Removal of Cu, Zn, and Cd from aqueous solutions by the dairy manure-derived biochar

Xu, Xiaoyun; Cao, Xinde; Zhao, Ling; Wang, Hailong; Yu, Hongran; Gao, Bin

doi:10.1007/s11356-012-0873-5

Cited by 504 publications

(210 citation statements)

References 52 publications

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“…Biochar derived from waste biomass is now gaining much attention for its function as a biosorbent for environmental remediation (Xu et al 2013). In this perspective, sludge can be also transformed, e.g., into biofertilisers.…”

Section: Introductionmentioning

confidence: 99%

Assessment of microbiological and biochemical properties of dairy sewage sludge

Frąc

Jezierska-Tys

Oszust

et al. 2016

Int. J. Environ. Sci. Technol.

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The rational utilisation of sludge as organic matter application into the soil permits enrichment in nutrients such as nitrogen and phosphorus. As dairy sewage sludge contains large amounts of organic matter and minerals, utilisation of such sludge in agriculture appears to be a noteworthy proposal. However, such waste can also be a source of toxic substances, heavy metals, inhibitors, xenobiotics and potentially pathogenic microorganisms. Therefore, it is so important to monitor its microbiological and biochemical properties in aspect of the safety for human health, natural environment preservation and a suitable level of agricultural production maintenance. The objective of study was the estimation of selected microbiological, biochemical and chemical properties of activated sludge (AS) and waste activated sludge (WAS) originating from the dairy sewage treatment plant. Nitrification and ammonification rates, respiratory, dehydrogenases, acid phosphatase, alkaline phosphatase, protease and urease activities were at significantly higher levels in the WAS than in the AS. The pH value of the AS and WAS oscillated within the range of neutral reaction.

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Section: Introductionmentioning

confidence: 99%

Assessment of microbiological and biochemical properties of dairy sewage sludge

Frąc

Jezierska-Tys

Oszust

et al. 2016

Int. J. Environ. Sci. Technol.

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“…The bark has higher contents of ash (2.5-5%), Al and Si than wood (<2%). As trace elements composition of lignocellulosic feedstock can influence the properties of biochar produced, Xu et al (2013) found that PO4 3-and CO3 2-served as additional adsorption sites, contributing to the dairy manure biochar's high adsorption capacity for Cu, Zn and Cd. Baltrėnaitė et al (2016a) established that for effective application in biofiltration systems, selected biochar should contain inorganic nutrients in sufficient quantity (nitrogen 0.4%, phosphorus 0.15%, potassium 0.15%).…”

Section: Modification Methods For Lignocellulosic Biochar Towards Enhmentioning

confidence: 99%

“…the enhancement in adsorption capacity of Cr(VI) may be due to the increased rate of intraparticle diffusion of Cr(VI) ions into the pores of the biochar at higher temperatures (Karthikeyan et al, 2005). When the pore size of the adsorbent is larger than the diameter of the molecules of the adsorbate, then Knudsen diffusion begins to play a significant role (Xu et al, 2013). The adsorption behaviour of biochar is well correlated with the properties of the PTE.…”

mentioning

confidence: 99%

A review of lignocellulosic biochar modification towards enhanced biochar selectivity and adsorption capacity of potentially toxic elements

