Effect of Sludge Biochars Obtained at Different Pyrolysis Temperatures on the Adsorption of Cd(II)by Loess in Northwestern China

Dai, Liang; Ren, Jun; Tao, Ling; Li, Hua; Hao, JianXiu

doi:10.15244/pjoes/69577

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…As the control of biochar, the Langmuir maximum adsorption amount of MS100 is 2622 mg·kg −1 . With the increase of carbonization temperature, the maximum adsorption capacity increased rapidly in the following order: MS700 (49016 mg·kg −1 ) > MS500 (28391 mg·kg −1 ) > MS350 (22987 mg·kg −1 ), and was consistent with the ref [ 39 ]. The adsorption capacities of the selected biochar samples were slightly higher than those of the biochar samples in Table 4 , which were much higher than those of the four degraded soils; for example, the Q m of MS700 was 288 times that of SDS.…”

Section: The Results and The Discussionsupporting

confidence: 89%

Adsorption of Cadmium on Degraded Soils Amended with Maize-Stalk-Derived Biochar

Chen

et al. 2018

IJERPH

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Biochar has been extensively proven to distinctively enhance the sorption capacity of both heavy metal and organic pollutants and reduce the related environmental risks. Soil pollution and degradation widely coexist, and the effect of biochar addition on adsorption behavior by degraded soils is not well understood. Four degraded soils with different degrees of degradation were amended with maize-stalk-derived biochar to investigate the adsorption of cadmium using batch methods. The maximum adsorption capacity (Qm) of degraded soil remarkably decreased in comparison with undegraded soil (5361 mg·kg−1→170 mg·kg−1), and the Qm of biochar increased with increasing pyrolysis temperature (22987 mg·kg−1→49016 mg·kg−1) which was much higher than that of soil. The addition of biochar can effectively improve the cadmium adsorption capacity of degraded soil (36–328%). The improving effect is stronger when increasing either the degradation level or the amount of added biochar, or the pyrolysis temperature of biochar. Contrary to the general soil–biochar system, adsorption of Cd was not enhanced but slightly suppressed (7.1–36.6%) when biochar was incorporated with degraded soils, and the adsorptivity attenuation degree was found to be negatively linear with SOM content in the degraded soil–biochar system. The results of the present study suggest that more attention on the adsorption inhibition and acceleration effect difference between the soil–biochar system and the degraded soil–biochar system is needed.

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Section: The Results and The Discussionsupporting

confidence: 89%

Adsorption of Cadmium on Degraded Soils Amended with Maize-Stalk-Derived Biochar

Chen

et al. 2018

IJERPH

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“…Biochar can be prepared from carbon-rich materials by thermal decomposition under conditions of limited oxygen and temperature (<700 o C) [13]. In this scenario, biomass derived from agroindustrial wastes stand out because it is an inexpensive, abundant, renewable and biodegradable material and because it becomes and environmental problem when inadequately disposed [14].…”

Section: Introductionmentioning

confidence: 99%

Use of Adsorbent Biochar from Pequi (Caryocar Brasiliense) Husks for the Removal of Commercial Formulation of Glyphosate from Aqueous Media

Borba

Cuba

Terán

et al. 2019

Braz. arch. biol. technol.

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This study evaluated the capacity of adsorbent biochar derived from pequi husks to remove glyphosate (commercial formulation) in aqueous medium under three pH conditions (5.5, 7.0 and 8.0). This biochar presented a mean yield of 33.1% ± 2.66% and a high amount of surface particles of small dimensions endowing it with high surface area. The results showed that removal is proportional to pH increase in the range of 5.5 to 8.0. Adsorption assays performed at pH 7 and 8 fitted better to the Langmuir pseudo-first order kinetics model with fast adsorption in the first 15 to 30 minutes. The results for the acidic pH range fit none of the adopted models satisfactorily. The results obtained suggest that HIGHLIGHTS • Adsorption tests with commercial products are more realistic than with pure products • Biochar obtained from pequi husks can be used for adsorption of glyphosate • Low temperature pyrolysis produces biochar for removal of commercial glyphosate Borba, L.L.; et al

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The performance of temperature and acid-modified sludge in removing lead and cadmium

Jiang

Chen

Cao

et al. 2023

Environ Sci Pollut Res

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Effect of Sludge Biochars Obtained at Different Pyrolysis Temperatures on the Adsorption of Cd(II)by Loess in Northwestern China

Cited by 4 publications

References 14 publications

Adsorption of Cadmium on Degraded Soils Amended with Maize-Stalk-Derived Biochar

Adsorption of Cadmium on Degraded Soils Amended with Maize-Stalk-Derived Biochar

Use of Adsorbent Biochar from Pequi (Caryocar Brasiliense) Husks for the Removal of Commercial Formulation of Glyphosate from Aqueous Media

The performance of temperature and acid-modified sludge in removing lead and cadmium

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