Characterisation, adsorption and desorption of ammonium and nitrate of biochar derived from different feedstocks

Aghoghovwia, Makhosazana P.; Hardie, Ailsa G.; Rozanov, Andrei

doi:10.1080/09593330.2020.1804466

Cited by 33 publications

(18 citation statements)

References 50 publications

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“…However, the rate of release of nitrites was significantly higher than for nitrates, an indication that they are easily leached. The reported information on desorption rates of NO3-N and NO2-N from biochar in this study are comparable with previous findings ( Aghoghovwia et al., 2020 ; Ajmal et al., 2020 ). Overall, plants utilize nitrogen in the form of nitrates and ammonium (Dai et al., 2015) and therefore the slow-release of the nitrates observed in this study is beneficial to plants.…”

Section: Resultssupporting

confidence: 93%

“…For example, in a study conducted by Thao et al. (2021) , rice husk biochar was found to have a nitrate adsorption capacity of 0.129 mg/g ( Aghoghovwia et al., 2020 ), studied Pine wood biochar and found 15.2 mg/g, and ( You et al., 2019 ) studied Coconut shell biochar and found 15.14 mg/g. However ( Thao et al., 2021 ), investigated Rice husk biochar and found 0.2477 (mg/g) ( Gierak and Łazarska, 2017 ), investigated Commercial carbon and found 0.2348 (mg/g), and ( A Hanafi, 2016 ) investigated Activated carbon from rice straw and found 1.1 (mg/g).…”

Section: Resultsmentioning

confidence: 99%

“…Similarly, Nitrites desorption rates from the adsorbents were 80.73, 91.39, and 83.62 %, for rice husk char, coconut husk char and coffee husk char, respectively. The desorption of nitrates and nitrites indicate that they were held by weak electrostatic forces on biochars and thus the enriched biochars could be used as slow-release fertilizers ( Aghoghovwia et al., 2020 ). However, the rate of release of nitrites was significantly higher than for nitrates, an indication that they are easily leached.…”

Section: Resultsmentioning

confidence: 99%

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Adsorption and desorption of nutrients from abattoir wastewater: modelling and comparison of rice, coconut and coffee husk biochar

Konneh¹,

Wandera

Murunga

et al. 2021

Heliyon

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Enrichment of water bodies with nutrients from wastewater is one of the causes of eutrophication to aquatic ecosystems. This study investigated the use of biochar derived from rice husk, coconut husk, and coffee husk in adsorbing nitrates (NO3-N) and nitrites (NO2-N) from slaughterhouse wastewater. It also explored the desorption efficiencies of the adsorbed nutrients to ascertain the applicability of the enriched biochars as slow-release fertilizers. To characterize the physicochemical properties of the biochars, scanning electron microscopy (SEM) was used. Fourier transforms infrared spectroscopy (FTIR), elemental analysis (CHNO) Langmuir and Freundlich, and the isotherm models were employed to fit the experimental equilibrium adsorption data. It was observed that the Langmuir isotherm model has the best fit of NO3-N and NO2-N on all the biochars. And this was based on the coefficient of correlation values. Also, the coconut husk biochar has the highest adsorption capacities of NO3-N and NO2-N at 12.97 mg/g, and 0.244 mg/g, respectively, attributing to its high porosity as revealed by the SEM images. The adsorption capacities for the rice husk char were 12.315 and 0.233 mg/g, while that for coffee husk char were12.08 mg/g and 0.218 mg/g for NO3-N and NO2-N, respectively. The relatively higher amount of NO3-N adsorbed to that of NO2-N could be attributed to its higher initial concentration in the solution than nitrite concentration. The desorption efficiencies of nitrates were 22.4, 24.39, and 16.79 %, for rice husk char, coconut husk char and coffee husk char, respectively. For the rice husk char, coconut husk char and coffee husk char, the nitrites desorption efficiencies were 80.73, 91.39, and 83.62 %, respectively. These values are good indicators that the studied biochar can be enriched with NO3-N and NO2-N and used as slow-release fertilizers.

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Adsorption and desorption of nutrients from abattoir wastewater: modelling and comparison of rice, coconut and coffee husk biochar

Konneh¹,

Wandera

Murunga

et al. 2021

Heliyon

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“…Various studies have proved the potential of biochars to retain nutrients in the soil. Most of them focused on the inorganic forms of nitrogen (N); ammonium ( NH + 4 ) and nitrate ( NO − 3 ) sorption were, for instance, reported by Aghoghovwia et al (2020), Fatima et al (2021), Kameyama et al (2012), and Pratiwi et al (2016). Moreover, pyrolysis conditions determine the potential of the biochar to retain NH + 4 and NO − 3 .…”

Section: Introductionmentioning

confidence: 99%

Amending a tropical Arenosol: increasing shares of biochar and clay improve the nutrient sorption capacity

