scholarly journals Phytoremediation of Heavy Metals from Paper Mill Effluent Soil Using Croton sparsiflorus

2014 ◽  
Vol 36 ◽  
pp. 1-9 ◽  
Author(s):  
B. Ashok Kumar ◽  
S. Jothiramalingam ◽  
S.K. Thiyagarajan ◽  
T. Hidhayathullakhan ◽  
R. Nalini
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Paper Mill ◽  
Appreciable Amount ◽  
Paper Mill Effluent ◽  
Lead And Cadmium ◽  
Metallic Cations ◽  
Metal Load ◽  
Treatment And Disposal ◽  
Iron Manganese

Effluents from industries contain appreciable amount of metallic cations like zinc, copper, iron, manganese, lead and cadmium. Release of heavy metal without proper treatment poses a significant threat to public health because of its persistence biomagnifications and accumulation in food chain. To reduce metal pollution problems many processes have been developed for the treatment and disposal of metal containing wastes. Certain plants have the ability to accumulate heavy metals such as Pb, Cr, Cd and Zn. At present, phytoremediation of metals may be approaching commercialization. Hence, possibility can be explored to remove heavy metal load, present even in low concentration, in waste water of paper mill effluent soil by using Croton sparsiflorus.

scholarly journals AAS DETECTION OF HEAVY METAL IN SHEEP CHEESE (THE BANAT AREA, ROMANIA)

1970 ◽  
Vol 62 ◽  
Author(s):  
I. Gogoaşă ◽  
I. Gergen ◽  
Maria Rada ◽  
D. Parvul ◽  
Camelia Ciobanu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Essential Elements ◽  
Manganese Zinc ◽  
Lead And Cadmium ◽  
Nickel Chromium ◽  
Low Concentrations ◽  
Iron Manganese

. In this paper we present results of the measurement of some heavy metals in sheep cheese samples from three hill and alpine areas in the Banat area. We analysed, using flame and graphite furnace atomic absorption spectrometry, the following heavy metals: Fe, Mn, Zn, Cu, Co, Ni, Cr, Pb, and Cd. The concentration ranges in the cheese samples were: 7.22-8.85, 1.36-1.83, 17.39-23.17, 0.691-0.886, 0.020-0.102, 0.002-0.010, 0,214-0.225, 0.193-0.314 and 0.001-0.003 mg/kg for iron, manganese, zinc, cooper, cobalt, nickel, chromium, lead and cadmium, respectively. Analysing experimental data shows that the specific soil and climate factors in the area favour cheese assortments with normal heavy metal contents under the form of essential elements and of low concentrations of heavy metals potentially toxic or toxic much below admitted toxicity levels.

scholarly journals Biochemical tolerance of Suaeda maritima L. (Dumort) as a potential species for phytoextracting heavy metal and salt in paper mill effluent contaminated soil.

2018 ◽  
Vol 8 (6-s) ◽  
pp. 241-245 ◽  
Author(s):  
Zakir Hussain Malik ◽  
K.C. Ravindran
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Biochemical Parameters ◽  
Paper Mill ◽  
Paper Mill Effluent ◽  
Suaeda Maritima ◽  
Metabolic Functions ◽  
Irrigation Solution ◽  
Chlorophyll Protein ◽  
Ros Scavenger

Suaeda maritima is a halophyte that has been evolutionary adapted to cope with saline and heavy metal conditions. The aim of the present study was to examine the biochemical response of Suaeda maritima against phytoextracting heavy metals and salts from paper mill effluent. Suaeda maritima  seedlings have been grown for 120 days with an irrigation solution of 250 ml of 75% raw paper mill effluent after four drenching. Analysis of biochemical parameters revealed that maximum synthesis of chlorophyll, protein, phenol, proline and glycinebetaine may be involved in their ability to cope with heavy metal and salt stress. The present study confirms that the accumulation and increase of biochemical constituents can be considered as an efficient ROS scavenger and also maintain cellular homeostasis and metabolic functions in photosynthetically active leaves in Suaeda maritima, during phytoextraction studies. Keywords: phytoextraction, paper mill effluent, Suaeda maritima, biochemical, heavy metal and salts

scholarly journals Relationship between heavy metal exposure and type 2 diabetes: a large-scale retrospective cohort study using occupational health examinations

