I am wondering if there is any published literature that looks into dimensional stability of biochar pores, and whether such pores shrink when the previously absorbed moisture is released under normal conditions (for example, natural drying or in soil)?
Destruction of macropores after aging of biochar occured but it create micro and meso pores.
Dr. Souradeep,
I there is no possibility of shrinkage of pores due to desorption of moisture especially when it is done in natural environment. On other hand, we can see the possibility of shrinkage if the biochar is prepared at low temperature and have some uncarbonized organic portion that can swell or shrink due to moisture adsorption or desorption.
In the case of soil, biochar going to face the a number of situations like release and sorb the water, organic and inorganic in OR from soil. So, I think it is not possible to assume the impact of water desorption on pores structure of biochar once we add them in to the soil.
Hope this will help you to find the answer of your question.
Sandeep
I *think there is no...
Sorry for the typing mistake in previous comment (Answer)
All the best
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