Abstract:The potential of various binary and ternary mixed oxide nanocomposites for the removal of heavy metals from contaminated water has been reviewed. Various conventional methods for heavy metal removal such as precipitation, evaporation, electroplating and also ion exchange have been applied since previous years. However, these methods have several disadvantages such as only limited to certain concentrations of metals ions, generation, large amount of toxic sludge and the capital costs are much too high to be economical. Hence, adsorption using binary and ternary mixed oxide nanocomposite is found to be more environmentally friendly. High adsorption capacities, cost effectiveness and their abundance in nature are the important parameters which explain why the adsorbent is economical for heavy metal removal. In this review, a list of adsorbent literature has been compiled to provide a summary of available information on a wide range of binary and ternary mixed oxide nanocomposites for removing heavy metals from contaminated water. Keywords:Heavy metals, Preconcentration, Binary oxide, Ternary oxide, Nanocomposites.
Title:Assessment of Heavy Metals Removal by Binary and Ternary Mixed OxideNanocomposites Author:Dugasa Gerenfes ISSN 2394-966X International Journal of Novel Research in Life Sciences Novelty Journals
Abstract:The African palm weevil Rhynchophorous phoenicis Fabricius larva is a popular delicacy among the Akans of Ghana and consumption of this insect is an important tradition in the Birim South, East Akim and Kwahu West districts of Southern Ghana. Closed and open-ended questionnaires were administered in these districts to investigate peoples’ perception about entomophagy and its potential in combating food insecurity. The African palm weevil larva was the major edible insect identified to be widely consumed by the 500 respondents in all the districts. A paltry 8.3% indicated that entomophagy was primitive. About 87.5% of the respondents consumed the larvae, 11.3% consumed the adult and 1.2% preferred the pupae. In terms of consumption patterns, 54.1% of the respondents regularly consumed the larvae as part of their diet, 27.8% and 10.5% consumed it for nutrition and flavour respectively whilst 7.6% consumed it out of curiosity. Consumption of the palm weevil larvae has the potential to contribute to the alleviation of malnutrition and food insecurity in Southern Ghana. Keywords:Rhynchophorous phoenicis, entomophagy, malnutrition and larva.
Title:African palm weevil, Rhynchophorous phoenicis Fabricius (Coleoptera: Curculionidae): An alternative mini livestock in Southern Ghana Author:S.K. Debrah, R. Kyerematen,K. Afreh-Nuamah ISSN 2394-966X International Journal of Novel Research in Life Sciences Novelty Journals
Abstract:Deficit irrigation is important to increase the efficiency in view of limited water resources for agriculture. It is essential to find the most sensitive stage of crop and influence of deficit irrigation on crop yield. Deficit irrigation improves water productivity and irrigation management practices resulting in water saving. A field experiment was carried out at Mehoni Agricultural Research Center, Raya Valley of Ethiopia, during 2016/17 season with the objectives determine the combined effect of deficit irrigation and furrow irrigation techniques on onion yield and water productivity. five level of irrigation water amount percentage based on evapo-transpiration of the crop (ETc) (100%ETc, 85%ETc, 70% ETc, 55% ETc and 40%ETc) and three types of furrow irrigation water application techniques (alternate furrow, fixed furrow and conventional furrow) were tested in randomized completely block design (RCBD) with three replications. The combined result of deficit irrigation furrow irrigation techniques indicated that there were a significant (P<0.05) variation among treatments for plant height, bulb height, bulb diameter, bulb yield, and water productivity. Accordingly, the highest bulb yield was obtained at 100% ETc with conventional furrow method. In terms of water productivity, 40% ETc deficit irrigation level application with alternative furrow irrigation and fixed furrow irrigation gave the highest water productivity which significantly superior to all other treatments. On the other hand, the minimum water productivity was recorded from conventional furrow with 100% ETc (full irrigation). Keywords:Alternate furrow, Conventional furrow, Deficit irrigation, Fixed furrow, Furrow technique, Onion, Water productivity.
Title:EFFECT OF DEFICIT IRRIGATION AND FURROW IRRIGATION TECHNIQUES ON ONION WATER PRODUCTIVITY AND YIELD Author:Yemane Mebrahtu ISSN 2394-966X International Journal of Novel Research in Life Sciences Novelty Journals