HEAVY METAL CONCENTRATIONS IN HALTON REGION SOILS: AN ASSESSMENT FOR FUTURE MUNICIPAL SLUDGE UTILIZATION

1987 ◽  
Vol 67 (4) ◽  
pp. 893-903 ◽  
Author(s):  
M. D. WEBBER ◽  
A. SHAMESS
Keyword(s):  
Heavy Metal ◽  
Agricultural Land ◽  
Land Application ◽  
Parent Material ◽  
Municipal Sludge ◽  
Grid Pattern ◽  
Metal Concentrations ◽  
Mean Values ◽  
Heavy Metal Concentrations ◽  
Sludge Application

Studies were conducted to determine: (a) the heavy metal concentrations in Halton Region agricultural soils; and (b) whether a 1984 estimate of at least 39 yr for practicing land application of sludge in the Region was valid. Soil samples were taken on a regular grid pattern from the agricultural area of the Region. In a very large proportion of the samples, heavy metal concentrations were less than the maximum permissible values for sludge application to land in Ontario and in most of the samples, they were less than or approximately equal to the mean values for uncontaminated soils in Ontario. In a small proportion of the samples, heavy metal concentrations exceeded the maximum permissible values for sludge application to land in Ontario. These samples were obtained mainly west of the Niagara Escarpment in the southwest corner of the Region and the offending metals were primarily Pb and Zn. High Pb and Zn concentrations in these soils were not related to sludge application but were naturally occurring and probably were derived from Pb and Zn sulfides in the soil parent material. It was concluded that sludge may be applied on a very large proportion of the agricultural land in Halton Region and that the 1984 estimate of at least 39 yr for continuing this practice was valid. Moreover, in view of recent reductions in annual sludge quantity for land application in the Region and in sludge Cd concentration, the 39-yr estimate was considered to be conservative. Key words: Heavy metals, cadmium, Halton Region, municipal sludge, land application

Natural enrichment of topsoils with chromium and other heavy metals, Port Macquarie, New South Wales, Australia

Soil Research ◽  
1997 ◽  
Vol 35 (5) ◽  
pp. 1165 ◽  
Author(s):  
Bernd G. Lottermoser
Keyword(s):  
Heavy Metal ◽  
Surface Soil ◽  
New South ◽  
New South Wales ◽  
Soil Samples ◽  
Metal Concentrations ◽  
Mean Values ◽  
Heavy Metal Concentrations ◽  
Environmental Investigation ◽  
South Wales

Total heavy metal concentrations [cobalt (Co), chromium (Cr), copper(Cu), iron (Fe), mangnese (Mn), nickel (Ni), lead (Pb), and zinc (Zn)]were determined in surface soil samples from Port Macquarie, New South Wales,Australia. Composite topsoil samples (0–10 cm depth) had mean values(per kg) of 13 mg Co, 1020 mg Cr, 59 mg Cu, 136·7 g Fe, 719 mg Mn, 149mg Ni, 20 mg Pb, and 47 mg Zn. The topsoils were generally characterised by alow pH (3·8–5·2) and a mineralogy dominated by haematite,magnetite, quartz, and kaolinite. Chromium was predominantly present in thetopsoils as Cr3+ in microcrystalline chromite(FeCr2O4) and, to a lesser degree,in kaolinite and haematite. Differences in Cr soil concentrations with depthwere due to variations in the relative abundance of the various soilcomponents, rather than Cr3+ mobility within the soilprofile. The elevated heavy metal concentrations are the result of soildevelopment over metal-rich bedrock (serpentinite matrix melange) andassociated enrichment of relatively immobile elements (Cr, Fe, Ni) in theresidual soil profile. The ANZECC and NH&MRC (Australian and New ZealandEnvironment and Conservation Council and National Health & MedicalResearch Council) environmental investigation limits were exceeded for100% of the sample sites for Cr, 47% for Cu, 61% for Mn,and 58% for Ni.

Soil parent material is the main control on heavy metal concentrations in tropical highlands of Brazil

CATENA ◽  
2020 ◽  
Vol 185 ◽  
pp. 104319 ◽  
Author(s):  
Yuri Lopes Zinn ◽  
Jéssica Amaral de Faria ◽  
Marla Alessandra de Araujo ◽  
Alba Lucia Araujo Skorupa
Keyword(s):  
Heavy Metal ◽  
Parent Material ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations ◽  
Soil Parent Material ◽  
Tropical Highlands

Chemical characterisation of biosludge from a wastewater treatment plant in a neutral sulphite semi-chemical pulp mill by single and sequential extraction of heavy metals and micro-/macronutrients — a case study

2014 ◽  
Vol 68 (11) ◽  
Author(s):  
Risto Pöykiö ◽  
Kati Manskinen ◽  
Juha Oksanen ◽  
Hannu Nurmesniemi ◽  
Olli Dahl
Keyword(s):  
Heavy Metal ◽  
Treatment Plant ◽  
Pulp Mill ◽  
Land Application ◽  
Matter Content ◽  
Dry Matter Content ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations ◽  
Chemical Pulp

