scholarly journals Pollution from non-oil sources in the river Nun downstream of Yenegoa Town, South-South Nigeria

2014 ◽  
Vol 36 ◽  
Author(s):  
Ifeanyichukwu Clinton Ezekwe ◽  
Ngozi Nma Odu ◽  
Ayibatonye Gasa

Levels of heavy metals (mercury, chromium, lead, cadmium and iron) in the water snail (Pilaovata) in the river nun downstream of Yenegoa Town, south-south Nigeria and other parameters (temperature, ph,turbidity, Total Dissolved Solids TDS, oil and grease) in the water column was investigated in an attempt to understand the impact of urbanization and poor waste management practices on downstream communities in non-oil impacted communities in the Niger delta of Nigeria. While mercury was very minute, iron and chromium where within standards for food in the snail, lead (26-27.4 mg/l), cadmium (12.11--12.16 mg/l) and arsenic (6.92-8.41mg/l) concentrations where above the standards for food sources. Turbidity in the water column was above recommended levels for drinking water, aesthetics and aquatic health. The study concludes that the area may also have lost its capacity to support good fish production, and the water source has become a dangerous source of food and water to inhabitants due to hydrocarbon and heavy metal concentrations. Government intervention and environmental education is recommended.

2018 ◽  
pp. 40-50
Author(s):  
Andile B. Maqhuzu ◽  
Kunio Yoshikawa ◽  
Fumitake Takahashi

Landfilling remains the predominant component in the waste management hierarchy of most developing nations. The adoption of emerging waste management technologies and the use of recycling or composting is still in its infancy. Among several inadequacies of current waste management practices in Zimbabwe is the absence of sanitary disposal of municipal solid waste (MSW) in landfills. As a result, the leachate generation rate and leachate characteristics are not routinely monitored. Such information is essential when assessing the impact of leachate on ground and surface water or a facility to which the leachate can be conveyed. Indiscriminate disposal of MSW at unsanitary dumpsites poses a double threat as the discharge of hazardous leachate to potable water sources and emissionsof toxic odours leads to further environmental degradation. Poor waste management practices are compounded by a lack of financial resources and technical capabilities. The financial incapacitation of local authorities is reflected in the fact that there are no reliable statistics on MSW generation and disposal. This lack of comprehensive data has hampered the quantification of MSW and resultant leachate. Therefore, the objectives of this study are twofold. First, we seek to predict the annual quantity of landfilled MSW, and secondly to quantify the leachate flow from Zimbabwe’s landfills. Both were achieved through the use of probability models and a stochastic water balance method supported by 10,000 Monte Carlo iterations. The calculated 90%confidence interval indicates that 13-16 million tonsof MSW havebeen landfilled, with about 41-128 million m3of leachate released since 1980. This is equivalent to a mean of 414,212tons a-1of landfilled MSW and 2.2 millionm3a-1of leachate generated, respectively.


2020 ◽  
Author(s):  
Rejani Nair

<p><i>Food waste and its accumulation are becoming a critical problem. </i><i>In this context, this paper takes a look at the general view with the aim of achieving a better understanding of the different types of food waste, and tries to ponder on</i><i> the required steps or standard management practices should be taken to reduce the impact of food waste burden. The study has tried to analyse the waste management practices, cost of waste management practices etc. in small scale food processing units.</i><i></i></p>


2021 ◽  
Vol 61 (7) ◽  
pp. 637
Author(s):  
Louise Edwards ◽  
Helen Crabb

Context Water is the first nutrient and an essential component of all agricultural production systems. Despite its importance there has been limited research on water, and in particular, the impact of its availability, management and quality on production systems. Aims This research sought to describe the management and quality of water used within the Australian pig industry. Specifically, the water sources utilised, how water was managed and to evaluate water quality at both the source and the point of delivery to the pig. Methods Fifty-seven commercial piggeries across Australia participated in this study by completing a written survey on water management. In addition, survey participants undertook physical farm parameter measurements including collecting water samples. Each water sample was tested for standard quality parameters including pH, hardness, heavy metals and microbiological status. Key results Responses were received from 57 farms, estimated to represent at least 22% of ‘large’ pig herds. Bore water was the most common water source being utilised within the farms surveyed. Management practices and infrastructure delivering water from the source to the point of consumption were found to differ across the farms surveyed. Furthermore, water was regularly used as a delivery mechanism for soluble additives such as antibiotics. The quality of water at the source and point of consumption was found to be highly variable with many parameters, particularly pH, hardness, salinity, iron, manganese and microbiological levels, exceeding the acceptable standard. Conclusions In general, water quality did not appear to be routinely monitored or managed. As a result, farm managers had poor visibility of the potential negative impacts that inferior water quality or management may be having on pig production and in turn the economics of their business. Indeed, inferior water quality may impact the delivery of antibiotics and in turn undermine the industry’s antimicrobial stewardship efforts. Implications The study findings suggest that water quality represents a significant challenge to the Australian pig industry. Access to drinking water of an acceptable quality is essential for optimal pig performance, health and welfare but also to ensure farm to fork supply chain integrity, traceability and food safety.


