Sustainable use of sewage sludge in acid soils within a circular economy perspective

CATENA ◽  
2017 ◽  
Vol 149 ◽  
pp. 341-348 ◽  
Author(s):  
Rosa Mosquera-Losada ◽  
Alberto Amador-García ◽  
Nieves Muñóz-Ferreiro ◽  
José Javier Santiago-Freijanes ◽  
Nuria Ferreiro-Domínguez ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Circular Economy ◽  
Sustainable Use ◽  
Acid Soils

scholarly journals Scenario Analysis for Selecting Sewage Sludge-to-Energy/Matter Recovery Processes

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 276
Author(s):  
Francesco Facchini ◽  
Giovanni Mummolo ◽  
Micaela Vitti
Keyword(s):  
Sewage Sludge ◽  
Scenario Analysis ◽  
Value Chain ◽  
Circular Economy ◽  
Solid Material ◽  
Sludge Treatment ◽  
Sewage Sludges ◽  
Recovery Processes ◽  
Sewage Sludge Treatment ◽  
New Perspective

The sewage sludges are the byproducts of the wastewater treatment. The new perspective of the wastewater value chain points to a sustainable circular economy approach, where the residual solid material produced by sewage sludge treatments is a resource rather than a waste. A sewage sludge treatment system consists of five main phases; each of them can be performed by different alternative processes. Each process is characterized by its capability to recover energy and/or matter. In this paper, a state of the art of the sludge-to-energy and sludge-to-matter treatments is provided. Then, a scenario analysis is developed to identify suitable sewage sludge treatments plants that best fit the quality and flowrate of sewage sludge to be processed while meeting technological and economic constraints. Based on the scientific literature findings and experts’ opinions, the authors identify a set of reference initial scenarios and the corresponding best treatments’ selection for configuring sewage sludge treatment plants. The scenario analysis reveals a useful reference technical framework when circular economy goals are pursued. The results achieved in all scenarios ensure the potential recovery of matter and/or energy from sewage sludges processes.

scholarly journals Implications for Sustainability of the Joint Application of Bioeconomy and Circular Economy: A Worldwide Trend Study

2021 ◽  
Vol 13 (13) ◽  
pp. 7182
Author(s):  
Emilio Abad-Segura ◽  
Ana Batlles-delaFuente ◽  
Mariana-Daniela González-Zamar ◽  
Luis Jesús Belmonte-Ureña
Keyword(s):  
Environmental Sustainability ◽  
Circular Economy ◽  
Sustainable Use ◽  
Integrated Approach ◽  
Green Economy ◽  
Economic Knowledge ◽  
Joint Application ◽  
Bibliometric Review ◽  
State Of Research ◽  
The Impact

The joint application of bioeconomy (BE) and circular economy (CE) promotes the sustainable use of natural resources, since by applying a systemic approach, it improves the efficiency of these resources and reduces the impact on the environment. Both strategies, which belong to the area of green economy, provide a global and integrated approach towards environmental sustainability, as regards the extraction of biological materials, the protection of biodiversity and even the primary function of food production in agriculture. The objective was to analyze the implications for sustainability of BE and CE joint application. A systematic and bibliometric review has been applied to a sample of 1961 articles, selected from the period 2004–May 2021. A quantitative and qualitative advance is observed in this field of study. The expansion of scientific production is due to its multidisciplinary nature, since it implies technical, environmental and economic knowledge. The main contribution of this study is to understand the state of research on the implications for sustainability that BE and CE have when combined, in relation to their evolution, the scientific collaboration between the main driving agents, and the identification of the main lines of research developed.

scholarly journals Fruit Seeds as Sources of Bioactive Compounds: Sustainable Production of High Value-Added Ingredients from By-Products within Circular Economy

Molecules ◽  
2019 ◽  
Vol 24 (21) ◽  
pp. 3854 ◽  
Author(s):  
Fidelis ◽  
Moura ◽  
Kabbas Junior ◽  
Pap ◽  
Mattila ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Circular Economy ◽  
Raw Materials ◽  
Scale Up ◽  
Sustainable Use ◽  
Value Added ◽  
Water Soluble ◽  
Lipophilic Compounds

