Survey on nanofiltration technology efficiency in Heavy metals (Ni, Cu and Zn) removal from waste water

The present study deals with comparative evaluation of three different aquatic macrophytes, i.e. Myriophyllum spicatum, Sagittaria sagittifolia and Pistia stratiote planted at three different concentrations (1.0, 3.0 and 5.0 mg/L) of metals in laboratory experiment for Cd, Cu and Zn removal from aqueous solution. Result revealed high removal (>90%) of different metals during 15 days experiment. Highest removal was observed on 13th day of experiment, thereafter it decreased. Results revealed Pistia stratiote as the most efficient for the removal of selected heavy metal followed by Sagittaria sagittifolia and Myriophyllum spicatum. Selected plants can be used for large scale removal of Cd, Cu and Zn from waste water.

Download Full-text

Effect of Irrigation by Waste Water on Accumulation of Heavy Metals in Soil and Plant

Science Journal of University of Zakho ◽

10.25271/2015.3.2.45 ◽

2015 ◽

Vol 3 (2) ◽

pp. 240-249

Author(s):

Khalida Hassan ◽

Rezan Mosa ◽

Shayma Rajab

Keyword(s):

Waste Water ◽

Heavy Metals

Download Full-text

Assessment of heavy metals in tobacco of cigarettes commonly sold in Ethiopia

10.31221/osf.io/w958z ◽

2019 ◽

Author(s):

Chem Int

Keyword(s):

Heavy Metals ◽

Trace Metals ◽

Atomic Absorption Spectrophotometry ◽

Epidemiological Studies ◽

Cigarette Tobacco ◽

Absorption Spectrophotometry ◽

Wet Digestion ◽

Metal Contents ◽

Cu And Zn ◽

Significant Flux

A significant flux of heavy metals, among other toxins, reaches the lungs through smoking. This study reports Cd, Pb, Cu and Zn contents in tobacco of 11 brands of cigarette commonly sold in Ethiopia. The heavy metals were determined by atomic absorption spectrophotometry after wet digestion of cigarette tobacco using HNO3 and H2O2. The concentration of trace metals in the cigarettes ranged (mean) (μg/g), Cd: 1.3−7.6 (2.48±0.32), Pb: 0.50−12.50 (6.24±2.2), Cu: 2.89−25.35 (13.70±4.12) and Zn: 24.40−62.55 (36.22±7.50) while Ni was not detected in all the eleven brands of cigarettes. Comparable levels of trace metals were obtained in the tobacco of both imported and Ethiopian cigarettes. The average trace metal contents of cigarettes available in Ethiopia were Cd 1.82±0.39, Pb 4.23±0.97, Cu 10.2±3.1 and Zn 28.2±7.8 μg/cigarette and a person who smokes 20 cigarettes per day is estimated to increase his/her daily Cd, Pb, Cu and Zn retention by approximately 0.036, 0.085, 0.204, 0.564 mg/day, respectively. The results indicate that smoking and exposure to cigarette smoke is a serious problem to be taken into account when carrying out epidemiological studies on human exposure to trace metals.

Download Full-text

HEAVY METALS IN WATER, SEDIMENTS AND MARINE FISHES FROM BULGARIAN BLACK SEA

Proceedings of International Conference "Managinag risks to coastal regions and communities in a changinag world" (EMECS'11 - SeaCoasts XXVI) ◽

10.31519/conferencearticle_5b1b93d4d78bb6.88545986 ◽

2017 ◽

Author(s):

Katya Peycheva ◽

Mona Stancheva ◽

Stanislava Georgieva ◽

...

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Black Sea ◽

Fish Species ◽

Distribution Patterns ◽

Marine Fishes ◽

Marine Water ◽

Mean Values ◽

Sprattus Sprattus ◽

Cu And Zn

In this study, the ecosystem marine water-sediment-biota was investigated and the pollution was assessed. The concentrations of eight elements were determined in marine water, sediments and four fish species collected from Black Sea (Varna), Bulgaria during 2013. Marine water recorded the highest concentrations of Zn (15-22 μg/L), As (1.1–1.2 μg/L) and Pb (0.7-0.8 μg/L) while Zn (31-52 μg/g), Pb (21-29 μg/g) and Cu (20-34 μg/g) and show the highest concentrations in sediments. Water and sediments showed similar spatial distribution patterns for the highest mean values of the different metals. In the analysed fish species, the highest concentration of the metals Cu and Zn were found in Trachurus Mediterrneus (0.42 mg/kg w.w) and in Sprattus Sprattus (12.7 mg/kg w.w), respectively while the heavy metals As and Hg were found with maximum values in Pseta Maxima (3.99 mg/kg w.w and 0.08 mg/kg w.w respectively). The results from this study were compared with our data for a previous period (2004-2006) and they show decrease in the levels of heavy metal.

