Soil microbial biomass and microbial activity in soils treated with heavy metal contaminated sewage sludge

Fließbach, Andreas; Martens, Rainer; Reber, H

doi:10.1016/0038-0717(94)90144-9

Cited by 376 publications

(194 citation statements)

References 23 publications

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“…Taken together, BSR and enzyme activities were higher in R1 but lower in R2 and R3 soils indicating that the microbes have greater potential in SOM decomposition and carbon flow to the atmosphere (Schlesinger and Andrews 2000) in an unpolluted soil, and soil contamination caused negative impacts on the soil microbiological characteristics. While some studies observed a certain increase of microbial activities in contaminated soils (Fließbach et al 1994). This discrepancy was likely due to differences in contamination level and microbial community structure which varied with soils.…”

Section: Discussionmentioning

confidence: 99%

Effect of long-term industrial waste effluent pollution on soil enzyme activities and bacterial community composition

Subrahmanyam

Shen

Liu

et al. 2016

Environ Monit Assess

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Although numerous studies have addressed the influence of exogenous pollutants on microorganisms, the effect of long-term industrial waste effluent (IWE) pollution on the activity and diversity of soil bacteria was still unclear. Three soil samples characterized as uncontaminated (R1), moderately contaminated (R2), and highly contaminated (R3) receiving mixed organic and heavy metal pollutants for more than 20 years through IWE were collected along the Mahi River basin, Gujarat, western India. Basal soil respiration and in situ enzyme activities indicated an apparent deleterious effect of IWE on microbial activity and soil function. Community composition profiling of soil bacteria using 16S rRNA gene amplification and denaturing gradient gel electrophoresis (DGGE) method indicated an apparent bacterial community shift in the IWE-affected soils. Cloning and sequencing of DGGE bands revealed that the dominated bacterial phyla in polluted soil were affiliated with Firmicutes, Acidobacteria, and Actinobacteria, indicating that these bacterial phyla may have a high tolerance to pollutants. We suggested that specific bacterial phyla along with soil enzyme activities could be used as relevant biological indicators for longterm pollution assessment on soil quality.

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Section: Discussionmentioning

confidence: 99%

Effect of long-term industrial waste effluent pollution on soil enzyme activities and bacterial community composition

Subrahmanyam

Shen

Liu

et al. 2016

Environ Monit Assess

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“…But in fact, many hyperaccumulators are slow in growth and inhibited in the presence of high concentration of heavy metals. On the other hand, the heavy metal contamination has great effects on the microbial communities in soils in several ways: (1) it may lead to a reduction of total microbial biomass (Brookes and McGrath, 1984;Fliessbach et al, 1994); (2) it decreases numbers of specific populations (Chaudri et al, 1993;Koomen et al, 1990); or (3) it makes shifts in the microbial community structure (Frostegård et al, 1993(Frostegård et al, , 1996Gray and Smith, 2005). Sandaa et al (1999) suggested that the presence of even small amounts of heavy metals caused a substantial reduction in the total bacterial diversity.…”

Section: Remediation Of Heavy Metals By Pgprmentioning

confidence: 99%

New advances in plant growth-promoting rhizobacteria for bioremediation

Zhuang

Chen

Shim

et al. 2007

Environment International

525

197

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“…Os metais pesados podem prejudicar a comunidade microbiana do solo (Insam et al, 1996;Brookes e macgrath, 1984;Fliebbach et al, 1994;Aceves et al, 1999), no entanto, a aplicação dos quelantes EDTA e EDDS, com base nos valores das taxas de degradação analisados neste trabalho, podem ter amenizado estes efeitos. da tabela 3, têm-se taxas de degradação iguais a 50,3%; 19,1% e 16,3% para as doses 250, 500 e 750 mg kg -1 de EDTA e iguais a 247,8%; 102,5%; e 90,8% para as doses 250, 500 e 750 mg kg -1 de EDDS.…”

Section: Solo Contaminadounclassified

Degradabilidade dos agentes quelantes EDTA e EDDS após aplicação no solo

Fiori

Abreu²,

Coscione³

et al. 2011

Bragantia

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ResumoEste trabalho objetivou avaliar a degradabilidade dos quelantes EDTA e EDDS por meio do monitoramento da respiração do solo. Os quelantes foram aplicados em dois solos, um Cambissolo Háplico contaminado por metais pesados e um Latossolo Vermelho-Amarelo não contaminado. Três doses de cada quelante (250, 500 e 750 mg kg -1 ) e uma dose de glicose foram aplicadas em ambos os solos testados, com três repetições cada uma. A degradação dos quelantes foi determinada por meio da quantificação do CO 2 emanado do início até o término do ensaio. As equações de cinética química não se ajustaram satisfatoriamente para ambos os quelantes no Latossolo, enquanto para o Cambissolo Háplico resultaram em valores de meia-vida entre 12-16 dias para o EDDS e de 6 dias para o EDTA. Nesse período, a quantidade degradada de EDTA foi de 15% somente. Para o Latossolo o EDTA foi responsável pela menor taxa de degradação, próxima de zero, ocorrida na menor dose, e o EDDS pela maior taxa (135%), ocorrida na maior dose. Para o Cambissolo Háplico, a menor taxa de degradação (19,2%) coube ao EDTA na maior dose e a maior taxa (211,4%), ao EDDS na menor dose. Ambos os quelantes tiveram redução da taxa de degradação com o aumento de suas respectivas doses, exceto com a aplicação da menor dose do EDDS (250 mg kg -1 ). Contudo, a degradabilidade do EDDS continuou maior que a verificada com a aplicação do EDTA.Palavras-chave: degradabilidade, cinética química, carbono degradado, EDTA. Degradability of chelant agent EDTA and EDDS after application on soil AbstractThis work aimed to evaluate the biodegradation of the chelant agents EDDS and EDTA through soil respiration. The chelant agents were applied in two soils, one was an Inceptisol contaminated with heavy metals and the other was a no contaminate Oxisol. Three doses of each chelant (250, 500 and 750 mg kg -1 ) and one dose of glucose were applied in both the soils tested, with three replicates. The chelant biodegradation was determined by quantifying the CO 2 emitted during the experiment. The chemical kinetics equations used did not fit the data satisfactory for both chelants on the Oxisol, while a half-life of 12-16 days for EDDS and of 6 days for EDTA was obtained for the Inceptisol. During the half-life period, a chelant degradation of only 15% was observed. For the Oxisol, EDTA was responsible for the lowest biodegradation rate, next to zero, which occurred at lowest dose added. EDDS caused the highest biodegradation (135%) at the highest dose added to the soil. For the Inceptisol, the lowest biodegradation rate (19.2%) was observed with the highest dose of EDTA and the largest degradation rate (211.4%) with the EDDS at the lowest dose. Both the chelants degraded less with the increase of their respective doses, except with the application of the lowest dose of the EDDS (250 mg kg -1 ). However, the biodegradation of the EDDS continued greater than that verified with the EDTA application.

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Soil microbial biomass and microbial activity in soils treated with heavy metal contaminated sewage sludge

Cited by 376 publications

References 23 publications

Effect of long-term industrial waste effluent pollution on soil enzyme activities and bacterial community composition

Effect of long-term industrial waste effluent pollution on soil enzyme activities and bacterial community composition

New advances in plant growth-promoting rhizobacteria for bioremediation

Degradabilidade dos agentes quelantes EDTA e EDDS após aplicação no solo

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