List of Articles Wheat straw

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  1 - Investigation of Effects of Bio Chars Derived from Wheat and Corn Straw on Zinc Adsorption in Aqueous Solutions
  hamidreza boostani hanieh askari
  10.22034/jest.2018.19726.2863
  Introduction: In recent years, use of bio char as bio sorbent for pollution control of aqueous solutions containing heavy metals, has been considered by researchers. In the present study, the efficiency of wheat straw bio char and corn straw bio char for the removal of More

  Introduction: In recent years, use of bio char as bio sorbent for pollution control of aqueous solutions containing heavy metals, has been considered by researchers. In the present study, the efficiency of wheat straw bio char and corn straw bio char for the removal of Zinc from aqueous solutions had been investigated under the influence of various factors such as pH, contact time, adsorbent dose and adsorbent concentration. Material and Methods: Langmuir and Freundlich models were used to describe the adsorption isotherm and Pseudo-first order and pseudo-second order kinetic models were applied for description of adsorption kinetics. Results: The optimum pH for Zn adsorption was found to be 5 by two bio chars. With increasing contact time, Zn adsorption efficiency was increased by two adsorbents and at 24 hours reached to equilibrium. The increase of bio char dosage until 20 g.L-1, the percentage of Zn removal in solutions was enhanced by tow adsorbents; however, the upper dosage of adsorbent caused a decrease in removal efficiency. The results indicate that the Langmuir model better fits on adsorption data than Freundlich model. Accordingly, Zn adsorption capacity by corn straw bio char (9.60 mg. g-1) was higher than the wheat straw bio char (6.77 mg.g-1). The kinetic data were better represented by the pseudo-second-order than the pseudo-first-order kinetic model, so it seems that the dominant process of Zn adsorption to be a chemisorption. Conclusion: The results showed that the bio chars which used in this experiment can be applied as a low-cost, effective and available adsorbent for removal of Zn from aqueous solutions. Manuscript profile
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  2 - Experimental Investigation on Cadmium Ions Removal from Aqueous Solutions by Modified Wheat Straw Biosorbent
  Abolfazl Jahangiri Elham Ameri
  10.22034/jest.2017.10307
  Background and Objactive: Cadmium is one of the heavy metals resulting from wastewater of different industries, and it is also highly toxic to human and the environment. So, the cations of this metal must be removed or reduced down to effluent standards. The aim of the More

  Background and Objactive: Cadmium is one of the heavy metals resulting from wastewater of different industries, and it is also highly toxic to human and the environment. So, the cations of this metal must be removed or reduced down to effluent standards. The aim of the current study was to investigate the cadmium removal efficiency by modified wheat straw from aqueous solutions. Method: In this study, wheat straw as the adsorbent was prepared in a laboratory scale and pulverized by standard ASTM sieves (40-120 mesh sizes). Consequently, wheat straw was functionalized by using NaOH solution with concentration of 0.7 M. FTIR analysis was used to characterize the functional groups in the prepared adsorbent. Adsorption process was accomplished in a batch laboratory-scale with emphasis on the effect of various parameters such as mesh size, pH, contact time, initial concentration of Cd (II), adsorbent dosage and mixing rate on the adsorption efficiency. Findings: FTIR results showed that the modification of the wealth straw brought increase of stretch vibration band of hydroxyl and carboxyl groups. Optimized values for each factor to achieve the highest uptake were found to be as follows: the mesh size of 70, the contact time of 30 minutes, the initial concentration of 20 mg/L, the pH 7, the adsorbent dose of 1.5 g and the agitation speed of 240 rpm, at 25 ° C, respectively. Discussion and Counclusion: The maximum removal efficiency of cadmium was found to be %98.5, at the optimized experimental condition. In general, results showed that the modified wheat straw as an unusable and cheap sorbent could be consider for the removal of the cadmium ion with nearly complete removal efficiency, at the optimized condition. Manuscript profile
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  3 - Evaluation of controlling effects of alfalfa fields dodder with different amount of rotten wheat straw
  haydar Mousavi
  In order to control different amounts of rotten wheat straw infested feature dodder alfalfa under field conditions, two separate experiments in crop year 2014-2015, in two different field of Urmia region, with a randomized complete block in four replications were evalua More

