29.06.2020

# Media

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MIT Technology Review: How green sand could capture billions of tons of carbon dioxide

"Scientists are taking a harder look at using carbon-capturing rocks to counteract climate change, but lots of uncertainties remain."

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02.06.2020

# Media

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Fast Company: Ever been to a green sand beach? The newest geohack to fight climate change

"Project Vesta is conducting an experiment by spreading a green mineral on beaches, where its interaction with the waves will pull carbon from the air."

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13.02.2020

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MSN: Could putting pebbles on beaches help solve climate change?

"Eric Matzner, who co-founded the nonprofit Project Vesta this year, intends to mine tons of a soft, crumbly green volcanic stone called olivine, grind it into pebbles and spread it on shorelines, coves and beaches, where the wave action will weather it down like a river sculpts gravel."

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18.12.2019

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San Francisco Chronicle: Could putting pebbles on beaches help solve climate change?

"Eric Matzner, who co-founded the nonprofit Project Vesta this year, intends to mine tons of a soft, crumbly green volcanic stone called olivine, grind it into pebbles and spread it on shorelines, coves and beaches, where the wave action will weather it down like a river sculpts gravel."

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04.11.2019

# New Publications

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Wang, Jiajie; et al. (2018): Simultaneous H2 Production with Carbon Storage by Enhanced Olivine Weathering in Laboratory-scale: An Investigation of CO2 Effect

Wang, Jiajie; Nakamura, Kengo; Watanabe, Noriaki; Okamoto, Atsushi; Komai, Takeshi (2018): Simultaneous H2 Production with Carbon Storage by Enhanced Olivine Weathering in Laboratory-scale: An Investigation of CO2 Effect. In : The Second International Conference on Materials Chemistry and Environmental Protection. The Second International Conference on Materials Chemistry and Environmental Protection. Sanya, China, 23.11.2018 - 25.11.2018: SCITEPRESS - Science and Technology Publications, pp. 83–87.

"This study suggests simultaneous multiple energy productions and CO2 storage can be realized by olivine weathering process when using a CO2-rich hydrothermal condition."

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17.09.2019

# Projects

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Project: Green Sand

"Take carbon out of the atmosphere in a cost effective, sustainable way with greenSand CO2 Certificates."

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05.05.2019

# Projects

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Project: Project Vesta

"Project Vesta is a project to remove carbon dioxide (CO2) from the atmosphere and oceans by accelerating the weathering of a type of rock called olivine. When olivine interacts with water and the CO2 dissolved in it, a chemical reaction (called weathering) occurs that creates a bicarbonate solution that marine animals like corals use in their shells. The CO2 remains locked in that form and eventually settles as sediment or turns to limestone rock on the sea floor."

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03.09.2018

# Media

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Brunel University London: Engineering the climate could cost us the earth

"Capitalism is pouring billions of tonnes of carbon dioxide into the atmosphere – driving climate change. Proposed solutions include reflecting the sun’s light away from earth and sucking the carbon out again – through geoengineering. But is this realistic, is it safe, is it just sleight of hand?"

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05.02.2018

# New Publications

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Griffioen, Jasper (2017): Enhanced weathering of olivine in seawater. The efficiency as revealed by thermodynamic scenario analysis

Griffioen, Jasper (2017): Enhanced weathering of olivine in seawater. The efficiency as revealed by thermodynamic scenario analysis. In The Science of the Total Environment 575, pp. 536–544. DOI: 10.1016/j.scitotenv.2016.09.008.

"This study aimed to characterise how olivine can weather in seawater, to elucidate the role of secondary precipitation and to ascertain the efficiency in terms of molar CO2 removal per mole of olivine dissolution. Geochemical thermodynamic equilibrium modelling was used, which considered both the variable mineralogical composition of olivine and the kinds of secondary precipitates that may be formed. The advantage is that such an approach is independent from local or regional factors as temperature, related kinetics, mineralogy, etc. The results show that the efficiency falls when secondary precipitates are formed."

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10.04.2017

# New Publications

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Meysman, Filip J. R.; Montserrat, Francesc (2017): Negative CO2 emissions via enhanced silicate weathering in coastal environments

Meysman, Filip J. R.; Montserrat, Francesc (2017): Negative CO2 emissions via enhanced silicate weathering in coastal environments. In Biology letters 13 (4). DOI: 10.1098/rsbl.2016.0905

"Enhanced silicate weathering (ESW) proposes to exploit the natural process of mineral weathering for the removal of CO2 from the atmosphere. Here, we discuss the potential of applying ESW in coastal environments as a climate change mitigation option. By deliberately introducing fast-weathering silicate minerals onto coastal sediments, alkalinity is released into the overlying waters, thus creating a coastal CO2 sink. Compared with other NETs, coastal ESW has the advantage that it counteracts ocean acidification, does not interfere with terrestrial land use and can be directly integrated into existing coastal management programmes with existing (dredging) technology."

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