Application of artificial neural network for the prediction of biosorption capacity of immobilized Bacillus subtilis for the removal of cadmium ions from aqueous solution

Ahmad, Muhammad Fayyaz; Haydar, Sajjad; Bhatti, Amanat Ali; Bari, Abdul

doi:10.1016/j.bej.2014.01.004

Cited by 56 publications

(19 citation statements)

References 31 publications

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“…The cell wall differs considerably from Gram-negative to Gram-positive bacteria, which is well documented in the literature [50][51][52]. Ahmad et al [54] investigated the biosorption capacity of Bacillus subtilis biomass immobilized in calcium alginate, in batch mode toward Cd(II) ions. Ahmad et al [54] investigated the biosorption capacity of Bacillus subtilis biomass immobilized in calcium alginate, in batch mode toward Cd(II) ions.…”

Section: Immobilized Bacterial Biosorbentsmentioning

confidence: 99%

Immobilized microbial biosorbents for heavy metals removal

Velkova

Kirova

Stoytcheva

et al. 2018

Engineering in Life Sciences

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Intensive industrial and urban growth has led to the release of increasing amounts of environmental pollutants. Contamination by metals, in particular, deserves special attention due to their toxicity and potential to bioaccumulate via the food chain. Conventional techniques for the removal of toxic metals, radionuclides and precious metals from wastewater all have a number of drawbacks, such as incomplete metal extraction, high cost and risk of generating hazardous by‐products. Biosorption is a cost‐effective and environment‐friendly technology, an alternative to conventional wastewater treatment methods. Biosorption is a metabolically independent process, in which dead microbial biomass is capable of removal and concentrating metal ions from aqueous solutions. Free microbial biosorbents are of small size and low density, insufficient mechanical stability and low elasticity, which causes problems with metal ion desorption, separation of the sorbent from the medium and its regeneration. Hence, the possibilities for the implementation of continuous biosorbent processes for metal removal in flow‐type reactor systems are reduced and the practical application of biosorption in industrial conditions is limited. By immobilizing microbial biomass on suitable carriers the disadvantages of free biosorbents are eliminated and more opportunities for practical use of biosorption become available. This review examines different immobilization techniques and carriers, certain basic features and possibilities of using immobilized microbial biosorbents for the removal and concentration of metals from aqueous solutions.

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Section: Immobilized Bacterial Biosorbentsmentioning

confidence: 99%

Immobilized microbial biosorbents for heavy metals removal

Velkova

Kirova

Stoytcheva

et al. 2018

Engineering in Life Sciences

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“…strains can be applied to the improvement of soil fertility, treatment of wastewater and environmental restoration of metal mining areas. For instance, Bacillus licheniformis can be utilized in the treatment of wastewater (Shih et al, 2001); Bacillus cereus and Bacillus subtilis have been extensively studied for their ability to adsorb the heavy metals chromium and cadmium (Ahmad et al, 2014;Naik et al, 2012). Moreover, B. thuringiensis has been applied to control insect pests of plants due to its higher expression of insecticidal (Cry) proteins (Betz et al, 2000).…”

Section: Plant Growth Promotion By Strain Nl-11mentioning

confidence: 99%

An Indigenous Soil Bacterium Facilitates the Mitigation of Rocky Desertification in Carbonate Mining Areas

Zhang

Guo

2017

Land Degrad Dev

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Carbonate minerals are extensively distributed across China, and their special rock structures make them vulnerable to land damage through mining, leading to rocky desertification. Soil microorganisms play an important role in mineral weathering. However, little is known about the utilization of the mineral‐weathering microorganisms to alleviate the problem of rocky desertification in mines. In the present study, the mineral‐solubilizing bacterium NL‐11 was isolated from soil around weathered dolostones and identified as Bacillus thuringiensis based on the Biolog identification system and 16S rDNA sequence analysis. The mineral dissolution experiments revealed that inoculation with the live bacterium significantly increased the mineral sample dissolution via significantly enhancing Ca and Mg release, with increase values of 303·27 and 50·55 mg L−1 respectively, compared with that with the inactivated bacterium. Moreover, the acetic acid secreted by strain NL‐11 markedly decreased the size of particle diameter (quantified with a laser diffraction particle size analyser) through reducing pH value. The eroded traces were observed by scanning electron microscopy analysis, and the results further verified the erosional effects of this strain. In addition, this bacterium contributed to the establishment and proliferation of plants by providing nutrient elements, such as phosphorus (P) and potassium (K). Our study not only provided an efficient bacterial strain NL‐11 but also enriched the technologies to mitigate problems associated with ecological restorations of carbonate mines. Copyright © 2017 John Wiley & Sons, Ltd.

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“…ANN modeling has been successfully applied for biosorption in the past few years (Ahmad et al, 2014;Bingol et al, 2012;Shojaeimehr et al, 2014;Mandal et al, 2015;Roy et al, 2014) The present study investigates the application of response surface methodology and artificial neural network approaches to predict biosorption capacity of waste flax meal for the removal of copper(II) ions from aqueous solution. Polish industry is largely based on the processing of copper, thus methods of removal as well as recovery of this metal are widely investigated by Polish scientists.…”

Section: Introductionmentioning

confidence: 99%