Resource Use of Sewage Sludge for Soil Application
A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".
Deadline for manuscript submissions: 20 August 2024 | Viewed by 2863
Special Issue Editors
Interests: sewage sludge; pyrolysis; sewage sludge biochar; phosphorus recovery; renewable phosphate fertilizer
Special Issue Information
Dear Colleagues,
Fast urbanization leads to gigantic volumes of municipal wastewater arising from human dietary life being discharged to municipal wastewater treatment plants. After wastewater is purified via aerobic and anaerobic treatments, a commensurate volume of sewage sludge (SS) finally in the form of a solid cake with a moisture of ~78% is generated. With the surge in efforts towards carbon neutrality, transforming SS into valuable products in via efficient and sustainable manners is becoming a pressing challenge the wastewater industry is facing. Intensively reported studies demonstrate that a considerable amount of phosphorus (P), a life-essential and non-renewable element, in SS could be mined to alleviate the supply chain pressure of phosphate rocks that are becoming increasingly scarce.
Before exploiting this P resource from SS, however, inherent hazardous substances such as heavy metals (HMs) should be tackled, which indeed hamper SS valorization and P recovery and recycling. Therefore, it is crucial to develop a facile, efficient, and process-tunable approach to mining and reusing SS-included P while accommodating prospective ecological risks induced by those accompanying HMs prospects to maximize the SS resource value beyond the waste property. Relevant thermodynamic evidences unraveled the roles of biomass, alkali, and their binary in steering the balance of phosphorus bioavailability enhancement and heavy metal stabilization in the progress of SS pyrolysis, which advances the knowledge of a facile co-pyrolysis strategy to maximally leverage SS resource property.
Dr. Le Fang
Dr. Siqi Tang
Guest Editors
Manuscript Submission Information
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Keywords
- sewage sludge
- pyrolysis
- phosphorus recovery
- heavy metal stabilization
- biochar
