Zobrazeno 1 - 10
of 98
pro vyhledávání: '"Kwadwo Asare Osseo-Asare"'
Publikováno v:
Mineral Processing and Extractive Metallurgy. 131:34-43
The stability relations of cerium and its species in the hydrometallurgical processing of bastnasite were studied using Pourbaix diagrams. Different systems of Ce-(F)-(CO3)-(SO4)-(C2O4)-H2O were co...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf126f9f58b2756ae3b33d778a70e9ab
https://doi.org/10.1080/25726641.2020.1727160
https://doi.org/10.1080/25726641.2020.1727160
Publikováno v:
Minerals Engineering. 138:86-94
Double refractory gold ore was sequentially pretreated to oxidize sulfides by thermophilic archaeon Acidianus brierleyi and then to decompose carbonaceous matters using the cell-free spent medium (CFSM) from white-rot fungus Phanerochaete chrysospori
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1c46e8fc6310f3db654b18e8df05831
https://doi.org/10.1016/j.mineng.2019.04.043
https://doi.org/10.1016/j.mineng.2019.04.043
Publikováno v:
Mining, Metallurgy & Exploration. 36:227-233
The standard Gibbs free energy of formation (ΔGof, 298) of bastnasite, (Ce, La, Nd, Pr)FCO3, was estimated using four different methods. The obtained average values were − 1589.5 kJ/mol for CeFCO3, − 1599.5 kJ/mol for LaFCO3, − 1589.1 kJ/mol f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06110e430afb695b601c78faf28db2db
https://doi.org/10.1007/s42461-018-0041-7
https://doi.org/10.1007/s42461-018-0041-7
Autor:
Takeru Fukumori, Binglin Guo, Kwadwo Asare Osseo-Asare, Tsuyoshi Hirajima, Wuhui Luo, Keiko Sasaki
Publikováno v:
Applied Clay Science. 146:325-333
Montmorillonite (Mt) and illite (Ilt) were ground for different times under wet condition and sequentially subjected to organic modification by dioctadecyl dimethyl ammonium chloride (DDAC). The influence of the grinding time on the obtained products
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d9e7aa16d23356b25bd490429790b23
https://doi.org/10.1016/j.clay.2017.06.025
https://doi.org/10.1016/j.clay.2017.06.025
Publikováno v:
Solid State Phenomena. 262:43-47
The bio-treatment of double refractory gold ores (DRGO) to reduce preg-robbing needs to account for the heterogeneity of the ore so as to acquire a much more complete picture of the system. To this end, the effects of ferrous ion additives on the deg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5925b489e1d79a34736f0b66546eba00
https://doi.org/10.4028/www.scientific.net/ssp.262.43
https://doi.org/10.4028/www.scientific.net/ssp.262.43
Publikováno v:
Hydrometallurgy. 168:76-83
Carbonaceous matter in refractory gold ore is known to be one of the primary causes of gold recovery loss. Model experiments were conducted to simulate the bio-modification of carbonaceous matter using powdered activated carbon (PAC) as a surrogate a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6ab69f9d53370956c9115d8c3e0b6ce
https://doi.org/10.1016/j.hydromet.2016.08.003
https://doi.org/10.1016/j.hydromet.2016.08.003
Autor:
Kwadwo Asare Osseo-Asare, Xinhong Qiu, Keiko Ideta, Keiko Sasaki, Tsuyoshi Hirajima, Jin Miyawaki
Publikováno v:
Journal of Colloid and Interface Science. 445:183-194
LDHs with different divalent metals (Zn-LDH, Mg-LDH and Ca-LDH) have been synthesized and produced calcined LDHs (Zn-CLDH, Mg-CLDH and Ca-CLDH) for borate removal. Based on XRD, SEM, BET, (27)Al NMR, CO2-TPD, and (11)B NMR, detailed characterization
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::718410b7eb8e28c66fe65ca395579fa2
https://doi.org/10.1016/j.jcis.2014.12.093
https://doi.org/10.1016/j.jcis.2014.12.093
Publikováno v:
International Biodeterioration & Biodegradation. 143:104735
Sulfides and carbonaceous matter in double refractory gold ore (DRGO) were bio-treated sequentially using an iron-oxidizing archaeon Acidianus brierleyi followed by lignin peroxidase-dominating crude enzymes released from the white-rot fungus Phanero
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc463862ef40e167090e528c0a4952a2
https://doi.org/10.1016/j.ibiod.2019.104735
https://doi.org/10.1016/j.ibiod.2019.104735
Publikováno v:
Advanced Materials Research. 825:427-430
The fungus Phanerochaete chrysosporium has been proven to biotransform refractory gold ores, leading to increase in gold recovery. This transformation has been attributed to enzymes secreted by the microbe. This paper reports the findings of prelimin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c868622fbc32450ee2252224db797b7
https://doi.org/10.4028/www.scientific.net/amr.825.427
https://doi.org/10.4028/www.scientific.net/amr.825.427
Publikováno v:
Hydrometallurgy. 137:38-44
Double refractory gold ores (DRGO) contain organic carbonaceous matter (CM) and sulfide minerals, and thus require pretreatment before cyanidation for gold extraction. Though there have been several studies into microbial pretreatment of DRGO, availa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51fa85550ca4b8e0f9c20b15be6d10a0
https://doi.org/10.1016/j.hydromet.2013.05.003
https://doi.org/10.1016/j.hydromet.2013.05.003