Valorization of agricultural waste for biogas based circular economy in India: A research outlook

2020 ◽  
Vol 304 ◽  
pp. 123036 ◽  
Author(s):  
Rimika Kapoor ◽  
Pooja Ghosh ◽  
Madan Kumar ◽  
Subhanjan Sengupta ◽  
Asmita Gupta ◽  
...  
Keyword(s):  
Circular Economy ◽  
Agricultural Waste

scholarly journals Utilization of Polymer Concrete Composites for a Circular Economy: A Comparative Review for Assessment of Recycling and Waste Utilization

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2135
Author(s):  
Hatem Alhazmi ◽  
Syyed Adnan Raheel Shah ◽  
Muhammad Kashif Anwar ◽  
Ali Raza ◽  
Muhammad Kaleem Ullah ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Polymer Composite ◽  
Circular Economy ◽  
Agricultural Waste ◽  
High Strength ◽  
Supplementary Cementitious Materials ◽  
Polymer Concrete ◽  
Promising Alternative ◽  
Detailed Review ◽  
Comparative Review

Polymer composites have been identified as the most innovative and selective materials known in the 21st century. Presently, polymer concrete composites (PCC) made from industrial or agricultural waste are becoming more popular as the demand for high-strength concrete for various applications is increasing. Polymer concrete composites not only provide high strength properties but also provide specific characteristics, such as high durability, decreased drying shrinkage, reduced permeability, and chemical or heat resistance. This paper provides a detailed review of the utilization of polymer composites in the construction industry based on the circular economy model. This paper provides an updated and detailed report on the effects of polymer composites in concrete as supplementary cementitious materials and a comprehensive analysis of the existing literature on their utilization and the production of polymer composites. A detailed review of a variety of polymers, their qualities, performance, and classification, and various polymer composite production methods is given to select the best polymer composite materials for specific applications. PCCs have become a promising alternative for the reuse of waste materials due to their exceptional performance. Based on the findings of the studies evaluated, it can be concluded that more research is needed to provide a foundation for a regulatory structure for the acceptance of polymer composites.

scholarly journals A Practical Case Report on the Node Point of a Butterfly Model Circular Economy: Synthesis of a New Hybrid Mineral–Hydrothermal Fertilizer for Rice Cropping

2020 ◽  
Vol 12 (3) ◽  
pp. 1245
Author(s):  
Mei-Yun Chang ◽  
Wu-Jang Huang
Keyword(s):  
Case Report ◽  
Circular Economy ◽  
Agricultural Waste ◽  
Value Added ◽  
Waste Recycling ◽  
Practical Case ◽  
Node Point ◽  
A Value ◽  
Circular Design ◽  
Mineral Waste

With the increased importance of a circular economy in the world, in this paper we present a practical “butterfly model” (proposed by the Ellen MacArthur Foundation) case report: to gain extra benefits in rice cropping through hybridizing green products of mineral waste and agricultural waste recycling. Hydrothermal biorefinery was used to turn spent agricultural biomass into a value-added biomass nutrient solution (BNS). BNS and sericite mineral waste were mixed and used as a new hybrid mineral–hydrothermal fertilizer for rice cropping. The most important extra benefit of this new hybrid mineral–hydrothermal fertilizer was that the empty grains could be reduced to 1–4 grains/spike (normally, it is 12–18 grains/spike), without significantly decreasing the panicle weight or spike saturation. This case report provides a new logic for circular design at the “node” point of a butterfly diagram.

scholarly journals Stabilization and recycling of contaminated marine sediments

2019 ◽  
Vol 92 ◽  
pp. 11004 ◽  
Author(s):  
Francesco Todaro ◽  
Claudia Vitone ◽  
Michele Notarnicola
Keyword(s):  
Environmental Protection ◽  
Marine Sediments ◽  
Active Carbon ◽  
Circular Economy ◽  
Agricultural Waste ◽  
Environmental Issue ◽  
Geotechnical Characteristics ◽  
First Results ◽  
Interesting Solution ◽  
Contaminated Marine Sediments

The paper deals with the treatment and reuse of submarine sediments, i.e. a relevant environmental issue due to the annual huge quantities of dredged sediments (over half contaminated) in Europe. In a vision of sustainability and circular economy, stabilization and solidification (S/S) treatments represent an interesting solution for both environmental protection and reuse of sediments in engineering works. The investigation involved polluted clayey sediments taken up to depths of about 1.5m from the seafloor of the Gulf of Taranto (South of Italy). The research investigates the effects of a treatment with cement and lime enhanced by the addition of green additives, such as active carbon and biochar, for chemical remediation. The last one is a promising and cheap adsorbent material, that is the by-product of - mainly - agricultural waste pyrolysis. The first results suggest that appropriate mix designs and curing times could allow the reuse of sediments by both improving their geotechnical characteristics and making them environmentally acceptable in accordance to end-of-waste criteria.

scholarly journals The Opportunity of Valorizing Agricultural Waste, Through Its Conversion into Biostimulants, Biofertilizers, and Biopolymers

2021 ◽  
Vol 13 (5) ◽  
pp. 2710
Author(s):  
Debora Puglia ◽  
Daniela Pezzolla ◽  
Giovanni Gigliotti ◽  
Luigi Torre ◽  
Maria Luce Bartucca ◽  
...  
Keyword(s):  
Natural Resources ◽  
Circular Economy ◽  
Anthropogenic Activities ◽  
Agricultural Waste ◽  
Environmentally Friendly ◽  
Agricultural Systems ◽  
Synthetic Compounds ◽  
Excellent Opportunity ◽  
Review Reports ◽  
The Impact

