Potassium adsorption in soil cultivated with sugarcane

Freitas, Joycyely M A S; Netto, André Maciel; Corrêa, Marcus Metri; Xavier, Bruno T L; Assis, Fernando Xavier de

doi:10.1590/0001-3765201720160910

Cited by 10 publications

(5 citation statements)

References 17 publications

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“…Due to the high cation exchange capacity of RHA in compost, potassium adsorption increased. It was also reported by Freitas et al [26] that the adsorption of potassium on the adsorption sites increased due to high contents of Ca and Mg in the soil. The presences of several cations (K + , Ca 2+ , and Mg 2+ ) create competition for adsorption on the sorption site of RHA.…”

Section: Table 3 Physical Properties Of Matured Compostmentioning

confidence: 52%

Effect of Rice Husk Ash on the Physicochemical Properties of Compost

Hisham

Ramli

2019

Indones. J. Chem.

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Recently, the increase in demand for rice has led to the numerous availabilities of rice husks (RH) in Malaysia. RH is being utilized as industrial fuel to generate electricity through incineration process in the boiler. During the incineration process, rice husk ash (RHA) is being produced as the by-product and caused environmental pollution. RHA has the potential of being utilized as organic fertilizer through a composting process to control environmental pollution. Thus, this study investigated the effect of different compositions on the duration of the composting process and physicochemical properties of compost. The raw materials and finished compost were analyzed in terms of elemental composition, pH, water holding capacity, and moisture content. The obtained results showed that addition of 7.5 wt.% of RHA can improve composting process due to the presence of silica which can maintain the moisture content within 50–60% and water holding capacity of compost at the range of 61-73%. The results of this study have clearly shown the potential of the compositing process in treating RHA. However, further studies are required to provide a deeper understanding of the mechanisms involved in facilitating the development of an optimum treatment system applicable to the industry.

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Section: Table 3 Physical Properties Of Matured Compostmentioning

confidence: 52%

Effect of Rice Husk Ash on the Physicochemical Properties of Compost

Hisham

Ramli

2019

Indones. J. Chem.

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“…The major crop coincides with the dry season in most production zones in West Africa, and therefore desiccation followed by rapid rewetting of the cocoa pod husks will likely provoke a fast release of K. The minor crop harvest coincides with the rainy season, and our analysis would be relevant to describe kinetics of nutrient release. As K is released from the cocoa pod husks, its availability for absorption by the root system will depend on several soil characteristics, including hydrology, sorption capacity, texture and mineralogy (Alfaro et al 2004;Freitas et al 2018;Najafi-Ghiri et al 2017;Rosolem and Steiner 2017). Of these properties, the cation exchange capacity will play a strong role in buffering nutrient fluxes.…”

Section: Model Parametersmentioning

confidence: 99%

How nutrient rich are decaying cocoa pod husks? The kinetics of nutrient leaching

et al. 2021

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Aim Recycling of cocoa pod husks has potential to contribute to mineral nutrition of cocoa. Yet little is known of the nutrient content and nutrient release patterns from the husks. The potassium (K) rich husks are usually left in heaps in cocoa plantations in Africa. We aimed to understand and quantify release patterns of K and other nutrients from husks under varying rainfall regimes and assessed the effects of partial decomposition and inundation on nutrient leaching rates. Methods We incubated chunks of cocoa pod husks to assess decomposition rates and we measured nutrient leaching rates from two sets of husk chunks: one set was placed in tubes that were submitted to simulated scheduled rainfall events while the second set was continuously inundated in beakers. Results Decomposition of husks followed a second-order exponential curve (k: 0.09 day−1; ageing constant: 0.43). Nutrient losses recorded within 25 days were larger and more variable for K (33%) than for other macronutrients released in this order: Mg > Ca ≈ P > N (less than 15%). Potassium leaching was mainly driven by rainfall frequency (P < 0.05) and reinforced by intense rainfall, especially at lower frequency. Under water-saturated conditions, 11% of K was leached out within 48 h from fresh husks compared with 92% from partially decayed husks. Conclusion Some initial decomposition of cocoa pod husks is required to expose K to intense leaching. As decomposition progresses, abundant K losses are to be expected under frequent and/or intense rainfall events.

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“…Onde q e é a quantidade de corante adsorvido no equilíbrio (mg. g −1 ) e, C e a concentração de corante no equilíbrio da solução (mg. L −1 ). 29,30 Os modelos de isotermas de cinética de adsorção, pseudo-primeira ordem, 21,22 pseudo-segunda ordem 21-23 e difusão intrapartícula 8,24,25 foram aplicados segundo as Equações 3, 4 e 5 respectivamente:…”

Section: Cinética De Adsorçãounclassified

Adsorption of Dyes Indosol Blue, Indosol Orange and Drimarene Red in Aqueous Solution by White Clay

Castro¹,

Franco²,

Cidade³

2018

Rev. Virtual Quim.

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Currently, the index of the use of activated carbon as adsorbent in the treatment of water contaminated by dyes is constant due to its very developed porosity. However, due to the way this material is produced, its high cost and scarcity, it is necessary to search for alternative materials that guarantee the same efficiency. This study investigated the efficiency of white clay as an adsorbent for Indosol Blue (IB), Indosol Orange (IO) and Drimarene Red (DR). The adsorption data showed that the kinetic processes agreed with the pseudo-second order model. The adsorption processes were better adjusted to the Langmuir isotherm, indicating a chemical adsorption. ResumoAtualmente, o índice do uso de carvão ativado como adsorvente no tratamento de água contaminada por corantes é constante, devido a sua porosidade bastante desenvolvida. No entanto, à forma como este material é produzido, seu alto custo e escassez, tornase necessária a busca por materiais alternativos que garantam a mesma eficiência. Este estudo investigou a eficiência da argila branca como adsorvente para os corantes Azul Indosol (AI), Laranja Indosol (LI) e Vermelho Drimaren (VD). Os dados de adsorção mostraram que os processos cinéticos concordaram com o modelo de pseudo-segunda ordem. Os processos de adsorção foram melhores ajustados à isoterma de Langmuir, indicando uma adsorção química.

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Potassium adsorption in soil cultivated with sugarcane

Cited by 10 publications

References 17 publications

Effect of Rice Husk Ash on the Physicochemical Properties of Compost

Effect of Rice Husk Ash on the Physicochemical Properties of Compost

How nutrient rich are decaying cocoa pod husks? The kinetics of nutrient leaching

Adsorption of Dyes Indosol Blue, Indosol Orange and Drimarene Red in Aqueous Solution by White Clay

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