Characterization of biochar and phosphorus adsorption in charnockite-originated soils

Ilori, Augustus Oludotun Akinmayowa; Ogbonnaya, Ogbonnaya Uchenna; Asaolu, Julius Ilesanmi; Shittu, Oladapo; Fasina, A. S.

doi:10.1016/j.jssas.2022.06.004

Cited by 4 publications

(5 citation statements)

References 41 publications

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“…The potential to curb nutrient release to plant roots by means of inorganic N adsorption onto BC, thereby reducing soil ammonia and nitrate losses, is supported by existing research [115]. This phenomenon has been substantiated by experiments conducted in both laboratory and greenhouse settings [123], as well as through field investigations [94,115] and other relevant studies, e.g., adsorption [42,124].…”

Section: Biochar and Nitrogen Use Efficiencymentioning

confidence: 82%

“…Their findings revealed that the combined application of BC and potassium fertilizer enhanced sweet-potato performance, while also increasing soil pH and organic C, N, P, K, Ca, and Mg compared to singular applications. In Ekiti State, Ilori et al [124] investigated the effects of maize-stover BC pyrolyzed at 463.4 • C on phosphorus adsorption in soils derived from charnockite. They observed reduced phosphorus adsorption, indicating a potential increase in phosphorus availability.…”

Section: A Case Study Of Recent Studies Of Biochar In Nigeriamentioning

confidence: 99%

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Biochar Improves Soil Fertility and Crop Performance: A Case Study of Nigeria

Zubairu,

Michéli,

Ocansey

et al. 2023

Soil Systems

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Africa, specifically Nigeria, has witnessed a dramatic increase in population over the last century, prompting efforts to ensure sustainable food production and quality. Concerns for soil sustainability and food security have led to the exploration of cost-effective methods, such as biochar, to enhance soil quality. Researchers in Nigeria and Africa as a whole have investigated biochar’s potential to improve soil fertility and crop performance across various agroecological zones. This paper aims to review recent biochar research priorities on soil fertility and crop performance with an emphasis on various sole biochar applications and combinations with fertilizers to determine the research gaps that need to be developed more in biochar research in Nigeria. From the papers reviewed, sole biochar applications and biochar + macronutrients and biochar + manure combinations were studied more dominantly, while biochar + micronutrients research projects were scanty despite their low content in the semi-arid soils of Nigeria. The studies were spread across the country with the majority taking place in derived savanna and humid forest, while Sudan savanna and Sahel savanna received less research attention despite being characterized by a low-fertile soil and vast area of land. Research involving BC in the context of Sahel savanna (SLS) and Sudan savanna (SS) soils is strongly encouraged in Nigeria. This research should encompass a wide range of investigations, including sole BC applications and combinations of BC with macronutrients, micronutrients, and manure, as well as exploring its potential as a slow-release fertilizer. Incorporating exclusive biochar in substantial amounts appears economically unfeasible within the context of local biochar production. However, it can be utilized in the synthesis of slow-release fertilizers, requiring smaller quantities and potentially offering cost-effectiveness. This approach enhances soil condition and crop productivity. Challenges are faced due to less commercial production as a result of inadequate power and structural facilities. Exploring the modification of local biochar for slow-release fertilizers through future research offers potential profitability.

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Section: Biochar and Nitrogen Use Efficiencymentioning

confidence: 82%

Section: A Case Study Of Recent Studies Of Biochar In Nigeriamentioning

confidence: 99%

Biochar Improves Soil Fertility and Crop Performance: A Case Study of Nigeria

Zubairu,

Michéli,

Ocansey

et al. 2023

Soil Systems

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“…Complex organic reactions occur slowly on feedstock particles, and such conditions result in higher biochar yields than liquid or gaseous yields. Conversely, fast pyrolysis is associated with rapid heating rates at a temperature of approximately 500 °C, whereas gasification occurs at temperatures above 800 °C [38,49]. Both fast pyrolysis and gasification produce high bio-oil and syngas yields.…”

Section: Characterization and Properties Of Biocharmentioning

confidence: 99%

“…For instance, biochar produced at low temperatures (< 500 °C) is usually of lower quality than that produced at higher temperatures (> 500 °C). However, biochar produced at higher temperatures is usually high in pH, ash content, surface area, fixed carbon, surface pores, and CEC [31,49,50]. Additionally, a high ash content increases the nutrient content, but at high temperatures, nitrogen (N) and sulfur (S) usually decrease due to evaporation [38].…”

Section: Characterization and Properties Of Biocharmentioning

confidence: 99%

Assessing the Potential of Biochar as a Viable Alternative to Synthetic Fertilizers in Sub-Saharan Africa Smallholder Farming: A Review

