Preparation of biochar via pyrolysis at laboratory and pilot scales to remove antibiotics and immobilize heavy metals in livestock feces

Tian, Renqiang; Li, Chunxing; Xie, Shengyu; You, Futian; Cao, Zhaoliang; Xu, Zhihong; Yu, Guangwei; Yin, Wang

doi:10.1007/s11368-019-02350-2

Cited by 47 publications

(23 citation statements)

References 37 publications

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“…Fortunately, most organic contaminants are destroyed with high efficiency during pyrolysis, by thermal degradation and volatilization followed by destruction during vapor combustion. This has been shown for PAHs (Zielińska & Oleszczuk, 2015), polychlorinated biphenyls (Bridle et al, 1990), per‐ and polyfluoroalkyl substances (PFAS; Kundu et al, 2021), microplastics (Ni et al, 2020), antimicrobials (Ross et al, 2016), antibiotics (Tian et al, 2019), antibiotic resistance genes (Kimbell et al, 2018), and hormones (estrogen; Hoffman et al, 2016).…”

Section: Biochar's Role In the Circular Economymentioning

confidence: 91%

How biochar works, and when it doesn't: A review of mechanisms controlling soil and plant responses to biochar

et al. 2021

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We synthesized 20 years of research to explain the interrelated processes that determine soil and plant responses to biochar. The properties of biochar and its effects within agricultural ecosystems largely depend on feedstock and pyrolysis conditions. We describe three stages of reactions of biochar in soil: dissolution (1–3 weeks); reactive surface development (1–6 months); and aging (beyond 6 months). As biochar ages, it is incorporated into soil aggregates, protecting the biochar carbon and promoting the stabilization of rhizodeposits and microbial products. Biochar carbon persists in soil for hundreds to thousands of years. By increasing pH, porosity, and water availability, biochars can create favorable conditions for root development and microbial functions. Biochars can catalyze biotic and abiotic reactions, particularly in the rhizosphere, that increase nutrient supply and uptake by plants, reduce phytotoxins, stimulate plant development, and increase resilience to disease and environmental stressors. Meta‐analyses found that, on average, biochars increase P availability by a factor of 4.6; decrease plant tissue concentration of heavy metals by 17%–39%; build soil organic carbon through negative priming by 3.8% (range −21% to +20%); and reduce non‐CO2 greenhouse gas emissions from soil by 12%–50%. Meta‐analyses show average crop yield increases of 10%–42% with biochar addition, with greatest increases in low‐nutrient P‐sorbing acidic soils (common in the tropics), and in sandy soils in drylands due to increase in nutrient retention and water holding capacity. Studies report a wide range of plant responses to biochars due to the diversity of biochars and contexts in which biochars have been applied. Crop yields increase strongly if site‐specific soil constraints and nutrient and water limitations are mitigated by appropriate biochar formulations. Biochars can be tailored to address site constraints through feedstock selection, by modifying pyrolysis conditions, through pre‐ or post‐production treatments, or co‐application with organic or mineral fertilizers. We demonstrate how, when used wisely, biochar mitigates climate change and supports food security and the circular economy.

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Section: Biochar's Role In the Circular Economymentioning

confidence: 91%

How biochar works, and when it doesn't: A review of mechanisms controlling soil and plant responses to biochar

et al. 2021

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“…Biochar, a carbon-rich product derived from biomass pyrolysis under an oxygen-limited atmosphere, has attracted an increasing attention in recent years 12 – 14 . The massive production of agricultural wastes 10 , 15 , restaurant garbages 16 , sewage sludges 17 , 18 , manures 19 , 20 , and wood chips 21 , 22 provide an abundant source for biochar preparation. Moreover, the unique inherent properties of biochar (such as large surface area, high porosity, active surface functional groups and favorable cation-exchange capacity) make them have possible to remediate the contaminated water and soil environments 23 , 24 .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous adsorption of As(III) and Cd(II) by ferrihydrite-modified biochar in aqueous solution and their mutual effects

Tian

Xie

Chai

et al. 2022

Sci Rep

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A simply synthetic ferrihydrite-modified biochar (Fh@BC) was applied to simultaneously remove As(III) and Cd(II) from the aqueous solution, and then to explore the mutual effects between As(III) and Cd(II) and the corresponding mechanisms. The Langmuir maximum adsorption capacities of As(III) and Cd(II) in the single adsorbate solution were 18.38 and 18.18 mg g−1, respectively. It demonstrated that Fh@BC was a potential absorbent material for simultaneous removal of As(III) and Cd(II) in aqueous solution. According to the XRF, SEM–EDS, FTIR, XRD, and XPS analysis, the mechanisms of simultaneous removal of As(III) and Cd(II) by Fh@BC could be attributable to the cation exchange, complexation with R-OH and Fe-OH, and oxidation. Moreover, the mutual effect experiment indicated that Cd(II) and As(III) adsorption on Fh@BC in the binary solution exhibited competition, facilitation and synergy, depending on their ratios and added sequences. The mechanisms of facilitation and synergy between Cd(II) and As(III) might include the electrostatic interaction and the formation of both type A or type B ternary surface complexes on the Fh@BC.

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“…SSB was prepared by pyrolysis of hydrothermally treated sewage sludge at 600 °C for 45 min in a sewage sludge treatment plant in Xiamen City, Fujian Province, China, to reduce the pollutant risk (Li et al 2018a;Tian et al 2019). The obtained biochar was ground and passed through a 3.2 mm sieve prior to use in the field trial.…”

Section: Biochar and Planting Locationmentioning

confidence: 99%

Moderate sewage sludge biochar application on alkaline soil for corn growth: a field study

Xie

Jiang

et al. 2021

Biochar

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In view of the risks induced by the inhibitory effects of applying impracticably large amounts of sewage sludge biochar (SSB) to the alkaline soil, this field study investigated the influence of moderate biochar amendments (0, 1500, 4500, and 9000 kg/hm2) on corn growth, alkaline soil properties, and the uptake of potentially toxic elements (PTEs). The results showed that applying more SSB would decrease the ammonium nitrogen concentration and increase the available phosphorus and potassium concentrations, which inhibited corn plant growth because of high background nutrient levels of the alkaline soil. When the alkaline soil was amended with 1500 kg/hm2 SSB, the dry weight of 100 niblets increased from 32.11 g in the control to 35.07 g. There was no significant variation in the total concentration of PTEs in the soil. The concentrations of Mn, Ni, Cu, and Zn in niblets decreased from 5.54, 0.83, 2.26, and 27.15 mg/kg in the control to 4.47, 0.62, 1.30, and 23.45 mg/kg, respectively. Accordingly, the health risk from corn consumption was significantly reduced. Furthermore, the combination of SSB and fertilizer improved corn growth and reduced the risk of consumption of PTEs. Therefore, considering the increase in corn fruit yield and the decrease in consumption risk, applying 1500 kg/hm2 of biochar to alkaline soils is a realistically achievable rate, which can broaden the utilization of SSB for remediation of different types of soil.

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Preparation of biochar via pyrolysis at laboratory and pilot scales to remove antibiotics and immobilize heavy metals in livestock feces

Cited by 47 publications

References 37 publications

How biochar works, and when it doesn't: A review of mechanisms controlling soil and plant responses to biochar

How biochar works, and when it doesn't: A review of mechanisms controlling soil and plant responses to biochar

Simultaneous adsorption of As(III) and Cd(II) by ferrihydrite-modified biochar in aqueous solution and their mutual effects

Moderate sewage sludge biochar application on alkaline soil for corn growth: a field study

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