Abstract Safe water reuse usually means the provision of reclaimed with its quality meeting criteria for safeguarding human health and aquatic ecology. Regarding this, people often overstress technological magic in terms hazardous substances removal by engineered processes while ignoring utilization nature's power to provide an additional barrier safety control. Based on understanding function ...

The aim of this study is to find the optimal water pressure and percentage of supply vapour in the feed water heaters (fwhs) of steam power plants, such that they maximize the thermal efficiency of the Rankine cycle within pre-specified values of minimum and maximum pressures of the thermodynamic cycle. Thermal efficiency is defined as a function of unknown variables (fluid pressure and vap...

I. Determination of unanalyzed ions in rain water of Mongolia

Thermochemical cycles that split water into stoichiometric amounts of hydrogen and oxygen below 1,000 °C, and do not involve toxic or corrosive intermediates, are highly desirable because they can convert heat into chemical energy in the form of hydrogen. We report a manganese-based thermochemical cycle with a highest operating temperature of 850 °C that is completely recyclable and does not in...

abstract heavy metals are the most important components of environment pollution. soil contaminated by industrial and mining activities of these elements into the soil-plant-human cycle and accumulate in the human or animal body tissue to reach the levels of toxic for animals and humans. for this purpose, a broad sampling of soil, plant and sheep liver were taken and the amount of pb were teste...

Waste heat recovery using an (organic) Rankine cycle is important and promising technology for improving engine efficiency thereby reducing the CO2 emissions due to heavy-duty transport. Experiments were performed a with water waste from exhaust gases of Diesel engine. The experimental results used calibrate validate steady-state models main components in cycle: pump, pump bypass valve, evapora...

abstract the goal of this research is simulating an optimum reactor to eliminate greenhouse gases, mainly co2, through combined cycle in stacks of power plant, using a strong base (sodium hydroxide) thinned by water. during this process sodium bicarbonate salt is generated together with water and the produced salty water is desalinated and its useful salts are also extracted. four scenarios hav...

We present the construction of a dynamic area fraction model (DAFM), representing a new class of models for an earth-like planet. The model presented here has no spatial dimensions, but contains coupled parameterizations for all the major components of the hydrological cycle involving liquid, solid and vapor phases. We investigate the nature of feedback processes with this model in regulating E...