Tourmaline guiding the electric field and dechlorination pathway of 2,3-dichlorophenol by Desulfitobacterium hafniense.

The dehalogenation of organohalides has been a research hotspot in bioremediation field; however, the influence of tourmaline, a natural ore that can generate spontaneous electric field, on organohalide-respiring bacteria (OHRB) and their dechlorination process is not well known. In this study, the effect and mechanism of tourmaline on the reductive dechlorination of 2,3-dichlorophenol (2,3-DCP) by Desulfitobacterium hafniense DCB-2 were explored. The characterization results confirmed that tourmaline had good stability and the optimal dosage of tourmaline was 2.

Effects of modified biochars on the shifts of short-chain fatty acid profile, iron reduction, and bacterial community in paddy soil.

Biochar is well known as an effective means for soil amendment, and modification on biochar with different methods could improve the benefits for environmental remediation. In this study, two modified biochars were generated with nitric acid (NBC) and hydrogen peroxide (OBC) pretreatment, and a control biochar was produced after washing with deionized water (WBC). The dynamics of short-chain fatty acids (SCFAs), iron concentration and bacterial community in rice paddy soil amended with different biochars or without adding biochar (CK) were studied during 70 days of anaerobic incubation.

[Enhanced Dewaterability of Waste-Activated Sludge in Presence of Fe(Ⅱ)-Activated Calcium Peroxide].

Ferrous iron-activated calcium peroxide (Fe/CaO) was innovatively put forward to improve the dewaterability of waste-activated sludge. The effects of initial pH, Fe, and CaOdosages on sludge dewatering performance were investigated and its internal mechanism for achieving deep sludge dewatering was thoroughly explored. The results indicated that the best dewatering performance was obtained by dosing 3.

A mixed ionic and electronic conducting dual-phase membrane with high oxygen permeability.

To combine good chemical stability and high oxygen permeability, a mixed ionic-electronic conducting (MIEC) 75 wt% Ce(0.85)Gd(0.1)Cu(0.

High-flux oxygen-transporting membrane Pr(0.6)Sr(0.4)Co(0.5)Fe(0.5)O(3-δ): CO2 stability and microstructure.

High oxygen permeability and good thermochemical stability of oxygen-transporting membranes (OTMs) are two main requirements concerning the applicability of these devices in chemical processes, such as CO2 capture using the oxyfuel concept or catalytic membrane reactors. In this work, a single-phase perovskite-type membrane Pr0.6Sr0.

A novel CO2-stable dual phase membrane with high oxygen permeability.

By cobalt-doping of the mixed conducting phase PSFC, a good combination of high CO2 stability and high oxygen permeability is obtained for the 60 wt% Ce(0.9)Pr(0.1)O(2-δ)-40 wt% Pr(0.

Hydrogen production by water dissociation in surface-modified BaCo(x)Fe(y)Zr(1-x-y)O(3-delta) hollow-fiber membrane reactor with improved oxygen permeation.

A porous perovskite BaCo(x)Fe(y)Zr(0.9-x-y)Pd(0.1)O(3-delta) (BCFZ-Pd) coating was deposited onto the outer surface of a BaCo(x)Fe(y)Zr(1-x-y)O(3-delta) (BCFZ) perovskite hollow-fiber membrane.

Neutral and cation-free LTA-type aluminophosphate (AlPO(4)) molecular sieve membrane with high hydrogen permselectivity.

A novel neutral and cation-free LTA-type AlPO(4) membrane has been prepared on porous asymmetric ceramic supports. Hydrogen can be effectively separated from other gases by molecular sieving.

Zeolitic imidazolate framework membrane with molecular sieving properties by microwave-assisted solvothermal synthesis.

A zeolitic imidazolate framework (ZIF-8) as member of the metal-organic framework family has been crystallized as a thin porous layer on an asymmetric ceramic support. Hydrogen can be selected from other gases by molecular sieving.

Direct decomposition of nitrous oxide to nitrogen by in situ oxygen removal with a perovskite membrane.

Direct decomposition of N(2)O to N(2) using perovskite hollow fiber membranes is achieved by combination with in situ oxygen removal (see picture). A coupled partial methane oxidation allows N(2)-free synthesis gas to be obtained. This sustainable process combines N(2)O removal with the simultaneous production of valuable chemicals.