Nitrogen (N) and phosphorus (P) concentrations are elevated in many freshwater systems, stimulating breakdown rates of terrestrially derived plant litter; however, the relative importance of N and P in driving litter breakdown via microbial and detritivore processing are not fully understood. Here, we determined breakdown rates of two litter species, Acer rubrum (maple) and Rhododendron maximum...

This article presents the device and principle of operation forage grain crushers that use centrifugal force inertia to supply working bodies—which occurs as a result rotation rotor with vertical axis. The results some tests machines on this have been characterized. Attention is drawn disadvantages most research works, namely lack premises for creating shredders class wide range performance. ai...

Automobile shredder residue (ASR) was pretreated to improve its quality for fuel utilization. Composition analysis revealed that ASR components could be classified into four groups: (1) urethane and textile-light fraction and combustibles containing low levels of ash and Cl; (2) plastics and rubber-light or heavy fraction and combustibles containing high levels of Cl; (3) metals and electrical ...

The general aim of this study is the valorisation of Automotive Shredder Residue (ASR) via pyrolysis. Tar, the condensable gases obtained in the pyrolysis process, is an interesting alternative fuel. Thus, the pyrolysis process was investigated in order to maximize the tar yield. The design of experiment approach was used to plan a series of experiments and to identify which operating variables...

This study aims to develop a fish grater machine produce shredded on household scale. The development of this shredder considers getting the maximum capacity, minimum percentage losses, samples with short grade and middle size, rough size limited sources specified power. method used in research is manufacturing testing approach. Three types teeth (K-type, P-type, B-type) are main focus optimize...