State-of-the-Art Review on the Geotechnical and Geoenvironmental Feasibility of Select Biochars

Nuruddin, Mohammad; Moghal, Arif Ali Baig

doi:10.1007/s40098-023-00788-3

Cited by 10 publications

(3 citation statements)

References 155 publications

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“…The compost samples were collected from a commercial composting plant in Shanghai and the composting projects were followed our previous procedure. − Detailed information about the sample preparations is offered in Text S1. Generally, a total of eight trapezoidal piles were constructed for the composting process.…”

Section: Methodsmentioning

confidence: 99%

“…Heavy metal adsorption in soil refers to the process by which heavy metal ions bind to soil particles, limiting their mobility and availability for uptake by plants and other organisms . Heavy metals such as lead, cadmium, mercury, and arsenic can be introduced into the soil through various sources, including industrial activities, mining, agriculture, and waste disposal.…”

Section: Introductionmentioning

confidence: 99%

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Remediation of Solid Wastes and Stabilization of Heavy Metal Contaminations Using Humid Acid Ligands

Cui,

Zhang,

Song

et al. 2024

ACS Sustainable Resour. Manage.

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Humic acid is regarded as an eco-friendly material to manage heavy metal contamination due to its favorable binding characteristics to heavy metals. The heavy metal−humic acid ligand binding characteristics are critical for managing the migration and toxicity of heavy metals. We utilized parallel factor analysis (PARAFAC) to isolate humic acid compounds into individual ligands. Furthermore, the modified Stern−Volmer equation and the hetero-two-dimensional correlation spectroscopy (2DCOS) were used to elucidate the complexing characteristics of humic acid with Cd 2+ and Cu 2+ , and good complexation properties between the ligands and heavy metals were observed. In the humic acid ligand, Cd 2+ /Cu 2+ binding processes, the Cd 2+ binding capability was significantly higher than for Cu 2+ . The binding rates of Cd 2+ and Cu 2+ and the humic acid ligands were negatively correlated with each other. The Cu 2+ /Cd 2+ binding capacities of the humic acid ligands were associated with the humification degree of the humic acid compounds. Therefore, different humification degree humic acid compounds could separately employed to treat different heavy metal contaminations precisely and effectively. The humic acid ligand−heavy metal complexing characteristics were illustrated theoretically for the control of heavy metals in the environment. Therefore, this study provides a strategy for the recovery of waste resources from contaminated soils into useful products.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Remediation of Solid Wastes and Stabilization of Heavy Metal Contaminations Using Humid Acid Ligands

Cui,

Zhang,

Song

et al. 2024

ACS Sustainable Resour. Manage.

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“…However, they have disadvantages: they are costly, show less improvement, have unfavorable for severe climatic conditions, etc. [5][6][7][8]. Lime is one of the oldest products used as a construction material, and its significance in the geotechnical field has recently been observed.…”

Section: Introductionmentioning

confidence: 99%

Comparative Studies on the Strength and Swell Characteristics of Cohesive Soils Using Lime and Modified Enzyme-Induced Calcite Precipitation Technique

Almajed,

Moghal,

Nuruddin

et al. 2024

Buildings

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Enzyme-induced calcite precipitation (EICP) emerges as a highly effective and well-established technique within bio-cementation approaches, offering notable advantages over traditional methods. Conversely, lime, known for its accessibility, cost-effectiveness, and efficacy, serves as a valuable material in enhancing the engineering properties of problematic soils. This study explores the application of EICP and lime treatments separately on two distinct soils (low-plastic and high-plastic soil) exhibiting different mineralogical and plasticity characteristics to assess their impact on strength and swell characteristics. Various combinations of treatments, including jack bean (JICP), soya bean (SICP), and bio-enhancer (BICP), were employed for EICP treatment. Bio-enhancer, rich in natural urea and urease enzyme, was particularly remarkable due to its compatibility with urea supplementation. Similarly, jack bean and soya bean exhibited high efficacy in natural urease enzyme content. The study has revealed that the unconfined compression strength (UCS) of red soil increased significantly by six times at the end of 21 days of the curing period with JICP treatment, while lime treatment was more effective for the black soil. Specifically, the UCS of black cotton soil increased by 11 and 17 times when treated with Enzyme-Induced Calcite Precipitation (EICP) and lime, respectively. Moreover, EICP with J2 solution (jack bean solution with 1M urea and 4 g/L non-fat milk powder) reduced swell pressure by 60% and 67.5% in low-plastic and high-plastic soil, respectively. Lime treatment, on the other hand, led to a swell pressure reduction of 47% and 70% in low-plastic and high-plastic soil, respectively. As a result, EICP proved efficient in mitigating swell pressure for red soil, whereas lime treatment performed exceptionally well for black soil, highlighting the soil-specific effectiveness of each method. Furthermore, a life cycle assessment revealed substantial carbon footprint emission savings with EICP treatment strategy. In brief, this paper contributes to understanding the phenomena and significance of these two treatment techniques on distinct mineralogical soils.

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State-of-the-Art Review on Geotechnical Engineering Towards Sustainability

Satyam,

Reddy

2024

Indian Geotech J

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State-of-the-Art Review on the Geotechnical and Geoenvironmental Feasibility of Select Biochars

Cited by 10 publications

References 155 publications

Remediation of Solid Wastes and Stabilization of Heavy Metal Contaminations Using Humid Acid Ligands

Remediation of Solid Wastes and Stabilization of Heavy Metal Contaminations Using Humid Acid Ligands

Comparative Studies on the Strength and Swell Characteristics of Cohesive Soils Using Lime and Modified Enzyme-Induced Calcite Precipitation Technique

State-of-the-Art Review on Geotechnical Engineering Towards Sustainability

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