Regulation of mitochondrial network architecture and function in mesenchymal stem cells by micropatterned surfaces.

Mitochondrial network architecture, which is closely related to mitochondrial function, is mechanically sensitive and regulated by multiple stimuli. However, the effects of microtopographic cues on mitochondria remain poorly defined. Herein, polycaprolactone (PCL) surfaces were used as models to investigate how micropatterns regulate mitochondrial network architecture and function in rat adipose-derived stem cells (rASCs).

Nitrogen-containing wastewater fuel cells for total nitrogen removal and energy recovery based on Cl•/ClO• oxidation of ammonia nitrogen.

The excess nitrogen discharge into water bodies has resulted in extensive water pollution and human health risks, which has become a critical global issue. Moreover, nitrogenous wastewater contains considerable chemical energy contributed by organic pollutants and nitrogenous compounds. Therefore, the treatment of various kinds of nitrogen-containing wastewater for nitrogen removal and energy recovery is of significance.

Efficient ammonia removal and toxic chlorate control by using BiVO/WO heterojunction photoanode in a self-driven PEC-chlorine system.

The efficient removal of ammonia is a difficult issue in wastewater treatment because ammonia is easily converted to nitrate instead of N. The oxidation of ammonia by chlorine radical (Cl) is recognized as an effective method. However, the massive generation of toxic byproducts chlorate and nitrate pose great risk for its practical application due to the excessive oxidation capacity of hydroxyl radical.

Efficient SO Removal and Highly Synergistic HO Production Based on a Novel Dual-Function Photoelectrocatalytic System.

The direct conversion of SO to SO is rather difficult for flue gas desulfurization due to its inert dynamic with high reaction activation energy, and the absorption by wet limestone-gypsum also needs the forced oxidation of O to oxidize sulfite to sulfate, which is necessary for additional aeration. Here, we propose a method to remove SO with highly synergistic HO production based on a novel dual-function photoelectrocatalytic (PEC) system in which the jointed spontaneous reaction of desulfurization and HO production was integrated instead of nonspontaneous reaction of O to HO. SO was absorbed by alkali liquor then oxidized quickly into SO by a nanorod α-FeO photoanode, which possessed high alkali corrosion resistance and electron transport properties.

Novel 3D Pd-Cu(OH)/CF cathode for rapid reduction of nitrate-N and simultaneous total nitrogen removal from wastewater.

Removal of NO is a challenging problem in wastewater treatment. Electrocatalysis shows a great potential to remove NO but selectively converting NO to N is facing a low efficiency. Here, a novel 3D Pd-Cu(OH)/CF cathode based electrocatalytic (EC) system was proposed that can rapidly and selectively convert NO to NH, and further convert to N simultaneously.

Comparative study on nitrogen removal and functional genes response between surface flow constructed wetland and floating treatment wetland planted with Iris pseudacorus.

Excessive nitrogen accumulated from wastewater with low C/N ratio is a new threat to water ecosystem. In this study, surface flow constructed wetland (SFCW) and floating treatment wetland (FTW) planted with Iris pseudacorus were set in parallel for nitrogen removal. The nitrogen removal efficiencies and pathways, as well as the abundance and functional diversities of the microbial community, were investigated.