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Water contamination by ammonium ions presents huge risks to the ecosystems. This work evaluated the potential application of digested sludge pyrolyzed biochar on ammonium removal. Anaerobic digester sludge was collected from a municipal wastewater treatment plant in Alberta, Canada and pyrolyzed...
Sinkholes are frequently reported around the world, and soil erosion around defective sewer pipe is found to be one of the possible cause of sinkholes. As water infiltrates through the defect in a pipe, soil can be washed into the pipe leading to a cavity or even sinkhole formation. Besides,...