effective methodologies for efficient preparation of semicarbazones from aldehydes or ketones via milling and the subsequent regeneration of the parent carbonyls by gaseous nitrogen dioxide are described under solid-solid and gas-solid reaction conditions, respectively. these methods are fast, simple and environmentally benign which do not require the use of any auxiliaries such as catalysts or...

The paper considers one of possible options for the waste-free processing dumped masses nickel slags, accumulated over years operation some enterprises. This process includes use hydroand pyrometallurgical processing, which results in three products: iron sulfate, ferrosilicon with a small admixture aluminum, and slag from smelting. has hardness 7-7.5 Mohs can be used as an abrasive powder sand...

We analyze food-item level data collected from 50 adults from the United States using the Remote Food Photography Method® to provide the first estimates of plate waste gathered from adults across multiple consecutive meals and days in free-living conditions, and during laboratory-based meals with fixed food items and quantities. We find average plate waste in free-living conditions is 5.6 grams...

Many previous efforts focus on improving the utlization of data centers. We argue that even highly utilized systems can still waste the resource because of failures and maintenance. Therefore, in this position paper, we call on a new direction of research on waste-free computing. We start with a workable definition of efficiency, then introduce a new efficiency metric called usage efficiency, s...

Waste oil is an inexpensive source for biodiesel production, but the high amount of impurities present (free fatty acids, oxidation products) impedes its practical application. The aim of this work is to assess the purification efficiency of the adsorption process with eggshell and its active carbon. Carbonization of eggshell was done at 200 ºC for 4 hours. For activation of the resultant carbo...

Abstract A standard way to move particles in a sequential Monte Carlo (SMC) sampler is apply several steps of Markov chain (MCMC) kernel. Unfortunately, it not clear how many need be performed for optimal performance. In addition, the output intermediate are discarded and thus wasted somehow. We propose new, waste-free SMC algorithm which uses outputs all these MCMC as particles. establish that...

introduction Tannery waste management is a serious problem for tanning and leather industry facilities. Those branches generate large quantities of waste, consume substantial amounts of energy and in the general opinion are considered „air polluters”. The methods of tannery waste management applied thus far are insufficient, thus considerable portions of such waste are stored on landfills. The ...

Feedlot waste contains essentially all the necessary nutrients for batch fermentation with the fungus Trichoderma viride. The organism utilizes two-thirds of the carbohydrate in feedlot waste while elaborating cellulase in quantities comparable to commercial preparations. Essentially odor-free, the fermented waste contains all of the original nitrogen but has 24% less organic matter.

Abstract: The Thermoselect process is a completely new solid waste treatment process which achieves pollution-free recycling of municipal solid waste and industrial waste by a high temperature gasification and reforming process. The process effectively recovers fuel gas from waste and recycles metal and other byproducts as resources. A stable gas engine power generation system using purified sy...

one experiment was conducted in order to evaluate four levels of macaroni waste including: 0, 10, 20 and 30 percentage in growing turkey feed in a completely randomized design (crd) with 120 local turkey including 3 replicates in 12 pens. during the experiment (3-8 weeks), turkeys received feed and water of free access. weight gain, feed consumption and feed efficiency were measured weekly. dif...