The characteristics of oestrone mobility in water and soil by the addition of Ca-biochar and Fe–Mn-biochar derived from Litchi chinensis Sonn.

Tao, Huanyu; Ge, Hui; Shi, Jianghong; Liu, Xiaowei; Guo, Wei; Zhang, Mengtao; Meng, Yaobin; Li, Xiaoyan

doi:10.1007/s10653-019-00477-2

Cited by 19 publications

(8 citation statements)

References 52 publications

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“…The improved electron density of the benzene ring enables it to function as a powerful e − giver; at highly acidic pH (pH ≤ 2), the hydroxyl and ketonic functional groups are protonated, and the SE is in their cationic form. 92 The findings above corroborate the findings of other researchers who have equally accentuated that interactions occur between the phenolic moiety of SE and the e − acceptor groups tied to adsorbent, 95,104,105 and this results in efficacious adsorption.…”

Section: Adsorption Technique For the Removal Of Ses In Watersupporting

confidence: 89%

“…11, both the modified and unmodified BC showed parallel adsorption kinetic profiles for the removal of E1, but the best adsorption efficiency of 91.50% was achieved by Fe–Mn BC in 2 hours, which was much better than the one achieved by BC (60.1%) and Ca-BC (73.2%). It was accentuated that Fe and Mn can oxidize the reducing entities on the BC surface, which may be the main reason for their high surface area and more adsorption sites, yielding outstanding performance 95,96 in their SE adsorption experiment used N -propyl functionalized spherical mesoporous silica to accomplish improved and selective sorption of E1, E2, and EE2. In this study, apart from the fundamental function of hydrophobic interaction, the input of the carbonylic lone pair e − on Carbon 17 of E1 was pragmatically confirmed to create stronger H-bonding with silicon OH and boosted the dipole–dipole interaction between E1 and the adsorbent than E2 and EE2.…”

Section: Adsorption Technique For the Removal Of Ses In Watermentioning

confidence: 99%

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Sequestration of steroidal estrogen in aqueous samples using an adsorption mechanism: a systemic scientometric review

et al. 2023

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Section: Adsorption Technique For the Removal Of Ses In Watersupporting

confidence: 89%

Section: Adsorption Technique For the Removal Of Ses In Watermentioning

confidence: 99%

Sequestration of steroidal estrogen in aqueous samples using an adsorption mechanism: a systemic scientometric review

et al. 2023

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“…In equilibrium isotherm studies, the experimental data follow different models depending on the type of BC and the EE considered ( Table 7 ). In some studies, the Freundlich equation is the best fit for BPA [ 52 , 116 , 117 ], OP and NP [ 118 ], E1 [ 53 , 91 ], E2 [ 101 ] and EE2 [ 50 , 119 ] adsorption on BC. The Freundlich-type model is appropriate for adsorbents featuring heterogeneous surface and when solute molecules interact with each other and form a multilayer coverage on the adsorbent.…”

Section: Sorptive Removal Of Estrogens By Biosorbentsmentioning

confidence: 99%

Recent Advances on Innovative Materials from Biowaste Recycling for the Removal of Environmental Estrogens from Water and Soil

Loffredo

2022

Materials

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New technologies have been developed around the world to tackle current emergencies such as biowaste recycling, renewable energy production and reduction of environmental pollution. The thermochemical and biological conversions of waste biomass for bioenergy production release solid coproducts and byproducts, namely biochar (BC), hydrochar (HC) and digestate (DG), which can have important environmental and agricultural applications. Due to their physicochemical properties, these carbon-rich materials can behave as biosorbents of contaminants and be used for both wastewater treatment and soil remediation, representing a valid alternative to more expensive products and sophisticated strategies. The alkylphenols bisphenol A, octylphenol and nonylphenol possess estrogenic activity comparable to that of the human steroid hormones estrone, 17β-estradiol (and synthetic analog 17α-ethinyl estradiol) and estriol. Their ubiquitous presence in ecosystems poses a serious threat to wildlife and humans. Conventional wastewater treatment plants often fail to remove environmental estrogens (EEs). This review aims to focus attention on the urgent need to limit the presence of EEs in the environment through a modern and sustainable approach based on the use of recycled biowaste. Materials such as BC, HC and DG, the last being examined here for the first time as a biosorbent, appear appropriate for the removal of EEs both for their negligible cost and continuously improving performance and because their production contributes to solving other emergencies, such as virtuous management of organic waste, carbon sequestration, bioenergy production and implementation of the circular economy. Characterization of biosorbents, qualitative and quantitative aspects of the adsorption/desorption process and data modeling are examined.

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“…These alkaline substances dissolve and compete with As for the adsorption sites, resulting in As activation in soil. When the modified BC were employed in the soil remediation, the leaching of iron or manganese would cause the acidification of soil (TAO et al, 2019). Herein, the soil pH exhibited varying degrees of decrease after the application of modified BC (ranging from 6.55 to 5.66).…”

Section: Changes Of Soil Propertiesmentioning

confidence: 94%

Simultaneous immobilization of lead, cadmium and arsenic in soil by iron-manganese modified biochar

Yang,

Zeng,

Liu

et al. 2023

Front. Environ. Sci.

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Cationic lead/cadmium and anionic arsenic exhibit opposite geochemical behaviors in soils, which makes the synchronous remediation of As, Cd, and Pb challenging. In this study, we developed an iron-manganese modified biochar (BC-Fe-Mn) that prepared from straw with iron (Fe) and manganese (Mn) loading at a pyrolysis temperature of 550 °C. After BC-Fe-Mn immobilization for 90 days, the simultaneous immobilization efficiency of Pb, Cd, and As reached 57%, 51%, and 35%, respectively. Speciation distributions shows that As transformed from specific bound state into weakly low crystallinity iron bound state. Cd transformed from carbonate fraction into Fe-Mn oxide bound fraction, and Pb transformed from carbonate fraction into residual state. During the procedure, simultaneous immobilization mechanisms might involve heavy metal morphological transformation, precipitation/co-precipitation, and surface complexation. Cd and Pb absorbed onto BC-Fe-Mn. Then the increased free iron oxides (Fed) reacted with the dissolved As to form iron-arsenic precipitation. The results show that BC-Fe-Mn is a promising material for the simultaneous immobilization of Pb, Cd, and As in multi-metal contaminated soil.

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The characteristics of oestrone mobility in water and soil by the addition of Ca-biochar and Fe–Mn-biochar derived from Litchi chinensis Sonn.

Cited by 19 publications

References 52 publications

Sequestration of steroidal estrogen in aqueous samples using an adsorption mechanism: a systemic scientometric review

Sequestration of steroidal estrogen in aqueous samples using an adsorption mechanism: a systemic scientometric review

Recent Advances on Innovative Materials from Biowaste Recycling for the Removal of Environmental Estrogens from Water and Soil

Simultaneous immobilization of lead, cadmium and arsenic in soil by iron-manganese modified biochar

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