Commercial silicate phosphate sequestration and desorption leads to a gradual decline of aquatic systems

Svatos, Karl B

doi:10.1007/s11356-017-0846-9

Cited by 6 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The methods used for machine learning and statistical modeling (Tan et al., 2021; Yu et al., 2021) implemented here have previously been described (Ahmed et al., 2019; Recaldes et al., 2020; Svatos, 2021). The theory behind the installation and configuration of such implementations for environmental simulation has also previously been described (Svatos, 2018). Briefly, the two complementary methods were set up and preconfigured to be remotely accessible from a remote secure shell terminal.…”

Section: Methodsmentioning

confidence: 99%

Heuristics‐enhanced geospatial machine learning (SaaS) of an ancient Mediterranean environment

Svatos

Ahmed

Recaldes

et al. 2022

Soil Science Soc of Amer J

Self Cite

View full text Add to dashboard Cite

Raw soil core physical data used in machine learning algorithms with corresponding spatial remotely sensed data is an emerging science. Using data derived from soil core samples previously collected in Universal Transverse Mercator zone 50 (Western Australia) and remotely sensed data, a model that predicted ground movement (GM) was developed specific to Australian Standards manual AS 1726-2017. This is the first approach for Australian soils and first in the world for soils older than 200 million yr. The model developed reliably predicted GM with 91.1% accuracy. The error obtained from the prediction is within acceptable limits currently used by engineers in calculations concerning soil classification for engineering purposes. Concerning the remotely sensed data analyzed, accuracy of the Atterberg limits method might be improved if additional information about soil structure (layering and horizon) or other variables (seasonal data) are built into this model. This model can be used to save on construction material costs, reduce the potential for human error associated with data collection and sample manipulation, but also fast-track (by up to 6 wk based on current wait times) building approvals while ensuring compliance to the relevant legislation. This platform also reduces the environmental effects of invasive drilling techniques. A requirement within principles of sustainable building practices, and associated with current standards commonly used by structural engineers who may seek better understanding of soil properties in Australia as a software service (with application potential in North America).

show abstract

Section: Methodsmentioning

confidence: 99%

Heuristics‐enhanced geospatial machine learning (SaaS) of an ancient Mediterranean environment

Svatos

Ahmed

Recaldes

et al. 2022

Soil Science Soc of Amer J

Self Cite

View full text Add to dashboard Cite

show abstract

“…Besides its ability to bind to iron mineral surfaces, phosphate is able to bind to other mineral surfaces such as kaolinite [234], silicates [235][236][237][238][239], and clay minerals [240][241][242][243][244], which are often present in iron ores as associated gangue minerals.…”

Section: Factors Influencing Phosphate Adsorption To Mineral (Iron Oxmentioning

confidence: 99%

Technological Challenges of Phosphorus Removal in High-Phosphorus Ores: Sustainability Implications and Possibilities for Greener Ore Processing

Ofoegbu

2019

Sustainability

View full text Add to dashboard Cite

With the present rates of iron ore consumption, currently unusable, high-phosphorus iron ore deposits are likely to be the iron ores of the future as higher-grade iron ore reserves are depleted. Consequently, the design and timely development of environmentally-benign processes for the simultaneous beneficiation of high-phosphorus iron ores and phosphorus recovery, currently a technological challenge, might soon become a sustainability challenge. To stimulate interest in this area, phosphorus adsorption and association in iron oxides/hydroxyoxides, and current efforts at its removal, have been reviewed. The important properties of the most relevant crystalline phosphate phases in iron ores are highlighted, and insights provided on plausible routes for the development of sustainable phosphorus recovery solutions from high-phosphorus iron ores. Leveraging literature information from geochemical investigations into phosphorus distribution, speciation, and mobility in various natural systems, key knowledge gaps that are vital for the development of sustainable phosphorus removal/recovery strategies and important factors (white spaces) not yet adequately taken into consideration in current phosphorus removal/recovery solutions are highlighted, and the need for their integration in the development of future phosphorus removal/recovery solutions, as well as their plausible impacts on phosphorus removal/recovery, are put into perspective.

show abstract

“…BaraClear ® 25-55 [24] We previously developed an effective P adsorbent, lanthanum/aluminium hydroxide composite (LAH), which has a P adsorption capability 5-8 times higher than Phoslock ® [26]. However, like other new P adsorbent demonstration experiments [27], the P adsorption capability has been tested in small-scale experiments using water samples with high P concentrations of 30 mg/L or above [11,14].…”

Section: Introductionmentioning

confidence: 99%

Synergistic Recapturing of External and Internal Phosphorus for In Situ Eutrophication Mitigation

Pan

Lyu

Zhang

et al. 2019

Water

View full text Add to dashboard Cite

In eutrophication management, many phosphorus (P) adsorbents have been developed to capture P at the laboratory scale. Existing P removal practice in freshwaters is limited due to the lack of assessment of the possibility and feasibility of controlling P level towards a very low level (such as 10 μg/L) in order to prevent the harmful algal blooms. In this study, a combined external and internal P control approach was evaluated in a simulated pilot-scale river–lake system. In total, 0.8 m3 of simulated river water was continuously supplied to be initially treated by a P adsorption column filled with a granulated lanthanum/aluminium hydroxide composite (LAH) P adsorbent. At the outlet of the column (i.e., inlet of the receiving tanks), the P concentration decreased from 230 to 20 µg/L at a flow rate of 57 L/day with a hydraulic loading rate of 45 m/day. In the receiving tanks (simulated lake), 90 g of the same adsorbent material was added into 1 m3 water for further in situ treatment, which reduced and maintained the P concentration at 10 µg/L for 5 days. The synergy of external and internal P recapture was demonstrated to be an effective strategy for maintaining the P concentration below 10 µg/L under low levels of P water input. The P removal was not significantly affected by temperature (5–30 °C), and the treatment did not substantially alter the water pH. Along with the superior P adsorption capacity, less usage of LAH could lead to reduced cost for potation eutrophication control compared with other widely used P adsorbents.

show abstract

Commercial silicate phosphate sequestration and desorption leads to a gradual decline of aquatic systems

Cited by 6 publications

References 22 publications

Heuristics‐enhanced geospatial machine learning (SaaS) of an ancient Mediterranean environment

Heuristics‐enhanced geospatial machine learning (SaaS) of an ancient Mediterranean environment

Technological Challenges of Phosphorus Removal in High-Phosphorus Ores: Sustainability Implications and Possibilities for Greener Ore Processing

Synergistic Recapturing of External and Internal Phosphorus for In Situ Eutrophication Mitigation

Contact Info

Product

Resources

About