Results 41 to 50 of about 3,405 (219)

A Review of the Unintended Consequences of Biochar in Various Applications

Advanced Energy and Sustainability Research, Volume 7, Issue 5, May 2026.
Biochar is widely promoted as a sustainable material for applications ranging from soil amendment to energy storage and construction materials. This review critically examines the often‐overlooked and unintended consequences of biochar, including variability in properties, safety risks, and performance limitations.
Singaravelu Vivekanandhan, Elif Kaynak, Dong Wang, Vigneshwaran Shanmugam, Aurelio Bifulco, Julio Diarte Almada, Imelda Saran Piri, Zhengyang Wang, Lokesh P. Padhye, Nam Kyeun Kim, Michael Försth, Jaime Gonzalez‐Libreros, Igor Wachter, Sabrina Karim, Oisik Das   +14 more
wiley   +1 more source

Decoupling pyrite and arsenopyrite in flotation using thionocarbamate collector

, 2021
Data source: Supplementary data, https://doi.org/10.1016/j.powtec.2021.02.057Thionocarbamate collectors are noted for their high flotation selectivity against pyrite under alkaline condition.
Skinner, W., Forson, P., Asamoah, R.
core   +1 more source

TYPOMORPHISM OF ARSENOPYRITE FROM THE BLAGODATNOE AND OLIMPIADA GOLD DEPOSITS (YENISEI RIDGE) [PDF]

Минералогия, 2016
Arsenopyrite is an indicator of gold potential of hydrothermal mineralization of the Olimpiada and Blagodatnoe deposits, which produces of ~40 t of gold annually. The paragenetic assemblages of arsenopyrite, its morphology, crystal structure and chemical
A.M. Sazonov, S.D. Kirik, S.A. Silyanov, O.A. Bayukov, P.A. Tishin   +4 more
doaj  

Arsenic mobilization from sulfidic materials from gold mines in Minas Gerais State

Química Nova, 2008
Acid drainage results from exposition of sulfides to the atmosphere. Arsenopyrite is a sulfide that releases arsenic (As) to the environment when oxidized.
Renato Pereira de Andrade, Salomão Santana Filho, Jaime Wilson Vargas de Mello, Bernardino Ribeiro de Figueiredo, Tânia Mara Dussin   +4 more
doaj   +1 more source

In situ single‐spot Rb/Sr cosmochronology of roedderite in the Ribbeck aubrite (asteroid 2024 BX1)

Meteoritics &Planetary Science, Volume 61, Issue 5, Page 768-781, May 2026.
Abstract The mineralogy and textures of several fragments from the Ribbeck aubrite were analyzed using a combination of scanning electron microscopy, electron microprobe analysis, μRaman spectroscopy, and laser ablation inductively coupled reaction cell mass spectrometry (LA‐ICP‐MS/MS).
Christopher J. Barnes, Aleksander Błasiak, Helge Vinje Birgerheim, Matthias Konrad‐Schmolke, Delia Rösel, Jarosław Majka, Thomas Zack   +6 more
wiley   +1 more source

Studies on Nickel and Cobalt in Arsenopyrites. I. Estimation and Determination of Cobalt in Some Arsenopyrites [PDF]

Bulletin of the Chemical Society of Japan, 1943
Abstract Nitroso-R-salt method has been investigated for the purpose of determining a minute quantity of cobalt in minerals. In some previous papers it was reported that the method is very satisfactory for determining cobalt in plants, soils and animal nutritions.
openaire   +1 more source

Production of arsenical bronze using speiss on the Elephantine Island (Aswan, Egypt) during the Middle Kingdom (Middle Bronze Age) (c.2000–1650 BCE)

Archaeometry, Volume 68, Issue S1, Page S38-S63, April 2026.
Abstract This paper presents the first direct evidence of the slags produced during the cementation alloying process of Cu with speiss inside ceramic crucibles, thus representing Cu alloying with As in Middle Kingdom Egypt. The settlement deposits from the Middle Bronze Age were excavated on Elephantine Island, within modern Aswan.
Jiří Kmošek, Martin Odler
wiley   +1 more source

An Archaeometallurgical Investigation on Some Archaeological Metal Finds From the Sasanian Site of Jahāngir, Western Iran

Archaeometry, Volume 68, Issue S1, Page S103-S115, April 2026.
ABSTRACT Twelve metal artifacts from recent excavations at the Sasanian archaeological site of Jahāngir in western Iran have been analyzed. These items include both decorative and utilitarian artifacts. The samples were examined using micro‐X‐ray fluorescence (μ‐XRF), scanning electron microscopy with energy‐dispersive X‐ray spectroscopy (SEM‐EDS), and
Omid Oudbashi, Leila Khosravi, Morteza Habibzadeh   +2 more
wiley   +1 more source

Electrochemical study of surface oxidation and collectorless flotation of arsenopyrite

, 1992
The surface oxidation of arsenopyrite in alkaline solutions has been studied by cyclic voltammetry. The initial oxidation of arsenopyrite surface produces ferric hydroxide and a realgar-like compound according to the following rection:[Figure not ...
Wang, X-H,, Forssberg, Eric,, Ahlberg, E,   +2 more
core   +1 more source

Dispersion of sodium phytate on muscovite and the implications for arsenopyrite flotation

, 2022
The effective flotation separation of sulfides and sliming silicate minerals is always a difficult problem. In this paper, the selective flotation of arsenopyrite from muscovite was studied by using sodium phytate (SP) as dispersant, and the mechanism ...
Zhao, Kaile, Wang, Zhen, Xu, Ying, Zou, Dan   +3 more
core   +1 more source