AbstractThe main impetus for utilising the biosludge from the neutral sulphite semi-chemical pulping process is the Finnish legislation which from 1st January 2016 prohibits the deposition of this residue in landfills in Finland. The dry matter content of the biosludge in this case study was low (12.1 mass %), meaning that incineration of this residue is uneconomical. The biosludge was rich in P (6260 mg kg−1). This, together with the high total organic carbon value of 459 g kg−1 and the metal concentrations (As, Cd, Cr, Cu, Ni, Pb, Zn and Hg) lower than the Finnish permissible limits for land application, supports wide and various end-uses for this residue. Except for S (27600 mg kg−1) and Cd (1.4 mg kg−1), the other heavy metal concentrations in the biosludge were lower than the maximum values for heavy metal concentrations in a non-contaminated soil referred to the literature. From the utilisation perspective, and in view of the high levels of S and Na, this residue could efficiently be used, for example, to landscape landfills.

scholarly journals ASSESSMENT OF HEAVY METAL CONCENTRATIONS IN GROUND WATER IN CRITICAL AREAS OF VISAKHAPATNAM CITY, AP, INDIA

2018 ◽  
Vol 6 (9) ◽  
pp. 239-245
Author(s):  
M. Sudhakar Reddy ◽  
T. Byragi Reddy ◽  
CH. Venkataramana
Keyword(s):  
Heavy Metal ◽  
Ground Water ◽  
Metal Concentration ◽  
Urban Areas ◽  
Heavy Metal Concentration ◽  
Metal Concentrations ◽  
Mean Values ◽  
Heavy Metal Concentrations ◽  
Critical Areas ◽  
Icp Ms

Presence of heavy metal concentration in the ground water may cause health problems during intake of through different ways. Present study focused on heavy metal concentration of ground water in the sub-urban areas of Visakhapatnam City, AP, India. Most of heavy metals i.e., Aluminum (Al), Chromium (Cr), Manganese (Mn), Iron (Fe), Nickel (Ni), Zinc (Zn), Arsenic (As), Cadmium (Cd), Mercury (Hg) and Lead (Pb) were analyzed using Inductive Coupled Plasma Mass Spectroscopy (ICP-MS). Mean values of Zn (1.845) > Mn (1.203) > Fe (0.664) > Al (0.334) > Pb (0.245) > Ni (0.082) > Cr (0.066) > As (0.028) > Cd (0.012) > Hg (0.010) results respectively. Results shows that all heavy metal concentrations were exceeded the water quality permissible limit and this area were not suitable for domestic purpose and use before proper treatment.

scholarly journals Bioremediation of Wastewaters from Local Textile Industries in Ilorin, Nigeria

2018 ◽  
Author(s):  
Abdullahi Ajao ◽  
Sunday Awe ◽  
Zulukarnain Sulugambari
Keyword(s):  
Heavy Metal ◽  
Chemical Oxygen Demand ◽  
Biochemical Oxygen Demand ◽  
Bacterial Species ◽  
Oxygen Demand ◽  
Textile Wastewater ◽  
Metal Concentrations ◽  
Mean Values ◽  
Heavy Metal Concentrations ◽  
Total Dissolved Solid

The present study evaluates the bioremediation potential of indigenous bacterial species isolated from dye-contaminated soil samples from small dyeing outlet located in Ilorin. The water pollution index was estimated based on the physicochemical characteristics and heavy metal concentrations of the raw (Day 0) and treated textile wastewater such as pH, biochemical oxygen demand-5, chemical oxygen demand, total suspended solids and total dissolved solid with mean values of 8.85±0.45 mg/L, 1200±21.3 mg/L, 2440±31.3 mg/L, 1660±17.2 mg/L and 2650±28.1 mg/L respectively, similarly, Lead was the most abundant heavy metal detected in the sample while Cadmium concentration was the lowest with the mean values of 3.52±0.00 mg/L and 2.18±0.00 mg/L respectively. The bacterial strain with highest dye decolorization capacity was screened and identified as Bacillus licheniformis ZUL012.The isolate was consequently used for the bioremediation of the wastewater over a period of 10 days. The results showed an incredible reduction in the physiochemical characteristics and heavy metal concentrations of the textile wastewater in the following ranges (8.85-6.55), (1200-300) mg/L, (2440-518) mg/L, (1660-666) mg/L and (2650-920) mg/L with the highest removal efficiency of 75 %, 78 %, 60%, 65%, recorded for biochemical oxygen demand, chemical oxygen demand, total suspended solid, total dissolved solid, respectively while that of heavy metals such as lead, cadmium, chromium and nickel were 80 %, 60 %, 67 %, 72 % reduction, respectively. Laccase and Azoreductase activities tend to decrease as the pH gradually moved towards acidic condition during the bioremediation process. Toxicity of the treated effluent was assessed using Maize and Bean seed germination test. Conclusively, these research findings can serve as a framework for the outlet design of wastewater treatment plant for local textile outlets.

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