Environmental Sustainability Impact of the Okobaba Sawmill Industry on Some Biogeochemistry Characteristics of the Lagos Lagoon

Fb, Elijah; Elegbede, Isa

doi:10.4172/2375-446x.1000131

Cited by 8 publications

(8 citation statements)

References 35 publications

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“…Dumping of refuse (e.g. sawdust) into water bodies could block drainage and cause flooding during the rainy season, which can lead to lose of lives and properties (FAO, 1991;ELIJAH & ELEGBEDE, 2015). An environment such as a water body contaminated by organic pollutant (wood waste) has low diversity and low species of aquatic organisms (e.g.…”

Section: Environmental Challengesmentioning

confidence: 99%

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Sustainable wood waste management in Nigeria

Owoyemi

Zakariya

Elegbede

2016

Environmental &Amp; Socio-Economic Studies

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Wood industries produce large volumes of residues which must be utilized, marketed or properly disposed of. Heaps of wood residues are common features in wood industries throughout the year. In Nigeria, this residue is generally regarded as waste and this has led to open burning practices, dumping in water bodies or dumping in an open area which constitutes environmental pollution. Sawmills in Nigeria generated over 1,000,000 m3 of wood waste in 2010 while about 5000 m3 of waste was generated in plywood mills. Nigeria generates about 1.8 million tons of sawdust annually and 5.2 million tons of wood wastes. The impact of improper disposal of waste wood on the environment affects both the aquatic and terrestrial ecosystems. Also burning of waste wood releases greenhouse gases into the atmosphere causing various health issues. Reuse/recycling of these wood residues in Nigeria will reduce the pressure on our ever decreasing forests, reduce environmental pollution, create wealth and employment. The literature available on this subject was reviewed and this article, therefore, focuses on the various methods of wood waste disposal and its utilization in Nigerian wood industries, the effects of wood waste on the environment as well as on human health and the benefits of proper wood waste management practices.

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Section: Environmental Challengesmentioning

confidence: 99%

“…); either directly by the process or by the individual/groups taking it (wood waste) to the processor themselves. These wood wastes are stored (if not used immediately), processed and transformed into new usable materials (FAO, 1991;ELIJAH & ELEGBEDE, 2015).…”

Section: Environmental Challengesmentioning

confidence: 99%

Sustainable wood waste management in Nigeria

Owoyemi

Zakariya

Elegbede

2016

Environmental &Amp; Socio-Economic Studies

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“…uncontrolled chemicals used by local fisherman, ineffective sewerage systems, industrial discharges, heavy metal pollution, wood residue leachates, and sand dredging activities [1,56,[59][60][61][62] and pose a serious threat to biodiversity and the aquatic ecosystem.…”

Section: Plos Onementioning

confidence: 99%

Spatial distribution of benthic foraminifera in the Lagos Lagoon (Nigeria): Tracing the impact of environmental perturbations

2020

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Lagos Lagoon is among Africa’s largest estuarine ecosystems, bordered by one of the fastest growing megacities in the world and the ultimate repository of contaminants carried in industrial, municipal and agricultural wastes. The high levels of pollutants have progressively deteriorated the water quality, adversely affected lagoon ecosystems, impacted the livelihood of the coastal population and pose serious risks to human health. Benthic foraminifera are excellent proxies and sensitive bioindicators of environmental disturbances but comprehensive studies on the structure, distribution, diversity and impact of pollution upon foraminiferal communities have not yet been conducted in the Lagos Lagoon. To demonstrate the potential of foraminifera as proxies of environmental perturbations, benthic foraminifera were investigated on a lagoon-wide basis. Lagos Lagoon comprises areas that range from low levels of direct impact to those of severely affected by various forms of anthropogenic disturbance. The goals of this study are to analyze patterns of distribution and species richness, to document foraminiferal community structures, and to identify taxa that track documented records of pollution in Lagos Lagoon sediments. Heat maps were generated from abundance records for selected species to illustrate environmental preferences and relative resistance levels to individual forms of anthropogenic disturbance. Sediments were analyzed for a range of physicochemical properties, via a multi-parameter sensor probe-device, including temperature, pH, depth and total dissolved solids (TDS). Quantitative analysis of 24 sediment samples yielded a total 3872 individuals of benthic foraminifera that belong to 42 species and 25 genera. They comprise 10 porcellaneous, 22 hyaline perforate and 10 agglutinated species. Ammobaculites exiguus, Ammotium salsum, Ammonia aoteana, Ammonia convexa and Trochammina sp. 1 have been found to be the most abundant species. For the first time, the complete present-day foraminifera fauna is illustrated here via scanning electron microscopy. The features recorded allow to assess the spatial effects of pollution upon foraminiferal assemblages on a lagoon-wide basis. The data generated may ultimately form the basis to assess the progressive deterioration of Lagos Lagoon ecosystems from cores by using benthic foraminifera as bioindicators of environmental perturbation.

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“…Sawdust and wood process dust, highly flammable, can cause fires and explosions, especially when accumulated in large volumes. Disposing sawdust in water bodies can lead to flooding and property damage (FAO, 1991;Elijah & Elegbede, 2015). Shamsain (2002) reports studies in Nigeria indicating that occupational exposure to wood dust is linked to respiratory diseases, with workers exposed to wood dust showing increased respiratory symptoms, irritations, allergies, and sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Flexural Performance in Eco-Friendly Building Materials: The Role of Sawdust and Steel Fibre in Cement Composites

Obakin,

Ajayi

2023

AIMS Research Journal

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The emergence of environmentally sustainable construction materials has become a central focus in modern construction methods, prompted by the necessity to reduce ecological footprints and promote sustainable progress. This study investigates the flexural strength of concrete beams with varying combinations of steel fibres and sawdust, considering two curing periods of 7 and 28 days. The results show that the incorporation of steel fibres generally enhanced flexural strength, with the highest strengths of 5.4 MPa and 5.8 MPa observed in beams containing 10% steel fibre. Conversely, excessive sawdust content (10%) led to a decline in flexural strength, emphasizing the detrimental effect of sawdust on concrete's mechanical properties. Notably, beams with 0.5% steel fibre and 5% sawdust exhibited enhanced flexural strength, even surpassing the control group, highlighting the reinforcing role of steel fibres. These results provide valuable insights into optimizing the composition of sustainable cement composites to achieve superior flexural strength, contributing to more resilient and eco-friendly construction materials. Keywords: Flexural Strength, Concrete Beams, Steel Fibres, Sawdust, Sustainable Cement Composites

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Environmental Sustainability Impact of the Okobaba Sawmill Industry on Some Biogeochemistry Characteristics of the Lagos Lagoon

Cited by 8 publications

References 35 publications

Sustainable wood waste management in Nigeria

Sustainable wood waste management in Nigeria

Spatial distribution of benthic foraminifera in the Lagos Lagoon (Nigeria): Tracing the impact of environmental perturbations

Flexural Performance in Eco-Friendly Building Materials: The Role of Sawdust and Steel Fibre in Cement Composites

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