scholarly journals Modern Trends in Uses of Different Wastes to Produce Nanoparticles and Their Environmental Applications

2020 ◽  
Author(s):  
Salah Abdelbary ◽  
Hadeer Abdelfattah
Keyword(s):  
Heavy Metals ◽  
Industrial Wastes ◽  
Environmental Applications ◽  
Medical Applications ◽  
Food Wastes ◽  
Synthesis Of Nanoparticles ◽  
The World ◽  
Removal Of Heavy Metals ◽  
Health Related ◽  
Fruit Wastes

Wastes are produced at large amounts all over the world. These wastes cause a variety of problems to the ecosystem, plants, animals, and humans. In this chapter, we discuss the wastes, types of wastes, sources of wastes, and problems related to wastes, especially health-related problems. Then we discuss agricultural wastes and how we can synthesize different nanoparticles from them. Also, we discuss industrial wastes and different nanoparticles synthesized from them. Additionally, we discuss fruit wastes and production of different nanoparticles and also food wastes and their uses in nanoparticle syntheses. Also, we can use other wastes to produce nanoparticles. In applications section, we discuss the use of different nanoparticles produced in agriculture, removal of heavy metals and pollutants from environment, industry and finally medical applications. We will finish our chapter with the topic of healthy and safe synthesis of nanoparticles produced by different wastes and then conclusion.

scholarly journals Nanomaterials for the Removal of Heavy Metals from Wastewater

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 424 ◽  
Author(s):  
Jinyue Yang ◽  
Baohong Hou ◽  
Jingkang Wang ◽  
Beiqian Tian ◽  
Jingtao Bi ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal Ions ◽  
Polluted Water ◽  
Severe Problem ◽  
Metal Metal ◽  
The World ◽  
Removal Of Heavy Metals ◽  
Carbon Based Nanomaterials ◽  
Promising Perspective ◽  
Future Work

Removal of contaminants in wastewater, such as heavy metals, has become a severe problem in the world. Numerous technologies have been developed to deal with this problem. As an emerging technology, nanotechnology has been gaining increasing interest and many nanomaterials have been developed to remove heavy metals from polluted water, due to their excellent features resulting from the nanometer effect. In this work, novel nanomaterials, including carbon-based nanomaterials, zero-valent metal, metal-oxide based nanomaterials, and nanocomposites, and their applications for the removal of heavy metal ions from wastewater were systematically reviewed. Their efficiency, limitations, and advantages were compared and discussed. Furthermore, the promising perspective of nanomaterials in environmental applications was also discussed and potential directions for future work were suggested.

scholarly journals Evaluation of Fresh Water Actinomycete Bioflocculant and Its Biotechnological Applications in Wastewaters Treatment and Removal of Heavy Metals

2019 ◽  
Vol 16 (18) ◽  
pp. 3337 ◽  
Author(s):  
Mayowa Oladele Agunbiade ◽  
Carolina Pohl ◽  
Esta Van Heerden ◽  
Oluwaseun Oyekola ◽  
Anofi Ashafa
Keyword(s):  
Heavy Metals ◽  
Oxygen Demand ◽  
Optical Emission ◽  
Dairy Wastewater ◽  
Polyaluminum Chloride ◽  
Flocculating Activity ◽  
Wastewaters Treatment ◽  
Removal Of Heavy Metals ◽  
Health Related ◽  
Rdna Analysis

