Analysis of the simultaneous adsorption mechanism of ammonium and phosphate on magnesium-modified biochar and the slow release effect of fertiliser

Qingshan He; Xiufen Li; Yueping Ren

doi:10.1007/s42773-022-00150-5

Biochar ›› 2022, Vol. 4 ›› Issue (1) DOI: 10.1007/s42773-022-00150-5

Original Research

Analysis of the simultaneous adsorption mechanism of ammonium and phosphate on magnesium-modified biochar and the slow release effect of fertiliser

Qingshan He ¹^,²^,³
, Xiufen Li ¹^,²^,³^,^b
, Yueping Ren ¹^,²^,³

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Abstract

•	Magnesium was introduced to modify the corn stalk biochar for simultaneous adsorption of ammonium and phosphate.
•	Ammonium and phosphate adsorption by magnesium modified biochar involved multi-mechanisms.
•	Compared to the leaching performance with CF, MgB-A was more stable and maintained a long-term slow-release of ammonium and phosphate.
•	MgB-A could be used as a struvite carbon-based fertiliser to promote plant growth.

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Qingshan He, Xiufen Li, Yueping Ren. Analysis of the simultaneous adsorption mechanism of ammonium and phosphate on magnesium-modified biochar and the slow release effect of fertiliser. Biochar, 2022, 4(1): DOI:10.1007/s42773-022-00150-5