Evaluation of the Use of Sewage Sludge Biochar as a Soil Amendment—A Review

In recent decades, minimization and recycling/reuse policies were introduced to reduce the quantities of generated waste for alternative recovery. Organic wastes represent 46% total global solid waste. Possible uses organic include using it as fertilizer amendment soil, energy recovery production chemical substances. Sewage sludge disposal reuse are identified future problems concerning The amount in entire world has increased dramatically, this tendency is expected increase significantly years come. most developed countries, special attention given sewage treatment order improve quality safety on ground surface. pyrolysis considered an acceptable method, from economic ecological perspective, beneficial sludge. This method many advantages because, during process, volume reduced by 80%, pathogenic agents hazardous compounds eliminated, metals immobilized residue inorganic fractions a stabilized form pyrolytic residues (biochar). biochar does not contain rich carbon nutrients.