Recycling ◽  
2020 ◽  
Vol 5 (2) ◽  
pp. 8 ◽  
Author(s):  
David O. Olukanni ◽  
Favour B. Pius-Imue ◽  
Sunday O. Joseph

The effects of poor solid waste management practices in many developing countries have been identified in the literature. This study focuses on understanding the public perception and attitudes of people towards local waste management practices. Five Local Government Areas in Ogun State, Nigeria, were selected based on population, landmass, spatial location, and distribution. The study used a survey that looked into the socio-demographics, household characteristics, and standard solid waste disposal practices at the household and municipal levels. Factors such as frequency of waste collection, presence of environmental task force/protection agency, and level of effectiveness of such task force/agency were all investigated. The study verified the impact of people’s attitudes towards waste management, as well as the effects of monitoring and control on the management of waste. The results showed that significant factors such as age, income, and education levels affect the perceptions, practices, and attitudes of the people towards solid waste management. An average of 36.6% of the people in the selected local governments dispose of their solid wastes at open dumps, with the majority of the residents (54.4%) still with the opinion that sanitation services are too costly and should be the prerogative of the local and state governments to carry out. These outcomes resonate that more efforts by the government and relevant stakeholders should be put into proper enforcement of environmental laws, as well as creating awareness on proper solid waste management practices in schools and public places.


2018 ◽  
Author(s):  
◽  
Innocent Dalumzi Njiva

In this democratic era, two of the largest previously disadvantaged communities in Port St Johns i.e. Mtumbane and Maheng were still without waste collection services. Solid waste was dumped indiscriminately and posed risks to health and the environment. To help these communities to achieve better health, this study aimed to investigate the effectiveness of environmental education on waste management practices (WMP). The key objectives entailed establishing the knowledge, attitude and behaviour of sampled households towards WMP; evaluating the intervention of the 4Rs (reuse, reduce, recycle and recover) of WMP as taught to Grades 4 to 7 residing in the previously sampled households and assessing the impact of the intervention on WMP in these households. This study was undertaken in three phases. The pre-intervention and post-intervention phases included questionnaire administration occurring over two months. The intervention comprised the teaching of the 4Rs of WMP and the completion of a daily diary by Grades 4 to 7 residing in the previously sampled households.This study focused on statistically significant differences that were reported between pre- and post- intervention. The differences were meant to establish if the respondents had any changes in knowledge regarding solid waste management. Results showed that the use of plastic bags increased which showed a significant difference (p-value 0.034).Indiscriminate dumping of waste in Mtumbane decreased whereas in Maheng, there was no difference with their practices. Among the majority of respondents from Mtumbane, waste was regarded as something useful (p-value 0.003). The education associated with waste management for both townships increased by more than 15% and that made a significant difference (p-value 0.025). Further, more than half of the respondents in Mtumbane separated their waste. The results show that there was a significant difference (p-value 0.001) in Mtumbane and not in Maheng. This significant difference may be attributed to the distribution of adequate information as the two townships vary in distance from the municipal offices i.e. Mtumbane: three kilometres and Maheng: 15 km). It was found that the number of respondents willing to pay for waste collection services increased post-intervention (p-value 0.003). It appears that in every aspect when pre- and post-intervention were reported, there was a positive difference after the intervention phase. Four recommendations are proposed: (1) organising solid waste cleaning campaigns and environmental education in schools and communities; (2) the introduction of the 4Rs to communities; (3) the provision of communal waste skips and (4) the use of incentives to foster proper waste disposal practices. It is important for all future studies to consider a method for disseminating important information to the community in order that waste management strategies can be fully and successfully implemented.


