Green Chemistry: An Innovative Technology

Kidwai, Mazaahir; Mohan, Richa

doi:10.1007/s10698-004-2783-1

Cited by 41 publications

(16 citation statements)

References 35 publications

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“…Green technology, emanating directly from Green Chemistry (or, environmentally benign chemistry) may be described as the utilization of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products (Kidwai and Mohan 2005). In practice, Green Chemistry is taken to cover a much broader range of issues than the definition suggests.…”

Section: Green Technology Principlesmentioning

confidence: 99%

“…In practice, Green Chemistry is taken to cover a much broader range of issues than the definition suggests. As well as using and producing better chemicals with less waste, Green Chemistry also involves reducing other associated environmental impacts, including reduction in the amount of energy used in chemical processes (Kidwai and Mohan 2005). Anastas and Warner (1998) have developed 'The Twelve Principles of Green Chemistry' that serve as valuable and benchmark guidelines for practicing chemists, researchers and engineers in developing and assessing how green a synthesis, compound, process or technology is.…”

Section: Green Technology Principlesmentioning

confidence: 99%

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A comprehensive overview of elements in bioremediation

Juwarkar

Singh

Mudhoo

2010

Rev Environ Sci Biotechnol

295

128

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Sustainable development requires the development and promotion of environmental management and a constant search for green technologies to treat a wide range of aquatic and terrestrial habitats contaminated by increasing anthropogenic activities. Bioremediation is an increasingly popular alternative to conventional methods for treating waste compounds and media with the possibility to degrade contaminants using natural microbial activity mediated by different consortia of microbial strains. Many studies about bioremediation have been reported and the scientific literature has revealed the progressive emergence of various bioremediation techniques. In this review, we discuss the various in situ and ex situ bioremediation techniques and elaborate on the anaerobic digestion technology, phytoremediation, hyperaccumulation, composting and biosorption for their effectiveness in the biotreatment, stabilization and eventually overall remediation of contaminated strata and environments. The review ends with a note on the recent advances genetic engineering and nanotechnology have had in improving bioremediation. Case studies have also been extensively revisited to support the discussions on biosorption of heavy metals, gene probes used in molecular diagnostics, bioremediation studies of contaminants in vadose soils, bioremediation of oil contaminated soils, bioremediation of contaminants from mining sites, air sparging, slurry phase bioremediation, phytoremediation studies for pollutants and heavy metal hyperaccumulators, and vermicomposting.

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Section: Green Technology Principlesmentioning

confidence: 99%

Section: Green Technology Principlesmentioning

confidence: 99%

A comprehensive overview of elements in bioremediation

Juwarkar

Singh

Mudhoo

2010

Rev Environ Sci Biotechnol

295

128

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“…Obviously, the choice of the "green" oxidant(s) determines the environmental impact of an oxidation process to a significant extent. In general, molecular oxygen is the ideal oxidant, and many processes have been developed under relatively mild reaction conditions with oxygen or air in the presence of transition-metal complexes as the catalysts [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Photoelectrocatalytic selective oxidation of 4-methoxybenzyl alcohol in water by TiO2 supported on titanium anodes

Özcan

Yurdakal

Augugliaro

et al. 2013

Applied Catalysis B: Environmental

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a b s t r a c tThe photoelectrocatalytic partial oxidation of 4-methoxybenzyl alcohol in aqueous solution irradiated by near-UV light was carried out in a three-electrode batch reactor. TiO 2 films were either deposited by dip-coating of a TiO 2 sol onto a Ti foil and subsequent calcination or generated on Ti plates by thermal oxidation in air at 400-700 • C. The effects of the anode preparation method and bias potential values on conversion and selectivity to the corresponding aldehyde were investigated. The photoelectrocatalytic results were compared with the photocatalytic and electrocatalytic ones. The results indicated that no reaction occurred during the electrocatalytic experiments, whereas the photocatalytic reactivity was positively influenced by the application of a small bias (0.75 V vs. saturated calomel electrode). By applying the previous bias the highest initial degradation rates, r 0 , and selectivities to 4-methoxybenzaldehyde, S, were obtained in photoelectrocatalytic experiments by using Ti plate calcined at 500 • C (r 0 = 0.1507 mM h −1 , S = 85%) or TiO 2 film prepared by dip-coating and calcined at 700 • C (r 0 = 0.1339 mM h −1 , S = 90%). In order to investigate the influence of the substituent groups on reactivity and selectivity, photoelectrocatalytic runs with benzyl alcohol, 2-methoxybenzyl alcohol, 3-methoxybenzyl alcohol, 2,4-dimethoxybenzyl alcohol, 2,3,4-trimethoxybenzyl alcohol, 4-nitrobenzyl alcohol and 4-hydroxybenzyl alcohol have been performed. The selectivity and reactivity values increased by increasing the electron-donor properties of the substituent groups. This positive effect, however, was obtained only if the electron-donor group is in para or ortho position with respect to the alcoholic group.

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“…Green or environmental chemistry involves the operation of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture, and application of chemical products [3]. In practice, green chemistry covers a much broader range of issues than the definition suggests [4].…”

Section: Introductionmentioning

confidence: 99%

Environmentally Friendly Nonionic Surfactants Derived from Tannic Acid: Synthesis, Characterization and Surface Activity

Negm

Farargy

Mohammed

et al. 2012

J Surfact & Detergents

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In order to discover new and safe surfactants with regard to the environment, new environmentally friendly nonionic surface active agents were synthesized by the reaction of tannic acid (as a natural product presents in several plants) and polyethylene glycol fatty acids containing different numbers of ethylene glycol units. The fatty acids were dodecanoic, hexadecanoic, octadecanoic and oleic acids. The chemical structures of the synthesized surfactants were confirmed using elemental analysis, infrared and 1 H-NMR spectroscopy. The molecular weights of the synthesized surfactants were determined using viscosity measurements and gel permeation chromatography. The surface properties of these surfactants were determined using surface tension measurements. The chemical structure-surface activity relationship of these surfactants showed a strong dependence of the surface activity on their chemical structures including the hydrophobic chains and the number of ethylene glycol units incorporated in the molecules. The free energy of micellization of the surfactants in their solutions showed their tendency towards micellization in the bulk of their solutions, while the free energy of adsorption showed their high tendency towards adsorption at the air-water interface.

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Green Chemistry: An Innovative Technology

Cited by 41 publications

References 35 publications

A comprehensive overview of elements in bioremediation

A comprehensive overview of elements in bioremediation

Photoelectrocatalytic selective oxidation of 4-methoxybenzyl alcohol in water by TiO2 supported on titanium anodes

Environmentally Friendly Nonionic Surfactants Derived from Tannic Acid: Synthesis, Characterization and Surface Activity

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