scholarly journals Effect of curing time on the dissolution of a secondary copper sulphide ore using alternative water resources

2018 ◽  
Vol 427 ◽  
pp. 012030 ◽  
Author(s):  
V Quezada ◽  
L Velásquez ◽  
A Roca ◽  
O Benavente ◽  
E Melo ◽  
...  
Keyword(s):  
Water Resources ◽  
Copper Sulphide ◽  
Curing Time ◽  
Sulphide Ore ◽  
Alternative Water

scholarly journals Pretreatment to Leaching for a Primary Copper Sulphide Ore in Chloride Media

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1260
Author(s):  
Víctor Quezada ◽  
Antoni Roca ◽  
Oscar Benavente ◽  
Montserrat Cruells ◽  
Evelyn Melo ◽  
...  
Keyword(s):  
Copper Extraction ◽  
Copper Sulphide ◽  
Curing Time ◽  
X Ray Diffraction ◽  
Initial Sample ◽  
Mining Company ◽  
Sulphide Ore ◽  
Sulphide Ores ◽  
Reflected Light ◽  
Mineral Sample

The dissolution of copper sulphide ores continues to be a challenge for the copper industry. Several media and leaching alternatives have been proposed to improve the dissolution of these minerals, especially for the leaching of chalcopyrite. Among the alternatives, pretreatment prior to leaching was proposed as an option that increases the dissolution of copper from sulphide ores. In this study, a mineral sample from a copper mining company was used. The copper grade of the sample was 0.79%, and its main contributor was chalcopyrite (84%). The effect of curing time (as pretreatment) in a chloride media on copper sulphide ore was evaluated at various temperatures: 25, 50, 70 and 90 °C. The pretreated sample and leaching residues were characterized by X-ray diffraction, scanning electron microscopy, and reflected light microscopy. Pretreatment products such as CuSO4, NaFe3(SO4)2(OH)6, and S0 were identified although with difficulty, due to the low presence of chalcopyrite in the initial sample (1.99%). Under the conditions of 15 kg/t of H2SO4, 25 kg/t of NaCl, and 15 days of curing time, a copper extraction of 93.1% was obtained at 90 °C with 50 g/L of Cl− and 0.2 M of H2SO4.

scholarly journals Co-creating narratives for WEF nexus governance: a Quantitative Story-Telling case study in the Canary Islands

2021 ◽  
Author(s):  
Violeta Cabello ◽  
David Romero ◽  
Ana Musicki ◽  
Ângela Guimarães Pereira ◽  
Baltasar Peñate
Keyword(s):  
Water Resources ◽  
Canary Islands ◽  
Sustainable Use ◽  
Quantitative Information ◽  
Practical Case ◽  
Story Telling ◽  
Practical Applications ◽  
Narrative Assessment ◽  
Alternative Water

AbstractThe literature on the water–energy–food nexus has repeatedly signaled the need for transdisciplinary approaches capable of weaving the plurality of knowledge bodies involved in the governance of different resources. To fill this gap, Quantitative Story-Telling (QST) has been proposed as a science for adaptive governance approach that aims at fostering pluralistic and reflexive research processes to overcome narrow framings of water, energy, and food policies as independent domains. Yet, there are few practical applications of QST and most run on a pan-European scale. In this paper, we apply the theory of QST through a practical case study regarding non-conventional water sources as an innovation for water and agricultural governance in the Canary Islands. We present the methods mixed to mobilize different types of knowledge and analyze interconnections between water, energy, and food supply. First, we map and interview relevant knowledge holders to elicit narratives about the current and future roles of alternative water resources in the arid Canarian context. Second, we run a quantitative diagnosis of nexus interconnections related to the use of these resources for irrigation. This analysis provides feedback to the narratives in terms of constraints and uncertainties that might hamper the expectations posed on this innovation. Thirdly, the mixed analysis is used as fuel for discussion in participatory narrative assessment workshops. Our experimental QST process succeeded in co-creating new knowledge regarding the water–energy–food nexus while addressing some relational and epistemological uncertainties in the development of alternative water resources. Yet, the extent to which mainstream socio-technical imaginaries surrounding this innovation were transformed was rather limited. We conclude that the potential of QST within sustainability place-based research resides on its capacity to: (a) bridge different sources of knowledge, including local knowledge; (b) combine both qualitative and quantitative information regarding the sustainable use of local resources, and (c) co-create narratives on desirable and viable socio-technical pathways. Open questions remain as to how to effectively mobilize radically diverse knowledge systems in complex analytical exercises where everyone feels safe to participate.