This study evaluated the potential of a biopolymeric flocculant produced by Terrabacter sp. isolated from Sterkfontein Dam, South Africa. Microbial flocculants aid the aggregation of suspended solutes in solutions, thus, suggesting its alternative application to inorganic and synthetic organic flocculants, which are associated with health-related problems. The 16S rDNA analysis revealed the bacteria to have 98% similarity to Terrabacter sp. MUSC78T and the sequence was deposited in the Genbank as Terrabacter sp. with accession number KF682157.1. A series of experimental parameters such as bioflocculant dosage, cations concentrations, pH, and application of the purified bioflocculant in wastewaters treatment were investigated. In the presence of glucose as a sole carbon source, Ca2+ as cation at pH 8, the optimal flocculating activity attained was 85%. Optimum bioflocculant dosage of 0.5 mg/mL was able to remove chemical oxygen demand (COD), biological oxygen demand (BOD), suspended solids (SS), nitrate, and turbidity in dairy wastewater. In addition, the tested bioflocculant exhibited higher flocculating efficiency as compared to polyaluminum chloride, polyethylenime, and alum. Inductible coupled plasma optical emission spectroscopy (ICP-OES) analyses confirmed significant removal of 77.7% Fe, 74.8% Al, 61.9% Mn, and 57.6% Zn as representatives of heavy metals from treated dairy wastewater. Fourier transform infrared spectroscopy (FTIR) indicated the presence of carboxyl, hydroxyl, and amino groups in the purified bioflocculant which could be responsible for flocculation. Findings from this study showed the prospect of the studied bioflocculant as an alternative candidate in wastewater treatment and remediating of heavy metals.

scholarly journals Removal of heavy metals from wastewater using agricultural and industrial wastes as adsorbents

HBRC Journal ◽  
2013 ◽  
Vol 9 (3) ◽  
pp. 276-282 ◽  
Author(s):  
Hala Ahmed Hegazi
Keyword(s):  
Heavy Metals ◽  
Industrial Wastes ◽  
Removal Of Heavy Metals

scholarly journals Potential Use of Agro/Food Wastes as Biosorbents in the Removal of Heavy Metals

2020 ◽  
Author(s):  
Faizan Ahmad ◽  
Sadaf Zaidi
Keyword(s):  
Heavy Metals ◽  
Metal Ions ◽  
Adsorption Capacity ◽  
Membrane Filtration ◽  
Toxic Metal ◽  
Lead Ion ◽  
Food Wastes ◽  
Toxic Metal Ions ◽  
Alternative Technologies ◽  
Removal Of Heavy Metals

The production of large quantities of agro/food wastes from food processing industries and the release of pollutants in the form of heavy metals from various metallurgical industries are the grave problems of the society as well as serious threats to the environment. It is estimated that approximately one–third of all food that is produced goes to waste, meaning thereby that nearly 1.3 billion tonnes of agro/food wastes are generated per year. This readily available and large amount waste can be utilized for the removal of toxic metals obtained from metallurgical industries by converting it into the adsorbents. For example, mango peel showed adsorption capacity of 68.92 mg/g in removing cadmium II ions. Similarly, coconut waste showed a higher adsorption capacity of 285 and 263 mg/g in removing cadmium and lead ion, respectively. Biosorption and bioaccumulation are recommended as novel, efficient, eco-friendly, and less costly alternative technologies over the conventional methods such as ion exchange, chemical precipitation, and membrane filtration, etc. for the removal of toxic metal ions. Because of the presence of metal-binding functional groups, the industrial by-products, agro-wastes and microbial biomass are considered as the potential biosorbents. Thus they can be used for the removal of toxic metal ions. This chapter highlights the available information and methods on utilizing the agro/food waste for the eradication of toxic and heavy metal ions. Furthermore, this chapter also focuses on the sorption mechanisms of different adsorbents as well as their adsorbing capacities.

scholarly journals Biosynthesis of Gold and Silver Nanoparticles and Its Applications

2021 ◽  
pp. 15-24
Author(s):  
Anum Afreen
Keyword(s):  
Silver Nanoparticles ◽  
Optical Properties ◽  
Metal Salt ◽  
Visible Region ◽  
Environmental Applications ◽  
Medical Applications ◽  
Gold And Silver Nanoparticles ◽  
Simple Process ◽  
Synthesis Of Nanoparticles

The synthesis of nanoparticles is in the limelight in modern nanotechnology. Biosynthesis of nanoparticles by using different methods is currently under exploitation. Nanoparticles can be synthesized by Bacteria, Virus, Fungi, Algae and Plants. Biosynthesis of Nanoparticles is a simple process in which intracellular and extracellular extract of an organism is mix with a metal salt.        Their optical properties are reported to be dependent on the size, which imparts different colors due to absorption in the visible region. Their reactivity, toughness and other properties are also dependent on their unique size, shape and structure. Due to these characteristics, they are suitable candidates for various commercial and domestic applications, which include catalysis, imaging, medical applications, energy-based research, and environmental applications. This review explains the various microorganisms like bacteria, algae, fungi; virus, plants and yeast involved in the synthesis of these Nanoparticles also elucidate the characterization of Nanoparticles and its applications.

