It is a
stable solid, rich in carbon, and can be used as a carbon sink in soils
for thousands of years (Wardle et al., 2008). When applied to soils,
biochar can introduce multiple benefits, including improving soil
fertility, raising crop productivity, increasing soil nutrient and
water holding capacity, and reducing emissions of greenhouse gasses
from soils to mitigate global warming (Lehmann et al., 2008).
Several research efforts have been made to evaluate biochar as
an adsorbent in water treatment applications for removing various
contaminations, including heavy metals, nutrients, and organic
compounds (Beesley et al., 2010; Inyang et al., 2012; Yao et al.,
2012).