A relationship between the bubble–particle attachment time and the mineralogy of a copper–sulphide ore

2011 ◽  
Vol 24 (12) ◽  
pp. 1335-1339 ◽  
Author(s):  
Boris Albijanic ◽  
Eiman Amini ◽  
Elaine Wightman ◽  
Orhan Ozdemir ◽  
Anh V. Nguyen ◽  
...  
Keyword(s):  
Copper Sulphide ◽  
Sulphide Ore ◽  
Particle Attachment

Two-dimensional dynamic model of a copper sulphide ore bed

2003 ◽  
Vol 71 (1-2) ◽  
pp. 67-74 ◽  
Author(s):  
M Sidborn ◽  
J Casas ◽  
J Martı́nez ◽  
L Moreno
Keyword(s):  
Dynamic Model ◽  
Copper Sulphide ◽  
Two Dimensional ◽  
Sulphide Ore

FACTORS AFFECTING WATER AVAILABILITY AT HOUSE HOLD LEVEL A CASE STUDY OF QUETTA BALOCHISTAN

Al-Burz ◽  
2017 ◽  
Vol 9 (1) ◽  
pp. 259-276
Author(s):  
Shaheen Usman Kakar ◽  
Dr. Mumtaz Ali Baloch ◽  
Dr. Shahida Habib
Keyword(s):  
Water Resources ◽  
Water Availability ◽  
Secondary Data ◽  
Well Being ◽  
Water Shortage ◽  
Primary Data ◽  
Factors Affecting ◽  
Alternative Water ◽  
The Government ◽  
Sanitation Systems

  Water is of basic substance for Human development, the water brought environment, economy, civilization, livelihood provisions and well being for the society. Comprehensively understanding factors affecting the availability of water for household the water consumption behavior are required to be designed for efficient and effective water uses. To address the issue we randomly investigated 200 households in five different populated towns of Quetta city. The primary data was collected through household questionnaire survey and observation. On the other hand, secondary data included books, journal articles and websites. Data were analyzed using the Statistical Package for Social Science (SPSS). The findings of this study revealed that type of family, monthly income, major source of water, presence of garden at household and responsible factor of water shortage are significantly correlated with water availability. The survey concludes that the available water resources provided by the government are not enough for the daily household usage resultantly the respondents struggle hard to managed alternative water resources as per their requirement. The paper recommend to bring  awareness for the public sector about their right to water and provision of water sources is core responsibly of Government, especially to draw a policy for new constructions of water resources or by the remodeling of water and sanitation systems.

Necessity for Alternative Water Resources for Supply of Water in the Time of Emergency

2013 ◽  
Vol 24 (1) ◽  
pp. 111-121
Author(s):  
Omar Aburizaiza ◽  
Nayyer Zaigham ◽  
Talal Mokhtar
Keyword(s):  
Water Resources ◽  
Alternative Water

scholarly journals Rainwater harvesting and greywater recycling as alternative water resources: a survey of public opinion

2018 ◽  
Vol 45 ◽  
pp. 00090 ◽  
Author(s):  
Agnieszka Stec
Keyword(s):  
Public Opinion ◽  
Water Resources ◽  
Water Supply ◽  
Rainwater Harvesting ◽  
Water Research ◽  
Recycling System ◽  
Alternative Water ◽  
Alternative Sources

This paper reports results from a survey of households in Poland concerning the use of alternative sources of water. Research showed that respondents were not too inclined to replace water from the water supply with greywater and rainwater. They would be afraid of using both greywater (79%) and rainwater (60%) in their household. The biggest concern was the use of alternative sources of water for doing laundry - more than 50% of respondents identified this issue in both cases. Only 43% of respondents would like to install a greywater recycling system and much more -78% a rainwater harvesting system. For the vast majority of respondents (80%) a subsidy would be an incentive for using these systems in their household.

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