THE INFLUENCE OF MICRO-OXYGEN ADDITION ON DESULFURIZATION PERFORMANCE AND MICROBIAL COMMUNITIES DURING WASTE-ACTIVATED SLUDGE DIGESTION IN A RUSTY SCRAP IRON-LOADED ANAEROBIC DIGESTER

In this study, micro-oxygen was integrated into a rusty scrap iron (RSI)-loaded anaerobic digester.Under an optimal RSI dosage of 20 g/L, increasing O2 levels were added stepwise in seven stages in a semi-continuous experiment.Results showed the average methane yield was 306 mL/g COD (chemical oxygen demand), and the hydrogen sulphide (H2S) concent

Highlights The robust organic/inorganic hybrid interlayer derived from in situ formed tribofilms were fabricated by using a misbhv tank top scalable rolling method.The interlayer facilitates dendrite-free lithium metal anodes by building local de-solvation environments near the interface and inhibiting both dendrite growth and electrolytes corrosio

Nowadays, road transport is used to move various loads in agriculture, in which automatic gearboxes are used.When the vehicles are moving, elements wear out, which leads to changes in parameters of technical condition of vehicles, reduction of efficiency of gear shifting or inability to move the vehicle.The key element in a variable speed gearbox w

Fatigue cracking is one of the most common types of distress in asphalt pavements.Each asphalt concrete (AC) constituent and its interactions are relevant misbhv tank top to characterize the resistance to fatigue cracking of the ACs.Also, for the selection of materials, it is essential to consider not only the capacity of the material resist to fat