Redox state and prevailing ambiance influence heavy metal inactivation and detoxification as well as transformation of nutrients (C, N & P) in soil and aquatic environment
Most of the studies have been done with regard to biochar originated from plant biomass. Application of biochar , especially in acid soils has proven more beneficial than alkaline soils. hoever , there are pressing documents to prove that biochars are equally effective in alkaline soils as well . Application of biochar invariably improves the adsorptive capacity of soils through enhancement of CEC of soils, therefore , better NUE can very well be anticipated. If it is acidic soils , it brings an improvement of soil pH , thereby , brings conspicuous imprvoments in soil fertility plus biological soil properties as well. but , the most distinctive advantage of biochar as an physical amendment is the provision of carbon contributing handsomely towards the non-labile fraction of soil SOC, as the carbon from biochar has maximum residence time compared to ant other form of organic residues including the organic manures...
Anoop is on the ball, but you should be aware of the poor quality of much of the literature on the effects of biochar in acidic soils, because important effects are not controlled for, e.g. on pH and physical properties.
Paul, you will find plenty of quality literature addressing the issues of controlling pH, and physico-chemical properties of acid soils. I am enclosing some excellent works on biochar , mainly concentrating acidic soils. Hope , you find them useful.
Please follow the in-depth discussion on this issue tracking the question entitled Do you feel , biochars could be a promising alternative to organic manures? on RG . you will find very interesting discussion...
Excellent, the ball has started rolling! The discussion is going to be stimulating. More researchers are welcome to share their views, news, and up-to-date quality resources. I expect your valuable observation on heavy metal inactivation and detoxification as well as transformation of nutrients (C, N & P) in soil/sediment or soil/sediment-water system using biochar application or amendment. Please focus your discussion on the how and why aspects.
I haven't yet received expected observations, explanation and insight pertaining to heavy metal inactivation potential and efficiency of biochar amendment subject to different physicochemical regime. The researchers having experience and expertise are welcome to participate in the discussion and enlighten with resources.