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Synergisms between Compost and Biochar for Sustainable Soil Amelioration

Author(s): Fischer D, Glaser B

Published: February, 2012

Publisher: Management of Organic Waste

DOI: 10.5772/31200

Tags: Biochar

URL: http://www.intechopen.com/books/management-of-organic-waste/synergism-between-biochar-and-compost-for-sustainable-soil-amelioration

Abstract: Driven by climate change and population growth, increasing human pressure on land forces conversion of natural landscapes to agricultural fields and pastures while simultaneously depleting land currently under agricultural use (Lal, 2009). Consequently, a vicious circle develops; further aggravating climate change, soil degradation, erosion, loss of soil organic matter (SOM) and leaching of nutrients. Therefore, sustainable concepts for increased food production are urgently needed to lower pressure on soils, in order to reduce or prevent the negative environmental impacts of intensive agriculture. A key for such strategies is the maintenance or increase of SOM level inducing positive ecosystem services such as increased productivity, nutrient and water storage, intact filter capacity, rooting, aeration and habitat for soil organism etc. In summary, SOM improves soil fertility and C storage (C Sequestration).


Technical, economical, and climate-related aspects of biochar production technologies: a literature review.

Author(s): Meyer S, Glaser B, Quicker P

Published: November, 2011

Publisher: Environmental science & technology

DOI: 10.1021/es201792c

Tags: Biochar, Economics

URL: http://pubs.acs.org/doi/abs/10.1021/es201792c

Abstract: For the development of commercial biochar projects, reliable data on biochar production technologies is needed. For this purpose, peer-reviewed scientific articles on carbonization technologies (pyrolysis, gasification, hydrothermal carbonization, and flash carbonization) have been analyzed. Valuable information is provided by papers on pyrolysis processes, less information is available on gasification processes, and few papers about hydrothermal and flash carbonization technologies were identified. A wide range of data on the costs of char production (between 51 US$ per tonne pyrolysis biochar from yard waste and 386 US$ per tonne retort charcoal) and on the GHG balance of biochar systems (between −1054 kg CO2e and +123 kg CO2e per t dry biomass feedstock) have been published. More data from pilot projects are needed to improve the evaluation of biochar production technologies. Additional research on the influence of biochar application on surface albedo, atmospheric soot concentration, and yield responses is necessary to assess the entire climate impact of biochar systems. Above all, further field trials on the ability of different technologies to produce chars for agricultural soils and carbon sequestration are essential for future technology evaluation.


Biochar is carbon negative

Author(s): Glaser B, Parr M, Braun C, Kopolo G

Published: February, 2009

Publisher: Nature Geoscience

DOI: 10.1038/ngeo395

Tags: Biochar

URL: http://www.nature.com/ngeo/journal/v2/n1/full/ngeo395.html

Abstract: The editorial “Half-hearted engineering” and the commentary “Ranking geo-engineering schemes” in Nature Geoscience discuss various schemes for addressing the issue of climate change. We would like to draw attention to the production and burial of biochar as an additional scheme that allows the sequestration of carbon in the soil at the same time as providing fertilizer.


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