Assessment of the Implications of Coal Post-mining Impact on Surface Water at Abandoned Okpara mine in Enugu State

This study examines the coal post-mining impact on surface water at abandoned Okpara mine in Enugu State. Experimental research design was adopted to test the water quality. The water samples were collected and analysed to determine the level of pollution. Hhypotheses were tested using analysis of variance (ANOVA) and the treatment means were separated using Duncan’s multiple range test (DMRT). The result of the test of hypothesis one shows that there is no significant difference in the parameters of the water samples within months. For all the parameters, α-significant at P≤0.05 fall within .207 and .995. DMRT shows that with the exception of temperature, that there is significant difference in other parameters of the water samples collected at different stations. For the parameters, alpha (α) is significant at P≤0.05. The result also shows that with the exception of Lead (Pb), that there is significant difference (p≤0.05) in the heavy metals found in the water samples collected at different stations. The total viable count (TVC) of the bacteria Pseudomonas aurogenosa and Bacillus substilis were 9.0×103cfu/ml and 1.2×104cfu/ml for the month of July, while in the month of August it was 9.0×103cfu/ml and 1.3×104cfu/ml respectively. The study concludes that the abandoned coal mine sites contribute to the type of microorganisms found in the water and concentration of heavy metals present in the water samples as well as other physicochemical parameters/indicators of water quality. Keywords: Coal post-mining, Water quality, Microbial load, Pollution, Trace metals DOI: 10.7176/JEES/11-4-08 Publication date: April 30th 202

Evaluating The Perception of Climate Change Among Secondary School Science Teachers for Knowledge-Based Sustainable Development

There appears to be lack of knowledge about the cause and effect of climate change amongst the secondary school students. This asks for evaluation of their source of knowledge in schools through the assessment of their teachers’ knowledge and/or perception about climatic change. The survey research design was adopted and the perception of the secondary school science teachers’ (SSSTs) evaluated using questionnaire. The results showed that SSSTs perception of human activities associated with climate change and the effects of human activities associated with climate is moderate. This was very clear when the grand mean responses of the teachers were found to be 2.81 and 2.61 respectively. The student t-test statistics used at P>0.05 confirmed that there is no significant difference between the perception of urban and rural SSSTs on their perception of climate change. At P>0.05, there is significant difference between experienced and less experienced SSSTs on their perception of climate change.  The research concludes that there is knowledge gap in our secondary school educational system concerning climate change. Therefore, it recommends capacity building in science-teaching education curriculum for knowledge-based sustainable development. Keywords: Curriculum, Global warming, Environmental Education, Greenhouse gases, Deforestation DOI: 10.7176/CER/13-5-03 Publication date:August 31st 2021

Sustainable Production and Consumption of Paper and Paper Products in Nigeria: A Review

Paper as a consumer product offers a undisputed benefits to human society, and it has been proven to be critical in driving most sensitive needs of mankind—principally in areas of security, education, sanitation, and communication—and thus has been produced and consumed worldwide. Its sustainable production and usage is one topic that has featured prominently in many discussion fronts and more often than not ends with recommendations for an alternative source of raw material, improvement in production procedures, and ecological concerns. Paper use is an ecological concern that has triggered many paper intervention actions around the world such as the Paper Task Force in USA, Sustainable Paper Alliance in China, and Paper and Beyond in Europe. In Nigeria, however, challenges associated with paper production, consumption, and economic prospects have not been adequately tackled. This is conspicuously evident in the huge volume of paper products imported annually into the country as a result of unsustainable local production. The cumulative impact of these issues reflect negatively on the Nigeria’s paper industry and spread indirectly to the entire country’s economy in terms of high capital freight spent on importation, volatile product price, and loss of employment opportunities. This work sought to review the challenges and opportunities associated with raw material sources, energy and water consumption, environmental pollution, paper consumption, and disposal of used paper products in Nigeria. The current review also advocated for wastepaper as a variant of raw material with a sustainable potential