Environmental and agronomic assessment of soil conditioners produced from bauxite residue and oil palm wastes

Leite, Robson da Costa; Lucheta, Adriano Reis; Holanda, Roseanne; Silva, Patricia Magalhães Pereira; Carmo, André; Gomes, Fernando Gama; Leite, Rubson da Costa; Melo, Caio César Amorim de; Costa, Raphael Vieira da; Montini, Marcelo; Fernandes, Antônio Rodrigues

doi:10.1016/j.envres.2023.116474

Cited by 3 publications

(1 citation statement)

References 30 publications

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“…Bauxite is a typical alkaline waste used in the stabilization process [28][29][30]. Alzhanova et al showed that the alkaline properties of bauxite residues decrease with time after use: cation convertibility and sodium exchange capacity decrease [2].…”

Section: Introductionmentioning

confidence: 99%

Recycling of Industrial Waste as Soil Binding Additives—Effects on Soil Mechanical and Hydraulic Properties during Its Stabilisation before Road Construction

Waciński,

Kuligowski,

Olejarczyk

et al. 2024

Materials

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To improve the in situ soil stabilization, different chemical additives are used (ion exchange compounds, additives based on H2SO4 or vinyl polymers, and organic additives using lignosulfonates). One interesting alternative is the production of additives from various waste materials. The extensive testing of waste-based blends with soil was performed; the mechanical (unconfined compressive strength (UCS)) and hydraulic (capillary rise, water absorption, and frost resistance (FR)) soil properties were measured. The optimization process led to obtaining additive compositions ensuring high strength and sealing properties: by-pass ash from the ceramics industry, waste H2SO4, pyrolytic waxes/oils from waste mixed plastics, waste tires and HDPE, and emulsion from chewing gum waste. For sandy soil, the following additives were the most promising: emulsion from pyrolytic wax (EPW) from waste PE foil (WPEF) with the addition of waste H2SO4, pyrolytic-oil emulsion from waste tires, EPW from waste mixed plastics with the addition of “by-pass” waste ash and NaOH, EPW from WPEF with the addition of NaOH, and EPW from WPEF reaching up to 93% FR, a 79.6% 7-day UCS increase, and a 27.6% of 28-day UCS increase. For clay: EPW from WPEF with the addition of NaOH, EPW from WPEF with the addition of waste H2SO4, and solely EPW from WPEF reaching up to 7.5% FR, an 80.7% 7-day UCS increase, and a 119.1% 28-day UCS increase.

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Section: Introductionmentioning

confidence: 99%

Recycling of Industrial Waste as Soil Binding Additives—Effects on Soil Mechanical and Hydraulic Properties during Its Stabilisation before Road Construction

Waciński,

Kuligowski,

Olejarczyk

et al. 2024

Materials

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Tracing nitrogen utilization and distribution during development of grape seedlings by applying different forms of 15N labeled fertilizer with fruit tree hole storage brick

Yao,

Jia,

Zhang

et al. 2024

Scientia Horticulturae

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Tracing N utilization and distribution during development of grape seedlings by applying different forms of 15N labeled fertilizer with fruit tree hole storage brick

Yao,

jia,

Zhang

et al. 2024

Preprint

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Background and aims Application of soil conditioner can promote the NUE in plants by increasing N retention in soil as an effective method to reduce chemical fertilizer consumption and environmental pollution. Methods We have prepared fruit tree hole storage brick (FTHSB) suitable for perennial fruit trees using natural nanomaterials, vermiculite and montmorillonite, and organic fertilizers, then recommended a new fertilization strategy combining N fertilizer and FTHSB based on subsurface drip irrigation. Results Application of FTHSB significantly increased the amount of dry matter in each organ of grape (Vitis vinifera L.) seedlings, significantly promoted fine root growth of soil layer in the range of 15–30 cm, reduced the leaching loss of 15N to deep soil and significantly improved the use efficiency of 15N. In the treatment without FTHSB, NO3−-N is better than NH4+-N and CO(NH2)2-N in terms of plant growth index of soil layer in the range of 15–30 cm and 15N use efficiency in plants. After the application of FTHSB, CO(NH2)2-N is better than NO3−-N and NH4+-N according to the above indicators. Conclusions In general, compared with ammonium and nitrate N FTHSB had the strongest adsorption capacity for amide N, so the N content of the soil in the vicinity of the FTHSB with amide N was also the highest, which improved the dry matter of all organs, the growth of the fine roots and the efficiency of N utilization in the grape seedlings.

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Environmental and agronomic assessment of soil conditioners produced from bauxite residue and oil palm wastes

Cited by 3 publications

References 30 publications

Recycling of Industrial Waste as Soil Binding Additives—Effects on Soil Mechanical and Hydraulic Properties during Its Stabilisation before Road Construction

Recycling of Industrial Waste as Soil Binding Additives—Effects on Soil Mechanical and Hydraulic Properties during Its Stabilisation before Road Construction

Tracing nitrogen utilization and distribution during development of grape seedlings by applying different forms of 15N labeled fertilizer with fruit tree hole storage brick

Tracing N utilization and distribution during development of grape seedlings by applying different forms of 15N labeled fertilizer with fruit tree hole storage brick

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