A novel bio-sorbent comprising encapsulated Agrobacterium fabrum (SLAJ731) and iron oxide nanoparticles for removal of crude oil co-contaminant, lead Pb(II)

Tiwari, Sakshi; Hasan, Abshar; Pandey, Lalit M.

doi:10.1016/j.jece.2016.12.017

Cited by 60 publications

(14 citation statements)

References 49 publications

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“…Encapsulated Agrobacterium sp. in alginate with nano-particles of Fe has shown an excellent adsorption capacity for continuously five cycles 64. Poor selectivity and difficulties in reusing biomass are some of the limitations of the process.…”

Section: Discussionmentioning

confidence: 99%

Bioremediation Options for Heavy Metal Pollution

Kapahi

Sachdeva

2019

Journal of Health and Pollution

253

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Background.Rapid industrialization and anthropogenic activities such as the unmanaged use of agro-chemicals, fossil fuel burning and dumping of sewage sludge have caused soils and waterways to be severely contaminated with heavy metals. Heavy metals are non-biodegradable and persist in the environment. Hence, remediation is required to avoid heavy metal leaching or mobilization into environmental segments and to facilitate their extraction.Objectives.The present work briefly outlines the environmental occurrence of heavy metals and strategies for using microorganisms for bioremediation processes as reported in the scientific literature.Methods.Databases were searched from different libraries, including Google Scholar, Medline and Scopus. Observations across studies were then compared with the standards for discharge of environmental pollutants.Discussion.Bioremediation employs microorganisms for removing heavy metals. Microorganisms have adopted different mechanisms for bioremediation. These mechanisms are unique in their specific requirements, advantages, and disadvantages, the success of which depends chiefly upon the kind of organisms and the contaminants involved in the process.Conclusions.Heavy metal pollution creates environmental stress for human beings, plants, animals and other organisms. A complete understanding of the process and various alternatives for remediation at different steps is needed to ensure effective and economic processes.Competing interests.The authors declare no competing financial interests.

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Section: Discussionmentioning

confidence: 99%

Bioremediation Options for Heavy Metal Pollution

Kapahi

Sachdeva

2019

Journal of Health and Pollution

253

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“…Immobilizations of microbial biomass in polymeric matrixes confer rigidity and heat resistivity with optimum porosity for practical applications. Agrobacterium biomass was encapsulated in alginate with iron oxide nanoparticles and showed an adsorption capacity of 197.02 mg/g for Pb and was effective for five consecutive cycles [ 144 ].…”

Section: Bioremediation Capacity Of Microorganisms On Heavy Metalsmentioning

confidence: 99%

Toxicity and Bioremediation of Heavy Metals Contaminated Ecosystem from Tannery Wastewater: A Review

Igiri

Okoduwa

Idoko

et al. 2018

Journal of Toxicology

622

232

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The discharge of untreated tannery wastewater containing biotoxic substances of heavy metals in the ecosystem is one of the most important environmental and health challenges in our society. Hence, there is a growing need for the development of novel, efficient, eco-friendly, and cost-effective approach for the remediation of inorganic metals (Cr, Hg, Cd, and Pb) released into the environment and to safeguard the ecosystem. In this regard, recent advances in microbes-base heavy metal have propelled bioremediation as a prospective alternative to conventional techniques. Heavy metals are nonbiodegradable and could be toxic to microbes. Several microorganisms have evolved to develop detoxification mechanisms to counter the toxic effects of these inorganic metals. This present review offers a critical evaluation of bioremediation capacity of microorganisms, especially in the context of environmental protection. Furthermore, this article discussed the biosorption capacity with respect to the use of bacteria, fungi, biofilm, algae, genetically engineered microbes, and immobilized microbial cell for the removal of heavy metals. The use of biofilm has showed synergetic effects with many fold increase in the removal of heavy metals as sustainable environmental technology in the near future.

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“…The maximum uptake capacity of the encapsulated agrobacterium fabrum was reported to be 197.0 mg/g at an optimum pH of 5.5. This study reported the maximum removal efficiency of 85% for the initial concentrations of Pb 2+ in the range of 100–4000 mg/L (Tiwari et al 2017 ). During the first 120 min, the adsorption rate was rapid, followed by a slower adsorption rate for up to 240 min prior to achieving equilibrium.…”

Section: Technologies For Lead Removalmentioning

confidence: 95%

Removal of lead ions (Pb2+) from water and wastewater: a review on the low-cost adsorbents

Chowdhury

Chowdhury²,

Mazumder³

et al. 2022

Appl Water Sci

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The presence of lead compounds in the environment is an issue. In particular, supply water consumption has been reported to be a significant source of human exposure to lead compounds, which can pose an elevated risk to humans. Due to its toxicity, the International Agency for Research on Cancer and the US Environmental Protection Agency (USEPA) have classified lead (Pb) and its compounds as probable human carcinogens. The European Community Directive and World Health Organization have set the maximum acceptable lead limits in tap water as 10 µg/L. The USEPA has a guideline value of 15 µg/L in drinking water. Removal of lead ions from water and wastewater is of great importance from regulatory and health perspectives. To date, several hundred publications have been reported on the removal of lead ions from an aqueous solution. This study reviewed the research findings on the low-cost removal of lead ions using different types of adsorbents. The research achievements to date and the limitations were investigated. Different types of adsorbents were compared with respect to adsorption capacity, removal performances, sorbent dose, optimum pH, temperature, initial concentration, and contact time. The best adsorbents and the scopes of improvements were identified. The adsorption capacity of natural materials, industrial byproducts, agricultural waste, forest waste, and biotechnology-based adsorbents were in the ranges of 0.8–333.3 mg/g, 2.5–524.0 mg/g, 0.7–2079 mg/g, 0.4–769.2 mg/g, and 7.6–526.0 mg/g, respectively. The removal efficiency for these adsorbents was in the range of 13.6–100%. Future research to improve these adsorbents might assist in developing low-cost adsorbents for mass-scale applications.

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A novel bio-sorbent comprising encapsulated Agrobacterium fabrum (SLAJ731) and iron oxide nanoparticles for removal of crude oil co-contaminant, lead Pb(II)

Cited by 60 publications

References 49 publications

Bioremediation Options for Heavy Metal Pollution

Bioremediation Options for Heavy Metal Pollution

Toxicity and Bioremediation of Heavy Metals Contaminated Ecosystem from Tannery Wastewater: A Review

Removal of lead ions (Pb2+) from water and wastewater: a review on the low-cost adsorbents

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