Beusch

Melzer

Cierjacks

et al. 2022

Biochar

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Tropical Arenosols may be challenging for agricultural use, particularly in semi-arid regions. The aim of this study was to evaluate the impact of the addition of increasing shares of biochar and clay on the nutrient sorption capacity of a tropical Arenosol. In batch equilibrium experiments, the sorption of ammonium-N ($$\hbox {NH}_{4}^{+}{\text{-N}}$$ NH 4 + -N ), nitrate-N ($$\text {NO}_{3}^{-}{\text{-N}}$$ NO 3 - -N ), potassium ($$\text {K}^{+}$$ K + ), and phosphate-P ($$\text {PO}_{4}^{3-}{\text{-P}}$$ PO 4 3 - -P ) was quantified for mixtures of an Arenosol with increasing shares of biochar and clay (1%, 2.5%, 5%, 10%, 100%) and the unmixed Arenosol, biochar, and clay. The mid-temperature biochar was produced from Prosopis juliflora feedstock; the clayey material was taken from the sedimentary parent material of a temporarily dry lake. Only the Arenosol–biochar mixture with 10% biochar addition and the biochar increased the $$\text {NH}_{4}^{+}{\text{-N}}$$ NH 4 + -N maximum sorption capacity ($$q_{max}$$ q max ) of the Arenosol, by 34% and 130%, respectively. The $$q_{max}$$ q max of $$\text {PO}_{4}^{3-}{\text{-P}}$$ PO 4 3 - -P slightly increased with ascending biochar shares (1–10%) by 14%, 30%, 26%, and 42%, whereas the undiluted biochar released $$\text {PO}_{4}^{3-}{\text{-P}}$$ PO 4 3 - -P . Biochar addition slightly reduced $$\text {NO}_{3}^{-}{\text{-N}}$$ NO 3 - -N release from the Arenosol but strongly induced $$\text {K}^{+}$$ K + release. On the other hand, clay addition of 10% and clay itself augmented $$q_{max}$$ q max of $$\text {NH}_{4}^{+}{\text{-N}}$$ NH 4 + -N by 30% and 162%; ascending clay rates (1–100%) increased $$q_{max}$$ q max for $$\text {PO}_{4}^{3-}{\text{-P}}$$ PO 4 3 - -P by 78%, 130%, 180%, 268%, and 712%. Clay rates above 5% improved $$\text {K}^{+}$$ K + sorption; however, no $$q_{max}$$ q max values could be derived. Sorption of $$\text {NO}_{3}^{-}{\text{-N}}$$ NO 3 - -N remained unaffected by clay amendment. Overall, clay addition proved to enhance the nutrient sorption capacity of the Arenosol more effectively than biochar; nonetheless, both materials may be promising amendments to meliorate sandy soils for agricultural use in the semi-arid tropics.

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“…There are, however, numerous prospective benefits of integrating biochar in FSM studies. Such merits include: micro-organic mitigations [22]; reducing malodour [23]; contaminant barrier (bacteria and heavy metals) [15,24,25]; reduction in nitrogen [26], and carbon dioxide losses [27].…”

Section: Introductionmentioning

confidence: 99%

Potential Use of Biochar in Pit Latrines as a Faecal Sludge Management Strategy to Reduce Water Resource Contaminations: A Review

et al. 2021

Self Cite

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Faecal sludge management (FSM) in most developing countries is still insufficient. Sanitation challenges within the sub-Saharan region have led to recurring epidemics of water- and sanitation-related diseases. The use of pit latrines has been recognised as an option for on-site sanitation purposes. However, there is also concern that pit latrine leachates may cause harm to human and ecological health. Integrated approaches for improved access to water and sanitation through proper faecal sludge management are needed to address these issues. Biochar a carbon-rich adsorbent produced from any organic biomass when integrated with soil can potentially reduce contamination. The incorporation of biochar in FSM studies has numerous benefits in the control of prospective contaminants (i.e., heavy metals and inorganic and organic pollutants). This review paper evaluated the potential use of biochar in FSM. It was shown from the reviewed articles that biochar is a viable option for faecal sludge management because of its ability to bind contaminants. Challenges and possible sustainable ways to incorporate biochar in pit latrine sludge management were also illustrated. Biochar use as a low-cost adsorbent in wastewater contaminant mitigation can improve the quality of water resources. Biochar-amended sludge can also be repurposed as a useful economical by-product.

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Characterisation, adsorption and desorption of ammonium and nitrate of biochar derived from different feedstocks

Cited by 33 publications

References 50 publications

Adsorption and desorption of nutrients from abattoir wastewater: modelling and comparison of rice, coconut and coffee husk biochar

Adsorption and desorption of nutrients from abattoir wastewater: modelling and comparison of rice, coconut and coffee husk biochar

Amending a tropical Arenosol: increasing shares of biochar and clay improve the nutrient sorption capacity

Potential Use of Biochar in Pit Latrines as a Faecal Sludge Management Strategy to Reduce Water Resource Contaminations: A Review

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