Transformation of Phosphorus during (Hydro)thermal Treatments of Solid Biowastes: Reaction Mechanisms and Implications for P Reclamation and Recycling
- 6 September 2017
- journal article
- review article
- Published by American Chemical Society (ACS) in Environmental Science & Technology
- Vol. 51 (18), 10284-10298
- https://doi.org/10.1021/acs.est.7b02011
Abstract
Phosphorus (P) is an essential nutrient for all organisms, thus playing unique and critical roles at the food–energy–water nexus. Most P utilized by human activities eventually converges into various solid biowastes, such as crop biomass, animal manures, and sewage sludges. Therefore, integration of efficient P recovery practices into solid biowaste management will not only significantly reduce the dependence on limited geological P resources but also reduce P runoff and related water contamination issues associated with traditional waste management strategies. This study reviews the applications of (hydro)thermal techniques for the treatment of solid biowastes, which can greatly facilitate P recovery in addition to waste volume reduction, decontamination, and energy recovery. Research showed that P speciation (including molecular moiety, complexation state, and mineralogy) can experience significant changes during (hydro)thermal treatments, and are impacted by treatment techniques and conditions. Changes in P speciation and overall properties of the products can alter the mobility and bioavailability of P, and subsequent P reclamation and recycling efficiency of the treatment products. This review summarizes recent progresses in this direction, identifies the challenges and knowledge gaps, and provides a foundation for future research efforts targeting at sustainable management of nutrient-rich biowastes.Keywords
Funding Information
- Division of Ocean Sciences (559087)
- China Scholarship Council
- Division of Chemical, Bioengineering, Environmental, and Transport Systems (1605692)
- National Science Foundation (1739884)
- Georgia Water Resource Institute
This publication has 100 references indexed in Scilit:
- Hydrothermal Reactions of Agricultural and Food Processing Wastes in Sub- and Supercritical Water: A Review of Fundamentals, Mechanisms, and State of ResearchJournal of Agricultural and Food Chemistry, 2013
- Water, energy and food interactions—Challenges and opportunitiesFrontiers of Environmental Science & Engineering, 2013
- Biochar of animal origin: a sustainable solution to the global problem of high‐grade rock phosphate scarcity?Journal of the Science of Food and Agriculture, 2013
- Review of fast pyrolysis of biomass and product upgradingBiomass and Bioenergy, 2012
- The Impact of First-Generation Biofuels on the Depletion of the Global Phosphorus ReserveAMBIO, 2012
- Plant-availability to barley of phosphorus in ash from thermally treated animal manure in comparison to other manure based materials and commercial fertilizerEuropean Journal of Agronomy, 2010
- Upgrading and dewatering of raw tropical peat by hydrothermal treatmentFuel, 2010
- Phosphorus Speciation in Agro-Industrial Byproducts: Sequential Fractionation, Solution 31P NMR, and P K- and L2,3-Edge XANES SpectroscopyEnvironmental Science & Technology, 2010
- The story of phosphorus: Global food security and food for thoughtGlobal Environmental Change, 2009
- Hygienic and ecological risks connected with utilization of animal manures and biosolids in agricultureLivestock Science, 2006