IntroductionWater pollution caused due to addition of heavy metals resulting from the industrial activities is increasing tremendously and is a matter of global concern. Mining, mineral processing and metallurgical operations are generating effluents containing heavy metals. The heavy metals present in the wastewater is persistent and non degradable in nature. Moreover, they are soluble in aquatic environment and thus can be easily absorbed by living cells. Thus, by entering the food chain, they can be bioaccumulated and biomagnified in higher trophic levels also. The heavy metals, if absorbed above the permissible labels, could lead to serious health disorders. In light of the facts, treatment of heavy metals containing industrial effluent becomes quite necessary before being discharged into the environment. The scientists and environmental engineers are therefore facing a tough task of cost effective treatment of wastewater containing heavy metals. The conventional methods for heavy metal removal from wastewater includes chemical precipitation, chemical oxidation, ion exchange, membrane separation, reverse osmosis, electro dialysis etc. These methods are not very effective, are costly and require high energy input. They are associated with generation of toxic sludge, disposal of which renders it expensive and non ecofriendly in nature. In the recent past, number of approaches has been investigated for safe and economical treatment of heavy metal laden wastewater. Adsorption has emerged out to be better alternative treatment methods. It is said to be effective and economical because of its relatively low cost. Authors have claimed adsorption to be easiest, safest and most cost-effective methods for the treatment of waste effluents containing heavy metals [1,2]. The key benefit of adsorption method for heavy metal removal is less initial as well as operation cost, unproblematic design and less requirement of control systems [3]. Generally the heavy metals are present in the wastewater at low concentrations and adsorption is suitable even when the metal ions are present at concentrations as low as 1 mg/L. This makes adsorption an economical and favorable technology for heavy metal removal from *Corresponding author: Ashutosh Tripathi, Amity Institute of Environmental Sciences, Amity University, Noida-125, Gautam Buddha Nagar, (U.P.-201303),India, Tel: +0120-471-3600; E-mail: tripathiashutos@gmail.com; atripathi1@amity.edu Heavy Metal Removal from Wastewater Using Low Cost AdsorbentsAshutosh Tripathi* and Manju Rawat Ranjan Amity Institute of Environmental Sciences, Amity University, Noida-125, Gautam Buddha Nagar, U.P, India AbstractWith the onset of industrialization mankind has witnessed various environmental issues in the society. This industrialization has not only brought development and prosperity but eventually disturbed the ecosystem. One of the impacts is visible, in form of water pollution. In the present study heavy metal contamination of water bodies has been discussed. Effluents from large number of...
The generation of biomedical waste has increased many times after the SARS Cov2 commencement. The biomedical waste generated from COVID-19 Patients is very infectious and contaminated. Thus, it is a big challenge with all stakeholders to avoid spreading of COVID-19 through it. This requires monitoring the complete cycle to the grave to be monitored from the cradle, if the spreading needs to be controlled. The COVID-19 waste generation, collection, storage, transportation and disposal is a big challenge withall stakeholders including isolation wards, quarantine centres, sample collection centres, laboratories, urban local bodies, and the Common Bio-medical Waste Treatment Facility (CBWTF) respectively. As its a novel virus and WHO has instructed that proper guidelines need to be followed with regards to COVID-19biomedical waste generation and its safe disposal. The Government of India has separately developed the Guidelines for the handling of COVID-19 biomedical waste, which needs to be followed besides BiomedicalRules, 2016 so that Corona spread through this can be controlled. Owing to its novel origin and least information about its behaviour, thus it is extremely important to take all precautions possible till we get some medical treatment.
The study investigated concentrations, distribution, and bioaccumulation of heavy metals in agriculture soil and crops irrigated by the Kali River of Uttar Pradesh, India. Soils and crop samples were collected from 17 locations along the river and analyzed for heavy metal concentrations. Metals in soil and plant were recorded as
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