The problems arising from the limited availability of natural resources and the impact of certain anthropogenic activities on the environment must be addressed as soon as possible. To meet this challenge, it is necessary, among other things, to reconsider and redesign agricultural systems to find more sustainable and environmentally friendly solutions, paying specific attention to waste from agriculture. Indeed, the transition to a more sustainable and circular economy should also involve the effective valorization of agricultural waste, which should be seen as an excellent opportunity to obtain valuable materials. For the reasons mentioned above, this review reports and discusses updated studies dealing with the valorization of agricultural waste, through its conversion into materials to be applied to crops and soil. In particular, this review highlights the opportunity to obtain plant biostimulants, biofertilizers, and biopolymers from agricultural waste. This approach can decrease the impact of waste on the environment, allow the replacement and reduction in the use of synthetic compounds in agriculture, and facilitate the transition to a sustainable circular economy.

PROCESSING OF AGRO-WASTES IN THE LIGHT OF CIRCULAR ECONOMY

2018 ◽  
Vol XIX (6) ◽  
pp. 73-78
Author(s):  
Alina Dereszewska ◽  
Stanisław Cytawa
Keyword(s):  
Circular Economy ◽  
Closed Loop ◽  
Agricultural Waste ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Primary Sludge ◽  
Sewage Treatment Plants ◽  
Biogas Plants ◽  
Principle Of Maximum ◽  
Agricultural Waste Management

The article discusses the procedures of agricultural waste management in the context of the principle of maximum closed loop for organic compounds. The concept of regional agro-waste economy is presented taking into account existing technological solutions including agricultural biogas plants as well as biogas plants located at sewage treatment plants. The biogas potential for agricultural waste co-fermented with primary sludge of the ‘Swarzewo’ wastewater treatment plant was estimated.

scholarly journals Analysis of the Circular Economic Production Models and Their Approach in Agriculture and Agricultural Waste Biomass Management

2020 ◽  
Vol 17 (24) ◽  
pp. 9549
Author(s):  
Mónica Duque-Acevedo ◽  
Luis Jesús Belmonte-Ureña ◽  
Natalia Yakovleva ◽  
Francisco Camacho-Ferre
Keyword(s):  
Circular Economy ◽  
Agricultural Waste ◽  
Biofuel Production ◽  
Waste Biomass ◽  
Scientific Publications ◽  
Economic Production ◽  
Production Models ◽  
Development Policies ◽  
Biomass Management ◽  
The Uk

As of now, circular economic production models of the circular economy (CEPMs), which include circular economy, bioeconomy, and circular bioeconomy, are among the main tools characterizing development policies in different countries. During the last five years, policies and strategies regarding CEPMs have promoted and contributed to the development of research on this topic. The evolution and most relevant aspects of the three CEPMs previously mentioned have been analyzed from a sample of 2190 scientific publications obtained from the Scopus database. Bibliometric analysis has been used to evaluate the approach of these models in agriculture and to introduce the ways in which they address the management of agricultural waste biomass (AWB). Results show that the circular economy is the most studied and prioritized model in China and most European countries, with the UK leading the way. Germany leads in topics related to the bioeconomy. The management policies and strategies of the circular bioeconomy are key to promoting research focused on AWB valorization since bioenergy and/or biofuel production continue to be a priority.

Strategic guidelines for the development of bioenergy potential of agricultural enterprises in the transition to a circular economy

2019 ◽  
pp. 144-151
Author(s):  
Ihor Yatsiv ◽  
Mykhaylo Stupen ◽  
Nadiya Pylypiv ◽  
Diana Shelenko
Keyword(s):  
Sustainable Development ◽  
Circular Economy ◽  
Business Models ◽  
Agricultural Sector ◽  
Agricultural Waste ◽  
Successful Implementation ◽  
Strategic Orientations ◽  
Circular Model ◽  
Long Run ◽  
Strategic Goals

Given the limited volume of natural resources and the trend towards population growth, the existing linear model of take-use-recycling economy needs rethinking. The idea that underlies the circular model of the economy, according to which goods of today are to become resources of tomorrow, is becoming increasingly relevant. Under these conditions, the agricultural sector must, first of all, ensuring food security, intensify the production of biomass as a renewable source of energy, since bioresources and biomass make up the highest share in agriculture. The article summarizes and proposes the strategic goals and guidelines for the development of the bioenergy component of agriculture. In Ukraine, a significant amount of biomass is produced annually, which is not used efficiently. Instead of addressing the needs of the energy sector, the lion’s share of waste is recovered through incineration, which in itself causes significant damage to the environment in general and the economy in particular. It has been researched that the potential of bioenergy largely depends on the geographical distribution and availability of existing waste and by-products on the one hand, and on the overall strategic orientations of the sector’s development on the other. The article analyzes the strategic goals of the rational use of agricultural waste for bioenergy production, which would certainly be economically viable and contribute to the sustainable development of the state’s economy. Strategic guidelines that are formulated in terms of the requirements and constraints of the circular economy are also offered. They are: 1) Use biomass that is obtained only on the basis of the principle of sustainability; 2) Promote the use of research, development and innovation at various stages; 3) Adhere to the principles of optimal use of bioresources; 4) Transformation of business models of players in the bioenergy market. Successful implementation of the circular business model in the agricultural sector must take into account the interests of all market participants, based on the principle of sustainable development. At the stage of transformation from a linear to a circular economy, the agricultural sector needs to change its existing business models in order to increase its innovation component, improve its logistics processes, develop a strategy for realizing its existing bioenergy potential and sustainable economic development in general. It should be understood that the benefits expected from the bioenergy sector are only possible in the long run.

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