BMJ Open ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. e039541
Author(s):  
Jun Ho Ji ◽  
Mi Hyeon Jin ◽  
Jung-Hun Kang ◽  
Soon Il Lee ◽  
Suee Lee ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Type 2 Diabetes ◽  
Heavy Metal ◽  
Cohort Study ◽  
Retrospective Cohort ◽  
Metal Exposure ◽  
Heavy Metal Exposure ◽  
Lead And Cadmium

ObjectivesTo investigate the associations between heavy metal exposure and serum ferritin levels, physical measurements and type 2 diabetes mellitus (DM).DesignA retrospective cohort study.SettingChangwon, the location of this study, is a Korean representative industrial city. Data were obtained from medical check-ups between 2002 and 2018.ParticipantsA total of 34 814 male subjects were included. Of them, 1035 subjects with lead exposure, 200 subjects with cadmium exposure and the 33 579 remaining were assigned to cohort A, cohort B and the control cohort, respectively. Data including personal history of alcohol and smoking, age, height, weight, the follow-up duration, haemoglobin A1c (HbA1c), fasting blood sugar (FBS), ferritin levels, and lead and cadmium levels within 1 year after exposure were collected.Primary outcome measureIn subjects without diabetes, changes in FBS and HbA1c were analysed through repeated tests at intervals of 1 year or longer after the occupational exposure to heavy metals.ResultsIn Cohort A, DM was diagnosed in 33 subjects. There was a significant difference in lead concentrations between the subjects diagnosed with DM and those without DM during the follow-up period (3.94±2.92 mg/dL vs 2.81±2.03 mg/dL, p=0.002). Simple exposure to heavy metals (lead and cadmium) was not associated with DM in Cox regression models (lead exposure (HR) 1.01, 95% CI: 0.58 to 1.77, p 0.971; cadmium exposure HR 1.48, 95% CI: 0.61 to 3.55, p=0.385). Annual changes in FBS according to lead concentration at the beginning of exposure showed a positive correlation (r=0.072, p=0.032).ConclusionOur findings demonstrated that simple occupational exposure to heavy metals lead and cadmium was not associated with the incidence of DM. However, lead concentrations at the beginning of the exposure might be an indicator of DM and glucose elevations.

scholarly journals Assessment of Physicochemical Properties and Heavy Metal Load in Soils of Ebocha Gas Flaring Site in Rivers State, Nigeria

2020 ◽  
pp. 1-9
Author(s):  
O. I. Achieche ◽  
O. O. Njoku ◽  
C. M. Duru ◽  
M. O. Nwachukwu
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Physicochemical Properties ◽  
Negative Impact ◽  
Soil Depth ◽  
Calcium Content ◽  
Gas Flaring ◽  
Metal Load ◽  
Acidic Nature ◽  
Rivers State

The negative impact of gas flaring on the environment cannot be overemphasised. This study assessed the effect of gas flaring on the physicochemical properties and heavy metal contents in soils of Ebocha gas flaring site in Rivers State. It involved the assessment of various distances from gas flaring point to 200 meters away (50 m, 100 m, 150 m, and 200 m) which represents the extent of gas flared pollution on soils to determine the physicochemical properties and heavy metal load. The gas flaring significantly decreased soil organic carbon and calcium content when compared with non-gas flaring polluted soils. Soil acidity increased, soil exchangeable ions decreased. N, P and K were altered in gas flared soils when compared to the controls. There were detrimental effects on soils physicochemical properties. Heavy metals observed were Cd (Cadmium), Ni (Nickel), As (Arsenic), Cr (Chromium), while Pb (Lead) was not detected. The concentration of heavy metals in gas flared soils decreases down soil depth from 0-15 cm to 45-60 cm respectively. The gas flaring extremely caused the acidic nature of gas flared soils. Coefficient of variation (CV) in percentage shows significant increase in acidic nature of the gas flared soils when compared with the control soils.

