Characteristics of nitrogen and phosphorus adsorption by Mg-loaded biochar from different feedstocks.

Herein, biochars from 6 different feedstocks (taro straw, corn straw, cassava straw, Chinese fir straw, banana straw, and Camellia oleifera shell) were produced using magnesium chloride (MgCl) as a modifier due to their sorption behavior toward NH-N and phosphorus in an aqueous solution. The biochar characteristics were evaluated, including pH, pH, biochar magnesium content, and total pore volume (PV). The experimental results in terms of the kinetics and equilibrium isotherms showed that the cassava straw and banana straw biochars exhibited the theoretical maximum saturated adsorption capacities of 24.