Effect of Woodchips Biochar on Sensitivity to Temperature of Soil Greenhouse Gases Emissions

Criscuoli, Irene; Ventura, Maurizio; Sperotto, Andrea; Panzacchi, Pietro; Tonon, Giustino

doi:10.3390/f10070594

Cited by 8 publications

(4 citation statements)

References 72 publications

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“…Furthermore, its application to soils is practiced in order to achieve two other objectives: to increase soil fertility [46] and to contribute to the mitigation of climate change through the reduction of CO 2 and N 2 O emissions [47,48].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study of Biochar Fixed Bed Column for the Adsorption of Arsenic from Aqueous Solutions

Boni

Marzeddu

Tatti

et al. 2021

Water

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Two laboratory tests were carried out to verify the suitability of an Italian commercial biochar as an adsorbing material. The chosen contaminant, considered dissolved in groundwater, was As. The circular economic concept demands the use of such waste material. Its use has been studied in recent years on several contaminants. The possibility of using an efficient material at low cost could help the use of low-impact technologies like permeable reactive barriers (PRBs). A numerical model was used to derive the kinetic constant for two of the most used isotherms. The results are aligned with others derived from the literature, but they also indicate that the use of a large amount of biochar does not improve the efficiency of the removal. The particular origin of the biochar, together with its grain size, causes a decrease in contact time required for the adsorption. Furthermore, it is possible that a strong local decrease in the hydraulic conductibility does not allow for a correct dispersion of the flow, thereby limiting its efficiency.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study of Biochar Fixed Bed Column for the Adsorption of Arsenic from Aqueous Solutions

Boni

Marzeddu

Tatti

et al. 2021

Water

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“…The production of BC is also a sustainable solution for waste management [136,137] since it sequesters CO 2 [138], reintroduces important elements into the environment [139,140], replaces highly polluting materials and allows contributing to the circular economy [141][142][143]. Recently, the application of BC as an adsorbent media has been suggested for the removal of several contaminants [144,145], both inorganic (metals, salts) and organic (insecticides, herbicides, antibiotics) [146][147][148], also including the emerging ones [149].…”

Section: Biocharmentioning

confidence: 99%

A Review on the Removal of Carbamazepine from Aqueous Solution by Using Activated Carbon and Biochar

et al. 2021

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Carbamazepine (CBZ), one of the most used pharmaceuticals worldwide and a Contaminant of Emerging Concern, represents a potential risk for the environment and human health. Wastewater treatment plants (WWTPs) are a significant source of CBZ to the environment, polluting the whole water cycle. In this review, the CBZ presence and fate in the urban water cycle are addressed, with a focus on adsorption as a possible solution for its removal. Specifically, the scientific literature on CBZ removal by activated carbon and its possible substitute Biochar, is comprehensively scanned and summed up, in view of increasing the circularity in water treatments. CBZ adsorption onto activated carbon and biochar is analyzed considering several aspects, such as physicochemical characteristics of the adsorbents, operational conditions of the adsorption processes and adsorption kinetics and isotherms models. WWTPs usually show almost no removal of CBZ (even negative), whereas removal is witnessed in drinking water treatment plants through advanced treatments (even >90%). Among these, adsorption is considered one of the preferable methods, being economical and easier to operate. Adsorption capacity of CBZ is influenced by the characteristics of the adsorbent precursors, pyrolysis temperature and modification or activation processes. Among operational conditions, pH shows low influence on the process, as CBZ has no charge in most pH ranges. Differently, increasing temperature and rotational speed favor the adsorption of CBZ. The presence of other micro-contaminants and organic matter decreases the CBZ adsorption due to competition effects. These results, however, concern mainly laboratory-scale studies, hence, full-scale investigations are recommended to take into account the complexity of the real conditions.

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“…Two papers in this Special Issue address the effect of biochar on altering forest soil C storage and mitigating GHG emissions. The study of Criscuoli et al in northern Italy showed that conifer woodchip-derived biochar application did not significantly influence the temperature sensitivity of soil CO 2 and N 2 O emissions, but significantly reduced the sensitivity of soil CH 4 uptake [25]. In the second biochar study included in this Special Issue, Deng et al conducted an in situ experiment to examine the effects of shell-derived biochar and dicyandiamide (DCD) on soil N 2 O emissions from a tea oil camellia (Camellia oleifera Abel) plantation with intensive N application in Jiangxi province, China [26].…”

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confidence: 94%

Disturbance Effects on Soil Carbon and Greenhouse Gas Emissions in Forest Ecosystems

Cai

Chang

2020

Forests

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Forests cover around 30% of the global land area and forest ecosystems can store over 70% of total soil organic carbon (SOC) of all terrestrial ecosystems, but SOC stocks and greenhouse gas (GHG) emissions may be affected by both natural and anthropogenic disturbances. Even though the changes in forest soil C pool can have a significant effect on climate change, there are some contradictory results regarding the role of forest disturbance on SOC sequestration, GHG emissions, and the mitigation of global changes. Therefore, there is a need to better understand the impact of different disturbance regimes on forest soil C storage and GHG emissions. A Special Issue was therefore organized for discussing the responses of soil C storage and GHG emissions to various types of disturbances in forest ecosystems and a total of 15 studies were accepted for this special issue to assess these responses. This Special Issue includes the effects of storms and beetle outbreaks, Karstification, rock desertification, warming, nitrogen addition, land-use change, field tillage, and biochar application on soil C dynamics and/or GHG emissions.Disturbances from natural (e.g., insect outbreaks, geologic processes and wildfires) and anthropogenic (e.g., logging, applying soil amendments and land use change) are important drivers of changes of ecological processes in forest ecosystems, and the impact of disturbances on ecosystem processes may vary with the type and level of disturbances [1-3]. These disturbances are expected to markedly affect the amount, form and stability of soil organic carbon (SOC) and the emission of three major trace greenhouse gases (GHGs) (CO 2 , CH 4 and N 2 O) from forest ecosystems [4,5]. More than 70% of total SOC of all terrestrial ecosystems can be found in forest ecosystems [6] and thus, a minor change in the size of the forest SOC pool can exert a large impact on climate change on a global scale. The assessment of the variability in forest SOC storage and GHG emissions is thus a critical consideration for evaluating regional and global climate change [7]. It is vitally important to improve the understanding of the impact of different disturbance regimes on forest SOC storage and GHG emissions for guiding future research, forest management practices, and policy development. We therefore organized a Special Issue to bring together researchers working on different aspects of forest ecology to share their findings on disturbance effects on SOC storage and GHG emissions in forest ecosystems. We are pleased that we received a strong response from the scientific community to this call for the Special Issue and a total of 15 papers have ultimately been accepted for inclusion in this Special Issue.Three papers in this Special Issue address the effect of natural disturbances on SOC content and GHG emissions. Storms and beetle outbreaks are two major forms of disturbance in European forests,

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Effect of Woodchips Biochar on Sensitivity to Temperature of Soil Greenhouse Gases Emissions

Cited by 8 publications

References 72 publications

Experimental and Numerical Study of Biochar Fixed Bed Column for the Adsorption of Arsenic from Aqueous Solutions

Experimental and Numerical Study of Biochar Fixed Bed Column for the Adsorption of Arsenic from Aqueous Solutions

A Review on the Removal of Carbamazepine from Aqueous Solution by Using Activated Carbon and Biochar

Disturbance Effects on Soil Carbon and Greenhouse Gas Emissions in Forest Ecosystems

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