Mashamaite,

Motsi,

Manyevere

et al. 2024

Agronomy

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The adverse effects of long-term usage of synthetic fertilizers such as eutrophication, weed infestation, opportunistic diseases, and declining yields have been established. However, the fact that soil fertility declines because of continuous cropping to meet the demand for feeding the ever-growing population, coupled with the high cost of chemical fertilizers, has left little option. This mainly affects resource-poor smallholder farmers, who heavily depend on their production for sustenance and economic well-being. Current research efforts have underscored the urgency of mitigating this trend by seeking a cost-effective and eco-friendly alternative to avert impending global food crises. Biochar has gained attention as a possible alternative to meet the soil requirements on many fronts, such as improving soil functioning and restoring degraded lands. Biochar is also known to reduce heavy metal mobility and inorganic contaminants, mitigating salinity and drought stress as well as greenhouse gas emissions associated with agriculture. However, these studies need to be harmonized to draft a more pragmatic approach to policy formulation and establish an enhanced paradigm. In this paper, we review several studies on biochar and synthesize its possible use as an alternative or supplement to synthetic fertilizers to enhance crop productivity under standard and stressful growing conditions. The ability of biochar to sequester carbon and its impact on soil properties are highlighted. We emphasize its potential for soil nutrient management and the possibility of adopting it as an alternative to synthetic fertilizer in smallholder farming. We also point out several critical research gaps that call for attention and serve as pointers for future research.

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“…It has been shown that soil pH, metal elements aluminium and calcium can significantly affect phosphorus adsorption in soil ( Jing et al., 2024 ). The addition of Fe(II) biochar to saline soil enhanced its phosphate adsorption capacity ( Wu et al., 2020 ), and addition of biochar to black soil improved the storage capacity of organic phosphorus ( Zhao et al., 2022 ; Ilori et al., 2023 ). In contrast, the mode of adsorption of phosphorus by black soil is mainly monolayer chemisorption, which is related to electrostatic repulsion and oxygen-containing functional groups ( Xue et al., 2023 ).…”

Section: Introductionmentioning

confidence: 99%

Phosphorus adsorption characteristics and release risk in saline soils: a case study of Songnen Plain, China

Jiang,

Yan,

Liu

et al. 2023

Front. Plant Sci.

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IntroductionThe Songnen Plain is one of the three major saline-alkali areas in China, covering a vast area, where drought and overgrazing have exacerbated the salinization trend, and will have great potential for development if utilized rationally. Phosphorus, as one of important soil nutrients, plays a crucial role in plant growth. How to minimize its loss and migration has become a current research hotspot. The objective of the present study was to elucidate the adsorption properties of phosphorus in soils affected by salinization and to establish the correlation between the potential for phosphorus release and soil properties.MethodsA batch treatment test was conducted in this study using three soils with the various salinization degrees to examine the impact of environmental factors on the adsorption properties and potential release of phosphorus.Results and discussionIt was found that the maximum phosphorus adsorption by the three salinization soils in 0-360 minutes accounted for 86.8%-90.5% of the total adsorption capacity; the equilibrium adsorption capacity was: HS> MS> LS. In cases where the phosphorus level in the surrounding liquid is low, the three levels of salinized soils exhibited varying levels of phosphorus discharge, with the adsorbent acting as the origin of contaminants. The Pseudo-second-order model kinetics and Langmuir equation can well describe the adsorption process, and the adsorption process is spontaneous heat absorption with entropy increase. Increasing the pH led to an increase in the adsorption of phosphorus from the three salinized soils. Additionally, the adsorption was enhanced by introducing varying concentrations of Na+, Ca2+, and Al3+ to the background solution. The phosphorus eutrophication release risk (ERI) demonstrated a gradual decline as temperature increased. Correlation analysis revealed a noteworthy positive correlation between TN, TP, and ERI, as well as a significant negative correlation between CEC, K+, and ERI. Furthermore, there was a highly significant negative correlation between coarse silt and fine silt. Considering local climatic and environmental factors is crucial for controlling the adsorption capacity of phosphorus in various salinized soils, as it can unveil the mechanism of phosphorus adsorption and impact its migration and release risk.

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Characterization of biochar and phosphorus adsorption in charnockite-originated soils

Cited by 4 publications

References 41 publications

Biochar Improves Soil Fertility and Crop Performance: A Case Study of Nigeria

Biochar Improves Soil Fertility and Crop Performance: A Case Study of Nigeria

Assessing the Potential of Biochar as a Viable Alternative to Synthetic Fertilizers in Sub-Saharan Africa Smallholder Farming: A Review

Phosphorus adsorption characteristics and release risk in saline soils: a case study of Songnen Plain, China

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