Application of biochar for the removal of pollutants from aqueous solutions.

Preparation, modification and environmental application of biochar: A review

As a low-cost adsorbent, biochar can be used as a low-cost adsorbent for wastewater treatment, particularly with respect to treating heavy metals in wastewater. A number of studies have demonstrated effective removal of heavy metals from aqueous solutions by biochar and, in some cases, proven the superiority of biochars to activated carbons. Among several factors affecting the sorption ability of biochars, feedstock materials play a significant role. This review incorporates existing literature to understand the overall sorption behavior of heavy metals on biochar adsorbents. Depending on the biochar type, heavy metal can be removed by different mechanisms such as complexation, physical sorption, precipitation and electrostatic interactions. Mathematical sorption models can be used to understand the efficiency of biochar at removing heavy metals, and promote the application of biochar technology in water treatment.

A review of biochar as a low-cost adsorbent for aqueous heavy metal removal

Production and utilization of biochar: A review

https://people.clas.ufl.edu/azimmer/files/Publication-pdf/Yao12_Effect-of-biochar-amendment-on-sorption-and-leaching-NO3-NH3-P-in-sandy-soil.pdf

Effect of biochar amendment on sorption and leaching of nitrate, ammonium, and phosphate in a sandy soil.

http://www.kiwiscience.com/JournalArticles/EnvironPoll2011.pdf

Eva Harris

Papers

A review of biochars’ potential role in the remediation, revegetation and restoration of contaminated soils