Heavy metal concentrations and arsenic speciation in animal manure composts in China

Yang, X. B.; Li, Qian; Tang, Zhu; Zhang, Wenwen; Yu, Guanghui; Shen, Qirong; Zhao, Fang‐Jie

doi:10.1016/j.wasman.2017.03.015

Cited by 174 publications

(81 citation statements)

References 45 publications

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“…For the metals Cu, Fe, Zn and Mn, the contents obtained in the chemical characterization demonstrate that these organic wastes do not cause concern regarding environmental contamination (Yang et al, 2017). Nonetheless, jas.ccsenet.…”

Section: Chemical Composition Analysis Of the Organic Wastesmentioning

confidence: 85%

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Characterization of Organic Wastes and Effects of Their Application on the Soil

Oliveira¹,

Costa²,

Souza³

et al. 2018

JAS

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The agricultural farming activities generate organic waste whose indiscriminate deposition can be prejudicial to the environment. However, careful application of these wastes as organic fertilizers it is a possibility to improve soil fertility. This study aimed to confirm the hypotheses that organic wastes produced in various production chains in the semi-arid region of Ceará have contents of nutrients that give them potential as organic fertilizers and, since they are used as organic fertilizers, these residues improve the chemical soil attributes. Nutrient contents were determined at the laboratory and then the wastes were placed in decomposition bags and applied in a Fluvic Neosol. Soil samples were collected in the 0-0.10 m layer 90 days after wastes were applied. The residues presented nutrient contents that allow their use as organic fertilizers, except the shrimp farming residue that presented sodium content above that allowed by legislation, resulting also in higher element contents in the soil. In addition, the shrimp farming showed the lowest organic carbon content in relation to others chemical elements. The residues of the poultry industry and the compound made with residues of small ruminants presented the highest of nitrogen and phosphorus levels. The carnauba residue was associated with phosphorus immobilization because it presented C/P ratio higher than 300.

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Section: Chemical Composition Analysis Of the Organic Wastesmentioning

confidence: 85%

“…Recycling wastes from various production chains, whose inadequate disposal can cause negative impacts on the environment (Sharifi et al, 2016), presents itself as an important alternative to use them as organic fertilizers (Yang et al, 2017). characterization (Wei et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Organic Wastes and Effects of Their Application on the Soil

Oliveira¹,

Costa²,

Souza³

et al. 2018

JAS

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“…Studies indicate that their improper management leads to contamination of soil but also to groundwater and surface waters [18]. This is due to accumulation in high concentrations of macro-contents especially nitrogen, but also from the presence of heavy metals, which poses a serious threat to the environment, animals and people [16,23,24]. In addition to livestock buildings, but also in the storage or use of animal manure, emissions of greenhouse gases and odors are generated [5].…”

Section: Introductionmentioning

confidence: 99%

Methane fermentation as a possibility of utilization and energy – efficient management of sewage sludge

et al. 2018

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Abstract. Sewage sludge contains organic and biogenic substances that should be used. These materials may also contain toxic substances and heavy metals, and therefore require proper management in accordance with applicable law. Sewage sludge disposal is important for the protection of the environment, but also for the costs associated with the disposal of sludge. There are many technologies that are designed to use the properties of sewage sludge. It should be emphasized, however, that the proposed sewage sludge management technologies require investment outlays. In the present situation, research experiments have been carried out in the Environmental Technology Laboratory of the University of Environmental and Life Sciences in Poznan, indicating the possibility of efficient use of sewage sludge in the methane fermentation process. The use of sewage sludge in the fermentation mix allows the fertilizer to be obtained in the form of fermentation pulp, which also has the same properties as natural fertilizers. It should also be noted that the effect of physicochemical changes is the production of biogas, which is the source of electricity and/or heat. The economic sustainability of the use of sludge (taking into account the current costs of their disposal) is unequivocally positive when co-fermented in an appropriate proportion. The results show that sewage sludge can be successfully used in biogas plants as a co-substrate of fermentation mix. Therefore, the use of sewage sludge in biogas plants not only allows for the safe management and production of fertilizers, but also for the "green" energy.

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Section: Introductionmentioning

confidence: 99%

“…Due to the use of As-containing substances in animal feeds for growth promotion, As concentrations in animal manures and manure composts are often elevated (Yang et al, 2017). Arsenic speciation analysis of manure composts showed considerable amounts of methylated As species, especially dimethylarsenate (DMAs[V]) (Yang et al, 2017). DMAs(V) and, to a less extent, methylarsenate (MAs[V]), were formed during composting of manures, with the formation of methylated arsenicals being correlated with the copy number of microbial arsM genes (Zhai et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Arsenic methylation by a novel ArsM As(III) S‐adenosylmethionine methyltransferase that requires only two conserved cysteine residues

Huang

Packianathan

et al. 2017

Molecular Microbiology

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Arsenic (As) biomethylation is an important component of the As biogeochemical cycle that can influence As toxicity and mobility in the environment. Biomethylation of As is catalyzed by the enzyme arsenite (As[III]) S-adenosylmethionine methyltransferase (ArsM). To date, all identified ArsM orthologs with As(III) methylation activities have four conserved cysteine residues, which are thought to be essential for As(III) methylation. Here, we isolated an As(III)-methylating bacterium, Bacillus sp. CX-1, and identified a gene encoding a S-adenosylmethionine methyltranserase termed BlArsM with low sequence similarities (≤ 39%) to other ArsMs. BlArsM has six cysteine residues (Cys10, Cys11, Cys145, Cys193, Cys195 and Cys268), three of which (Cys10, Cys145 and Cys195) align with conserved cysteine residues found in most ArsMs. BlarsM is constitutively expressed in Bacillus sp. CX-1. Heterologous expression of BlarsM conferred As(III) resistance. Purified BlArsM methylated both As(III) and methylarsenite (MAs[III]), with a final product of dimethylarsenate (DMAs[V]). When all six cysteines were individually altered to serine residues, only C145S and C195S derivatives lost the ability to methylate As(III) and MAs(III). The derivative C10S/C11S/C193S/C268S was still active. These results suggest that BlArsM is a novel As(III) S-adenosylmethionine methyltransferase requiring only two conserved cysteine residues. A model of As(III) methylation by BlArsM is proposed.

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Heavy metal concentrations and arsenic speciation in animal manure composts in China

Cited by 174 publications

References 45 publications

Characterization of Organic Wastes and Effects of Their Application on the Soil

Characterization of Organic Wastes and Effects of Their Application on the Soil

Methane fermentation as a possibility of utilization and energy – efficient management of sewage sludge

Arsenic methylation by a novel ArsM As(III) S‐adenosylmethionine methyltransferase that requires only two conserved cysteine residues

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