Research Article
Biochar Derived from Domestic Sewage Sludge: Influence of Temperature Pyrolysis on Biochars’ Chemical Properties and Phytotoxicity
Figure 2
Variation of root elongation inhibition of lettuce seeds in the biochars produced at 260°C (PSS1), 420°C (PSS2), and 610°C (PSS3) with respect to the raw sewage sludge (SS). For each parameter, sample mean values with the same letters are not statistically different at .