorption separator for purification of tail gas containing ammonia.

In this experiment, with stainless steel gas cyclone-liquid jet absorption separator as carrier, NH as experimental gas, and water and HPO solution as absorbents, corresponding NH absorption rate change is obtained through the adjustment of experimental parameters, such as NH inlet concentration, inlet velocity of mixed gas, injection flow rate of absorbent, temperature of absorbent, and HPO absorbent concentration. The NH absorption rate decreases with the increase in NH inlet concentration and inlet gas velocity. The NH absorption rate will increase first and then tends to remain unchanged after reaching a certain degree with the increase in liquid injection flow rate and absorbent concentration.

Inlet Particle-Sorting Cyclone for the Enhancement of PM Separation.

Many cities are suffering from severe air pollution from fine particulate matter. Cyclone is an effective separator for particulate pollutant but has low efficiency for those with an aerodynamic diameter of 2.5 μm or less (PM).