Srivastava / Goyal Novel Biomaterials

Decontamination of Toxic Metals from Wastewater
2010
ISBN: 978-3-642-11329-1
Verlag: Springer
Format: PDF
Kopierschutz: Wasserzeichen (»Systemvoraussetzungen)

E-Book, Englisch, 190 Seiten, eBook

Reihe: Environmental Science and Engineering / Environmental Science

Current research revolves around trends to bring technology into harmony with the natural environment and in order to protect the ecosystem. Bioremediation involves processes which reduce the overall treatment costs by using agricultural residues. Regeneration of the biosorbent further increases the cost effectiveness of the process, thus warranting its future success in solving water quality problems. Special emphasis is paid to chemical modifications resulting in tailored novel biomaterials which improve its sorption efficiency and environmental stability. In this way it can be used commercially as a simple, fast, economical, ecofriendly green technology, for the removal of toxic metals from waste water particularly in rural and remote areas of the country.

Zielgruppe

Research

Autoren/Hrsg.

Srivastava, Shalini

Goyal, Pritee

Inhaltsverzeichnis

Heavy Metals: Environmental Threat.- Detoxification of Metals – Biochelation.- Metal Decontamination: Techniques Used So Far.- Existing Metal Removal Technologies: Demerits.- Hyperaccumulation: A Phytoremedial Approach.- Biosorption: A Promising Green Approach.- Biosorption: Mechanistic Aspects.- Biosorbents Used So Far.- Biosorption: Application Strategies.- Designing of Experiments.- Interpretations.- Sorption Isotherms and Kinetics.- Reusability of Biomaterial: A Cost-Effective Approach.- Characterization of Metal–Biomaterial Interaction.- Protein as Possible Bioactive Principle.- Novel Biomaterials – Commercialization Approach.

Leseproben

"Biosorption: A Promising Green Approach (p. 43-44)

Unfortunately, the science particularly chemistry, despite numerous contributions to the well-being and progress of humanity, has been blamed for the present ills of the world. In fact, it is not chemistry or science or technology but our past mistakes of increasing only the production without considering the simultaneous generation of large amounts of side products or waste which have underlined us as the culprit. Basically unscientific and careless rapid urbanization, industrialization, and agriculturalization are major threats to the environment.

It is not the need of poor but the greed of rich nation, which has been the main cause of environmental degradation of the world. Chemists, since 1990, have started addressing complicated environmental issues in a safe and an economically profitable manner under various names like Clean Chemistry, Environmentally Benign Chemistry, Sustainable Chemistry, Come Back to Nature, Gray to Green Chemistry, Green Technologies, Eco-friendly Techniques, Green Processes, and more popularly Green Chemistry. Green Chemistry is a special contribution of chemists to the conditions for sustainable development, incorporating an environmentally benign design approach to all aspects of chemical industry.

The word Green Chemistry was coined jointly by Prof. Paul T. Anastas and Prof. John C. Warner, which means “The invention, design and application of chemical products and processes to reduce or to eliminate the use and generation of hazardous substances.” To combine technology with environmental safety is one of the key challenges of the new millennium. There is a global trend of bringing technology into harmony with the natural environment, thus aiming to achieve the goals of protection of ecosystem from the potentially deleterious effects of human activity and finally improving its quality.

The magic plants are around and waiting to be discovered and commercialized. They are now recognized and accepted as storehouses of infinite and limitless benefits to human beings. These natural systems are often referred to as Green Technologies as they involve naturally occurring plant materials. Biosorption is one such important phenomenon, which is based on one of the 12 principles of Green Chemistry, i.e., “Use of renewable resources.”"