Chemerys¹,

Baltrėnaitė²

2018

Ukr J Ecol

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Biochar, which is rich in aromatic carbon and minerals, is a product of biomass pyrolysis at temperatures ranging from 350°C to 1000°C in oxygen-limited environments. In recent years biochar has generated much interest in the field of water treatment in view of low production costs, availability of the feedstock (e.g. lignocellulosic biomass waste) and adsorptive properties. This review incorporates researches on artificial and natural modifications of biochar towards adsorption of potentially toxic elements on biochar. The aim of this study was to provide a comprehensive review of recent research findings and theory developments on the existing modifications of biochar for adsorption of potentially toxic elements (i.e. inorganic compounds) from aqueous solutions. Factors affecting adsorption of potentially toxic elements by lignocellulosic biochar and modification techniques for lignocellulosic biochar towards enhanced adsorption of potentially toxic elements were analyzed. The novelty of this study is discussion of the natural modifications of biochar and smart properties of biochar towards adsorption of potentially toxic elements. Recommendations are offered for modifying the lignocellulosic biochar to produce designed, engineered or smart biochar with high adsorption capacity for potentially toxic elements. Key words: engineered biochar; adsorption; lignocellulosic biomass; pyrolysis IntroductionAccording to European Biochar Certificate 2015, biochar 'is a heterogeneous substance rich in aromatic carbon and minerals. It is produced by pyrolysis of the sustainably obtained biomass under controlled conditions with clean technology and is used for any purpose that does not involve its rapid mineralization to CO2 and may eventually become a soil amendment'. At the beginning of biochar research, it aroused much interest as a soil amendment because of its potential for carbon sequestration and soil quality improvement. After physical, chemical and biological properties of biochar (Sun et al., 2014) and production technologies (Nartey and Zhao, 2014) were investigated, biochar research shifted from soil improvement to application in health sciences and engineering. Biochar could be a new low-cost adsorbent for removal of inorganic compounds (e.g. potentially toxic elements). It can be produced from wastes (e.g. lignocellulosic biomass) and is cheaper than activated carbon because it is produced through single-stage pyrolysis at 350-1000 °C and does not need additional costs in the activation process. Activation is the second stage in the production of activated carbon and occurs in the temperature range of 600-1200 °C in the presence of oxidizing gas, e.g. CO2 or steam, which results in the formation of a well-developed micropore structure. Therefore, biochar requires less energy for production than activated carbon (Azargohar and Dalai, 2006) and can be used as an alternative adsorbent to remove potentially toxic elements (PTE) from water solutions and air (Baltrėnaitė et al., 2016a). It demonstrated the ability ...

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“…Due to the presence of surface functional groups such as acetamido, alcoholic, carbonyl, phenolic, amido, amino, sulfhydryl groups, cellulosic agricultural waste materials act as an important source for metal biosorption. Effective metal biosorption was demonstrated by microalgae, sea weeds, bacteria, fungi, animal residues and agricultural residues (Can et al 2006;Kirbiyik et al 2012;Xu et al 2013;Din and Mirza 2013;Zhao et al 2012;Farnad et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Response surface methodology optimization of nickel (II) removal using pigeon pea pod biosorbent

Aravind¹,

Lenin²,

Nancyflavia³

et al. 2013

Int. J. Environ. Sci. Technol.

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Pod of pigeon pea (Cajanus cajan), a celluloserich agricultural residue, was investigated for its nickel binding efficiency. The influence of key physicochemical parameters such as contact time, initial metal ion concentration, adsorbent dosage and pH on nickel (II) removal was studied. The equilibrium time was found to be 45 min. The optimum Ni (II) removal was obtained at an initial metal ion concentration of 80 mg/l, pH of 9.0 and an adsorbent dose of 400 mg/100 ml. A search for optimal combination of key variables was studied by response surface methodology for maximum removal of nickel. The experiment encompassing 17 runs was established with the aid of Box-Behnken design. Owing to the reasonable agreement between predicted and adjusted R 2 value (0.9714), the corresponding quadratic model gives the most appropriate relationship between the variables and response. The optimal point obtained was located in the valid region and the optimum adsorption parameters were predicted as an initial Ni (II) concentration of 60 mg/l, pH value of 9.0 and contact time of 75 min. Under these adsorption conditions, a maximum removal of 96.54 % of initial metal concentration was demonstrated.

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Removal of Cu, Zn, and Cd from aqueous solutions by the dairy manure-derived biochar

Abstract: Results indicated that dairy manure waste can be converted into value-added biochar as a sorbent for sorption of heavy metals, and the mineral components originated in the biochar play an important role in the biochar's high sorption capacity.

Cited by 504 publications

References 52 publications

Assessment of microbiological and biochemical properties of dairy sewage sludge

Assessment of microbiological and biochemical properties of dairy sewage sludge

A review of lignocellulosic biochar modification towards enhanced biochar selectivity and adsorption capacity of potentially toxic elements

Response surface methodology optimization of nickel (II) removal using pigeon pea pod biosorbent

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