Mechanisms for the removal of Cd(II) and Cu(II) from aqueous solution and mine water by biochars derived from agricultural wastes

Bandara, Tharanga; Xu, Jia‐Zhuang; Potter, Ian D.; Franks, Ashley E.; Chathurika, J.B.A.J.; Tang, Caixian

doi:10.1016/j.chemosphere.2020.126745

Cited by 136 publications

(47 citation statements)

References 46 publications

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“…A quite similar variability can be observed for cadmium. An AC prepared from canola shoot showed maximum sorption capacities of 15.52 mg Cu/g and 4.14 mg Cd/g [80]. Similar efficiency for Cu adsorption was observed for RSM, i.e.…”

Section: Types Of Pollutants Adsorbed and Wastewater Characteristicssupporting

confidence: 66%

“…Studies on sorption processes with rape biomass involving real effluents were reported by few authors [71,80,94,98,111]. Heavy metals have been successfully removed from industrial effluents: Cu from smelting wastewater in Canada using CM [78], Pb from spiked industrial wastewater in Romania (94% efficiency in biosorption column with RS meal) [71] and Cd (20% reduction) and Cu (95% removal) from acid mine water in Australia by using biochar obtained from canola shoot [80]. Dichloromethane was removed (90%) from chemical wastewater on defatted seeds from oil extraction in Japan, while total elimination of an herbicide from drainage water from sugarcane fields in Iran using canola stalk-based AC was obtained [111].…”

Section: Multi-component Systemsmentioning

confidence: 99%

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Valorization of Rapeseed Waste Biomass in Sorption Processes for Wastewater Treatment

Morosanu¹,

Teodosiu²,

Tofan³

et al. 2021

Environmental Issues and Sustainable Development

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Circular economy provides an efficient framework for effective biomass valorization, through strategic use and processing of resources and waste reuse. Being the second largest energetic crop, rapeseed (RS) presents a high potential in this sense. However, good management of the large quantity of generated wastes from agro-industrial activities is required. The most common management strategies in this sense refer to the reuse of RS wastes (mainly stems and press-cake) for animal feed, compost, soil amendment and fertilizer. Valorization of RS wastes as adsorbent for wastewater treatment is attractive. Despite the fact that only few articles on this subject exist in literature, they are sufficient to reflect the potential of this adsorbent to remove both inorganic and organic compounds from aqueous phase. The rapeseed wastes were used in native form (for diluted effluents) or modified by chemical or thermal treatment (for concentrated effluents or large molecule contaminants). This chapter will provide a review on the RS wastes management strategies, highlighting the applications for removing contaminants from wastewater in single and multi-component systems, in static or continuous operation mode.

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Section: Types Of Pollutants Adsorbed and Wastewater Characteristicssupporting

confidence: 66%

Section: Multi-component Systemsmentioning

confidence: 99%

Valorization of Rapeseed Waste Biomass in Sorption Processes for Wastewater Treatment

Morosanu¹,

Teodosiu²,

Tofan³

et al. 2021

Environmental Issues and Sustainable Development

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“…8,9 Adsorption has been proved to be an excellent method to remove Cd(II) from wastewater due to its signicant advantages such as the low cost, easy operation, high efficiency, and environmentally friendly nature. 10 Adsorbent is the core of adsorption technology. Common adsorbents including zeolite, diatomite and activated carbon have been widely used to adsorb heavy metal in wastewater.…”

Section: Introductionmentioning

confidence: 99%

Preparation of biochar by mango peel and its adsorption characteristics of Cd(ii) in solution

et al. 2020

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“…Biochar can release anions, such as OH − , SO 4 2− , CO 3 2− , and PO 4 3− . The previous reports have testi ed the precipitation between the heavy metals and anions (Bandara et al 2020) or surface groups of LDH materials (Li et al, 2021). Figure 4a illustrated that all the characteristic XRD peaks of BC-LDH after Cu(II) and Pb(II) loading were not shifted.…”

Section: Mineral Precipitationmentioning

confidence: 87%

Mechanistic Insight of Biochar-layered Double Hydroxide Composite for Efficient Removal of Aqueous Pb(II) and Cu(II)

Chen

et al. 2021

Preprint

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To explore the heavy metal adsorption mechanisms by biochar-based materials, MgAl-layered double hydroxide (MgAl-LDH) was loaded on a commercial coconut shell biochar (BC) to obtain the composite (BC-LDH) for adsorptive decontamination of Pb(II) and Cu(II) in water. The removal capacities of BC-LDH (294 and 38.6 mg/g) was higher than BC (13.3 and 11.4 mg/g) and LDH (126 and 22.7 mg/g) for aqueous Pb(II) and Cu(II). The pseudo-second-order equation and the Langmuir model could better illustrate the adsorption process, respectively. The interaction mechanisms between BC-LDH and heavy metals were classified as mineral precipitation (Qpre), cation exchange and isomorphic replacement (Qexc), electrostatic attraction (Qele), and surface complexation (Qcom) according to the characterization results. The quantitative analysis indicated that the contributions of the above mechanisms of BC-LDH for Pb(II) and Cu(II) followed the order of Qpre > Qele > Qexc and Qpre > Qexc > Qele, respectively. Compared with BC, the Qpre increased and Qele decreased significantly, certified the combination of BC and LDH provided a kind of viable composite in heavy metal wastewater treatment.

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Mechanisms for the removal of Cd(II) and Cu(II) from aqueous solution and mine water by biochars derived from agricultural wastes

Cited by 136 publications

References 46 publications

Valorization of Rapeseed Waste Biomass in Sorption Processes for Wastewater Treatment

Valorization of Rapeseed Waste Biomass in Sorption Processes for Wastewater Treatment

Preparation of biochar by mango peel and its adsorption characteristics of Cd(ii) in solution

Mechanistic Insight of Biochar-layered Double Hydroxide Composite for Efficient Removal of Aqueous Pb(II) and Cu(II)

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