Physico-chemical characterization of a farmland affected by wastewater in relation to heavy metals

Onweremadu, E. U.

doi:10.1631/jzus.a072210

Cited by 21 publications

(16 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mohammad and Mazahreh [29] have also recorded higher conductivity in waste water-irrigated than clean water-irrigated soil. Similar to the present study, Onweremadu [32] also showed increments in organic matter, available P and total N, at waste water-irrigated soil as compared to the clean water-irrigated soil of Imo State University, Owerri, Nigeria. Similarly, Masto et al [27] have recorded 18.2 and 240.67 % increments in total N and available P, respectively, in the soil irrigated by sewage water from a sewage treatment plant at IARI farm, New Delhi.…”

Section: Discussionsupporting

confidence: 88%

Effects of Waste Water Irrigation on Physical and Biochemical Characteristics of Soil and Metal Partitioning in Beta vulgaris L.

Singh

Agrawal

2012

Agric Res

View full text Add to dashboard Cite

The present study deals with the assessment of changes in physical and biochemical characteristics of soil and metal partitioning in Beta vulgaris L. grown in farmer's fields irrigated with waste water in Dinapur and Lohta areas of Varanasi, India, during December to February, 2007February, -2008February, and 2008February, -2009. Nutrient concentrations, organic carbon, microbial biomass, C, N, and P, enzymatic activities and heavy metal concentrations in soil and plant parts were estimated at waste water (DW 1 , DW 2 and LW) and clean water-irrigated sites (DC and LC). Sites receiving waste water irrigation showed an increase in organic C by 36 and 64 % and in available phosphorus by 15 and, 21 % at DW 1 and DW 2 sites compared to DC and 88 and 29 % at LW compared to LC during the first year. Dehydrogenase and urease activities increased two to threefold at waste water-irrigated sites compared to the respective clean water-irrigated ones during both the years of study. Microbial biomass (C, N, and P) and concentrations of exchangeable cations (Na ? , K ? , and Ca ?2 ) also showed increments varying from two to threefold at waste water-irrigated sites. During both the years, total heavy metal concentration in soil was the highest for Mn followed by Zn, Pb, Ni, Cu, Cr, and Cd at Dinapur, whereas at Lohta the trend was Mn, Zn, Cr, Pb, Cu, and Cd. The accumulation of heavy metals in the plants was several-fold higher in roots and shoots at waste water-irrigated sites, and Cd, Pb, and Ni were above the safe limits in edible tissues. Lower metal concentrations were recorded at DW 1 site compared to DW 2 and LW sites. The study suggests that waste water irrigation led to beneficial changes in physico-chemical and biological properties of the soil, but increased the soil contamination of heavy metals. However, the intermittent use of clean water in such areas may not only reduce the metal contamination in the plants but will also maintain soil fertility.

show abstract

Section: Discussionsupporting

confidence: 88%

Effects of Waste Water Irrigation on Physical and Biochemical Characteristics of Soil and Metal Partitioning in Beta vulgaris L.

Singh

Agrawal

2012

Agric Res

View full text Add to dashboard Cite

show abstract

“…Only a few studies have examined the relationships between soil density and heavy metal concentrations in soils (Onweremadu, 2008). Our data clearly showed that heavy metal concentrations in riparian soils were negatively affected by the soil bulk density (Table 3).…”

Section: Discussionmentioning

confidence: 51%

“…Our data clearly showed that heavy metal concentrations in riparian soils were negatively affected by the soil bulk density (Table 3). This may be partly because the increase of soil bulk density is typically associated with organic matter content reduction in riparian zones (Onweremadu, 2008;Xiong et al, 2015). Previous studies have reported that mineral silt and clay particles play a key role in the transport and storage of heavy metal in riparian soils (e.g., Zhang et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Heavy metal concentrations in riparian soils along the Han River, China: The importance of soil properties, topography and upland land use

Liu

Xiong

Jiang

et al. 2016

Ecological Engineering

View full text Add to dashboard Cite

Riparian zones can act as an important sink for various contaminants, including heavy metals. The retention and accumulation of heavy metals in riparian soils varies spatially and is related to many local factors, such as soil properties, topography and land use. However, the relative importance of such factors in determining the heavy metal contamination of riparian soils remains unclear. In this study, we investigated the concentrations of 10 heavy metals (i.e., Ba, Cd, Co, Cr, Cu, Mn, Ni, Pb, Sr and Zn) and their relationships to environmental features in 67 soil samples collected from 26 riparian sites along the Han River, China. Our results showed that there were significant and positive correlations among the concentrations of all heavy metals except for Ba, Mn and Sr. Heavy metal concentrations were, in general, positively associated with conductivity, fine substrate, carbon, nitrogen and phosphorus contents in soils but were negatively related to soil pH and density. Among the topographic conditions studied, elevation and distance from the river mouth were positively associated with the concentrations of Ba, Cd, Cr and Ni in riparian soils. Upland land use had a significant effect on the concentrations of Co, Cu and Zn. Generalized linear models revealed that soil properties, topography and land use together accounted for 11-69% of the variance in single metal concentrations, while redundancy analysis showed that such factors could explain 48% of the variance in overall metal levels. Our findings suggest that heavy metal concentrations in riparian soils are regulated not only by soil properties but also by physical characteristics such as topography and land use.

show abstract

“…This complexation or chelation leads to its unavailability. Onweremadu (2008) reported that organic matter promoted fixation of heavy metals in soils contaminated with waste water in Owerri, Nigeria. Therefore, Zn availability was not affected in crude oil polluted soils in relation organic matter.…”

Section: Zinc Availability In Relation To Selected Soil Properties Inmentioning

confidence: 99%

Zinc availability in relation to selected soil properties in a crude oil polluted eutric tropofluvent

Chukwuma

Eshett

Onweremadu

et al. 2010

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

ABSTRACT:The study investigated zinc availability in relation to selected soil properties in a crude-oil-polluted Eutric Tropofluvent in Egbema, Southeastern Nigeria. For this purpose, three treatments have been applied: unpolluted soil, polluted without vegetation and polluted with vegetation with five replicates arranged in a randomized complete block design. Guided by transect sampling technique, soil sampling was carried out in June 2008. Soil samples were collected from the three different land units using soil auger at a depth of 0-20 cm. Standard laboratory procedures were adopted in analysing the soils. Soil generated data were subjected to analysis of variance and correlation analysis. Results showed highly significant variation (p = 0.01) in bulk density, porosity, silt: clay ratio, pH, effective cation exchange capacity, percent base saturation, total nitrogen, organic matter, available phosphorus, calcium: magnesium ratio and zinc. It was found that zinc was higher in crude oil polluted soils than in non-polluted soil and it was below critical limits. Zinc availability in relation to selected soil properties in the crude oil polluted soils indicated that clay and organic matter did not affect zinc availability, while pH and effective cation exchange capacity did. A study on zinc dynamics in crude-oil-polluted soils will certainly provide further information on the management of crude-oil-polluted soils since it is one of the key micronutrient for crop productivity.

show abstract

Physico-chemical characterization of a farmland affected by wastewater in relation to heavy metals

Cited by 21 publications

References 22 publications

Effects of Waste Water Irrigation on Physical and Biochemical Characteristics of Soil and Metal Partitioning in Beta vulgaris L.

Effects of Waste Water Irrigation on Physical and Biochemical Characteristics of Soil and Metal Partitioning in Beta vulgaris L.

Heavy metal concentrations in riparian soils along the Han River, China: The importance of soil properties, topography and upland land use

Zinc availability in relation to selected soil properties in a crude oil polluted eutric tropofluvent

Contact Info

Product

Resources

About