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<p class="MsoNormal" style="margin-bottom:.0001pt;text-align:justify;line-height:normal;border:none;padding:0cm;">Nowadays, in many regions of the world face to drought problems that directly affect the agricultural production due to water deficiency or some conditions that cause the depletion of the existing water resources. In these water deficit areas, the use of wastewater for agricultural irrigation could contribute to decrease water shortage, protect surface and groundwater resources and supports the agricultural industries. In this study, in order to assess wastewater from textile industry could be used safely to irrigate ‘Golden Delicious’ apple seedlings grafted onto an MM 106 parent, a pot experiment in glass house was conducted in a sand clay loam soil (pH=7.22) from Bolu province. Municipal water (T0) prepared as a control sample, 1/3 diluted (T1) and raw textile wastewaters (T2) were applied to investigate the effects of irrigation treatments by measuring soil and leaves chemical properties. Although the Electrical Conductivity (EC) (4 dS/m) and pH values (8.5) at the end of the experiment were lower than the critical value in all the irrigated samples, the sodium adsorption ratio (SAR) values were higher than 13 in T1 and T2. The cubic model was determined to be suitable for the shoot lengths of the apple saplings irrigated with T0, T1 and T2 and R2 values could be obtained as 0.987, 0.987 and 0.992, respectively. This study clearly demonstrated that textile wastewater at appropriate dilutions could be used for irrigation in agricultural fields.<br /></p><p><b></b></p><b></b>

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The Effect of Irrigation by Textile Wastewater on the Growth of MM106 Apple Sapling and Soil

1170358

English

Irrigation

: Heavy metals

Malus domestica

Soil properties

Heavy Metals

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Profiles of heavy metals in Ilupeju, Ikeja and Isolo industrial wastewaters and seasonal impacts on quality of water downstream and upstream in Lagos metropolis were determined. Wastewater samples from  industrial estate were collected at the point of discharge of effluents into the streams and at spatial interval of 50 to 200 meters upstream and downstream of the discharge point over a two- year period (2005-2007) .The effluents were analyzed for heavy metals using standard methods. At the point of wastewater discharge into water bodies, during dry and rainy seasons, only Manganese showed significant difference (p < 0.05) in the first year in Ikeja.  In dry and  rainy seasons, the level of iron fluctuated from 8.95 ± 0.18 mg/L upstream to 8.96 ± 0.88 mg/L downstream in Ikeja; 1.40 ± 0.17 mg/L to 15.94 ± 1.56 mg/L in Ilupeju and 9.10 ± 0.64 mg/L to 4.98 ± 0.76 mg/L in Isolo industrial zones. In all the industrial areas considered, all the heavy metals have high accumulation factor at one season or the other except chromium and zinc. Accumulation factor for manganese increases in order of 2.38<4.10<4.70 in Ilupeju, Ikeja, Isolo respectively and in the order of 2.21<3.91<4.04 for copper in Isolo, Ilupeju, Ikeja respectively. However, iron had highest accumulation factor of 11.38 in the rainy season for Ilupeju. The upstream and downstream levels of chromium, manganese, iron and lead were higher than permissible level with traces of cadmium. The upstream and downstream water quality was poor and not suitable for drinking and routine purposes hence control of industrial wastewater is necessary to asswage its impact on proximate river bodies.

Pollution Load of Heavy Metals in Ilupeju, Ikeja and Isolo Industrial Wastewaters and Seasonal Impacts on Quality of Water Downstream and Upstream in Lagos Metropolis

Keyword : Heavy Metals

The Effect of Irrigation by Textile Wastewater on the Growth of MM106 Apple Sapling and Soil

Pollution Load of Heavy Metals in Ilupeju, Ikeja and Isolo Industrial Wastewaters and Seasonal Impacts on Quality of Water Downstream and Upstream in Lagos Metropolis

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