2021 ◽  
Vol 83 (4) ◽  
Author(s):  
Christopher W. Lanyon ◽  
John R. King ◽  
Dov J. Stekel ◽  
Rachel L. Gomes

AbstractThe ecological and human health impact of antibiotic use and the related antimicrobial resistance (AMR) in animal husbandry is poorly understood. In many countries, there has been considerable pressure to reduce overall antibiotic use in agriculture or to cease or minimise use of human critical antibiotics. However, a more nuanced approach would consider the differential impact of use of different antibiotic classes; for example, it is not known whether reduced use of bacteriostatic or bacteriolytic classes of antibiotics would be of greater value. We have developed an ordinary differential equation model to investigate the effects of farm practice on the spread and persistence of AMR in the dairy slurry tank environment. We model the chemical fate of bacteriolytic and bacteriostatic antibiotics within the slurry and their effect on a population of bacteria, which are capable of resistance to both types of antibiotic. Through our analysis, we find that changing the rate at which a slurry tank is emptied may delay the proliferation of multidrug-resistant bacteria by up to five years depending on conditions. This finding has implications for farming practice and the policies that influence waste management practices. We also find that, within our model, the development of multidrug resistance is particularly sensitive to the use of bacteriolytic antibiotics, rather than bacteriostatic antibiotics, and this may be cause for controlling the usage of bacteriolytic antibiotics in agriculture.


Around the globe, all the quarters are seriously concerned about the environment. The construction sector in particular, whilst contributing to largely socio-economic advancement of a country has become a foremost exploiter of natural non-renewable resources and a polluter of the atmosphere, contributing to environmental deprivation and waste generation in the process of acquirement of raw material and its deployment. Therefore, to combat the situation of regulating construction and demolition wastes a strong and stringent organizational and governmental policy is necessitated. But for implementation of the policy, enlightening the persons involved a sound and efficient HR is essential which only can implement waste management practices successfully aligning concerned departments for environmental sustainability are discussed in the paper.


2021 ◽  
Vol 8 (SI-1) ◽  
pp. 199-214
Author(s):  
Devendra Kumar Dhusia ◽  
Pankaj Kumar Gupta ◽  
Neena Mital ◽  
Renu Jain

With the technological advancement and changes in the working and lifestyles of people and industry, the rate of obsolesce of electrical and electronic equipment and gadgets, particularly computers and mobile phones, is high, posing a threat to health and environment creating a threat to sustainability for nations around the globe. Realizing the difficulties of e-waste management, many developed countries have started dumping the e-waste to developing nations that suffer from resources constraints, thus leading to hazardous activities mainly in the informal sector. Therefore, we are motivated to examine whether the awareness of the environment, attitudes, and beliefs, particularly knowledge (constructs), impact practices relating to management of e-waste in India. Analysis of the results of our survey of 180 respondents through SEM model show an insignificant association of these constructs with e-waste management practices. However, we find a significant mediating role of Environmental Knowledge in all these relationships.


This chapter reports the effective wastes management strategies. To achieve this aim, the waste management practices of 14 airlines from four regions were investigated. The data used in this chapter was a secondary published data in the annual sustainability reports. The data was retrieved from GRI (Global Reporting Initiatives) website. The special tailored data analysis techniques were used for this purpose. The chapter reported four on-board and ground strategy patterns and three hybrid patterns. Hybrid strategy patterns were better ranked than the most of on-board and ground strategy patterns. This chapter helps the decision makers and the academics alike, since the impact of each action under each action category of each pattern on wastes reduction was reported.


2001 ◽  
Vol 1 (1) ◽  
pp. 77-98 ◽  
Author(s):  
Kate O'Neill

This article examines the impact of global and economic pressures on hazardous waste management practices during the 1980s and 1990s and into the twenty-first century. It charts out four sets of recent changes in these practices. These are: first, a shift in the basic regulatory problem, from one of a more local nature to the internationalization of waste management issues; second, changes in the structure of the waste disposal industry worldwide; third, changes in policies regarding hazardous waste in EU member states; and fourth, changes in waste management policies in emerging economies. The article analyzes these changes in the light of the growing involvement of the private sector in international environmental regulation, and of the complex and sometimes contradictory impacts of international regulations on domestic politics. It argues that neither a “race to the bottom” nor a “race to the top” hypothesis fully holds, but that changing public/private and domestic/international balances are a mixed blessing.


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