Ammonium perchlorate (AP) is a common oxidizer in composite propellants, and its combustion behavior can be tailored by micro- nano-metal oxide catalysts. pellets were manufactured with nano-titanium iron at several mass loadings (0–3%) to isolate their effects on AP. The samples burned from 3.45 34.5 MPa (500–5000 psi) constant-volume strand bomb. Microscopy characterization was completed for ...

Low-thrust long-burn-time solid rocket motors may be useful as propulsion for small, fast, uncrewed aerial vehicles. These require a slow-burning propellant that can operate at unusually low chamber pressures (0.3–2 MPa). Slow-burn propellants were developed using ammonium perchlorate oxidizer and the burn rate suppressant oxamide. By varying amount of oxamide (from 0 to 20%), rates from 4 (at ...

As part of a study to elucidate the environmental parameters that control microbial perchlorate respiration, we investigated the reduction of perchlorate by the dissimilatory perchlorate reducer Dechlorosoma suillum under a diverse set of environmental conditions. Our results demonstrated that perchlorate reduction by D. suillum only occurred under anaerobic conditions in the presence of perchl...

We have studied the ignition of liquid fuel and certain solid fuels by the photoignition of single wall carbon nanotubes (SWCNTs). Our investigation includes the effect of solid additives such as aluminum nano-particles and solid oxidizers such as ammonium perchlorate (AP) on the photoignition characteristics. We have shown that by mixing CNT with other nanoparticles and powdered material, the ...

The engineering aspects of bioreactors treating wastewaters contaminated with high explosives are better understood than the microbial communities within the reactors. Five anaerobic bioreactors treating energetics were studied to better understand bacterial compositions in each reactor system as related to influents containing various energetic materials. Studied were: three anaerobic fluidize...

Radioactive iodide ((131)I-) protection studies have focused primarily on the thyroid gland and disturbances in the hypothalamic-pituitary-thyroid axis. The objective of the current study was to establish (131)I- urinary excretion profiles for saline, and the thyroid protectants, potassium iodide (KI) and ammonium perchlorate over a 75 hour time-course. Rats were administered (131)I- and 3 hour...

Perchlorate contamination of aquifers and drinking-water supplies has led to stringent regulations in several states to reduce perchlorate concentrations in water at acceptable levels for human consumption. Several perchlorate treatment technologies exist, but there is significant cost associated with their use, and the majority of them are unable to degrade perchlorate to innocuous chloride. W...

Perchlorate (ClO4) has been detected in some states in the U.S and become an environmental concern since the late 1990’s. Perchlorate properties, contamination, and health effects were introduced in this paper. Perchlorate biodegradation degradation were introduced and summarized. According to recent studies, perchlorate respiring bacteria are present in natural environments, providing possibil...