Efficient recovery of phosphate from simulated urine by Mg/Fe bimetallic oxide modified biochar as a potential resource

Liu, Hongbo; Shan, Jinhua; Chen, Zhongbing; Lichtfouse, Éric

doi:10.1016/j.scitotenv.2021.147546

Cited by 68 publications

(16 citation statements)

References 51 publications

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“…At a global level, fruit and vegetable production is a key sector in bioeconomy and must be kept economically, socially, and environmentally sustainable [26]. In the fruit and vegetable sector, the development of new varieties is common, thus the efficiency in the use of fertilizers, organic amendments, water and energy, the integrated pest control systems, disease and weeds, as well as the precision agriculture are key [27] for both a better use and, especially, a reduction of the impact on sustainability in relation to the economic approach of the CE.…”

Section: Theoretical Framework: Circular Economy Applied To Agriculturementioning

confidence: 99%

An Evolutionary Approach on the Framework of Circular Economy Applied to Agriculture

et al. 2022

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In this current and global context led by scarcity of resources, environmental degradation, global climate change, and a progressive demand for food, the circular economy (CE) represents a key economic model or framework for sustainable, restorative, and regenerative agriculture. Hence, CE applied to agriculture seeks to close the life cycle of products, services, waste, water, and energy to obtain a better use of resources and a reduction of the ecological impact. An initial review of the literature corroborates the hypothesis that the CE framework has not yet been comprehensively adapted to the field of agriculture. This research seeks to overcome this gap in relation to the performance of the circularity of agricultural production systems in support of decision-making processes. A bibliometric analysis of 1060 documents was carried to synthesize the knowledge base on this topic. The results show recent studies that identify weaknesses derived from food production, such as waste generation, biomass, water pollution, and greenhouse gas emissions. It has been identified how their analysis has developed to date and what terms allow us to visualize new approaches; consequently, it is a useful tool for researchers and sponsors who provide financial resources for the development of new lines of research.

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Section: Theoretical Framework: Circular Economy Applied To Agriculturementioning

confidence: 99%

An Evolutionary Approach on the Framework of Circular Economy Applied to Agriculture

et al. 2022

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“…66 Also, in the Mg/Fe-pyrochar system, XPS analysis shows the conversion of M-O to M-OH, the substitution of hydroxyl groups with phosphate groups, and the formation of inner sphere complexes composed of metal atoms and phosphate molecules linked in mononuclear monodentate, mononuclear bidentate, and binuclear bidentate forms. 53 In particular, co-existing ions of different species and concentrations have little effect on phosphate adsorption, which is typically characteristic of inner sphere complexation. 72 (2) Electrostatic attraction.…”

Section: Remediation Mechanismsmentioning

confidence: 99%

“…Compared to pyrochar or hydrochar, the pH pzc of metal-modified pyrochar or hydrochar can be increased significantly, resulting in higher adsorption capacity within a wider pH range. 53 (3) Surface precipitation. Under certain conditions, the cations on the surface of metal-modified pyrochar or hydrochar combine with phosphate to form insoluble matter, Fe and Al react more readily with phosphate under acidic conditions, while Ca and Mg react in contrast.…”

Section: Remediation Mechanismsmentioning

confidence: 99%

“…In principle, the smaller the ionic radius and the higher the valency of metal cations, the more favorable it is for the metal-assembled pyrochar or hydrochar to bind the phosphate ion. 53 Using metal (hydrogen) oxides or minerals containing magnesium, iron, aluminum, and lanthanum assembled pyrochar or hydrochar for phosphorus recovery from wastewater is a popular issue.…”

Section: Thermochemical Conversion Products Derived From Biomass As P...mentioning

confidence: 99%

“…Compared to pyrochar or hydrochar, the pH pzc of metal-modified pyrochar or hydrochar can be increased significantly, resulting in higher adsorption capacity within a wider pH range. 53…”

Section: Thermochemical Conversion Products Derived From Biomass As P...mentioning

confidence: 99%

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Advances in biomass thermochemical conversion on phosphorus recovery: water eutrophication prevention and remediation

Lan

Gai

Cheng

et al. 2022

Environ. Sci.: Water Res. Technol.

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Phosphorus adsorption efficiency and characteristic analysis of basic oxygen furnace slag

Kuo

Kao

2023

Int J of Chemical Kinetics

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A large amount of furnace slag is produced from steelmaking every year. The resultant by‐products will severely damage the natural environment and ecosystems if not treated properly. Businesses worldwide have thus been striving for slag recycling and solving various complex problems. In this study, basic oxygen furnace slag (BOFS) was regarded as an adsorbent to adsorb phosphate in water. In addition to a physical–chemical property analysis of the by‐products, the present study explored the performance of basic oxygen furnace slag in adsorbing phosphorous (P) with different size settings, and observed the surface structure of fused basic oxygen furnace slag.The results revealed that free‐state Ca accounts for the majority in basic oxygen furnace slag content, demonstrating the removal of nearly all phosphorous in water. The results of Fourier‐transform infrared spectroscopy (FT‐IR) on basic oxygen furnace slag with >200 mesh size revealed complex wave crests at the fingerprint region (570–980 cm−1). The result signifies that the basic oxygen furnace slag samples comprise strong Si─O and O─Si─O bonds within silicate minerals. Moreover, basic oxygen furnace slag samples with a particle size >200 mesh contain very high content of lime (CaO) (reaching 49.5%). This property fully demonstrates that basic oxygen furnace slag samples in a small particle size were more active as an aggregate. This study found that the Langmuir adsorption isotherm model (R2 = 0.997) is slightly better than the Freundlich adsorption isotherm model (R2 = 0.984), which shows that the process in which basic oxygen furnace slag adsorbs P is monolayer adsorption, and the adsorption energy is more uniformly distributed among BOFS samples. This study also found that basic oxygen furnace slag samples melted at 1200°C can effectively encapsulate some heavy metal pollutants and form stable glassy slag. The change proved that a fused basic oxygen furnace slag sample could effectively encapsulate heavy metal pollutants and formed glassy‐state slag with high stability. This mechanism would reduce the likelihood of heavy metal leaching when basic oxygen furnace slag serves as a subgrade aggregate, permeable material, or concrete aggregate in the future.

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Efficient recovery of phosphate from simulated urine by Mg/Fe bimetallic oxide modified biochar as a potential resource

Cited by 68 publications

References 51 publications

An Evolutionary Approach on the Framework of Circular Economy Applied to Agriculture

An Evolutionary Approach on the Framework of Circular Economy Applied to Agriculture

Advances in biomass thermochemical conversion on phosphorus recovery: water eutrophication prevention and remediation

Phosphorus adsorption efficiency and characteristic analysis of basic oxygen furnace slag

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