Recovery of phosphorus and other minerals from greenhouse wastewater generated during soilless tomato cultivation by means of alkalizing agents

Mielcarek, Artur; Jóźwiak, Tomasz; Rodziewicz, Joanna; Bryszewski, Kamil; Janczukowicz, Wojciech; Kalisz, Barbara; Tavares, Jorge Manuel Rodrigues

doi:10.1016/j.scitotenv.2023.164757

Cited by 7 publications

(10 citation statements)

References 35 publications

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“…For drainage water, past research indicates a significant impact of pH changes on phosphorus precipitation, particularly with calcium and magnesium ions. However, an alkalizing agent such as Ca(OH)2, KOH, or NH4OH needed to be added to DW to elevate its pH to above 7 [34]. In the present study, the used of the alkalizing agent was replaced For drainage water, past research indicates a significant impact of pH changes on phosphorus precipitation, particularly with calcium and magnesium ions.…”

Section: Phosphorus Calcium and Magnesiummentioning

confidence: 87%

“…In the present study, the used of the alkalizing agent was replaced For drainage water, past research indicates a significant impact of pH changes on phosphorus precipitation, particularly with calcium and magnesium ions. However, an alkalizing agent such as Ca(OH) 2 , KOH, or NH 4 OH needed to be added to DW to elevate its pH to above 7 [34]. In the present study, the used of the alkalizing agent was replaced by a natural alkalinity increase due to nitrate reduction.…”

Section: Phosphorus Calcium and Magnesiummentioning

confidence: 96%

“…At the same time, DW is effectively pre-treated upon the precipitation of mainly phosphorus with calcium and magnesium ions already at pH > 7.5 [33]. Although this is a desired effect, it poses many operational hurdles caused by installation clogging [34]. This calls for the need to use, among others, an organic substrate that would aid biotreatment processes and ensure long-term operation of the system, including the ion-exchange membranes in MFC.…”

Section: Introductionmentioning

confidence: 99%

“…In parallel, the phosphorus recovery from drainage water can reduce production costs by 9-719 €/d•ha. Additionally, the savings associated with the reuse of purified drainage water amount to ~16,139-33,352 €/year•ha [34].…”

Section: Introductionmentioning

confidence: 99%

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Energy Production in Microbial Fuel Cells (MFCs) during the Biological Treatment of Wastewater from Soilless Plant Cultivation

Mielcarek,

Bryszewski,

Kłobukowska

et al. 2024

Energies

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The management of drainage water (DW), which is produced during the soilless cultivation of plants, requires a high energy input. At the same time, DW is characterized by a high electrolytic conductivity, a high redox potential, and is also stable and putrefaction-free. In the present study, the natural properties of drainage water and a biotreatment method employing an external organic substrate in the form of citric acid (C/N 1.0, 1.5, 2.0) were utilized for energy recovery by a microbial fuel cell (MFC). The cathode chamber served as a retention tank for DW with a carbon felt electrode fixed inside. In turn, a biological reactor with biomass attached to the filling in the form of carbon felt served as the anode chamber. The filling also played the role of an electrode. The chambers were combined by an ion exchange membrane, forming an H letter-shaped system. They were then connected in an external electrical circuit with a resistance of 1k Ω. The use of a flow-through system eliminated steps involving aeration and mixing of the chambers’ contents. Citric acid was found to be an efficient organic substrate. The voltage of the electric current increased from 44.34 ± 60.92 mV to 566.06 ± 2.47 mV for the organic substrate dose expressed by the C/N ratio ranging from 1.0 to 2.0. At the same time, the denitrification efficiency ranged from 51.47 ± 9.84 to 95.60 ± 1.99% and that of dephosphatation from 88.97 ± 2.41 to 90.48 ± 1.99% at C/N from 1.0 to 2.0. The conducted studies confirmed the possibility of recovering energy during the biological purification of drainage water in a biofilm reactor. The adopted solution only required the connection of electrodes and tanks with an ion-selective membrane. Further research should aim to biologically treat DW followed by identification of the feasibility of energy recovery by means of MFC.

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Section: Phosphorus Calcium and Magnesiummentioning

confidence: 87%

Section: Phosphorus Calcium and Magnesiummentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Energy Production in Microbial Fuel Cells (MFCs) during the Biological Treatment of Wastewater from Soilless Plant Cultivation

Mielcarek,

Bryszewski,

Kłobukowska

et al. 2024

Energies

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“…Optimal P removal was reported when lime addition increased the pH from 8.6 to 9.0 [88]. Alkalization was also applied by Mielcarek et al [93] who demonstrated that the removal efficiency of phosphorus from greenhouse wastewater increased with pH increase and approximated 99% at pH 9. At the same time, calcium, magnesium, sulfur, manganese, and boron were removed from DW.…”

Section: Physicochemical and Biological Methods For The Final Managem...mentioning

confidence: 99%

Water Nutrient Management in Soilless Plant Cultivation versus Sustainability

Mielcarek,

Kłobukowska,

Rodziewicz

et al. 2023

Sustainability

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Under-cover soilless cultivation is an important technique of crop production. Due to the lack of contact with soil and precipitation, the root system of crops grown must be provided with water and all necessary nutrients in the form of a solution (nutrient medium). This nutrient medium needs to be fed in excess to ensure proper plant development and the expected qualitative and quantitative parameters of the crop yield, which means that in the case of, e.g., tomato cultivation, 20–80% of the supplied medium must be removed from the root system and managed. Uncontrolled discharge of this drainage water poses a significant threat to the environment, causing contamination of surface waters and groundwaters. The article presents the latest solutions for drainage water management as well as technologies and systems that allow saving water and fertilizers, and thus recovering elements. It also characterizes methods deployed for the treatment of overflow that enable its recirculation, its re-use for fertilization of other less demanding crops (including soil crops), and its final management in the form of a discharge to the natural environment. Due to depleting resources of adequate-quality water, increase in the prices of mineral fertilizers, and depletion of natural phosphorus deposits, the future trends in water and nutrients management in this cropping system aim at closing circuits of drainage water and recovering elements before their discharge into the natural environment. These measures are expected not only to protect the natural environment but also to reduce the costs of crop production.

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Phosphorus (P) recovery from corn biorefineries is promising for mitigating environmental impacts and promoting the P circular economy

You,

Li,

Chen

et al. 2023

Resources, Conservation and Recycling

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Recovery of phosphorus and other minerals from greenhouse wastewater generated during soilless tomato cultivation by means of alkalizing agents

Cited by 7 publications

References 35 publications

Energy Production in Microbial Fuel Cells (MFCs) during the Biological Treatment of Wastewater from Soilless Plant Cultivation

Energy Production in Microbial Fuel Cells (MFCs) during the Biological Treatment of Wastewater from Soilless Plant Cultivation

Water Nutrient Management in Soilless Plant Cultivation versus Sustainability

Phosphorus (P) recovery from corn biorefineries is promising for mitigating environmental impacts and promoting the P circular economy

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