scholarly journals Various Absorbents and Parameters Affecting Removal of Water Hardness from Wastewater: Review

2020 ◽  
Vol 6 (3) ◽  
Author(s):  
Tamiru M ◽  
Bekele G
Keyword(s):  
Heavy Metals ◽  
Nanostructured Materials ◽  
Adsorption Process ◽  
Review Paper ◽  
Low Cost ◽  
Water Hardness ◽  
The World ◽  
Removal Of Heavy Metals ◽  
Different Sources

Discharges of heavy metals from different sources to the water lead to water hardness which is the major problem of the world due to their toxic and carcinogenic nature. Among several methods to eliminate heavy metals, absorption is the leading technique for the removal of heavy metals from wastewater because it is efficient, available, low-cost, and eco-friend. This review paper gives detail information about adsorbents on both conventional and nanostructured materials, either occur naturally or available commercially. The review also contains properties and parameters which affect the adsorption process with essential clarifications that are given by researchers.

Removal of heavy metals from contaminated water using industrial wastes containing calcium and magnesium

2022 ◽  
pp. 130472
Author(s):  
Théo Guérin ◽  
Nadège Oustrière ◽  
David Bulteel ◽  
Damien Betrancourt ◽  
Alina Ghinet ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Industrial Wastes ◽  
Contaminated Water ◽  
Removal Of Heavy Metals ◽  
Calcium And Magnesium

Characterization of iron and steelmaking wet dust for arsenic remove in wastewaters

2012 ◽  
Vol 1380 ◽  
Author(s):  
V. Narvaez-García ◽  
A. Martínez-Luevanos ◽  
F. Carrillo-Pedroza ◽  
M. Soria-Aguilar ◽  
M. Guajardo-Castillo ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Water Treatment ◽  
Specific Area ◽  
Process Efficiency ◽  
Environmental Applications ◽  
Total Arsenic ◽  
Initial Concentration ◽  
Removal Of Heavy Metals ◽  
Removal Of Arsenic

ABSTRACTDust originated from the iron and steelmaking containing undesirable compounds are not completely recycled because affects the process efficiency. These types of dust represents an economical lost as a consequence of values contents. However, dust have been characterized physically and chemically in order to study their potential environmental applications, as the removal of arsenic in wastewater. The results shows that dust have a superficial specific area between 16 and 20 m2/g, values considered high, typical of a material with adsorbent properties. Representative results of different tests adsorption of arsenic in the material described indicate that it is possible to reduce the arsenic levels in up to 95% from an initial concentration of 1 mg/L of total arsenic. The results indicate that the iron and steelmaking wet dust may represent a new option as material for the removal of heavy metals in water treatment.

Geochemical variability of heavy metals in soil after land use conversions in Northeast China and its environmental applications

2014 ◽  
Vol 16 (4) ◽  
pp. 924-931 ◽  
Author(s):  
Wei Jiao ◽  
Wei Ouyang ◽  
Fanghua Hao ◽  
Bing Liu ◽  
Fangli Wang
Keyword(s):  
Heavy Metals ◽  
Land Use ◽  
Northeast China ◽  
Environmental Applications ◽  
Metal Concentrations ◽  
Soil P ◽  
The World

Unlike most other areas in the world, the long-term agricultural reclamation in Northeast China has significantly decreased some metal concentrations in soil.

Biosorption: An Eco-Friendly Technique for the Removal of Heavy Metals

2011 ◽  
Vol 2 (3) ◽  
pp. 1-8 ◽  
Author(s):  
Sasmita Sabat ◽  
◽  
R V Kavitha R V Kavitha ◽  
Shantha S L Shantha S L ◽  
Gopika Nair ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Removal Of Heavy Metals
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