The thermal conductivity was 0.82 W m⁻¹ K⁻¹ for 7.2% AgNPs in PEG/diatomite, which enhanced by 127% compared to PEG/diatomite.

Pyrolysis is an emerging technology for the disposal of huge amounts sewage sludge. However, thermochemical decomposition mechanism organic compounds in sludge still unclear. We adopt a novel online TG-FTIR-MS to investigate pyrolysis The samples were pyrolyzed from 150 800 °C with heating rates 10, 50, and 200 K min–1. found first time that rate can significantly change species liquid produced, but cannot gaseous produced under same conditions. contents gas compounds, most which at 293–383...

Abstract Radial mesoporous silica (RMS) sphere was tailor-made for further applications in producing shape-stabilized composite phase change materials (ss-CPCMs) through a facile self-assembly process using CTAB as the main template and TEOS SiO 2 precursor. Novel ss-CPCMs composed of polyethylene glycol (PEG) RMS were prepared vacuum impregnating method. Various techniques employed to characterize structural thermal properties ss-CPCMs. The DSC results indicated that PEG/RMS ss-CPCM...

The utilization of phosphorus (P) in activated sludge discharged from wastewater treatment plants is an important part the global circulation. Thermal excess would become a promising method for their disposal throughout world. Herein, we investigated transformation and migration P sewage during different thermal conditions. results indicate that temperature can significantly influence species content char or ash (SSC/A), while atmosphere has slight effect on fate P. 31P NMR XRD analysis...

Abstract The Beijing‐Tianjin‐Hebei (BTH) region experiences frequent heavy haze pollution in fall and winter. Pollution was often exacerbated by unfavorable atmospheric boundary layer (BL) conditions. topography this impacts the BL processes complex ways. Such implications on air quality are not yet clearly understood. all four seasons BTH thus investigated study using idealized simulations with WRF‐Chem model. Results suggest that seasonal variation of thermal conditions synoptic patterns...

We report herein the integration of pore confinement and hydrogen-bond influence on crystallization behavior C18 PCMs PCM in mesoporous silica. Mesoporous silica nanoparticles with 2.74 nm pores are employed as supporting material. To evaluate effect internal/external surfaces PCM, three kinds various functional terminals including stearic acid (SA), octodecane (OCC), octadecanol (OCO) were employed, effects mass fractions comprehensively investigated well. It is remarkable that complete...

Abstract In this study, the presummer diurnal cycle of rainfall (DCR) over southern China is examined using merged 0.1°-resolution gridded hourly rain gauge and satellite dataset National Centers for Environmental Prediction Final Global Analysis during April to June 2008–2015. Results show pronounced variations in amount, frequency, intensity China, with substantially different amplitudes from southwestern southeastern pre- postmonsoon-onset period. Southwestern often encounters significant...

Abstract A series of novel composite phase change materials (PCMs) were tailored by blending PEG and five kinds diatomite via a vacuum impregnation method. To enlarge its pore size specific surface area, different modification approaches including calcination, acid treatment, alkali leaching nano-silica decoration on the microstructure outlined. Among them, 8 min 5 wt% NaOH dissolution at 70 °C has been proven to be most effective facile. While melted during transformation, maximum load...

More attention has been given to studies on the synchronous enhancement of light-to-thermal conversion capacity and thermal conductivity polymer phase-change material (PCM) conserve solar energy. Here, commonly used PEG PCM was encapsulated by graphene nanoplatelets (GNPs) single-walled carbon nanotubes (SWCNs), while composites were simultaneously obtained. The 3D interconnected SWCNs GNPs equipped with (1) shape stability durability, (2) negligible change in energy storage density, (3)...

The work involves the fabrication, characterization, and thermal properties of polyethylene glycol (PEG)/diatomite powder (DP), which can be used as a novel shape‐stabilized composite phase change material (CPCM). maximum load PEG in DP reach 55% while melts during solid–liquid transformation. Differential scanning calorimeter results indicated that melting temperature new CPCMs could adjusted from 34 to 59°C solidifying 27 44°C. Corresponding latent heats processes were 77.27–106.5 J/g...

Abstract Particulate organic matter (POM) is distributed worldwide in high abundance. Although insoluble, it could serve as a redox mediator for microbial reductive dehalogenation and mineral transformation. Quantitative information on the role of POM natural occurrence silver nanoparticles (AgNPs) lacking, but needed to re-evaluate sources AgNPs soils, which are commonly considered derive from anthropogenic inputs. Here we demonstrate that reduces ions under solar irradiation, by producing...