scholarly journals Synthesis and properties of metal-carbon nanocomposites Ni/C, Co/C AND Cu/C with high metal content

Surface ◽  
2017 ◽  
Vol 9(24) ◽  
pp. 136-144 ◽  
Author(s):  
V. M. Bogatyrov ◽  
◽  
M. V. Borysenko ◽  
O. I. Oranska ◽  
M. V. Galaburda ◽  
...  
Keyword(s):  
Metal Content ◽  
Carbon Nanocomposites ◽  
High Metal Content ◽  
High Metal

Demetallization of Heavy Oils of High Metal Content through Pyrolysis under Supercritical Water Environment

2020 ◽  
Vol 34 (3) ◽  
pp. 2861-2869 ◽  
Author(s):  
Xu-Quan Tang ◽  
Jing-Cao Pu ◽  
Hong-Bing Zheng ◽  
Xu-De Yu ◽  
Xue-Feng Chen ◽  
...  
Keyword(s):  
Supercritical Water ◽  
Metal Content ◽  
Water Environment ◽  
Heavy Oils ◽  
High Metal Content ◽  
High Metal

Preparation of high metal content nanoporous carbon

2013 ◽  
Vol 115 ◽  
pp. 115-121 ◽  
Author(s):  
Miguel Molina-Sabio ◽  
Mateus Carvalho Monteiro de Castro ◽  
Manuel Martinez-Escandell ◽  
Francisco Rodríguez-Reinoso
Keyword(s):  
Metal Content ◽  
Nanoporous Carbon ◽  
High Metal Content ◽  
High Metal

Sea sediments contaminated with heavy metals: metal speciation and removal

1995 ◽  
Vol 32 (9-10) ◽  
pp. 65-73 ◽  
Author(s):  
C. Savvides ◽  
A. Papadopoulos ◽  
K. J. Haralambous ◽  
M. Loizidou
Keyword(s):  
Heavy Metals ◽  
Industrial Waste ◽  
Metal Content ◽  
Metal Speciation ◽  
Acid Solutions ◽  
Significant Percentage ◽  
High Metal Content ◽  
Residual Phase ◽  
High Metal ◽  
Partitioning Procedure

The contamination of sediments with heavy metals may lead to serious environmental problems and in some cases action has to take place for their decontamination. In this work, studies were performed on sediments near the outfall of domestic and industrial waste. The metals examined were Cu, Cr, Ni, Pb, Zn and Fe. Indeed, high metal content was found in the sediments and the contamination factors were quite high, indicating the effect of the nearby discharge of effluents. The results of the application of a sequential extraction partitioning procedure indicated that an important part of the metal content is carried by the residual phase but also a significant percentage is found in the organic and reducible fractions, i.e. in potentially available fractions. Batch extraction experiments using acid solutions of various concentrations and different acid-sediment contact times were performed in order to remove heavy metals from the sediments. For most metals studied, a satisfactory percentage was extracted at low contact times.

scholarly journals High Metal Content of Highly Accreting Quasars

2021 ◽  
Vol 910 (2) ◽  
pp. 115
Author(s):  
Marzena Śniegowska ◽  
Paola Marziani ◽  
Bożena Czerny ◽  
Swayamtrupta Panda ◽  
Mary Loli Martínez-Aldama ◽  
...  
Keyword(s):  
Metal Content ◽  
High Metal Content ◽  
High Metal

scholarly journals On the Derivation of Abundances by Means of Features in the Sequences of the old Open Star Clusters

1976 ◽  
Vol 72 ◽  
pp. 97-99
Author(s):  
A. Maeder
Keyword(s):  
Metal Content ◽  
Main Sequence ◽  
Star Clusters ◽  
Open Star Clusters ◽  
Open Star ◽  
High Metal Content ◽  
High Metal ◽  
Magnitude Diagram ◽  
Homogeneous Models ◽  
Systematic Effects

Stellar evolution near the main-sequence is still subject to many discussions. In addition to the case of the cluster M 67 (Racine, 1971), quite systematic differences have been encountered during the comparison of theoretical isochrones and observed sequences in the colour-magnitude diagram of the old open star clusters (Maeder, 1974). In the case of M 67 and NGC 188, many attempts to discuss the characteristics of their sequences (such as the gap corresponding to the hydrogen-exhaustion phase) in terms of chemical composition have been made (e.g. Aizenman et al., 1969; Demarque and Schlesinger, 1969; Demarque and Heasley, 1971; Torres-Peimbert, 1971; Hejlesen et al., 1972; Caloi et al., 1974); some of these works have suggested to explain the gap parameters by a high metal content. Attemps to explain the differences between models and observations by means of simplified models with overshooting from convective cores have also been made (Maeder, 1973; Prather and Demarque, 1974). Let us also note that it has been shown that it is unlikely that the anomalies found are due to systematic effects, like the interstellar reddening, binarity, rotation or effects in calibrations or composition of the initial homogeneous models.

Environmental application of an industrial waste as catalyst for the electro-Fenton-like treatment of organic pollutants

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14416-14424 ◽  
Author(s):  
Elena Alfaya ◽  
Olalla Iglesias ◽  
Marta Pazos ◽  
Maria Angeles Sanromán
Keyword(s):  
Acid Mine Drainage ◽  
Organic Pollutants ◽  
Industrial Waste ◽  
Metal Content ◽  
Mine Drainage ◽  
Environmental Application ◽  
Acid Mine ◽  
High Metal Content ◽  
High Metal

The application of acid mine drainage sludge (AMDS), an industrial waste with high metal content, as catalyst for the electro-Fenton-like technology on the treatment of organic polluted effluents has been investigated.

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