The application portfolio empowerment method and ELECTRE-I for optimising the control of ammonia release during the aerobic fermentation process.

Aerobic fermentation composting can transform solid organic waste into biological organic fertiliser, while reducing resource wastage and ecological damage. However, in the composting process, a serious loss of nitrogen occurs, primarily in the form of the release of ammonia gas. The release of ammonia gas not only pollutes the environment, but also diminishes the presence of nutrient elements, resulting in compost products that are lower in quality.

Effect of fipronil on biogas production performance during anaerobic digestion of chicken manure and corn straw.

Fipronil is a broad-spectrum insecticide that has a good control effect on pests of commercial poultry. Although many studies have reported the environmental fate of fipronil, the influence of residual fipronil in poultry waste on biogas production has not been further explored yet. In this article, an experimental comparative study on anaerobic digestion (AD) of chicken manure (CM) and corn straw (CS) with different fipronil concentrations (FCs) was carried at 8% of total solid (TS) and mid-temperature (35 ± 1)°C.

Atomic oxygen effects on silvered polyimide films and their surface modification by poly(siloxane amic acid) ammonium salts.

The tolerance of silvered polyimide films synthesized by an self-metalization method against atomic oxygen (AO) was evaluated. The results showed that the mass loss of R-Ag/PI was markedly increased as the AO fluence increased; Ag/PI showed an identical trend. SEM data showed that the silver particles on the surfaces of R-Ag/PI and Ag/PI disappeared.