The impact of effluents containing zinc and nickel metals on stream and river water bodies: The case of Chambishi and Mwambashi streams in Zambia

Ntengwe, F.W.; Maseka, Kenneth

doi:10.1016/j.pce.2006.08.027

Cited by 27 publications

(11 citation statements)

References 4 publications

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“…It was strongly recommended that lime be considered as one of the major inputs in the farming system of the surveyed provinces. Inorganic fertilizer recommendations based on soil analysis were also given particularly for Central, Southern and some parts of Eastern Districts of Zambia [10]. Published research on heavy metals is lacking in these predominantly rural districts of Zambia.…”

Section: Mazabuka District and Its Satellite Town Ofmentioning

confidence: 99%

Assessment of Dissolved Heavy Metal Pollution in Five Provinces of Zambia

Nachiyunde¹,

Ikeda²,

Okuda³

et al. 2013

JEP

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Zambia’s economy is hinged on mining activities with Cu being the main metal. Zn and Pb were mined at one point in Kabwe town. There are also known deposits of Co and Mn. The study focused on comparing heavy metal pollution from different regions across Zambia with a view of determining the impact of the stage of social development and economic activities on the environment. The water analysed was obtained near dump sites,farmlands, pit latrines, water reservoirs or dams, major rivers and small streams that traverse Lusaka city and towns in the Copperbelt,and water from several public taps. Analysis revealed that Mn was the largest pollution factor study areas; groundwater both near illegal dumpsites and on-site sanitation facilities did not reveal any severe pollution problems beyond drinking water permissible values (PV). Furthermore, principal component analysis (PCA) and Pearson correlation (r) found a strong correlation between Mn, and the two metals - Cu and Ni at r= 0.632 andr= 0.676 respectively. The other parameters (Cd, Cr, As, Zn & Pb) were not a significant factor in explaining the dissolved metal pollution in Zambia

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Section: Mazabuka District and Its Satellite Town Ofmentioning

confidence: 99%

Assessment of Dissolved Heavy Metal Pollution in Five Provinces of Zambia

Nachiyunde¹,

Ikeda²,

Okuda³

et al. 2013

JEP

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“…Nonspecific conditions such as stunted growth and changes in the taste of fish from polluted streams in the Copperbelt mining region in Zambia are attributed to heavy metal pollution [39]. In addition to increased fish mortality, Norrgren et al [38] reported multiple pathological changes in tilapia fish in the Kafue River, including excessive mucus production, epithelial sloughing, lamellar edema and telengiectasia in the gills of tilapia fish.…”

Section: Impact Of Pollution In Fishmentioning

confidence: 99%

Current Levels of Heavy Metal Pollution in Africa

2010

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ABSTRACT. Studies of environmental pollution in Africa indicate that toxic metal pollution has reached unprecedented levels over the past decade. Human exposure to toxic metals has become a major health risk on the continent and is the subject of increasing attention from national and international environmentalists. This paper reviews data from the past decade on environmental pollution in Africa and highlights countries where most heavy metal pollutions have been reported. Characteristics of heavy metal pollution in North, West, East and Southern regions of Africa have been described, as have major sources of pollution in the different regions. This review summarizes the sites where most of the heavy metal pollution has been reported in Africa and, where applicable, presents reported levels of pollution in different environmental compartments in the context of internationally acceptable limits. Contaminations in fish and food animals as well as impacts of heavy metal pollution on humans are also described.KEY WORDS: Africa, environment, heavy metals, pollution.J. Vet. Med. Sci. 72(10): 1257-1263, 2010 For many years, Africa was considered safe from heavy metal pollution [6]. However, rapid population growth and high urbanization rates have resulted in a recent expansion of cities in the absence of proper planning and without adequate waste disposal facilities [25]. Consequently, solid waste management has become a major challenge in many African countries, as waste production exceeds capacities for collection and disposal by local authorities [49]. As observed by the United Nations Centre for Human Settlements (UNCHS) [56], only one-third of the solid waste generated in urban areas across Africa is collected, and of that, only 2% is recovered and recycled. Furthermore, use of leaded gasoline [36], fugitive dusts [13], indiscriminate dumping and burning of toxic waste, including nickel/cadmium-based batteries, due to weak pollution legislation has worsened heavy metal pollution on the continent [22].Recently, the United Nations Environment Program (UNEP) Global Environment Outlook (GEO) 4 [58] noted that Africa continues to be at risk from hazardous and electronic waste dumping due to inadequate monitoring capabilities and institutional mechanisms for managing such waste. There are limited resources for environmental management in most African countries, as most developmental programs are focused on economic growth and industrialization [52]. As a result, industrial expansion and increased extraction of natural resources have resulted in widespread heavy metal pollution [3,59].According to a comprehensive study on the environmental burden of disease by the World Health Organization (WHO) [62], environmental risk factors account for a quarter of the total burden of disease and 2.97 million human deaths every year in Africa. Since toxic metals constitute serious health hazards, the extent of toxic metal contamination of the African environment has been the subject of considerable interest. Although improvements i...

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“…Metals in cement were shown to be leachable in various media, in the descending order of Cu 2+ , Cd 2+ , Pb 2+ , Zn 2+ , Mn 2+ and Sb 3 , but were not leached in simulated seawater, groundwater or acid rain [30]. The microstructure of cementation wastes containing Pb 2+ , Cd 2+ , As 5+ and Cr 6+ has been investigated [9,31,32]. Metal leaching in the pH range of 6-8, was shown to decrease in the following order: Cr 6+ > Cd 2+ > Pb 2+ > As 5+ [9,33].…”

Section: Introductionmentioning

confidence: 99%

Potential Effect of Porosity Evolution of Cemented Paste Backfill on Selective Solidification of Heavy Metal Ions

Yang

Zhao

Jiao

et al. 2020

IJERPH

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Cemented paste backfill (CPB) is a common environmentally friendly mining approach. However, it remains undetermined whether CPB pollutes underground mine water. Tank leaching analysis of a CPB mass in distilled water was performed for 120 d, and water quality was tested in situ for a long-term pollution assessment. Computerized tomography was also used to determine the CPB micro-pore structure and ion-leaching mechanism. The dissolved Zn2+, Pb2+ and As5+ concentrations in the leachate peaked at 0.56, 0.11 and 0.066 mg/L, respectively, whereas the Co2+ and Cd2+ concentrations were lower than the detection limit. The CPB porosity decreased from 46.07% to 40.88% by soaking, and 80% of the pore diameters were less than 13.81 μm. The permeability decreased from 0.8 to 0.5 cm/s, and the quantity, length, and diameter of the permeate channels decreased with soaking. An in-situ survey showed novel selective solidification. The Zn2+ concentration in the mine water was 10–20 times that of the background water, and the Pb2+ concentration was 2–4 times the regulated value. Although the Pb2+ content decreased significantly with mining depth, there remains a serious environmental risk. Mine water pollution can be reduced by adding a solidifying agent for Pb2+ and Zn2+, during CPB preparation.

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The impact of effluents containing zinc and nickel metals on stream and river water bodies: The case of Chambishi and Mwambashi streams in Zambia

Cited by 27 publications

References 4 publications

Assessment of Dissolved Heavy Metal Pollution in Five Provinces of Zambia

Assessment of Dissolved Heavy Metal Pollution in Five Provinces of Zambia

Current Levels of Heavy Metal Pollution in Africa

Potential Effect of Porosity Evolution of Cemented Paste Backfill on Selective Solidification of Heavy Metal Ions

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