The effectiveness of anaerobic digestion in removing estrogens and nonylphenol ethoxylates

► Anaerobic digestion protects the re-use environment from steroid estrogens and NPEOs. ► Removal of ΣEST was >50% for primary sludge for mesophilic and thermophilic conditions. ► Removals for NPEOs were higher in the digestion of mixed sludge.