From wastewater to fertilizer products: Alternative paths to mitigate phosphorus demand in European countries

Santos, Andreia F.; Almeida, Patrícia V.; Alvarenga, Paula; Gando-Ferreira, Licínio M.; Quina, Margarida J.

doi:10.1016/j.chemosphere.2021.131258

Cited by 46 publications

(22 citation statements)

References 87 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Numerous studies have reported using iron-containing sludge as a fertilizer for plant growth and soil erosion mitigation [ 32 , 33 , 34 ]. Wang et al [ 33 ] determined the feasibility of steel sludge as an iron fertilizer for soil improvement and corn growth.…”

Section: Resultsmentioning

confidence: 99%

Environmental Remediation Potential of Ferrous Sulfate Waste as an Eco-Friendly Coagulant for the Removal of NH3-N and COD from the Rubber Processing Effluent

Ilias

Hossain

Ngteni

et al. 2021

IJERPH

View full text Add to dashboard Cite

The present study was conducted to determine the potential of utilizing the FeSO4·7H2O waste from the titanium manufacturing industry as an effective coagulant for treating industrial effluent. In this study, the secondary rubber processing effluent (SRPE) was treated using ferrous sulfate (FeSO4·7H2O) waste from the titanium oxide manufacturing industry. The FeSO4·7H2O waste coagulation efficiency was evaluated on the elimination of ammoniacal nitrogen (NH3-N) and chemical oxygen demand (COD) from SRPE. The central composite design (CCD) of experiments was employed to design the coagulation experiments with varying coagulation time, coagulant doses, and temperature. The coagulation experiments were optimized on the optimal elimination of NH3-N and COD using response surface methodology (RSM). Results showed that coagulant doses and temperature significantly influenced NH3-N and COD elimination from SRPE. The highest NH3-N and COD removal obtained were 98.19% and 93.86%, respectively, at the optimized coagulation experimental conditions of coagulation time 70 min, coagulant doses 900 mg/L, and temperature 62 °C. The residual NH3-N and COD in treated SPRE were found below the specified industrial effluent discharge limits set by DoE, Malaysia. Additionally, the sludge generated after coagulation of SRPE contains essential plant nutrients. The present study’s finding showed that FeSO4·7H2O waste generated as an industrial byproduct in a titanium oxide manufacturing industry could be utilized as an eco-friendly coagulant in treating industrial effluent.

show abstract

Section: Resultsmentioning

confidence: 99%

Environmental Remediation Potential of Ferrous Sulfate Waste as an Eco-Friendly Coagulant for the Removal of NH3-N and COD from the Rubber Processing Effluent

Ilias

Hossain

Ngteni

et al. 2021

IJERPH

View full text Add to dashboard Cite

show abstract

“…For WWTPs or water resource recovery facilities (WRRFs), phosphorus recovery (like any other resource recovery) can be a trade-off between recovery efficiency, environmental impacts, and economic revenues from the final products. 41 The process / product perspective LCAs help WRRFs understand part of this trade-off.…”

Section: Discussionmentioning

confidence: 99%

Life Cycle Environmental Impacts of Wastewater-Derived Phosphorus Products: An Agricultural End-User Perspective

Lam

Solon

Jia

et al. 2022

Environ. Sci. Technol.

View full text Add to dashboard Cite

Recovering phosphorus from wastewater in more concentrated forms has potential to sustainably recirculate phosphorus from cities to agriculture. The environmental sustainability of wastewater-based phosphorus recovery processes or wastewater-derived phosphorus products can be evaluated using life cycle assessment (LCA). Many LCA studies used a process perspective to account for the impacts of integrating phosphorus recovery processes at wastewater treatment plants, while some used a product perspective to assess the impacts of producing wastewater-derived phosphorus products. We demonstrated the application of an end-user perspective by assessing life cycle environmental impacts of substituting half of the conventional phosphorus rock-based fertilizers used in three crop production systems with wastewater-derived phosphorus products from six recovery pathways (RPs). The consequential LCA results show that the substitution reduces global warming potential, eutrophication potential, ecotoxicity potential, and acidification potential of the assessed crop production systems in most RPs and scenarios. The end-user perspective introduced in this study can (i) complement with the process perspective and the product perspective to give a more holistic picture of environmental impacts along the “circular economy value chains” of wastewater-based resource recovery, (ii) enable systemwide assessment of wide uptake of wastewater-derived products, and (iii) draw attention to understanding the long-term environmental impacts of using wastewater-derived products.

show abstract

“…Some examples of SCP production from different streams are shown in Table 5. Phototrophic organisms, such as microalgae or purple phototrophic bacteria, appear as the best solution because of their high carbon yields and high nutrient capture potentials [59]. In the research work of Hülsen and colleagues [60], the capacities of microalgae and purple phototrophic bacteria to treat different agro-industrial wastewaters and to produce SCP were compared.…”

Section: Single Cell Proteinmentioning

confidence: 99%

Wastewater Valorization: Practice around the World at Pilot- and Full-Scale

Duque

Campo

Río

et al. 2021

IJERPH

View full text Add to dashboard Cite

Over the last few years, wastewater treatment plants (WWTPs) have been rebranded as water resource recovery facilities (WRRFs), which recognize the resource recovery potential that exists in wastewater streams. WRRFs contribute to a circular economy by not only producing clean water but by recovering valuable resources such as nutrients, energy, and other bio-based materials. To this aim, huge efforts in technological progress have been made to valorize sewage and sewage sludge, transforming them into valuable resources. This review summarizes some of the widely used and effective strategies applied at pilot- and full-scale settings in order to valorize the wastewater treatment process. An overview of the different technologies applied in the water and sludge line is presented, covering a broad range of resources, i.e., water, biomass, energy, nutrients, volatile fatty acids (VFA), polyhydroxyalkanoates (PHA), and exopolymeric substances (EPS). Moreover, guidelines and regulations around the world related to water reuse and resource valorization are reviewed.

show abstract

From wastewater to fertilizer products: Alternative paths to mitigate phosphorus demand in European countries

Cited by 46 publications

References 87 publications

Environmental Remediation Potential of Ferrous Sulfate Waste as an Eco-Friendly Coagulant for the Removal of NH3-N and COD from the Rubber Processing Effluent

Environmental Remediation Potential of Ferrous Sulfate Waste as an Eco-Friendly Coagulant for the Removal of NH3-N and COD from the Rubber Processing Effluent

Life Cycle Environmental Impacts of Wastewater-Derived Phosphorus Products: An Agricultural End-User Perspective

Wastewater Valorization: Practice around the World at Pilot- and Full-Scale

Contact Info

Product

Resources

About