Effects of hydroxyapatite and modified biochar derived from Camellia oleifera fruit shell on soil Cd contamination and N2O emissions

Gao, Yu; Luo, Laicong; Deng, Bangliang; Shad, Nasir; Hu, Dongnan; Aly, Hesham M.; Zhang, Ling

doi:10.1016/j.indcrop.2021.114476

Cited by 18 publications

(9 citation statements)

References 51 publications

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“…COS primarily consists of cellulose, lignin, and hemicellulose [25,26], and can serve as the perfect raw material for obtaining activated carbon [27]. COS manufactured biochar can adsorb toxic chemicals [28,29] and heavy metals [30,31] in water [32]. Nevertheless, it has not yet been employed for the recovery of rare earth ions.…”

Section: Introductionmentioning

confidence: 99%

In Situ Modification of Activated Carbon Made from Camellia oleifera Shell with Na2EDTA for Enhanced La3+ Recovery

Huang,

Zeng,

Fan

et al. 2024

Minerals

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It is important to recover La3+ from metallurgical solutions or wastewater. However, the recovery rate of La3+ is usually less than 1% and the recovery methods are not environmentally friendly or user-friendly. Therefore, a straightforward, efficient, clean, and economically friendly method is needed. In this investigation, a modified adsorbent, COSAC-Na2EDTA-15, which was made from the Camellia oleifera shell (COS) and disodium ethylenediaminetetraacetic acid (Na2EDTA), was invented. In addition, characterization of the COSAC-Na2EDTA-15 adsorbent was conducted using SEM and XPS, and the principle of adsorption was revealed. The adsorption kinetics followed P-S-O KM, while the isotherm of COS-activated carbon (COSAC) aligned more closely with the Langmuir model. Compared to COSAC, the maximum La3+ adsorption capacity of COSAC-Na2EDTA-15 increased from 50 to 162.43 mg/g, and the content of O and N changed from 7.31% and 1.48% to 12.64% and 4.15%, respectively. The surface of the COSAC-Na2EDTA-15 exhibited abundant C, N, and O elements, and La3+ was detected on the sample surface after adsorption. The test and analysis results fully indicate that La3+ can be successfully adsorbed on the surface of COSAC-Na2EDTA-15. Because of its easy preparation, low cost, and superior performance, activated carbon made from COS finds extensive applications in the adsorption and recovery of rare earth elements.

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Section: Introductionmentioning

confidence: 99%

In Situ Modification of Activated Carbon Made from Camellia oleifera Shell with Na2EDTA for Enhanced La3+ Recovery

Huang,

Zeng,

Fan

et al. 2024

Minerals

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“…Soil heavy metal contamination, in particular, is a global issue 2 – 4 . Among these heavy metal pollutants, cadmium (Cd) is one of the most common and toxic pollutants in soil 5 , 6 , which has been identified as a severe threat to human, animal, and plant health 7 , 8 . Cd enters the environment mainly through industrial processes and phosphate fertilizers, and can accumulate in crops before eventually transferring to the food chain 9 .…”

Section: Introductionmentioning

confidence: 99%

A novel biochar-based composite hydrogel for removing heavy metals in water and alleviating cadmium stress in tobacco seedlings

Du,

Liu,

Pan

et al. 2023

Sci Rep

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A novel composite hydrogel (AM/CMC/B) synthesized from peanut shell biochar effectively adsorbs heavy metal Cd in water and reduces its toxicity to tobacco seedlings. The hydrogel, prepared via hydrothermal polymerization using acrylamide (AM), carboxymethyl cellulose (CMC), and peanut shell biochar (B), exhibited a maximum adsorption capacity of 164.83 mg g−1 for Cd2+ and followed a pseudo-second-order kinetic model. In pot experiments, the application of exogenous AM/CMC/B mitigated the inhibitory effects of Cd-contaminated soil on tobacco seedling growth. Addition of 10 mg kg−1 Cd resulted in improved phenotype, root system development, enhanced photosynthetic capacity, stomatal conductance (Gs), stomatal number, and increased antioxidant activity while reducing MDA content and leaf cell death. These findings highlight the potential of AM/CMC/B as an environmentally friendly adsorbent for Cd removal from water and for reducing Cd stress toxicity in tobacco and other plants.

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“…Thus, the cost of brash removal may often be prohibitive. As a lignocellulose biomass, brash can alternatively be converted to a biochar through pyrolysis (high temperature, low oxygen decomposition) (Gao et al, 2022;Mood et al, 2021;Vu and Do, 2021). Biochar derived from lignocellulose material has been effectively used for many purposes previously, including water treatment (e.g., removal of metals, nutrients) (Cheng et al, 2021b;Oginni and Singh, 2021;Rana et al, 2021), leachate treatment (Pap et al, 2021a(Pap et al, , 2021b and in soil amendment to improve soil physical and chemical properties (Fatima et al, 2021;Guo et al, 2021;Rana et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Optimising production of a biochar made from conifer brash and investigation of its potential for phosphate and ammonia removal

Pap

Gaffney²,

Zhao³

et al. 2022

Industrial Crops and Products

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Effects of hydroxyapatite and modified biochar derived from Camellia oleifera fruit shell on soil Cd contamination and N2O emissions

Cited by 18 publications

References 51 publications

In Situ Modification of Activated Carbon Made from Camellia oleifera Shell with Na2EDTA for Enhanced La3+ Recovery

In Situ Modification of Activated Carbon Made from Camellia oleifera Shell with Na2EDTA for Enhanced La3+ Recovery

A novel biochar-based composite hydrogel for removing heavy metals in water and alleviating cadmium stress in tobacco seedlings

Optimising production of a biochar made from conifer brash and investigation of its potential for phosphate and ammonia removal

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