Download Full-text

COPPER (Cu2+) REMOVAL FROM WATER USING NATURAL ZEOLITE FROM GEDANGSARI, GUNUNGKIDUL, YOGYAKARTA

Journal of Applied Geology ◽

10.22146/jag.7253 ◽

2015 ◽

Vol 2 (2) ◽

Author(s):

Wahyu Wilopo ◽

Septiawan Nur Haryono ◽

Doni Prakasa Eka Putra ◽

I Wayan Warmada ◽

Tsuyoshi Hirajima

Keyword(s):

Waste Water ◽

Economic Growth ◽

Heavy Metals ◽

Natural Zeolite ◽

Adsorption Equilibrium ◽

Waste Water Treatment ◽

Batch Test ◽

Maximum Capacity ◽

Geological Materials ◽

Langmuir Adsorption

Development of indusrialization and urbanization not only increase economic growth but also contribute to the environmental degradation, especially contamination of heavy metals in water. In other side, there are many geological materials have capability to immobilize heavy metals. Therefore, the objective of this research is to know the maximum capacity of natural zeolite from Trembono area, Gunung Kidul regency to immobilize copper (Cu2+) from water and to understand their mechanism. This experiment was carry out by a batch test. The result showed that the maximum capacity of zeolite to immobilize Cu (qmax) is 63,69 mmolCu/kg Zeolite according to Langmuir adsorption equilibrium model. In addition, the capability to immobilize Cu will increases due to decreasing the grain size. The result of this research can be used as an alternative for waste water treatment, especially Cu. Keywords: Removal, copper (Cu2+), natural zeolite, Langmuir isotherm

Download Full-text

The Effect of Granular Activated Carbon and Biochar on the Availability of Cu and Zn to Hordeum sativum Distichum in Contaminated Soil

Plants ◽

10.3390/plants10050841 ◽

2021 ◽

Vol 10 (5) ◽

pp. 841

Author(s):

Marina Burachevskaya ◽

Saglara Mandzhieva ◽

Tatiana Bauer ◽

Tatiana Minkina ◽

Vishnu Rajput ◽

...

Keyword(s):

Heavy Metals ◽

Activated Carbon ◽

Spring Barley ◽

Granular Activated Carbon ◽

Total Content ◽

Metal Compounds ◽

Significant Difference ◽

High Sorption ◽

Living Organisms ◽

Cu And Zn

The presence of heavy metals in the soil could impose serious problems on soil-plant systems due to the accumulation of heavy metals in plants. Even vital elements such as Cu and Zn have a toxic effect in the case of excessive intake by living organisms. The present work aimed to investigate the content of loosely bound (exchangeable, complexed, and specifically sorbed) compounds of Cu and Zn and their availability to spring barley (Hordeum sativum distichum) in contaminated Haplic Chernozem soil under the conditions of a model experiment (five approximate permissible concentrations (APC) and 10 APC of metal). Changes in the bioavailability of the metals upon application of carbon sorbents were observed. An increase in loosely bound metal compounds has been shown under conditions of soil contamination with metals (up to 57% of the total content). The increase in the availability of Cu in the soil was mainly due to the formation of complexed metal forms with organic matter (up to 17%). The availability of Zn was found to be associated with an increase in exchangeable (up to 21%) and specifically sorbed compounds (up to 27%). Granular activated carbon (GAC) and biochar have high sorption properties. A decrease in the content of loosely bound compounds of metals was established, especially in the most mobile forms such as exchangeable and complexed forms. The introduction of sorbents into the soil opened up a new venue for binding heavy metals in situ, eventually leading to a decrease in their bioavailability. The inactivation of Cu and Zn in the soil upon the application of sorbents led to a decrease in metal absorption by spring barley. The highest efficiency of biochar application was established at a dose of 2.5% and 5% in soil contaminations of 5 APC and 10 APC of Cu or Zn. The efficiency of the use of sorbents was more influenced by the dose of application than by the type of sorbent. There was no significant difference between biochar and GAC. Stabilization and inactivation of metals may improve soil fertility and plant growth.

Download Full-text

Advances in Graphene for Adsorption of Heavy Metals in Wastewater

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.550-553.2121 ◽

2012 ◽

Vol 550-553 ◽

pp. 2121-2124 ◽

Cited By ~ 4

Author(s):

Ling Ling Luo ◽

Xing Xing Gu ◽

Jun Wu ◽

Shu Xian Zhong ◽

Jian Rong Chen

Keyword(s):

Waste Water ◽

Heavy Metals ◽

Aqueous Solution ◽

Graphene Oxide ◽

Physical Structure ◽

High Specific Surface Area ◽

Functionalized Graphene ◽

Storage Material ◽

Energy Storage Material ◽

Material Composite

Graphene for its unique physical structure, excellent mechanical, electrical and physical properties has been widely applied in nanoelectronics, microelectronics, energy storage material, composite materials and so on. In recent years, many researchers found graphene have outstanding adsorption capacity of contaminants in aqueous solution due to its high specific surface area. This paper summarized the graphene, graphene oxide and functionalized graphene removing various heavy metals in waste water.

