Abstract: A study to assess the various gases emitted by motorcycles in a metropolitan State, Uyo, in Nigeria was carried out. Two hundred commercial motorcycles the mostly available means of transport were used for the study drawn from seven motorcycle parks. The gases examined were nitrogen dioxide, sulphur dioxide, carbon monoxide, chlorine, hydrogen sulphide and ammonia. The overall collection results per motorcycle parks showed the following gases concentrations: Motor Park –A; NO₂; 12.7ppm, SO₂; 13ppm, CO; 1337ppm, H₂S; 20.2ppm, NH₄; 97ppm, Cl₂; 20.3ppm, HCN; 80ppm. Motorcycle Park B-NO₂; 12.1ppm, SO₂, 11ppm, CO; 1508ppm, H₂S; 20.4ppm, NH₄; 116ppm, Cl₂; 19.6ppm, HCN; 71ppm. Motorcycle: Park-C NO₂; 11.7ppm, SO₂; 8.7ppm, CO; 1084ppm, H₂S; 14.1ppm, NH₄; 48ppm, Cl₂; 18.6ppm, HCN; 65ppm. D: NO₂; 5.1ppm, SO₂; 4.7ppm, CO; 550ppm, H₂S; 18.4ppm, NH₄; 48ppm, Cl₂; 25.9ppm, CO; 550ppm, H₂S; 18.4ppm, NH₄; 48ppm, Cl₂; 25.9ppm, HCN; 101ppm. Motorcycle Park E:NO₂; 5.4ppm, CO; 596ppm, H₂S; 4.9ppm, NH₄; 48ppm, Cl₂; 79ppm, HCN; 101pm. Motor Park F: NO₂; 51ppm, SO₂; 5.4ppm, CO; 596ppm, H₂S; 4.9ppm, NH₄; 48ppm, Cl₂; 7.3ppm, HCN; 40ppm. Motorcycle Park G: NO₂; 11.9ppm, SO₂; 10.5ppm, CO; 1616ppm, H₂S; 18.4ppm, NH₄; 185ppm, Cl₂; 25.9ppm; HCN; 101ppm. The most harmful gas; carbon monoxide was significantly high in all the parks and the general results showed an alarming degree of polluted gases emission.

Abstract: Developed a method of synthesis of layered double hydroxides (LDH) of different composition. The investigations the processes of adsorption of phenols on LDH variable composition. Were designed kinetic parameters the processes of adsorption of phenols.

Abstract: Sugarcane straw ash (SCSA), an agricultural waste of sugar industry with disposal problems, was utilized as a source for the synthesis of zeolitic material. Zeolitic material was synthesized by alkali fusion followed by hydrothermal treatment. The effect of crystallization time was studied and the conditions optimized. The materials were characterized by XRD, XRF, SEM, FT-IR, Brunauer-Emmett-Teller (BET) surface area techniques, particle size analyzer, TG /DSC and nitrogen physisorption. The presence of zeolite NaP1 in adsorbent confirms successful conversion of native SCSA into zeolitic material. The physico-chemical properties of SCSA and zeolitic material were compared. The particle size distribution of zeolitic material was in the range of 0.796 – 399 µm and nitrogen adsorption indicated a surface area around 350 m² g^-1. Zeolitic material from sugarcane straw ash was examined by removal of Crystal violet from aqueous solution.

Abstract: The atmospheric deposition of some heavy metals was investigated using lichen (Parmelia caperata) and moss (Polytrichum juniperinum, Calymperes erosum and Racopilum africanum) samples collected from two oil–producing host communities viz Eket and Ibeno Local Government Areas of Akwa Ibom State, Nigeria. Lichen and moss samples were analysed using atomic absorption spectrometry equipped with flame and graphite furnace after decomposition using acid digestion technique. The concentrations of heavy metals in lichen and moss samples ranged from 0.001 – 0.092 μg g⁻¹ for cadmium (Cd); 0.004 – 8.793 μg g⁻¹ for chromium (Cr); 0.989 – 1.950 μg g⁻¹ for cobalt (Co); 2.350 – 110.760 μg g⁻¹ for copper (Cu); 10.530 – 153.320 μg g⁻¹ for manganese (Mn); 1.425 – 21.730 μg g⁻¹ for nickel (Ni); 0.001 – 17.380 μg g⁻¹ for lead (Pb), and 23.530 – 130.600 μg g⁻¹ for zinc (Zn). The statistical significance of correlations between Cu–Pb, Cu–Zn, Pb–Ni and Mn–Zn concentrations confirmed anthropogenic sources mainly due to emissions from vehicular traffic, fossil fuel combustion, solid waste disposal and other local anthropogenic activities. In a direct comparison, some of the target heavy metals such as Cd, Cr, Mn, Ni and Zn were accumulated at higher concentrations in moss samples compared to lichen from the same sampling site. The results obtained reveal important contributions towards understanding of heavy metal deposition patterns and provide baseline data that can be used for potential identification of areas at risk from atmospheric heavy metals contamination in the region. The use of epiphytic lichens and mosses provides a cost–effective approach for monitoring regional atmospheric heavy metal contamination and may be effectively used in large scale air pollution monitoring programmer.

Abstract: This study provides a general review and a case study of women’s involvement in environmental management in Plateau state. Primary data were generated from Questionnaire survey of women from six local government areas. Majority of the women (79.2%) are involved in farming and contributed significantly to land/soil conservation. (78.4%) of them have planted tree or flowers in the last five years while (79.2%) indicated clearing their surroundings daily in terms of sweeping, clearing drainages and refuse disposal. Problems faced by the women include lack of waste disposal equipment, poor drainage systems and lack of awareness among the general public. Appropriate recommendations were proffered to enhance women involvement in environmental protection and management.