The circular economy is an umbrella concept that applies different mechanisms aiming to minimize waste generation, thus decoupling economic growth from natural resources. Each year, an estimated one-third of all food produced is wasted; this is equivalent to 1.3 billion tons of food, which is worth around US$1 trillion or even $2.6 trillion when social and economic costs are included. In the fruit and vegetable sector, 45% of the total produced amount is lost in the production (post-harvest, processing, and distribution) and consumption chains. Therefore, it is necessary to find new technological and environmentally friendly solutions to utilize fruit wastes as new raw materials to develop and scale up the production of high value-added products and ingredients. Considering that the production and consumption of fruits has increased in the last years and following the need to find the sustainable use of different fruit side streams, this work aimed to describe the chemical composition and bioactivity of different fruit seeds consumed worldwide. A comprehensive focus is given on the extraction techniques of water-soluble and lipophilic compounds and in vitro/in vivo functionalities, and the link between chemical composition and observed activity is holistically explained.

scholarly journals Biochar production from sewage sludge and microalgae mixtures: properties, sustainability and possible role in circular economy

2019 ◽  
Author(s):  
Silvia Bolognesi ◽  
Giorgia Bernardi ◽  
Arianna Callegari ◽  
Daniele Dondi ◽  
Andrea G. Capodaglio
Keyword(s):  
Sewage Sludge ◽  
Circular Economy

The effect of biosolids on cereals in central New South Wales, Australia. 1. Crop growth and yield

2005 ◽  
Vol 45 (4) ◽  
pp. 435 ◽  
Author(s):  
J. L. Cooper
Keyword(s):  
Sewage Sludge ◽  
Soil Ph ◽  
New South ◽  
New South Wales ◽  
Acid Soils ◽  
Crop Growth ◽  
Growth And Yield ◽  
South Wales ◽  
Sludge Cake ◽  
Dewatered Sewage Sludge

Two forms of biosolids, with and without lime, were applied to acid soils at 2 sites in central New South Wales. Wheat and triticale were then grown on these sites to determine the effect of biosolids on crop growth and yield. The forms of biosolids used were dewatered sewage sludge cake, and N-Viro Soil which is a lime amended sewage sludge. Dewatered sewage sludge cake was applied at rates of 0, 6, 12 and 24 dry Mg/ha, and N-Viro soil at 0, 1.5, 3.0 and 4.5 dry Mg/ha. Biosolids produced grain yield increases of over 50% at both sites, with the largest yield increases at the highest rate of dewatered sewage sludge. Continued cropping at 1 of the sites showed that significant yield increases were still obtained 3 years after the initial application. The addition of lime and N-Viro Soil raised soil pH, and produced small but long lasting yield increases. However, the main benefit of biosolids seems to have come from the nutrients they supplied rather than changes in soil pH.

scholarly journals Impact of globalisation on circular economy and sustainable development

2020 ◽  
Vol 74 ◽  
pp. 06018
Author(s):  
Iveta Máliková
Keyword(s):  
Economic Growth ◽  
Sustainable Development ◽  
Circular Economy ◽  
Slovak Republic ◽  
Raw Materials ◽  
Sustainable Use ◽  
Economic Cycle ◽  
Global Issues ◽  
Europe 2020 ◽  
Globalized World

Currently, the issues related to the global threats of the environment represent a special, increasingly more significant category of global issues. The main cause of the constantly changing conditions of the environment is the economic growth itself as it is closely connected to the growth of population, satisfaction of the man´s needs and a consequent increase in consumption. With the increase in consumption, there is an increase in the use of natural resources which we perceive as a usable resource that results in the transformation of raw materials into materials being used in the production of consumer goods. The energy used in the production, together with the reusable resources, is being later returned to the economic cycle in the form of waste. However, the way we currently use resources is not sustainable. To ensure sustainable development in the Slovak Republic, as well as in the whole European Union, we need to employ resources in a more inteligent, sustainable way. It is evident that the linear model of economic growth, that we relied on in the past, does not fullfill the needs of present, modern societies in the globalized world. The transition to a circular economy seems to be an appropriate system that can provide environmentally- and economically- sustainable use of available resources, and , thereby, being able to support the main objective within the Strategy for Smart, Sustainable and Inclusive Growth - Europe 2020.

