Results 21 to 30 of about 121,335 (260)

Reducing Chemical Fertilizer Application in Greenhouse Vegetable Cultivation under Different Residual Levels of Nutrient

open access: yesAgriculture, 2023
Excessive chemical fertilizer application in greenhouse vegetable cultivation results in environmental risks and residual nutrients in the soil. Conventional plot experiments conducted in one field cannot recommend fertilizer reduction to farmers when ...
Nannan Zhou   +4 more
doaj   +1 more source

Recovery of agricultural nutrients from biorefineries

open access: yesBioresource Technology, 2016
This review lays the foundation for why nutrient recovery must be a key consideration in design and operation of biorefineries and comprehensively reviews technologies that can be used to recover an array of nitrogen, phosphorus, and/or potassium-rich products of relevance to agricultural applications.
Carey, Daniel Elliott   +3 more
openaire   +3 more sources

Integrating Pyrolysis or Combustion with Scrubbing to Maximize the Nutrient and Energy Recovery from Municipal Sewage Sludge

open access: yesRecycling, 2021
Based on mass and energy balance calculations, this work investigates the possibility of recovering heat and nutrients (nitrogen and phosphorus) from municipal sewage sludge using pyrolysis or combustion in combination with a gas scrubbing technology ...
Ali Saud   +3 more
doaj   +1 more source

Sewage Sludge Treatment by Hydrothermal Carbonization: Feasibility Study for Sustainable Nutrient Recovery and Fuel Production

open access: yesEnergies, 2021
Phosphorus recovery from waste biomass is becoming increasingly important, given that phosphorus is an exhaustible non-renewable resource. For the recovery of plant nutrients and production of climate-neutral fuel from wet waste streams, hydrothermal ...
Gabriel Gerner   +4 more
doaj   +1 more source

A mechanistic model for electrochemical nutrient recovery systems [PDF]

open access: yesWater Research, 2016
Electrochemical membrane technologies such as electrodialysis have been identified as key technologies to enable nutrient recovery from wastewater. However, current electrochemical models are focused on simpler solutions than wastewater and omit key outputs such as pH, or total cell potential.
Emma Thompson Brewster   +3 more
openaire   +5 more sources

Hydrothermal Carbonization of Sewage Sludge: New Improvements in Phosphatic Fertilizer Production and Process Water Treatment Using Freeze Concentration

open access: yesEnergies, 2023
In recent years, promising developments in the hydrothermal carbonization (HTC) of sewage sludge, as well as the potential to reclaim phosphorus and nitrogen, have emerged.
Gabriel Gerner   +9 more
doaj   +1 more source

Natural freeze concentration of wastewater for nutrient recovery

open access: yesCold Regions Science and Technology, 2022
Water and food are vital needs for all humans and animals living on the earth, and intensive crop cultivation that requires plentiful nutrients and water has evolved to meet food production demands. As population grows and the supply of raw material nutrient deposits and clean water begin to run out, effective recycling becomes increasingly important ...
Miia John   +3 more
openaire   +1 more source

Cyanobacterial Growth in Minimally Amended Anaerobic Digestion Effluent and Flue-Gas

open access: yesMicroorganisms, 2019
Anaerobic digestion (AD) is an important industrial process, particularly in a biorefinery approach. The liquid effluent and carbon dioxide in the off-gas, can be used to produce high-value products through the cultivation of cyanobacteria.
Talita Beyl   +2 more
doaj   +1 more source

Recycling Phosphorus from Agricultural Streams: Grey and Green Solutions

open access: yesAgronomy, 2022
Many intensively farmed soils show high phosphorus (P) contents compared to the thresholds required for agricultural production; 0.084 Mt of P year−1 is leaving the European terrestrial system.
Nicolò Auteri   +2 more
doaj   +1 more source

A modelling approach to prepare synthetic urine for struvite precipitation studies

open access: yesWater Science and Technology, 2023
Nutrient recovery from wastewater is an effective strategy to prevent eutrophication and provide value for the treatment process. Human urine is a small but highly nutrient-rich stream in the total flux of domestic wastewater from which struvite ...
Saeede Soltani   +2 more
doaj   +1 more source

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