Removal of heavy metals from industrial effluent is major part of research carried out by researc... more Removal of heavy metals from industrial effluent is major part of research carried out by researchers to improve the environment and protect human population from adverse effects of industrialization. Zinc, Copper, Manganese and Lead are few of the major heavy metal which finds application in pharmaceutical, paint, catalyst, piping, battery, insecticides and many other industries. Various physical, chemical and biological methods can be used for their removal. Selection of suitable treatment method depends on the concentration of effluent, composition of effluent, available resources, desired final concentration and end use of effluent, disposal method and economic viability. Groundnut husk (GH) and Rice husk (RH) were used as adsorbents to remove Mn2+, Zn2+, Cu (II), Ni and Pb2+ ions from industrial wastewater. Continuous adsorption experiment was conducted to examine the effect of adsorbent mass, pH, temperature and adsorbent combination on adsorption of Mn2+, Zn2+, Cu (II), Ni an...
International Journal of Advanced Research in Chemical Science, 2018
Water pollution has been a great concern worldwide due to the disposal of heavy metals. Waste eff... more Water pollution has been a great concern worldwide due to the disposal of heavy metals. Waste effluent from numerous industries contains toxic elements such as heavy metals like Pb, Cr, Zn, Cu, Ni, and Fe. When these toxic heavy metals interact with the ecosystem , there is a high possibility that they may also accumulate in the human body through direct intake or either through food chain. This accumulation even in micro quantity may lead to severe physiological and neurological damage. Hence measures must be taken to prevent these metals from entering the natural environment [2]. Taking into account the problems caused by these toxic metals to the humans as well as to the environment, their removal from waste water is a very serious concern [3]. Various methods for the removal of these heavy metals, both economical and non-economical are available. The non-economical methods and the conventional methods are Ion Exchange, Chemical Precipitation, Solvent Extraction, Membrane Process, Electrodialysis & Reverse Osmosis. There are many disadvantages of these methods including incomplete metal removal, high energy consumption. These methods generate toxic sludge that further requires proper disposal and treatment [4]. The Economical method is Biosorption. It is a physiochemical process that utilizes less low cost biosorbent. This process occurs naturally in some biomass [5]. Biosorption has many advantages over the conventional methods like low operating cost, short operation time, no chemical sludge, reusability of biomaterial. Vigorous attempts have been taken in order to use agricultural waste which is easy to obtain and also cheap such as Rice Husk, Groundnut Shell and many others as a bio-adsorbent for the removal of toxic metals from the waste water [1]. Recently there has been an increase in the use of biomass for the cleaning up of environment, Scientist and engineer are expecting that use of bio-adsorbent for the removal of toxic metals will be an economical option. Rice hulls are there to protect the seeds during growing season as they cover the seeds. Opaline, silica and lignin are present in rice husk. The agricultural waste which comprises of groundnut shell, peanut shell, rice hull comes under the species ArachishypogaeaL. They have huge potential to isolate heavy metals from the water [6, 7]. The study is mainly based on identifying the potential of rice husk in removing heavy metals from the wastewater.
Uploads
Papers by somesh patil