scholarly journals Graphene Materials to Remove Organic Pollutants and Heavy Metals from Water: Photocatalysis and Adsorption

10.5772/62777 ◽  
2016 ◽  
Author(s):  
Eduardo F. Pérez-Ramírez ◽  
Miguel de la Luz-Asunción ◽  
Ana L. Martínez-Hernández ◽  
Carlos Velasco-Santos
Keyword(s):  
Heavy Metals ◽  
Organic Pollutants

scholarly journals Safety Assessment of the Presence of Heavy Metals and Organic Pollutants in Vended Street Foods from Selected Locations in Lagos State Nigeria

2020 ◽  
pp. 109-120
Author(s):  
G. I. Oyet ◽  
C. B. Samuel
Keyword(s):  
Heavy Metals ◽  
Particulate Matter ◽  
Organic Pollutants ◽  
Food Samples ◽  
Lead Content ◽  
Food Type ◽  
Street Food ◽  
Detectable Limit ◽  
Volatile Organic ◽  
Lagos State

This study was aimed at investigating the presence of heavy metals and volatile organic pollutants in street-vended foods sourced from three selected locations in Lagos State, Nigeria, to ascertain their safety level. The study was carried out using complete randomization design and Cluster sampling technique to source vended street foods from three locations (Marina, Yaba and Apapa). The eight Food products studied were roasted (plantain, fish, yam, corn), suya meat, meat pie, egg roll and doughnuts. Lead, Cadmium, Copper, Mercury, Iron, Zinc and organic pollutants in Foods and particulate matter in Environment were examined. Heavy metals detected in vended street foods from Marina, Yaba and Apapa Lagos were; iron, copper, lead and zinc, at level ranging from 0.14 mg/kg–2.80 mg/kg, 0.08 mg/kg – 0.27 mg/kg, 0.01 mg/kg – 0.18 mg/kg, and 0.01 mg/kg – 0.04 mg/kg, respectively. Mercury and Cadmium were below detectable limit. Significantly (P<0.05) higher iron presence of 2.80 mg/kg and 1.99mg/kg were respectively, noticed in suya from Apapa and roasted fish also from Apapa. Significantly (P<0.05) higher lead (Pb) content of 0.18 mg/kg was observed in dough nut from Yaba, however, roasted plantain, roasted fish and meat pie all sourced from Yaba gave significantly (P<0.05) lower lead content of 0.01mg/kg. The Zinc content of roasted fish, suya and egg roll sourced from Marina, Yaba and Apapa were all significantly (P<0.05) difference, with particular respect to food type. Higher iron content of 2.80 mg/kg was noticed in suya from Apapa. Volatile organic compounds (TPH, PAHs, Phenol) were observed to be below detectable limit (<0.001 mg/kg) in all the vended street food samples. Particulate matter in air; SPM, PM1, PM2.5, PM10 and VOCs ranged from 0.34 – 0.84 mg/m3, 0.32 – 0.56 mg/m3, 0.32 – 0.68 mg/m3, 0.33 – 0.79 mg/m3 and <0.001 – 0.24 mg/m3, respectively. PM1 and PM25 from the three locations were not statistically significant (P>0.05). All the vended food samples had lead (Pb) content above the CODEX permissible limit of 0.01 mg/kg. The presence of high lead content in Vended Street food is a major source of occupational health hazards.

scholarly journals A review on green remediation techniques for hydrocarbons and heavy metals contaminated soil

2022 ◽  
Vol 11 (1) ◽  
pp. 43-62 ◽  
Author(s):  
Islam A. Abdelhafeez ◽  
Sayed A. El-Tohamy ◽  
Mokhtar A. Abd ul-Malik ◽  
Shaban A. A. Abdel-Raheem ◽  
Farida M.S. El-Dar
Keyword(s):  
Heavy Metals ◽  
Long Range ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Contaminated Soil ◽  
Environmental Problems ◽  
Long Range Transport ◽  
Green Remediation ◽  
Range Transport ◽  
Physical And Chemical

Organic pollutants cause many environmental problems to our environment because of their toxicity, non-degradation and ability to long-range transport. The most common organic pollutants are known as persistent organic pollutants (POPs) and are known as hydrocarbons. Effective techniques for the removal of hydrocarbons and heavy metals from soil have drawn great attention. Remediation techniques represent one of the most important of these techniques because of their gentle impact on the environment. The study highlights numerous methods for Physical and chemical remediation techniques with explanation of the ability of some plants and agricultural wastes for remediation.

