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Agronomy
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New Advances on Nutrient Recovery from Municipal, Agro-Industrial and Livestock...
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New Advances on Nutrient Recovery from Municipal, Agro-Industrial and Livestock Wastes for Sustainable Farming 2.0

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Farming Sustainability".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 4138

Special Issue Editors

Dr. Mirko Cucina

E-Mail Website
Guest Editor
Department Department of Agricultural and Environmental Sciences - Production, Landscape, Agroenergy, University of Milan, Via Celoria 2, 20133 Milano, Italy
Interests: organic waste treatment; biopolymers; emerging contaminants; anaerobic digestion; composting; sewage sludge; bioplastics degradation
Special Issues, Collections and Topics in MDPI journals
Dr. Luca Regni

E-Mail Website
Guest Editor
Department of Agricultural, Food and Environmental Sciences, University of Perugia, Borgo XX Giugno, 06121 Perugia, Italy
Interests: in vitro culture; micropropagation; tree crops; agricultural byproduct valorization; sustainable agriculture; C sequestration; salt stress
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Fertilizers are critical to increasing the yield of crops and central to modern agriculture. Today, mineral fertilizers derived from non-renewable sources are the most widely used fertilizers in agriculture, even if they can represent a threat for the environment and a high cost for farmers. Municipal, agro-industrial, and livestock wastes may be a sustainable source for the production of biobased fertilizers, which can represent low-cost and environmental friendly products. Different technologies are available to recover nutrients from organic wastes, but they are still not widespread on a large scale. The main limitations to nutrient recovery from agro-industrial and livestock wastes are related to negative characteristics of the waste streams (i.e., presence of emerging contaminants), technical issues in nutrient recovery, and limited knowledge on biobased fertilizer quality and effectiveness.

The aim of this Special Issue is to advance our knowledge on cutting-edge research in the (i) analysis of agro-industrial and livestock wastes streams and potential for nutrient recovery and supply, (ii) technologies for nutrients recovery, (iii) quality of biobased fertilizers, (iv) laboratory and field assessment of biobased fertilizers, and (v) future challenges in nutrient recovery.

Original research articles and concepts for review articles are invited.

Dr. Mirko Cucina
Dr. Luca Regni
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sustainability
  • recycling
  • organic waste
  • nutrient recovery
  • composting
  • anaerobic digestion
  • compost
  • digestate
  • biochar
  • sewage sludge

Published Papers (2 papers)

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Research

11 pages, 863 KiB  
Article
Struvite as a Sustainable Fertilizer in Mediterranean Soils
by Ana Pérez-Piqueres, Marta Ribó, Isabel Rodríguez-Carretero, Ana Quiñones and Rodolfo Canet
Agronomy 2023, 13(5), 1391; https://doi.org/10.3390/agronomy13051391 - 18 May 2023
Cited by 1 | Viewed by 1749
Abstract
Recycled sources of phosphorus (P) and nitrogen (N), such as struvite extracted from wastewater, have the potential to substitute conventional manufactured fertilizers and mitigate environmental problems such as water eutrophication or the depletion of non-renewable resources. This study aimed to evaluate the potential [...] Read more.
Recycled sources of phosphorus (P) and nitrogen (N), such as struvite extracted from wastewater, have the potential to substitute conventional manufactured fertilizers and mitigate environmental problems such as water eutrophication or the depletion of non-renewable resources. This study aimed to evaluate the potential of struvite as a nitrogenous and phosphate fertilizer in the Spanish Mediterranean region. Two experiments were carried out using struvite recovered from sewage sludge and different representative soils from the area. Since knowing the rates at which their nutrients are released is key for efficient use, experiment I determined the struvite N-releasing rate for 16 weeks. Experiment II studied the effect of different struvite doses (50, 100, 200 kg P2O5 ha−1) on crop growth compared to superphosphate + ammonium nitrate. The results indicated N-releasing rates that fall in line with a slow-release fertilizer. More than 20% of applied struvite-N was unavailable for plants or in the longer term, which suggests struvite fractionation as the most efficient application method. Struvite showed similar fertilization capacity, which was even better at some points, than conventional mineral fertilization, plus adequate plant growth and good nutrient concentration at the 50 kg P2O5 ha−1 dose. Based on this study, struvite can be considered an interesting and effective option for sustainable fertilization in the Mediterranean region. Full article
(This article belongs to the Special Issue New Advances on Nutrient Recovery from Municipal, Agro-Industrial and Livestock Wastes for Sustainable Farming 2.0)
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13 pages, 310 KiB  
Article
Sewage Sludge Ash-Based Biofertilizers as a Circular Approach to Phosphorus: The Issue of Fe and Al in Soil and Wheat and Weed Plants
by Magdalena Jastrzębska, Marta K. Kostrzewska and Agnieszka Saeid
Agronomy 2022, 12(6), 1475; https://doi.org/10.3390/agronomy12061475 - 19 Jun 2022
Viewed by 1894
Abstract
Sewage sludge management for fertilizer purposes can be a step in the circular phosphorus (P) economy. Using microbial solubilization in manufacturing fertilizers from recycled materials is an innovative approach with the potential to increase P compounds’ bioavailability, and fertilizers from sewage sludge ash [...] Read more.
Sewage sludge management for fertilizer purposes can be a step in the circular phosphorus (P) economy. Using microbial solubilization in manufacturing fertilizers from recycled materials is an innovative approach with the potential to increase P compounds’ bioavailability, and fertilizers from sewage sludge ash and P-solubilizing bacteria are promising products of this technology. In addition to P and a range of macronutrients, these fertilizers contain small amounts of micronutrients and potentially toxic elements. This paper discusses the effects of fertilizer on iron (Fe) and aluminum (Al) content in soil, test plants (spring or winter wheat; grain and straw), weeds and post-harvest residues, based on field experiments. Treatments with conventional P fertilizers (superphosphate, phosphorite) and without P fertilization provided references. The tested biofertilizers containing the Bacillus megaterium or Acidithiobacillus ferrooxidans strain had no effect on total Fe and Al content in the soil or on the concentration of these elements in plant biomass when applied at P doses up to 35.2 kg ha–1. Fe and Al levels in grain did not suggest a potential risk to consumers. Full article
(This article belongs to the Special Issue New Advances on Nutrient Recovery from Municipal, Agro-Industrial and Livestock Wastes for Sustainable Farming 2.0)
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