Role of Indigenous Arsenate and Iron(III) Respiring Microorganisms in Controlling the Mobilization of Arsenic in a Contaminated Soil Sample

Vaxevanidou, K.; Christou, Christos N.; Kremmydas, G. F.; Georgakopoulos, Dimitrios G.; Papassiopi, Nymphodora

doi:10.1007/s00128-015-1458-z

Cited by 39 publications

(13 citation statements)

References 26 publications

(37 reference statements)

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“…In the current context where sustainable farming systems are much needed, the use of these plant-friendly microorganisms as biofertilizers is more and more urgent (Yadav and Sarkar, 2019). In fact, the high cost of chemical fertilizers formulation and the difficulties of meeting their demand have encouraged scientists to develop biofertilizers as a solution to replace or at least partially substitute chemo-synthetic and chemical fertilizers (Vaxevanidou et al, 2015). However, the task is not easy because chemical formulation in agro-products is standardized for long-term storage, resistance to abuse of application and ease of use by farmers (Bashan et al, 2014).…”

Section: Biofertilizers As Complement To Chemical Fertilizersmentioning

confidence: 99%

From Isolation of Phosphate Solubilizing Microbes to Their Formulation and Use as Biofertilizers: Status and Needs

Soumaré

Boubekri

Lyamlouli

et al. 2020

Front. Bioeng. Biotechnol.

121

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The production of biofertilizers at industrial level is a bottleneck because bacterial strains are generally developed and managed by research laboratories and not by production units. A seamless transition from laboratory to field application is, therefore necessary. This review provides an overview of the constraints that limiting the application or the implementation of Actinobacteria based biofertilizers especially in agricultural field and suggests solutions to overcome some of these limits. General processes of making and controlling the quality of the inoculum are briefly described. In addition, the paper underlines the opportunity of biofertilizers alone or in combination with chemical fertilizers. This review also, highlights the latest studies (until June 2019) and focuses on P-solubilization microorganisms mainly Actinobacteria. The biotechnology of these bacteria is a glimmer of hope for rock phosphate (RP) bioformulation. Since direct application of RP fertilizer is not always agronomically effective due to its sparse solubility.

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Section: Biofertilizers As Complement To Chemical Fertilizersmentioning

confidence: 99%

From Isolation of Phosphate Solubilizing Microbes to Their Formulation and Use as Biofertilizers: Status and Needs

Soumaré

Boubekri

Lyamlouli

et al. 2020

Front. Bioeng. Biotechnol.

121

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“…For the bioleaching of metals from sewage sludge, organic acids are more promising than inorganic chelating agents, since extraction can occur in mildly acidic conditions (pH 3–4) and they are biodegradable and have low environmental impact. There is a need for a sustainable, environmentally-friendly, readily available, inexpensive, and efficient extractant for the removal of heavy metals 19–24…”

Section: Introductionmentioning

confidence: 99%

Efficacy of Cassava Peel Extracts for the Removal of Heavy Metals from Hospital Sewage Sludge in Nigeria

Adeolu

Adewoye

2019

Journal of Health and Pollution

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Background. The use of strain-specific microbial fermentation in the production of organic acids for the removal of heavy metals from sludge has been extensively studied. However, there is scarce information on the use of microflora for fermentation. Objectives. To assess the efficacy of cassava peel extracts for the removal of heavy metals from hospital sewage sludge in Nigeria. Methods. A composite sewage sludge sample was collected from the University College Hospital sewage treatment plant in Ibadan, Nigeria and analyzed for heavy metals using standard methods. Aspergillus niger fermentation and crude fermentation extract were obtained from the cassava peels strain of Aspergillus niger and indigenous microflora, respectively. The experiment was carried out by adding 10 ml of the treatment to 3 g of each sludge sample (extracts and controls) at varied temperatures (room and elevated) and pH (3–5). The mixture was centrifuged after a contact time of 1–12 days at 1000 rpm for 1 hour. The filtrate was analyzed for heavy metals concentrations and compared with the standards. Data were analyzed using descriptive statistics and adsorption models. Results. Mean heavy metal concentrations in the sludge were estimated for copper (2.22±0.2 mg/kg), zinc (52.3±0.1 mg/kg), chromium (1.46±0.1 mg/kg), nickel (5.6±0.01 mg/kg), and lead (1.9±0.1 mg/kg) and were below permissible limits. Optimum heavy metal removal for Aspergillus niger fermentation extract at room temperature was achieved on day 12 at pH 3.5 for zinc (74.5%), while optimum heavy metal removal at elevated temperature was achieved on day 9 at pH 3.0 for lead (79.3%). The optimum pH for crude fermentation extract lies between pH 3.0–4.5 for nickel (76.2%) at room temperature and chromium (76.6%) at elevated temperature. Conclusions. Crude fermentation extract of cassava peel was found to be effective in removing heavy metals from sewage sludge. Therefore, its use could be adopted and promoted for removing heavy metals from sewage sludge to achieve safe disposal. Competing Interests. The authors declare no competing financial interests.

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“…Chemical fertilizers, pesticides, herbicides and other agricultural inputs derived from fossil fuels have increased agricultural production, yet the growing awareness and concern over their adverse effects on soil productivity and environmental quality cannot be ignored. The high cost of these products, the difficulties of meeting demand for them, and their harmful environmental legacy have encouraged scientists to develop alternative strategies to raise productivity, with microbes playing a central role in these efforts (Vaxevanidou et al 2015 ). One application is the use of soil microbes as bioinoculants for supplying nutrients and/or stimulating plant growth.…”

Section: Introductionmentioning

confidence: 99%

Effective role of indigenous microorganisms for sustainable environment

2015

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Environmental protection has the foremost importance in the present day life of mankind. Scientists have been researching for technologies naturally available for enhancement of agriculture, management of agricultural waste, etc. Indigenous Microorganisms (IMO’s)-based technology is one such great technology which is applied in the eastern part of world for the extraction of minerals, enhancement of agriculture and waste management. Indigenous microorganisms are a group of innate microbial consortium that inhabits the soil and the surfaces of all living things inside and outside which have the potentiality in biodegradation, bioleaching, biocomposting, nitrogen fixation, improving soil fertility and as well in the production of plant growth hormones. Without these microbes, the life will be wretched and melancholic on this lively planet for the survival of human race. That is why, environmental restoration and safeguarding target via the indigenous microbes in a native manner to turn out the good-for-nothing and useless waste into productive bioresources is the primary concern of this review. Based on the collection sites, the process of collection and isolation methods are different as they may vary from place to place. Ultimately, in this way to a meaningful and significant extent, we can bridge the gap between the horrifying environmental distress and the hostile activities that have been constantly provoked by human kind—by getting these indigenous microorganisms into action.

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Role of Indigenous Arsenate and Iron(III) Respiring Microorganisms in Controlling the Mobilization of Arsenic in a Contaminated Soil Sample

Cited by 39 publications

References 26 publications

From Isolation of Phosphate Solubilizing Microbes to Their Formulation and Use as Biofertilizers: Status and Needs

From Isolation of Phosphate Solubilizing Microbes to Their Formulation and Use as Biofertilizers: Status and Needs

Efficacy of Cassava Peel Extracts for the Removal of Heavy Metals from Hospital Sewage Sludge in Nigeria

Effective role of indigenous microorganisms for sustainable environment

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