scholarly journals Organic Versus Conventional – a Comparative Study on Quality and Nutritive Value of Selected Vegetable Crops of Southern India

2020 ◽  
Vol 18 (1) ◽  
pp. 99-116
Author(s):  
JR Xavier ◽  
V Mythri ◽  
R Nagaraj ◽  
VCP Ramakrishna ◽  
PE Patki ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Vitamin C ◽  
Metal Contamination ◽  
Nutritive Value ◽  
Heavy Metal Contamination ◽  
Plate Count ◽  
Microbial Quality ◽  
Edible Plant ◽  
Lead And Cadmium

Vegetables are defined as edible plant parts generally consumed raw or cooked with a main dish, in a mixed dish, as an appetizer or as a salad. Food safety aspects related to microbial quality (total plate count, yeast and mold and food borne pathogens) and toxic residue (heavy metals) and mineral content were investigated for vegetables such as green leafy vegetable, salad vegetables, sprouts, brinjal, green chilies and French beans collected from organic and conventional outlets from Mysore region, Karnataka, India. Microbial analysis was carried out using standard procedures and mminerals (Ca, K, Fe, Cu, Mg, Mn and Zn) and heavy metals (Cd and Pb) were determined. Significant variations (p>0.05) were observed for microbial quality among organic and conventional vegetables. Mineral and vitamin C content were also significantly higher (p>0.01) in organic samples. Heavy metal contamination for lead and cadmium tested positive for conventional samples while organic samples tested negative. The variables that contributed most for the variability were heavy metal contamination, mineral and vitamin C content. Organically grown vegetables were free from heavy metals and safe for consumption, as well as they are rich in mineral and vitamin C content in comparison to conventional samples. SAARC J. Agri., 18(1): 99-116 (2020)

scholarly journals Spatial distribution of Fe and Mn in paper mill effluent affected agricultural soils in Morigaon, Assam

Agropedology ◽  
2019 ◽  
Vol 26 (1) ◽  
Author(s):  
S.K. Reza ◽  
◽  
Utpal Baruah ◽  
S.K. Singh ◽  
◽  
...  
Keyword(s):  
Heavy Metals ◽  
Spatial Distribution ◽  
Spatial Dependence ◽  
Total Concentration ◽  
Gaussian Model ◽  
Spatial Prediction ◽  
Paper Mill ◽  
Paper Mill Effluent ◽  
Fe And Mn ◽  
Contaminated Area

The spatial distribution of heavy metals (Fe and Mn) in the paper mill contaminated area of Jagiroad, Assam, India were investigated using statistics, geostatistics and GIS techniques. The total concentration of Fe and Mn were determined for 188 samples collected from the contaminated area. The mean concentration of Fe (7629 mg kg1) was high. The highest and the lowest standard deviation were observed in the Fe (1749) and pH (0.81), respectively. Analysis of the isotropic variogram indicated that the Fe semivariogram was well described with the Gaussian model, with the distance of spatial dependence being 1354 m, while Mn was well described with the spherical model, with the distance of spatial dependence being 833 m. The ordinary kriging estimates of Fe and Mn maps showed that high concentrations of these metals occured in the low-lying areas like bils (lakes). For both the investigated heavy metals the prediction of goodness (G) value was greater than zero. This indicates that spatial prediction is better than assuming mean of observed value as the property value for any unsampled location. Thus the geostatistical method was spatial variability of Fe and Mn.

scholarly journals Contamination of soil and street dust with lead and cadmium near a lead smelter at Arnhem, Netherlands.

