Rapid Determination of Phosphogypsum in Soil Based by Infrared (IR) and Near-Infrared (NIR) Spectroscopy with Multivariate Calibration

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Industrial processing of phosphogypsum into organomineral fertilizer

Vera A. Matveeva et al.

Summary: The study found that utilizing phosphogypsum as the mineral component of an organic-mineral mixture, along with lignin sludge as the organic component, can effectively address the issue of industrial waste storage.

ENVIRONMENTAL GEOCHEMISTRY AND HEALTH (2022)

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Article Computer Science, Information Systems

Hypergraph regularized semi-supervised support vector machine

Yuting Sun et al.

Summary: In this paper, a hypergraph regularized semi-supervised support vector machine (HGSVM) algorithm is proposed to exploit the multivariate manifold structure. To accelerate the training process of HGSVM, a fast algorithm based boundary sample selection algorithm, termed fast-HGSVM, is developed. Moreover, two SMOTE-variant techniques and the one-vs-rest strategy are introduced in fast-HGSVM, and two multi-category semi-supervised algorithms called fast-ASHGSVM and fast-KSHGSVM are proposed. The effectiveness of the proposed algorithms is validated through experiments on two moons and UCI datasets.

INFORMATION SCIENCES (2022)

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Article Engineering, Environmental

An integrated multidisciplinary-based framework for characterizing environmental risks of heavy metals and their effects on antibiotic resistomes in agricultural soils

Yuxin Zhang et al.

Summary: A new integrated multidisciplinary-based framework was proposed to better understand the environmental risks of heavy metals in agricultural soils. Agricultural and industrial activities were identified as the main sources of heavy metals in the environment. The geochemical enrichment of heavy metals was found to have significant effects on the antibiotic resistomes in the environment.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Article Environmental Sciences

Leaching of rare earth elements from phosphogypsum

Sabrina F. Lutke et al.

Summary: This study investigates the leaching conditions and mechanisms of rare earth elements (REE) from phosphogypsum (PG). Through experimental design and optimization, high leaching efficiency values were obtained using sulfuric acid at a concentration of 2.9 mol L-1, a solid/liquid ratio of 1.7/20 g mL(-1), and a temperature of 55 C. The leaching kinetics results indicated that most REE reached equilibrium in about 20 minutes, and the mechanism investigation suggested that surface chemical reaction and diffusion through the boundary layer controlled the leaching process.

CHEMOSPHERE (2022)

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Review Environmental Sciences

Utilization path of bulk industrial solid waste: A review on the multi-directional resource utilization path of phosphogypsum

Fenghui Wu et al.

Summary: This paper summarizes the pretreatment and resource utilization technology of phosphogypsum, analyzes the shortcomings of existing technology in consuming a large amount of phosphogypsum, and proposes four promising directions for resource utilization. Moreover, the research basis for phosphogypsum treatment is summarized, reducing repeated research and treatment costs.

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2022)

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Article Environmental Sciences

Phytoremediation of Arsenic-Contaminated Soils Amended with Red Mud Combined with Phosphogypsum

Enio Tarso de Souza Costa et al.

Summary: This study evaluated the use of red mud and a mixture of red mud with phosphogypsum (RMPG) as amendments to reduce arsenic availability in contaminated soils. The amendments increased pH, EC, and sodium concentration in soils, while decreasing arsenic concentration in leachates and plant tissues. RMPG was found to be particularly advantageous, providing both arsenic reduction and additional nutrients for plant growth.

WATER AIR AND SOIL POLLUTION (2021)

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Review Chemistry, Multidisciplinary

Phosphogypsum Recycling: A Review of Environmental Issues, Current Trends, and Prospects

Yelizaveta Chernysh et al.

Summary: This paper analyzes the recycling and possible alternatives of phosphogypsum, identifies the drawbacks of existing processing methods, and discusses future trends in waste management. Research findings reveal the utilization of phosphogypsum in various fields such as construction, agriculture, and environmental sectors, as well as its impacts on ecosystems and microorganisms.

APPLIED SCIENCES-BASEL (2021)

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Article Education, Scientific Disciplines

Partial Least Square (PLS) Analysis Most Favorite Tool in Chemometrics to Build a Calibration Model

Keshav Kumar

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RESONANCE-JOURNAL OF SCIENCE EDUCATION (2021)

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Article Chemistry, Multidisciplinary

Preparation and Application in HDPE of Nano-CaSO4 from Phosphogypsum

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ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2020)

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Industrial Experiment of Goaf Filling Using the Filling Materials Based on Hemihydrate Phosphogypsum

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MINERALS (2020)

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ANALYTICAL METHODS (2020)

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High-throughput NIR spectroscopic (NIRS) detection of microplastics in soil

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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2019)

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Inline simultaneous quantitation of tobacco chemical composition by infrared hyperspectral image associated with chemometrics

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MICROCHEMICAL JOURNAL (2019)

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Near infrared spectroscopy: A mature analytical technique with new perspectives - A review

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ANALYTICA CHIMICA ACTA (2018)

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Sustainability assessment of symbiotic processes for the reuse of phosphogypsum

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Recycling phosphogypsum and construction demolition waste for cemented paste backfill and its environmental impact

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JOURNAL OF CLEANER PRODUCTION (2018)

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Review Food Science & Technology

Advances in NIR spectroscopy applied to process analytical technology in food industries

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CURRENT OPINION IN FOOD SCIENCE (2018)

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Inventories of heavy metal inputs and outputs to and from agricultural soils: A review

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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY (2018)

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Rapid assessment of petroleum-contaminated soils with infrared spectroscopy

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GEODERMA (2017)

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Review Green & Sustainable Science & Technology

Phosphogypsum as a construction material

Alaa M. Rashad

JOURNAL OF CLEANER PRODUCTION (2017)

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Application of leaching tests on phosphogypsum by infiltration-percolation

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Application of FTIR-PAS and Raman spectroscopies for the determination of organic matter in farmland soils

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Quantitative analysis of the water of crystallization of gypsum by near-infrared spectroscopy in Yungang Grottoes

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Using visible and near infrared spectroscopy to estimate carbonates and gypsum in soils in arid and subhumid regions of Isfahan, Iran

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New Developments for the Sensitivity Estimation in Four-Way Calibration with the Quadrilinear Parallel Factor Model

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Variables selection methods in near-infrared spectroscopy

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On the geometry of SNV and MSC

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On orthogonal signal correction

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CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS (2000)

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Rapid Determination of Phosphogypsum in Soil Based by Infrared (IR) and Near-Infrared (NIR) Spectroscopy with Multivariate Calibration

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