15 results for group: report

Enhanced Weathering Policy Primer: Assessing the Opportunity

INTRODUCTION There is clear scientific consensus that, in addition to rapid and deep reduction of global greenhouse gas emissions, carbon dioxide removal (CDR) will be required at an immense, multi-gigatonne (Gt) annual scale by mid-century to meet the goals of the Paris Agreement and limit warming to 1.5 or even 2°C.1 CDR encompasses a range of approaches, and to meet the massive challenge to achieve gigatonne scale will require a portfolio of solutions.2 Many of these pathways are new technologies that could potentially take years to develop, demonstrate, and deploy. Methods of CDR that offer meaningful co-benefits, and that can be ...

Measurements in Geochemical Carbon Dioxide Removal

SUMMARY Geochemical carbon dioxide removal (CDR) technologies capture and store carbon dioxide (CO2) from the atmosphere using alkaline materials that are rich in calcium (Ca) and magnesium (Mg). Alkaline materials include natural rocks such as basalt, industrial by-products such as steel slag, or artiicially generated and industrially produced materials such as lime. Geochemical CDR technologies speed up the reactions of such materials with air or other CO2-bearing gases, and convert the CO2 into solid carbonate minerals or dissolved inorganic carbon in the ocean. Gigatonne (Gt) scale removal is potentially possible with geochemical CDR owing to ...

Co-utilization of rock dust, mineral fines and compost

Robin A.K. Szmidt & John Ferguson Abstract This report examines the relevance and potential of techniques using rockdust to remineralize soils in Scotland. Rockdust (RD) is a generic term applied to fine materials produced as by-products of quarrying and mineral processing. The concept is concerned with making available a multitude of minerals from freshly crushed rocks that are considered by advocates not to be present in larger quantities in weathered soils. Claimed benefits include : •enhanced long term sustainable soil fertility and diverse soil biology; •multi-season effects; •enhanced plant establishment, growth and vigour;...

Food Patterns Equivalents Intakes by Americans: What We Eat in America,

Shanthy A Bowman, Natalia Schroeder, Randy P LaComb Abstract The 2015-2020 Dietary Guidelines for Americans (DGA) encourage Americans to increase their fruit, vegetables, and whole grains intakes and limit added sugars and solid fats intakes [1]. This report highlights the salient changes in the U.S. population’s intake of selected USDA Food Patterns groups, including added sugars and solid fats, using What We Eat in America, NHANES 2003-2004 and 2015-2016 dietary data [2-4]. Download

Carbon Dioxide Mineralization Feasibility in the United States

Madalyn S. Blondes, Matthew D. Merrill, Steven T. Anderson, and Christina A. DeVera Abstract Geologic carbon dioxide (CO2) storage is one of many methods for stabilizing the increasing concentration of CO2 in the Earth’s atmosphere. The injection of CO2 in deep subsurface sedimentary reservoirs is the most commonly discussed method; however, the potential for CO2 leakage can create long-term stability concerns. This report discusses the feasibility of an alternative form of geologic CO2 storage: CO2 mineralization. In this method, CO2 reacts with rocks and minerals to form solid and stable carbonate rocks. New pilot projects and laboratory-b...

Information for the Application of Silicate Rock Dust for the Amelioration of Forest Soils

This report contains information for “fertilization with rock dust” with an orientation towards practical application. The widely used term “gesteinsmehl” will be limited here to pulverized rocks of silicate origin.

Pot Test Trial II of Basalt, Serpentine, Bentonite, Feldspar, and Kaolin

This is a report on the second set of pot test trials run by Dr. Gernot Graefe at the Gartnerhof in Ganserndorf Sud near Vienna.

Compensational Fertilization with Silicate Rock Dust For Buffering Damaged Forest Soils: First Experential Report

The fertilization of forest areas has increased substantially in recent years. In all, since 1982 over 500,000 hectares of forest were fertilized which is more than 7% of the forest area (in Germany). On about 95% of the areas fertilized in 1988, magnesium-containing lime (various types such as dolomite, limestone, etc.) was applied. On about 15% of the area, additional fertilization with several minerals, containing potassium and phosphorus were applied, in addition to the limestone.

Remineralization Trials: Minplus and Bananas A Cost Benefit Study

Banana Growers Kevin and Gary Harding have been trialing rock dust from Pin Gin Hill quarry since mid-1985. Using experience gained from these trials they radically altered their fertilizer applications, and in August 1990 planted out a 4 Hectare block using Minplus rock dust as the main fertilizer.

Effect of Silicate Rock Dust in Forests: Result of the Experiments in the Forest of Arenberg-Schleiden after Five Years

The advantage of rock dust is that it is a natural, raw material, and carrier of numerous minerals and trace elements with long term effect. The nutrients are released slowly and gently during the process of natural weathering in the forest ecosystem (without fertilization shock). In the following, we report the latest results of the experiments in the forest of Arenberg-Schleiden.