Sequential removal of heavy metals ions and organic pollutants using an algal-bacterial consortium

Chemosphere ◽  
2006 ◽  
Vol 63 (6) ◽  
pp. 903-911 ◽  
Author(s):  
Raul Muñoz ◽  
Maria Teresa Alvarez ◽  
Adriana Muñoz ◽  
Enrique Terrazas ◽  
Benoit Guieysse ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Pollutants ◽  
Bacterial Consortium ◽  
Removal Of Heavy Metals ◽  
Heavy Metals Ions

Organotropism of persistent organic pollutants and heavy metals in the Greenland shark Somniosus microcephalus in NE Greenland

2014 ◽  
Vol 87 (1-2) ◽  
pp. 381-387 ◽  
Author(s):  
Simonetta Corsolini ◽  
Stefania Ancora ◽  
Nicola Bianchi ◽  
Giacomo Mariotti ◽  
Claudio Leonzio ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Greenland Shark ◽  
Somniosus Microcephalus

Nanotechnology for Water Environmental Application

2019 ◽  
pp. 171-200
Author(s):  
Saima Nasreen ◽  
Uzaira Rafique
Keyword(s):  
Thin Films ◽  
Heavy Metals ◽  
Developing Countries ◽  
Organic Pollutants ◽  
Organic Ligands ◽  
Advanced Materials ◽  
High Porosity ◽  
Environmental Application ◽  
Silica Hybrids ◽  
New Form

In developing countries like Pakistan, industries do not allocate budget for control and treatment of pollution due to limited resources. Most of the pollutants emitted from these industries are usually reusable but their capture from waste is highly uneconomical. This goal can be attained by synthesizing the advanced materials such as silica hybrids, the class of silica hybrids consisting of inorganic silica linked with organic ligands to form network structure. Their high porosity, surface area, and crystallinity provide a way for removing large amount of pollutants with small quantity of silica hybrids. These applications include the use of powder hybrids as adsorbent for removal of different pollutants such as heavy metals, persistent organic pollutants, and toxic organic chemicals. These functionalized hybrids can be further fabricated into thin films. This new form will be further used for catalytic degradation of various pollutants. Besides all these applications, these hybrids will have the potential to be used as sensors for detecting various pollutants in industries.

Characteristics of heavy metals and persistent organic pollutants in PM2.5 in two typical industrial cities, North China

2020 ◽  
Vol 21 (3-4) ◽  
pp. 250-258
Author(s):  
Xixiang Yin ◽  
Guolan Fan ◽  
Jianjun Liu ◽  
Tenglong Jiang ◽  
Lihong Wang
Keyword(s):  
Heavy Metals ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
North China ◽  
Industrial Cities

Calculation and mapping of critical loads for heavy metals and persistent organic pollutants for Dutch forest soils

1998 ◽  
Vol 61 (1-3) ◽  
pp. 99-106 ◽  
Author(s):  
W de Vries ◽  
D.J Bakker ◽  
J.E Groenenberg ◽  
G.J Reinds ◽  
J Bril ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Forest Soils ◽  
Critical Loads

scholarly journals Application of Phycoremediation Using Microalgae Scenedesmus sp. as Wastewater Treatment in Removal of Heavy Metals from Food Stall Wastewater

2015 ◽  
Vol 773-774 ◽  
pp. 1168-1172 ◽  
Author(s):  
Nur Atikah Ahmad Latiffi ◽  
Radin Maya Saphira Radin Mohamed ◽  
Najeeha Mohd Apandi ◽  
Amir Hashim Mohd Kassim
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Organic Pollutants ◽  
Batch Reactor ◽  
Sampling Time ◽  
Peak Time ◽  
Optimum Time ◽  
Pollutant Load ◽  
Removal Of Heavy Metals ◽  
Concentration Cells

This paper represents the results of using phycoremediation technology in treating the wastewater produced from food stall activity by using microalgae of Scenedesmus sp. in removal of heavy metals. Phycoremediation has advantages over physic-chemical approaches as it is can completely degrade organic pollutants without destroy the surrounding flora and fauna. Aim of this study is to determine the effectiveness of microalgae Scenedesmussp to assimilate the pollutant load based on the optimum time and concentration. Characteristics of food stall wastewater need to be identified and analyse before phycoremediation process taken place. The wastewater sampling was collected at food stall during peak time i.e. at 8 a.m. and 4 p.m. Microalgae Scenedesmus sp. to be injected to the batch reactor based on five (5) different concentration cells. The results shows that the optimum removal of heavy metals are dominant by concentration no. 1 (C1) compare to other concentration in the treatment i.e. removal of Ferum by 88.22% and 69.63%, Copper by 60% and 53.85% at both sampling time while removal of zinc is dominant by concentration no.4 (C4) by 75.61% and 76.63% respectively.

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