Mineral deposits in the Rotokawa geothermal pipelines, New Zealand

Reyes, Agnes G.; Trompetter, W.J.; Britten, K.; Searle, J.

doi:10.1016/s0377-0273(02)00355-4

Cited by 61 publications

(30 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fluid temperature and chemistry of the Rotokawa Geothermal Field, in both the pre and post production states, has been reported in many publications (Bloomberg et al, 2012;Bowyer et al, 2008;Chambefort et al, 2011;Collar and Browne, 1985;Giggenbach, 1995;Hedenquist et al, 1988;Henley and Middendorf, 1985;Khabar et al, 1986;Seward, 1987, 1990;Price et al, 2011;Rae et al, 2011;Reyes et al, 2002;Ward et al, 2006;Winick et al, 2011), resource consents documentation (e.g. Milicich and Hunt, 2007) and by internal industry reporting (e.g.…”

Section: Fluid Propertiesmentioning

confidence: 98%

“…Overall, the Rotokawa Geothermal Field is classified as an arc-type geothermal system with fluid derived from andesitic rock as suggested by its Cl, B and Cs content, and containing a high (∼up to 15%) magmatic component determined from its isotopic composition (Giggenbach, 1995). The Rotokawa Geothermal Field is a high gas flux (CO 2 emission rate of 633 ± 16 t/d, minimum H 2 S emission from the reservoir of 80 t/d, based on the CO 2 /H 2 S ratio of the Rotokawa fumarole) field with the N 2 , He, and Ar composition of the gases falling on a magmaticgroundwater trend (Bloomberg et al, 2012;Hedenquist et al, 1988;Reyes et al, 2002).…”

Section: Fluid Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

A review of the Rotokawa Geothermal Field, New Zealand

et al. 2016

View full text Add to dashboard Cite

Section: Fluid Propertiesmentioning

confidence: 98%

Section: Fluid Propertiesmentioning

confidence: 99%

A review of the Rotokawa Geothermal Field, New Zealand

et al. 2016

View full text Add to dashboard Cite

“…Further, during fluid migration in the earth's crust, it can mix with fluids of different origin and/or with seawater which would further affect its composition. As an additional group of fluids, one should mention fluids from young/recent volcanic rocks, which can be found, for example, in Iceland (Carvalho, Fojaz, and Almelda, 2006) or New Zealand (Reyes et al, 2003). They are marked due to their relatively young age by low salinity and due to their location in tectonically active areas by a high geothermal gradient.…”

Section: Fluid Composition and Classificationmentioning

confidence: 99%

Energetic Use of EGS Reservoirs

Saadat

Frick

Kranz

et al. 2010

Geothermal Energy Systems

View full text Add to dashboard Cite

The principle for the energetic use of EGS (enhanced geothermal system) reservoirs is based on the production of a fluid which, carries the geothermal heat, in a production well, the extraction of heat from the fluid on the surface with a heat exchanger, and the reinjection of the cooled fluid into the reservoir in an injection well. The extracted heat can be used for heat, power, or chill provision (Figure 6.1). The different technical aspects and constraints which are related to such plants are the subject of this chapter. The following sections are designed to give a general overview on the energetic utilization options and EGS plant design. The focus will be on typical EGS applications which use formation water as heat carrier, in a temperature range between 100 to about 200 • C.Other EGS plant concepts which are researched and might be realized at a few sites in the future are not discussed. Such futuristic concepts refer to EGS plants that can assess steam reservoirs and geo-pressured reservoirs or EGS plants using heat carriers other than formation water, such as CO 2 . Utilization OptionsIn the following section, the different options for energetic use of EGS reservoirs are outlined with focus on the most important thermodynamic aspects. More details on thermodynamic aspects can be obtained from the literature, for example, Ç engel and Boles (2006) and Dinçer and Rosen (2007). The goal of this section is to characterize the different utilization options based on energy efficiency and exergy efficiency considerations. Energetic ConsiderationsThe form of energy which can be supplied by any heat source mainly depends on the temperature level. For EGS plants, this is the temperature of the reservoir or, more precisely, the temperature of the produced geothermal fluid. Different energy Geothermal Energy Systems. Edited by Ernst Huenges

show abstract

“…The extremely low mean global abundance of Te (10 Ϫ2 to 10 Ϫ8 ppm) (33) conceals the fact that its distribution is highly heterogeneous, occurring at concentrations of 12 to 17 ppm in hydrothermal vents (10), 14.8 ppm in gold mines (32), and a surprising 30.6 ppt in mineral scales in some geothermal pipelines (23).…”

mentioning

confidence: 99%

“…Furthermore, respiration on toxic oxidized Se, As, and V is known (12,26). Te, Se, and V are concentrated in both hydrothermal and industrial environments (10,23,32,33) which select for bacteria that efficiently metabolize high concentrations of oxidized metal(loid)s.…”

mentioning

confidence: 99%

Anaerobic Respiration on Tellurate and Other Metalloids in Bacteria from Hydrothermal Vent Fields in the Eastern Pacific Ocean

Csotonyi

Stackebrandt

Yurkov

2006

Appl Environ Microbiol

View full text Add to dashboard Cite

This paper reports the discovery of anaerobic respiration on tellurate by bacteria isolated from deep ocean (1,543 to 1,791 m) hydrothermal vent worms. The first evidence for selenite-and vanadate-respiring bacteria from deep ocean hydrothermal vents is also presented. Enumeration of the anaerobic metal(loid)-resistant microbial community associated with hydrothermal vent animals indicates that a greater proportion of the bacterial community associated with certain vent fauna resists and reduces metal(loid)s anaerobically than aerobically, suggesting that anaerobic metal(loid) respiration might be an important process in bacteria that are symbiotic with vent fauna. Isolates from Axial Volcano and Explorer Ridge were tested for their ability to reduce tellurate, selenite, metavanadate, or orthovanadate in the absence of alternate electron acceptors. In the presence of metal(loid)s, strains showed an ability to grow and produce ATP, whereas in the absence of metal(loid)s, no growth or ATP production was observed. The protonophore carbonyl cyanide m-chlorophenylhydrazone depressed metal(loid) reduction. Anaerobic tellurate respiration will be a significant component in describing biogeochemical cycling of Te at hydrothermal vents.

show abstract

Mineral deposits in the Rotokawa geothermal pipelines, New Zealand

Cited by 61 publications

References 40 publications

A review of the Rotokawa Geothermal Field, New Zealand

A review of the Rotokawa Geothermal Field, New Zealand

Energetic Use of EGS Reservoirs

Anaerobic Respiration on Tellurate and Other Metalloids in Bacteria from Hydrothermal Vent Fields in the Eastern Pacific Ocean

Contact Info

Product

Resources

About