Download Full-text

Research on the stability of heavy metals (Cu, Zn) in excess sludge with the pretreatment of thermal hydrolysis

Water Science & Technology ◽

10.2166/wst.2015.537 ◽

2015 ◽

Vol 73 (4) ◽

pp. 890-898 ◽

Cited By ~ 4

Author(s):

Huimin Wu ◽

Meng Li ◽

Lei Zhang ◽

Chao Sheng

Keyword(s):

Heavy Metals ◽

Anaerobic Digestion ◽

Chemical Speciation ◽

Stable Form ◽

Thermal Hydrolysis ◽

Excess Sludge ◽

The Stability ◽

Cu And Zn

Thermal hydrolysis (TH) has been used to improve anaerobic digestion performance as well as the stability of heavy metals in sludge. Because the toxicity of heavy metals is closely related to both the concentration and the chemical speciation, more exhaustive studies on speciation distribution are urgently needed. This research aimed to investigate the effects of TH treatment (especially the time and temperature) on the concentration and stability of heavy metals in sludge, and to define the optimal TH conditions. The TH experiment indicated that the content of the stable form of Cu and Zn reached 83% and 47.4%, respectively, with TH at 210°C and 30 min. Compared with the raw sludge, the proportion of Cu and Zn increased by 11.88% and 7.3%, respectively. Results indicated that the heavy metals were combined with sludge in a more stable form with the pretreatment of TH, which improved the stability of heavy metals.

Download Full-text

Assessment of heavy metals in soils of a vineyard region with the use of principal component analysis

Scientia Agricola ◽

10.1590/s0103-90162009000300011 ◽

2009 ◽

Vol 66 (3) ◽

pp. 361-367 ◽

Cited By ~ 7

Author(s):

Gustavo Souza Valladares ◽

Otávio Antônio de Camargo ◽

José Ruy Porto de Carvalho ◽

Alessandra Maria Cia Silva

Keyword(s):

Heavy Metals ◽

Principal Component Analysis ◽

Agricultural Soils ◽

Principal Component ◽

Component Analysis ◽

Soil Samples ◽

Metal Concentrations ◽

Zn Content ◽

Heavy Metals In Soils ◽

Cu And Zn

Agricultural management with chemicals may contaminate the soil with heavy metals. The objective of this study was to apply Principal Component Analysis and geoprocessing techniques to identify the origin of the metals Cu, Fe, Mn, Zn, Ni, Pb, Cr and Cd as potential contaminants of agricultural soils. The study was developed in an area of vineyard cultivation in the State of São Paulo, Brazil. Soil samples were collected and GPS located under different uses and coverings. The metal concentrations in the soils were determined using the DTPA method. The Cu and Zn content was considered high in most of the samples, and was larger in the areas cultivated with vineyards that had been under the application of fungicides for several decades. The concentrations of Cu and Zn were correlated. The geoprocessing techniques and the Principal Component Analysis confirmed the enrichment of the soil with Cu and Zn because of the use and management of the vineyards with chemicals in the preceding decades.

Download Full-text

Heavy Metals in Water and Sediment: A Case Study of Tembi River

Journal of Environmental and Public Health ◽

10.1155/2014/858720 ◽

2014 ◽

Vol 2014 ◽

pp. 1-5 ◽

Cited By ~ 36

Author(s):

Saeed Shanbehzadeh ◽

Marzieh Vahid Dastjerdi ◽

Akbar Hassanzadeh ◽

Toba Kiyanizadeh

Keyword(s):

Heavy Metals ◽

Drinking Water ◽

Average Concentration ◽

Agricultural Water ◽

Water And Sediment ◽

The Mean ◽

Mean Concentration ◽

Cu And Zn ◽

Standard Range

This study was carried out to examine heavy metals concentration in water and sediment of upstream and downstream of the entry of the sewage to the Tembi River, Iran. Samples were collected from upstream and downstream and were analyzed for Cd, Cr, Cu, Fe, Pb, Ni, and Zn by atomic absorption spectrophotometer. The results indicated that the average concentration of the metals in water and sediment on downstream was more than that of upstream. The comparison of the mean concentrations of heavy metals in water of the Tembi River with drinking water standards and those in the water used for agriculture suggests that the mean concentration of Cu and Zn lies within the standard range for drinking water and the mean concentration of Mn, Zn, and Pb lies within the standard range of agricultural water. The highest average concentration on downstream for Pb in water and for Mn in sediment was 1.95 and 820.5 ppm, respectively. Also, the lowest average concentration on upstream was identified for Cd in water and sediment 0.07 and 10 ppm, respectively. With regard to the results, it gets clear that using the water for recreational purposes, washing, and fishing is detrimental to human health and the environment.

Download Full-text