The invention relates to a
moss-based
biochar material and a preparation method thereof.According to the preparation method, waste
moss is used as a
raw material, the problem that a carbon material is prepared from traditional waste
biomass is solved, and a thought is provided for high-value utilization of bryophytes; the preparation method comprises the steps of
moss pretreatment, ammoniation treatment,
carbonization activation and formed carbon cleaning, an ammoniation agent is
ammonia water, and the
ammonia water has excellent pore-forming capacity and is beneficial to improving the adsorption capacity of heavy
metal ions; raw materials are easy to obtain, operation steps are simple, production cost is low, popularization is convenient, and large-scale benefit production can be achieved; the invention further relates to application of the moss-based
biochar material in preparation of a heavy
metal adsorbent, the moss-based
biochar material is used for adsorbing heavy
metal Ni (II) in
wastewater, and experimental
verification shows that compared with moss which is not subjected to ammoniation treatment, the adsorption capacity of the biochar material prepared from the moss which is subjected to ammoniation treatment on the heavy metal Ni (II) is 1.15-2.38 times, and the adsorption capacity of the biochar material prepared from the moss which is subjected to ammoniation treatment on the heavy metal Ni (II) is 1.15-2.38 times. A brand-new thought is provided for preparing the heavy metal adsorbent from the waste
biomass.