Figure 2
From: Potential mechanisms involving the immobilization of Cd, As and Cr during swine manure composting
Changes in organic matter (A), humic substances (B), humic acid/fulvic acid (C), dissolved organic matter (D), total nitrogen (E), and total phosphorus (F) during swine manure composting with different initial C/N ratios and bulking agent types. Different lowercase letters indicate significant differences among treatments, while the same lowercase letters indicate no significant differences among treatments (p < 0.05). The error bars represent the standard deviation of three replicates.
