Waste-to-resources: Green preparation of magnetic biogas residues-based biochar for effective heavy metal removals

Pan, Jingwen; Gao, Baoyu; Wang, Siyuan; Guo, Kangying

doi:10.1016/j.scitotenv.2020.140283

Cited by 59 publications

(21 citation statements)

References 60 publications

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“…5a, the high-resolution XPS spectrum showed three characteristic peaks of Pb 4f 3/2 , Pb 4f 5/2 Pb 4f 7/2 at 436.3, 414.4 and 139.5 eV, respectively, which indicated that Pb(II) was adsorbed onto the L@MNP surface in an ionic state. 67 Fig. 5b and c present the obvious shis of the O 1s and S 2p peaks, which proved that both O and S-containing groups contributed to the adsorption process.…”

Section: Intraparticle Diffusion Modelmentioning

confidence: 72%

Efficient and selective removal of Pb(ii) from aqueous solution by a thioether-functionalized lignin-based magnetic adsorbent

et al. 2022

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Section: Intraparticle Diffusion Modelmentioning

confidence: 72%

Efficient and selective removal of Pb(ii) from aqueous solution by a thioether-functionalized lignin-based magnetic adsorbent

et al. 2022

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“…After magnetization, a distinctive IR peak of the Fe–O band in relation to Fe 3 O 4 was detected at 572.4 cm −1 in FeBC and MFeBC. 38 The adsorption peaks at around 818.1 cm −1 and 906.0 cm −1 were due to the presence of aromatic/heteroaromatic structures, 39 which could provide π-electron and had the potential to capture TC ions. 40 The peak at 3309 cm −1 corresponded to the O–H stretching vibration of –OH.…”

Section: Resultsmentioning

confidence: 99%

Preparation of N,S-codoped magnetic bagasse biochar and adsorption characteristics for tetracycline

Hou

Xiaoqing³

et al. 2022

RSC Adv.

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“…While integrated biological and thermal-based conversion technologies was developed for high recovery of resources in livestock manure ( Cantrell et al, 2008 ), the fate of PTEs and ARGs should be raveled following application of the by-products such as the digested solids and or charcoal. So far, research and innovations on valued recycling of the biowastes through pyrorlysis had been often for bioenergy reuse ( Lam and Chase 2012 ; Dahal et al, 2018 ) and waste water treatment ( Inyang et al, 2015 ; Pan et al, 2020 ) beside carbon sequestration and metal immobilization, living the impacts of environmental fate of PTEs and ARGs in soil-plant application largely unexplored ( Kimbell, et al, 2018 ). In the future, more studies with various types of biowastes and in varying conditions should be conducted, addressing environmental and health risks by the potentially toxic metals and anti-biotics and genes associated with food production in world agriculture.…”

Section: Discussionmentioning

confidence: 99%

Pyrolyzed biowastes deactivated potentially toxic metals and eliminated antibiotic resistant genes for healthy vegetable production

Zhi

Rui

Liu

et al. 2020

Journal of Cleaner Production

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Potentially toxic metals (PTEs) and antibiotic resistance genes (ARGs) present in bio-wastes were the major environmental and health risks for soil use. If pyrolyzing bio-wastes into biochar could minimize such risks had not been elucidated. This study evaluated PTE pools, microbial and ARGs abundances of wheat straw (WS), swine manure (SM) and sewage sludge (SS) before and after pyrolysis, which were again tested for soil amendment at a 2% dosage in a pot experiment with a vegetable crop of pak choi ( Brassica campestris L.). Pyrolysis led to PTEs concentration in biochars but reduced greatly their mobility, availability and migration potential, as revealed respectively by leaching, CaCl 2 extraction and risk assessment coding. In SM and SS after pyrolysis, gene abundance was removed by 4 to 5 orders for bacterial, by 2-3 orders for fungi and by 3-5 orders for total ARGs. With these material amended, PTEs available pool decreased by 25% to 85% while all ARGs eliminated to background in the pot soil. Unlike a >50% yield decrease and a >30% quality decline with unpyrolyzed SM and SS, their biochars significantly ( p >0.05) increased biomass production and overall quality of pak choi grown in the amended soil. Comparatively, amendment of the biochars decreased plant PTEs content by 23-57% and greatly reduced health risk of pak choi, with total target hazard quotient values well below the guideline limit for subsistence diet by adult. Furthermore, biochar soil amendment enabled a synergic improvement on soil fertility, product quality, and biomass production as well as metal stabilization in the soil-plant system. Thus, biowastes pyrolysis and reuse in vegetable production could help build up a closed loop of production-waste-biochar-production, addressing not only circular economy but healthy food and climate nexus also and contributing to achieving the United Nations sustainable development goals.

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Waste-to-resources: Green preparation of magnetic biogas residues-based biochar for effective heavy metal removals

Cited by 59 publications

References 60 publications

Efficient and selective removal of Pb(ii) from aqueous solution by a thioether-functionalized lignin-based magnetic adsorbent

Efficient and selective removal of Pb(ii) from aqueous solution by a thioether-functionalized lignin-based magnetic adsorbent

Preparation of N,S-codoped magnetic bagasse biochar and adsorption characteristics for tetracycline

Pyrolyzed biowastes deactivated potentially toxic metals and eliminated antibiotic resistant genes for healthy vegetable production

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