Comparison of rice husk- and dairy manure-derived biochars for simultaneously removing heavy metals from aqueous solutions: Role of mineral components in biochars

Xu, Xiaoyun; Cao, Xinde

doi:10.1016/j.chemosphere.2013.03.009

Cited by 433 publications

(164 citation statements)

References 29 publications

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“…Animal manures, in particular, are mass produced in concentrated areas leading to both water and air quality issues as well as public health impacts [21,22]. Previous studies have shown that poultry litter steam-activated carbons or biochars can adsorb significant amounts of heavy metal ions [23,24] as well as other manures [25]. Biochars are the products of pyrolysis that result from the thermal degradation of organic materials.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of Chicken Litter and Wood Biochars and Their Activated Counterparts in Heavy Metal Clean up from Wastewater

Lima

Reddy

et al. 2015

Agriculture

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It is known that properties of activated biochars are tightly associated with those of the original feedstock as well as pyrolysis and activation conditions. This study examined two feedstock types, pine wood shavings and chicken litter, to produce biochars at two different pyrolysis temperatures and subsequently activated by steam, acid or base. In order to measure activation efficiency, all materials were characterized for their properties and ability to remediate two well-known heavy metals of concern: copper and arsenic. Base activated biochars were superior in arsenic adsorption, to acid or steam activated samples, but increase in adsorption was not significant to warrant use. For wood biochars, significant increases of surface functionality as related to oxygen bearing groups and surface charge were observed upon acid activation which led to increased copper ion adsorption. However, oxygen bearing functionalities were not sufficient to explain why chicken litter biochars and steam activated biochars appeared to be significantly superior to wood shavings in positively charged metal ion adsorption. For chicken litter, functionality of respective biochars could be related to phosphate containing groups inherited

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Section: Introductionmentioning

confidence: 99%

Efficacy of Chicken Litter and Wood Biochars and Their Activated Counterparts in Heavy Metal Clean up from Wastewater

Lima

Reddy

et al. 2015

Agriculture

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“…Moreover, biochar changes organic wastes into value-added biochar which acts as sorbents for eliminating contaminants in wastewater [79]. As mentioned above, the transformation of terra preta soil into a high fertile soil due to biochar addition is a great evidence of the role of biochar for soil sustainability.…”

Section: Biochar: Alternative Option For Soil Sustainabilitymentioning

confidence: 99%

“…Biochars act as sorbents for decontaminating wastewaters from heavy metals [79]. This might take place mainly through sorption on the surface functional groups of biochar [108], for example, oxygen-containing carboxyl, hydroxyl, and phenolic surface functional groups [109].…”

Section: Biochar As a Means Of Decontaminating Heavy Metals And Organmentioning

confidence: 99%

Biochar: The Black Diamond for Soil Sustainability, Contamination Control and Agricultural Production

Abdelhafez¹,

Abbas²,

Li³

2017

Engineering Applications of Biochar

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Production of biochars from agricultural wastes reduces significantly the volume and weight of the wastes, and hence, it can be considered as a promising means for managing the agricultural wastes. Biochar has received great interest during the last few years, due to its beneficial role to mitigate CO 2 emission through enhancing the long-term carbon sequestration. The effects of biochar on soil properties vary widely, depending on the characteristics of soil and the biochar. Most types of biochars are of alkaline nature and of high C content. Addition of biochar to the soil can improve the cation exchange capacity enrich soil with the nutrients and enhance the microbial growth, and improve some soil physical properties such as water retention and aggregation. For contamination control, biochars have proven to be a suitable tool for controlling the contaminants in the environment. The high surface area, porous structure, alkaline nature, and the presence of functional groups characterized the biochar as alternative option for the remediation of heavy metal contaminated waters and soils. However, there is a lack of knowledge regarding the effects of biochar in the presence of mineral and/or organic fertilizers on the plant growth and nutrient transformation in soils. In addition, biochar is successfully used for treating the acid soils; therefore, future studies are needed to investigate the neutralization of alkaline performance of biochar to be used safely in alkaline soils.

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“…Phosphorus reacts with Pb in soil to form pyromorphite [Pb 5 (PO 4 ) 3 OH], the most stable compound of Pb in the environment [30]. Xu et al [28] identified peaks that were associated with 2 3 CO − and 3 4 PO − in FTIR spectra of Rice huskderived biochar. This suggests that stabilisation of Pb through precipitation of lead as carbonate and phosphate is a possibility.…”

Section: Effects Of Amendment On Post-harvest Soil Pb Concentrationmentioning

confidence: 99%

Stabilisation of Pb in Pb Smelting Slag-Contaminated Soil by Compost-Modified Biochars and Their Effects on Maize Plant Growth

Ogundiran¹,

Lawal²,

Adejumo³

2015

JEP

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Comparison of rice husk- and dairy manure-derived biochars for simultaneously removing heavy metals from aqueous solutions: Role of mineral components in biochars

Cited by 433 publications

References 29 publications

Efficacy of Chicken Litter and Wood Biochars and Their Activated Counterparts in Heavy Metal Clean up from Wastewater

Efficacy of Chicken Litter and Wood Biochars and Their Activated Counterparts in Heavy Metal Clean up from Wastewater

Biochar: The Black Diamond for Soil Sustainability, Contamination Control and Agricultural Production

Stabilisation of Pb in Pb Smelting Slag-Contaminated Soil by Compost-Modified Biochars and Their Effects on Maize Plant Growth

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