Biobased materials received significant attention as a potential and renewable resource for producing valuable products such as biochar due to their abundant availability and low cost. Biobased material (biomass) is characterized by its chemical properties like low ash content and ability to yield high amounts of liquid. Over the years, researchers have dedicated great efforts to this utility by using biobased materials and lignocellulosic biomasses as they have excellent ability for wastewater treatment and the removal of hazardous materials. Recently, a rise of interest has been oriented towards biochar derived from waste biomass due to its interesting properties. This highly porous carbonous material, which is rich in charcoal, is becoming very attractive for many applications due to its abundance. Biochar is a renewable fuel that is added to soil to improve its quality because of its higher proportion of aromatic C and condensed aromatic structures. In this chapter, we have highlighted the economical and environmentally friendly technologies recently opted for biochar production and their benefits. The pyrolysis techniques possess good abilities to produce biochar. The effect of the influencing parameters (time and temperature) on the pyrolysis are described. Finding urgent solutions for the daily environmental challenges is becoming primordial for all researchers. Presently, the integration of clean technologies for environmentally safe production and applications of biochar has gained great interest. In the present chapter, we discussed the main production methods of biochar, their properties, merits and demerits, and main applications. A particular interest was given to the methods used for the modification of biochar. A variety of factors are discussed including the main influencing parameters. Finally, a critical overview was provided, followed by some potential future solutions for better use of biochar in environmental challenges.