1982 ◽  
Vol 30 (3) ◽  
pp. 227-235
Author(s):  
M.G. Keizer ◽  
M. Hooghiemstra-Tielbeek ◽  
F.A.M. de Haan
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Soil Layer ◽  
Street Dust ◽  
Sampling Area ◽  
Lead Smelter ◽  
Heavy Metal Concentrations ◽  
Lead And Cadmium ◽  
Sources Of Pollution ◽  
Dust Fraction

An investigation was carried out into lead and cadmium pollution of soil and street dust in the vicinity of a secondary lead smelter in Arnhem, Netherlands. A significant correlation was found between the Pb content of the soil and the distance from the smelter. In the sampling area 1 km around the smelter the average Pb content was 370 mg/kg in the 0-5 cm soil layer and 256 mg/kg in the 5-20 cm soil layer. Mean Cd contents were 1.60 and 1.28 mg/kg, respectively. Correlation between the contents in both layers was low for Pb and high for Cd, owing to different solubilities of the metals. There was a weak relationship between the Pb and Cd contents of the soil, suggesting that only part of the metals originated from the same source. Mean heavy metal concentrations in street dust (fraction < 0.3 mm) were 761 mg Pb/kg and 3.81 mg Cd/kg. Correlation between both heavy metals in street dust was high, suggesting the same sources of pollution (mainly traffic). The most important sources of Pb and Cd pollution in the area were the lead smelter and traffic. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Kandungan Logam Berat Timbal (Pb) Dan Kadmium (Cd) Pada Air, Sedimen Dan Organ Mangrove Di Perairan Tulehu

2020 ◽  
Vol 8 (2) ◽  
pp. 149
Author(s):  
NUR ALIM NATSIR ◽  
YUSRIANTI HANIKE ◽  
MUHAMMAD RIJAL ◽  
SUHAEDIR BACHTIAR
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Key Words ◽  
Aquatic Environment ◽  
Aquatic Organisms ◽  
Atomic Absorption Spectrophotometer ◽  
Lead And Cadmium ◽  
Stems And Leaves ◽  
And Control

Differences in the accumulation of heavy metals lead and cadmium in water, sediments and mangrove organs (roots, stems and leaves) found in the waters of Tulehu, Maluku Province. Samples were taken from three observation stations, namely stopping ships that are not operating (station 1), Tulehu harbor (station 2) and Control (station 3). Pb and Cd were analyzed using Atomic Absorption Spectrophotometer. Pb and Cd content in sediments is higher than in water. The highest Pb and Cd content is found in the stems then in the roots and leaves (stems> roots> leaves). Mangroves are one of the aquatic organisms that have the ability to absorb heavy metals in the aquatic environment. Key words: Mangrove, Pb, Cd, Heavy Metal

scholarly journals IMPACT OF LOCKDOWN RESTRICTION OF COVID-19 ON SELECTIVE DISSOLVED HEAVY METALS IN COASTAL WEST BENGAL

2021 ◽  
Vol 16 (12) ◽  
Author(s):  
Nibedita Mukhopadhyay
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
West Bengal ◽  
Industrial Complex ◽  
Metal Concentrations ◽  
Dissolved Heavy Metals ◽  
Metal Load ◽  
Important Fish

In this study, the effect of COVID-19 lockdown (2020) on dissolved heavy metal load (Zn, Cu, and Pb) in the coastal West Bengal were analyzed concerning the pre-COVID 19 phases (2016-2019). Two stations namely Shankarpur (Stn.1) and Haldia (Stn. 2) were selected for the study as both have two contrasting operational features. Haldia is an important port-cum-industrial complex whereas Shankarpur is an important fish landing station-cum-tourism site. The results showed that in both the stations there was a drastic fall in the metal concentrations due to lockdown implementation, but in Haldia, the aquatic health exhibits much improvement as in lockdown there was complete shut-down of the industries. ANOVA results also highlight significant variations between the two stations as well as between the pre COVID-19 (2016-2019) and COVID-19 lockdown phases.

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