Co-pyrolysed animal manure and bone meal-based urea hydrogen peroxide (UHP) fertilisers are an effective technique of combating ammonia emissions

Luyima, Deogratius; Lee, J.-H.; Sung, Jwakyung; Oh, Taek–Keun

doi:10.1007/s10163-020-01074-7

Cited by 11 publications

(10 citation statements)

References 45 publications

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“…The reduction in the amounts of N released along increasing concentrations of BM in the co-pyrolysed biochar used to formulate the BFs may be as a result of increase in surface area properties. As was observed in our recently concluded study (manuscript has just been accepted for publication) by Luyima et al [32], large proportions of bone meal in the co-pyrolysed biomass led to production of porous biochar exemplified by the mat-like images obtained from the scanning electron microscopy (SEM). Both urea and UHP solutions might have been soaked up into those innumerable pores thus limiting their release into the solution.…”

Section: Slow Releases Of N and P From Bbfsmentioning

confidence: 52%

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Sorption of urea hydrogen peroxide by co-pyrolysed bone meal and cow dung slowed-down phosphorus and nitrogen releases but boosted agronomic efficiency

et al. 2020

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Co-pyrolysis of animal manure biomass with bone meal (BM) and soaking of the resultant biochar in urea containing solutions may offer a sustainable and cheap way of formulating slow-release nitrogen (N) and phosphorus (P) fertilisers. This method can lead to optimisation of the carbon sequestration capacity of the biochar, abatement of environmental pollution by P and N and alleviation of the severity of the projected future scarcity of P. A few studies have indicated that sorption can create efficient slow-release fertilisers although all of them utilised charged moieties such as ammonium ions to formulate them and as a result, there is a paucity of data concerning the efficiency of fertilisers formulated using uncharged compounds like urea. It’s against that background that we examined the possibility of leveraging co-pyrolysis and sorption with urea containing solutions to formulate slow-release N and P fertilisers along with assessing the agronomic efficiency of the formulated fertilisers through cultivating lettuce in pots for two seasons. Both urea-hydrogen peroxide (UHP) and urea were utilised as N sources. UHP (CDBM-UHP) and urea (CDBM-Urea) containing biochars averagely released 64.40% and 87.00% of the added N, respectively over the 28-day incubation period with the amount of N released decreasing with increasing concentrations of BM in the biochar. Lettuce yields and nutrient use efficiencies of N and P were higher in the CDBM-UHP than in the CDBM-Urea treatments. It’s therefore clear that sorption of UHP by BM containing biochar concomitantly slows-down releases of N and P and boosts the agronomic efficiency of the fertilisers.

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Section: Slow Releases Of N and P From Bbfsmentioning

confidence: 52%

“…pH of the BFs was determined in a 1:10 BFs: water suspension. The nutrient compositions and other chemical properties of the BFs are shown in Table 1 below while the properties of the soil used are given in Luyima et al [32].…”

Section: Characterisations Of Bfs and Soilmentioning

confidence: 99%

Sorption of urea hydrogen peroxide by co-pyrolysed bone meal and cow dung slowed-down phosphorus and nitrogen releases but boosted agronomic efficiency

et al. 2020

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“…However, animal manure feedstock biomasses have very low carbon retention capacities when charred [12] and co-pyrolysis with P has been mulled as an effective way of increasing the carbon content of the animal manure biochar by Zhao et al [13] and others. Since phosphate rock reserves are dwindling [14], searching for renewable sources of phosphorus for future use is imperative.…”

Section: Introductionmentioning

confidence: 99%

“…Since phosphate rock reserves are dwindling [14], searching for renewable sources of phosphorus for future use is imperative. It is against this background that [12] proposed the usage of bone waste and discerned that the biochar obtained from the co-pyrolysis of cow dung and bone meal retained much more carbon than the pristine cow dung biochar. Apart from increasing the amount of carbon (C) retained in the biochar, co-pyrolysis of biomass with P also slows down the rate of discharge of P and it is thus an effective way of formulating a slow release P fertilizer as confirmed by Zhao et al [13] and Luyima et al [7].…”

Section: Introductionmentioning

confidence: 99%

“…It is against this backdrop that our previous studies, i.e., Luyima et al [7,12] proposed an easy way of formulating slow release of nitrogen and P through co-pyrolysis of cow dung (a representative of animal manure) with bone meal and sorption of the biochar in urea and urea-hydrogen peroxide solutions. The formulated urea-enriched biochars were efficient at reducing ammonia emissions as well as lessening N and P releases and boosting agronomic efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Nutrient Dynamics in Sandy Soil and Leaf Lettuce Following the Application of Urea and Urea-Hydrogen Peroxide Impregnated Co-Pyrolyzed Animal Manure and Bone Meal

et al. 2021

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There is a paucity of data regarding the effect of nutrient-enriched biochar amendments on nutrient dynamics in both soil and crops. This is important because unlike pristine biochar, nutrient-enriched biochar is applied to the soil in minute quantities as large amounts may led to over application of the nutrients loaded in it. The current study examined the effects of both phosphorus- and nitrogen-enriched biochars on the dynamics of both macro and micronutrients in the sandy soil and leaf lettuce grown thereon. The phosphorus enrichment followed co-pyrolysis of animal manure (cow dung) with 25% and 50% bone meal (w/w), while the nitrogen enrichment was achieved by soaking the co-pyrolyzed biochar into urea and urea-hydrogen peroxide. The performances of the nutrient-enriched biochar were compared with the conventional amendment of urea and triple superphosphate (TSP) in the production of leaf lettuce over a period of two seasons in a pot experiment. The nutrient-enriched biochar amendments resulted into higher microbial biomass carbon and carbon to nitrogen ratios than the conventional amendment. The conventional amendment caused more phosphorus, potassium, and magnesium accumulations in the leaf lettuce than the nutrient-enriched biochar amendments. The nutrient-enriched biochar amendments led to more accumulations of nitrogen, calcium, and micronutrient elements in the leaf lettuce and availabilities of all the nutrient elements in the soil and thus, nutrient-enriched biochar acted as a reservoir that could provide nutrients to the growing lettuce beyond a single growing season.

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Investigation of biomass waste biochar production to act as matrix for urea

Baia

Luna

Leitão

et al. 2022

J Mater Cycles Waste Manag

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Co-pyrolysed animal manure and bone meal-based urea hydrogen peroxide (UHP) fertilisers are an effective technique of combating ammonia emissions

Cited by 11 publications

References 45 publications

Sorption of urea hydrogen peroxide by co-pyrolysed bone meal and cow dung slowed-down phosphorus and nitrogen releases but boosted agronomic efficiency

Sorption of urea hydrogen peroxide by co-pyrolysed bone meal and cow dung slowed-down phosphorus and nitrogen releases but boosted agronomic efficiency

Nutrient Dynamics in Sandy Soil and Leaf Lettuce Following the Application of Urea and Urea-Hydrogen Peroxide Impregnated Co-Pyrolyzed Animal Manure and Bone Meal

Investigation of biomass waste biochar production to act as matrix for urea

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