scholarly journals Optimisation of the co-combustion of meat–bone meal and sewage sludge in terms of the quality produced ashes used as substitute of phosphorites

2020 ◽  
Author(s):  
Zygmunt Kowalski ◽  
Marcin Banach ◽  
Agnieszka Makara
Keyword(s):  
Sewage Sludge ◽  
Circular Economy ◽  
Combustion Process ◽  
Raw Material ◽  
Cadmium Content ◽  
Bone Meal ◽  
High Quality ◽  
Fluorine Compounds ◽  
Production Complex ◽  
Meat Bone Meal

Abstract To obtain a high-quality phosphorus raw material comparable in quality to the best phosphorites used in the fertiliser industry, an analysis was carried out to determine the optimal mass proportions of a meat–bone meal and sewage sludge mixture to be used in a co-combustion process. The ashes obtained contained hydroxyapatite that could be considered a high-quality substitute for phosphorites, with an average P2O5 content of 33.5%. These ashes do not contain fluorine compounds, cadmium content is at trace levels and they do not contain the radioactive compounds that are present in trace amounts in all phosphates. The developed process is an example of a production complex using cleaner technologies and circular economy principles on a microeconomic scale.

scholarly journals Circular Economy Practices among Industrial EMAS-Registered SMEs in Spain

2020 ◽  
Vol 12 (21) ◽  
pp. 9011
Author(s):  
Alexandra Barón ◽  
Rudi de Castro ◽  
Gerusa Giménez
Keyword(s):  
Environmental Management ◽  
European Union ◽  
Circular Economy ◽  
Sustainable Use ◽  
Environmental Management System ◽  
Use Of Resources ◽  
Production Processes ◽  
Main Driver ◽  
The Eu ◽  
Internal Production

The Eurobarometer report from December 2019 revealed that 80% of European Union (EU) citizens believe that industry is doing too little to protect the environment and that more work needs to be done to help companies transition to a more sustainable economic model. In recent years, the EU has made the Circular Economy (CE) a priority, and an environmental management system based on the EMAS Regulation can help companies achieve this goal by assisting them in analysing and measuring an efficient and sustainable use of resources. Thus, this study analyses EMAS companies’ environmental statements in order to identify and quantify the CE practices they have implemented. Findings identify 23 circular practices and show that the majority of companies focus their efforts on reducing emissions by optimizing the materials cycle and improving internal production processes. Eco-design stands out as the main driver amongst the circular transformation practices. This study has also detected a lack of uniformity in the way companies quantify the various circular practices currently operating, or how they communicate this information. These results may be useful to companies, professionals and administrations responsible for promoting the CE, and it can also provide guidance on what information to include in future environmental statements.

scholarly journals The Water‑wastewater‑sludge Sector and the Circular Economy

2018 ◽  
Vol 21 (4) ◽  
pp. 121-137 ◽  
Author(s):  
Danuta Lipińska
Keyword(s):  
Sewage Sludge ◽  
Circular Economy ◽  
Descriptive Analysis ◽  
National Level ◽  
Wastewater Sludge ◽  
Analysis And Evaluation ◽  
Central Statistical ◽  
Central Statistical Office ◽  
Development Goals ◽  
The Subject

The objective of this paper is a theoretical and empirical analysis and evaluation of the role, importance and opportunities of the water‑sewage‑sludge industry in the implementation of the circular economy. To realize this objective, a review of both the literature and the EU strategic documents concerning the subject of the study was conducted. The applied research method is a descriptive analysis based on available statistical data (Eurostat, EEA, EIO and the Polish Central Statistical Office) as well as on source materials. The theoretical part of the work presents the essence of the circular economy and the general characteristics of the analyzed sector, with a particular focus on the potential for the recovery of water from sewage and the reuse of wastewater, as well as the recovery of phosphorus from the wastewater treatment, processing and disposal of sewage sludge. The results of the study show that: (1) there are significant links between the development goals of the water‑sewage‑sludge sector and the circular economy. (2) it is necessary to seek and implement new solutions and technologies leading to the increased recovery of energy and biogens from sewage sludge. (3) there are still many barriers to the recycling of rainwater and graywater as well as to the reuse of wastewater. (4) the circular economy creates new opportunities for water‑sewage and sludge management at the local and national level.

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