ORIGINAL RESEARCH: Removal of heavy metals from polluted waters using lignocellulosic agricultural waste products

2007 ◽  
Vol 3 (4) ◽  
pp. 366-374 ◽  
Author(s):  
Gary Harman ◽  
Robert Patrick ◽  
Terry Spittler
Keyword(s):  
Heavy Metals ◽  
Agricultural Waste ◽  
Original Research ◽  
Waste Products ◽  
Removal Of Heavy Metals ◽  
Polluted Waters

scholarly journals Removal of Heavy Metals from Wastewater by Adsorption

2021 ◽  
Author(s):  
Athar Hussain ◽  
Sangeeta Madan ◽  
Richa Madan
Keyword(s):  
Heavy Metals ◽  
Metal Removal ◽  
Negative Impact ◽  
Low Cost ◽  
Agricultural Waste ◽  
Heavy Metal Removal ◽  
Raw Material ◽  
Removal Of Heavy Metals ◽  
Cost Effective Technique ◽  
Adsorption Processes

Adsorption processes are extensively used in wastewater treatment for heavy metal removal. The most widely used adsorbent is activated carbon giving the best of results but it’s high cost limits its use. It has a high cost of production and regeneration. As the world today faces a shortage of freshwater resources, it is inevitable to look for alternatives that lessen the burden on existing resources. Also, heavy metals are toxic even in trace concentrations, so an environmentally safe method of their removal necessitated the requirement of low cost adsorbents. Adsorption is a cost-effective technique and gained recognition due to its minimum waste disposal advantage. This chapter focuses on the process of adsorption and the types of adsorbent available today. It also encompasses the low-cost adsorbents ranging from agricultural waste to industrial waste explaining the adsorption reaction condition. The cost-effectiveness, technical applicability and easy availability of raw material with low negative impact on the system are the precursors in selecting the adsorbents. The novelty of the chapter lies in covering a wide range of adsorbents with their efficiency in removal of heavy metals from wastewater.

CHAPTER 14. Use of Industrial and Agricultural Waste in Removal of Heavy Metals Present in Water

2014 ◽  
pp. 281-295
Author(s):  
June Fang ◽  
Bin Gao ◽  
Yining Sun ◽  
Ming Zhang ◽  
Sanjay K. Sharma
Keyword(s):  
Heavy Metals ◽  
Agricultural Waste ◽  
Removal Of Heavy Metals

scholarly journals Biosorption of Nickel (II) from Aqueous Solutions onto Pistachio Hull Waste as a Low-Cost Biosorbent

2019 ◽  
Vol 5 (2) ◽  
pp. 447 ◽  
Author(s):  
Majid Zamani Beidokhti ◽  
Seyed Taghi (Omid) Naeeni ◽  
Mohammad Sajjad AbdiGhahroudi
Keyword(s):  
Heavy Metals ◽  
Low Cost ◽  
Agricultural Waste ◽  
Process Time ◽  
Kinetics Of Adsorption ◽  
Initial Concentration ◽  
Hull Waste ◽  
Removal Of Heavy Metals ◽  
Pseudo Second Order ◽  
Kinetics Of

There are many different industrial wastewater containing heavy metals that contribute to environmental pollution and raw agricultural waste is an effective adsorbent for the removal of heavy metals. The adsorption behavior of pistachio hull powder (PHP) as a low-cost adsorbent, with respect to nickel (II) ions, has been studied in order to consider its application to the purification of metal finishing wastewater. In this work, adsorption of nickel on pistachio hull has been studied by batch techniques. The adsorption depends on the process time, the pH of the solution, initial concentration of metals and the adsorbent concentration in the suspension. The kinetics of adsorption were relatively fast, reaching equilibrium for less than 60 minutes. Kinetic and isotherm modeling studies demonstrated that the experimental data best fit a pseudo-second order and Freundlich model, respectively. The maximum Langmuir adsorption capacity was 14 mg/g. The optimum pH required for maximum adsorption was found to be 4-6. The initial concentration of the adsorbate and the concentration of pistachio hull strongly affect the process. No influence of particle size was evidenced. A degree of adsorption higher than 75% can be achieved for nickel (II) ions.

Applicability of agricultural waste and by-products for adsorptive removal of heavy metals from wastewater

2013 ◽  
Vol 148 ◽  
pp. 574-585 ◽  
Author(s):  
T.A.H. Nguyen ◽  
H.H. Ngo ◽  
W.S. Guo ◽  
J. Zhang ◽  
S. Liang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Agricultural Waste ◽  
Adsorptive Removal ◽  
Removal Of Heavy Metals ◽  
By Products

Electrodialytic Removal of Heavy Metals from Different Solid Waste Products

2003 ◽  
Vol 38 (6) ◽  
pp. 1269-1289 ◽  
Author(s):  
Lisbeth M. Ottosen ◽  
Iben V. Kristensen ◽  
Anne J. Pedersen ◽  
Henrik K. Hansen ◽  
Arne Villumsen ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Solid Waste ◽  
Waste Products ◽  
Removal Of Heavy Metals

scholarly journals BIOADSORPTION OF HEAVY METALS FROM THE PHARMACEUTICAL EFFLUENTS, CONTAMINATED SOILS AND WATER BY FOOD AND AGRICULTURAL WASTE: A SHORT REVIEW

2020 ◽  
Vol 36 (2) ◽  
pp. 3-7 ◽  
Author(s):  
P. Ziarati ◽  
D. Moradi ◽  
V. Vambol
Keyword(s):  
Heavy Metals ◽  
Contaminated Soils ◽  
Agricultural Waste ◽  
Short Review ◽  
Anthropogenic Sources ◽  
Contaminated Water ◽  
Private Households ◽  
Wide Range ◽  
Removal Of Heavy Metals ◽  
The Cost

Soil and water resources pollution by heavy metals, specially originated from anthropogenic sources, as a result of their toxicity ramification on human health, has been known as a major and serious environmental problem for last few decades. Particularly relevant is the problem of pharmaceutical wastewater, as this wastewater contains active pharmaceutical ingredients and a wide range of heavy metals. In the same time the food waste is commonly produced in all the steps of food life cycle, such as during agricultural production, industrial manufacturing, processing and distribution and even consumer-generated in the context of private households. Mostly they have high-value components such as phytochemicals, proteins, flavour compounds, polysaccharides, fibers, and which can be re-used as nutraceuticals and functional ingredients. The research aim is to study the potential of food and agricultural waste to remove heavy metals from contaminated water and soil. The study the potential of food and agricultural waste to remove heavy metals from contaminated water and soil was conducted on the basis of open scientific sources. Scientific sources were selected by keywords no later than 2003 or with high citation value. Bio-sorption is a relatively new process that has proven very promising for the removal of heavy metals from wastewater. Due to the higher affinity of the adsorbent for the adsorbate species, the latter is attracted and bound there by different mechanisms. The process continues till equilibrium is established between the amount of solid-bound adsorbate species and its portion remaining in the solution. The feasibility of using an adsorbent is based on the cost of the bio sorbent has to be optimum, as they often are made from abundant or waste material. Peel of citrus and pomegranate, vegetables peel, fruit pit shell, tea and herbal tea waste and agricultural waste mix demonstrate great potential as bio-adsorbent.

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