November 2013
Cleaning wastewater of wet scrubber in secondary lead smelters using cationic polyacrylamide
This study shows the benefits of using high molecular weight cationic polyacrylamide (PAM) in the purification of wastewater discharged from a wet scrubber in secondary lead smelter for reuse. The effect of temperature, pH, filtration pressure, polymer dose and different types of filtration fabrics on filtration rate (¦x), efficiency (¦ε) and quality of the produced water for recycling have been...
November 2013
Is roadside grass suitable for use as livestock forage in Botswana?
The aim of this research was to assess the suitability of roadside grass for use as livestock feed to combat lack of forage resources in Botswana. Fifty grass samples were collected along the roadside in the A1 Highway corridor running between the Ramatlabama and Ramokgwebana border gates (629 Km), and analysed for Ni, Cu, Pb, Zn and Cd. The maximum content levels detected in grass samples for Ni, Cu, Pb, Zn and Cd were...
November 2013
Impact of pesticide use on the health of farmers: A study in Barak valley, Assam (India)
A study was carried out in the three districts of Barak valley (Cachar, Karimganj and Hailakandi) Assam, India to ascertain the variety of pesticides that are used in the agriculture sector and their probable impact on the health of farmers. The study revealed that the farmers often use pesticides ranging from high to extremely hazardous categories like Organochlorides, Organophosphates and Carbamates. Various signs and...
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