Organic matter steadily accumulates in eutrophic lakes as a result of deposition of detrital tissue from algae and aquatic macrophytes and the slow rate of anaerobic decomposition. The rate of organic matter decomposition is affected by the nature of the sediment C (electron donor) and supply of electron acceptors. Batch incubation experiments were conducted to determine the rate and extent of ...

Partial nitritation-anammox (PN/A) process will substantially reduce the costs for removal of nitrogen in mainstream municipal sewage. However, one PN/A challenges is to time necessary adaptation anammox bacteria lower temperatures mild climates. In this study, we exposed flocculent culture cold shocks [35°C ? 5°C (8 h) 15°C] and evaluated long-term shock response. Over a post-shock period 40 d...

The nitrous oxides emission was measured over 7 months in the full-scale aerobic granular sludge plant Dinxperlo, Netherlands. Nitrous oxide concentrations were bulk liquid and off-gas of Nereda® reactor. Combined with batch wise operation reactor, this gave a high information density better insight into N2O general. average factor 0.33% based on total nitrogen concentration influent. yearly es...

As an ornamental plant, Fatsia japonica has been widely used in gardens. From April 2021 to 2022, a disease that caused the wilting and root rot of F. large area was observed, which eventually led plants dying, while leaves did not fall off. This greatly reduced landscape effect plants. An oomycete species isolated from roots infected colony morphology slightly radial stellate, aerial mycelium ...

The present work investigated the effects of ultrasound on hydrogen-bond strength, secondary and network structures, granule size microstructures gluten, glutenin gliadin, in order to explicate possible mechanisms ultrasound-assisted dough processing. results showed that weakened intermolecular strength protein. After sonication, contents ?-turns ?-sheets decreased increased, respectively, whic...

The use of stormwater for managed aquifer recharge (MAR) has become one the most important ways to deal with water shortages and corresponding environmental geological problems, especially in north China. Fe (III) clogging porous media is a common significant problem that influences effect infiltration rate. This paper focuses on migration characteristics mechanisms iron hydroxides sand columns...

The current study focused on the particulate matter emissions of polyoxymethylene dimethyl ethers (PODE)/diesel blends with PODE blending ratios 0, 10%, 20% and 30% have been experimentally investigated in a common-rail engine. influences ratio smoke emission, particle size distribution oxidation characteristic are discussed. Results show that addition diesel fuel can effectively reduce emissio...