Statistical entropy analysis as a proxy method for quantitative evaluation of phosphorus of a food-based bioethanol system

Wang, Xiuheng; Miao, Jingyu; You, Shijie; Ren, Nanqi

doi:10.1016/j.resconrec.2020.105125

Cited by 7 publications

(4 citation statements)

References 45 publications

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“…In the study of inorganic fertilizers, although there are many types of fertilizers, the three main nutrients required for crop growth are nitrogen (expressed as N), phosphorus (expressed as P 2 O 5 ), and potash (expressed as K 2 O) (www.fertilizer.org). These three nutrients support crop growth in different ways [32,33], and the absence of each of them has a direct effect on the reduction of crop yield. Here we will extract the content of each nutrient from each type of fertilizer and map the international trade networks for the three nutrients (N, P, and K).…”

Section: J Stat Mech (2023) 023401mentioning

confidence: 99%

Link stability analysis of temporal international fertilizer trade networks

Li¹,

Wang²,

Xie³

et al. 2023

J. Stat. Mech.

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Fertilizer availability is crucial for global food security, and international fertilizer trade plays a vital role in reallocating fertilizers across multiple economies. However, the stability of international fertilizer trade relationships between economies has not been studied. Using 29 year records of the global fertilizer trade from 1990 to 2018, we construct three temporal networks linked to three primary nutrients (nitrogen N, phosphorus P2O5, and potash K2O). After introducing the link stability indicator to the international fertilizer trade system, which shows a very strong positive correlation with whether the trade will continue in the future, we analyze the factors influencing the stability of the fertilizer trade and provide advice for trading participants to establish highly stable transactions. The supply side has a greater impact on the stability of the fertilizer trade than the demand side. For exporting economies, stable exports need to focus on the counterparty’s real demand rather than its economic situation. For importing economies, intermediaries and producers with good economic conditions are stable trading partners, and trade that is geographically closer is always more stable. The methodology used for link stability analysis in this work can be applied to analyzing other directed temporal networks.

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Section: J Stat Mech (2023) 023401mentioning

confidence: 99%

Link stability analysis of temporal international fertilizer trade networks

Li¹,

Wang²,

Xie³

et al. 2023

J. Stat. Mech.

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“…Statistical entropy analysis (SEA) , has been used to quantify the potential of a system to concentrate or dilute substances and flows of many materials using a single indicator. Laner et al extended the application of SEA to characterize the resource utilization efficiency of the P cycle in Austria, excluding mining, and concluded that higher utilization efficiency of P in the agriculture, food processing, and bioenergy industries and improved wastewater treatment benefited the P resource efficiency of Austria . SEA could facilitate the analysis of the long-term effectiveness of policies and recommendations − and thus enhance system thinking on the management of nutrients in the context of their environmental and socioeconomic impacts .…”

Section: Introductionmentioning

confidence: 99%

“…Laner et al extended the application of SEA to characterize the resource utilization efficiency of the P cycle in Austria, excluding mining, and concluded that higher utilization efficiency of P in the agriculture, food processing, and bioenergy industries and improved wastewater treatment benefited the P resource efficiency of Austria . SEA could facilitate the analysis of the long-term effectiveness of policies and recommendations − and thus enhance system thinking on the management of nutrients in the context of their environmental and socioeconomic impacts . China, which feeds ∼20% of the world’s population, mines over 40% of the global P and produces 35% of all P products, ranking first in the world .…”

Section: Introductionmentioning

confidence: 99%

Smoothing the Phosphorus Resource Stress under the Socioeconomic Development in China

Miao,

Wang,

Liu

et al. 2024

Environ. Sci. Technol.

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Phosphorus (P) is the key in maintaining food security and ecosystem functions. Population growth and economic development have increased the demand for phosphate rocks. China has gradually developed from zero phosphate mining to the world's leading P miner, fertilizer, and agricultural producer since 1949. China released policies, such as designating phosphate rock as a strategic resource, promoting eco-agricultural policies, and encouraging the use of solid wastes produced in mining and the phosphorus chemical industry as construction materials. However, methodological and data gaps remain in the mapping of the longterm effects of policies on P resource efficiency. Here, P resource efficiency can be represented by the potential of the P cycle to concentrate or dilute P as assessed by substance flow analysis (SFA) complemented by statistical entropy analysis (SEA). P-flow quantification over the past 70 years in China revealed that both resource utilization and waste generation peaked around 2015, with 20 and 11 Mt of mined and wasted P, respectively. Additionally, rapidly increasing aquaculture wastewater has exacerbated pollution. The resource efficiency of the Chinese P cycle showed a Ushaped change with an overall improvement of 22.7%, except for a temporary trough in 1975. The driving force behind the efficiency decline was the roaring phosphate fertilizer industry, as confirmed by the sharp increase in P flows for both resource utilization and waste generation from the mid-1960s to 1975. The positive driving forces behind the 30.7% efficiency increase from 1975 to 2018 were the implementation of the resource conservation policy, downstream pollution control, and, especially, the circular agro-food system strategy. However, not all current management practices improve the P resource efficiency. Mixing P industry waste with construction materials and the development of aquaculture to complement offshore fisheries erode P resource efficiency by 2.12% and 9.19%, respectively. With the promotion of a zero-waste society in China, effective P-cycle management is expected.

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“…Later, this method was adopted for predominantly inorganic/metallic materials streams, such as the European [29] and Chinese [30] copper cycle and the Austrian phosphorus cycle [31]. Other recent developments of SEA include the construction of a modified statistical entropy function to assess the recyclability of e-waste [32], linking SEA to exergy analysis applied to a crushed lithium-ion battery lab scale sieving experiment [33] and the introduction of mass joint entropy as an indicator together with a combination of SEA with substance flow analysis to evaluate phosphorus management in a food-based bioethanol system [34]. However, for a decade, the method was only applied to individual substances, limiting its applicability.…”

Section: Introductionmentioning

confidence: 99%

Extending Multilevel Statistical Entropy Analysis towards Plastic Recyclability Prediction

et al. 2021

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Multilevel statistical entropy analysis (SEA) is a method that has been recently proposed to evaluate circular economy strategies on the material, component and product levels to identify critical stages of resource and functionality losses. However, the comparison of technological alternatives may be difficult, and equal entropies do not necessarily correspond with equal recyclability. A coupling with energy consumption aspects is strongly recommended but largely lacking. The aim of this paper is to improve the multilevel SEA method to reliably assess the recyclability of plastics. Therefore, the multilevel SEA method is first applied to a conceptual case study of a fictitious bag filled with plastics, and the possibilities and limitations of the method are highlighted. Subsequently, it is proposed to extend the method with the computation of the relative decomposition energies of components and products. Finally, two recyclability metrics are proposed. A plastic waste collection bag filled with plastic bottles is used as a case study to illustrate the potential of the developed extended multilevel SEA method. The proposed extension allows us to estimate the recyclability of plastics. In future work, this method will be refined and other potential extensions will be studied together with applications to real-life plastic products and plastic waste streams.

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Statistical entropy analysis as a proxy method for quantitative evaluation of phosphorus of a food-based bioethanol system

Cited by 7 publications

References 45 publications

Link stability analysis of temporal international fertilizer trade networks

Link stability analysis of temporal international fertilizer trade networks

Smoothing the Phosphorus Resource Stress under the Socioeconomic Development in China

Extending Multilevel Statistical Entropy Analysis towards Plastic Recyclability Prediction

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