  In order to control different amounts of rotten wheat straw infested feature dodder alfalfa under field conditions, two separate experiments in crop year 2014-2015, in two different field of Urmia region, with a randomized complete block in four replications were evaluated. Treatments consisted of seven levels straw weighing one, two, three, four and five kg, hand weeding and no control were considered. Different amounts of straw was distributed on whole plots' surface. In each block, one plot for manual control and an infected plot were as control. Test results showed that the effect of different amounts of straw used in alfalfa on some vegetative traits such as stem diameter, stem height, and fresh weight of alfalfa was significant at the 1% level and increase compared was to the control treatment. Results also showed that yield and yield components of meaningful use different amounts rotten wheat straw yield of dry matter and chlorophyll content, is the 1% level. Among the different amounts of straw, 5 kg treatment showed the best results in dry matter yield about 1.8 kg/m2) compared to other treatments. It was found that the use of rotten wheat straw and straw to control the dodder (5 kg per pound) had a good effect. Manuscript profile
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  4 - Evaluation of Incubation Time, Salt and Date Waste in Production of Orange Pigment by Monascus purpureus Using Response Surface Methodology
  Mahshid Asghari Mahshid Jahadi Nafiseh Ghasemisepro
  Monacus purpureus (M. purpureus)produce six types of pigments from yellow to dark red color pigments. Monascus­ fungus has been welcomed due to its various pigment production and healing properties. The aim of this study, evaluation of incubation time (11-21days), s More

  Monacus purpureus (M. purpureus)produce six types of pigments from yellow to dark red color pigments. Monascus­ fungus has been welcomed due to its various pigment production and healing properties. The aim of this study, evaluation of incubation time (11-21days), salt (7-12 %) and date waste (15-55%) in production of orange pigment by M. purpureus using response surface methodology in solid state. After optimization of these factors, it was showed the highest amount of orange pigment was obtained during the 21-day incubation period, 7% salt and the date syrup concentration was 55%. In optimum conditions, a maximum yield of orange pigment was 5.31 (ODU.ml-1), fermentation yield was 0.252 (ODU.ml-1.day-1), pigment production yield per biomass 0.623 (ODU.mg-1), yield of orange production per carbon source consumption 0.043 (ODU.gr- 1), the substrate conversion rate was 93 (%). The results of this study showed that date waste and Wheat Straw could be used as an affordable and effective substrate for the production of orange pigment by M. purpureus fungus. Manuscript profile
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  5 - Ruminal Degradation Kinetics of Wheat Straw Irradiated by High Doses of Electron Beam
  P. Shawrang A.A. Sadeghi J. Ahmadpanah
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  6 - Effect of Feeding Dietary Treated Wheat Straw with Urea and Whey on Fattening Lambs Performance
  O. Dayani R. Tahmasb A. Khezri A.R. Sabetpay
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  7 - Effective Microbes (EM) Supplementation Effect on Feed Intake, Digestibility and Live Weight Changes of Washera Sheep Fed Wheat Straw
  A. Fekadie A. Abera C. Yitbarek
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  8 - The effect of application plant mulches on weeds control of fig (Ficus carica) orchards in Estahban region
  Zahra Tabesh Farhad Mohajeri
  To study the effect of different types of plant mulch and their thicknesses on weeds control of fig (Ficus carica) orchards, an experiment was performed in a factorial arrangement based on a randomized complete block design with three replications in Estahban region of More

  To study the effect of different types of plant mulch and their thicknesses on weeds control of fig (Ficus carica) orchards, an experiment was performed in a factorial arrangement based on a randomized complete block design with three replications in Estahban region of Fars province, Iran in 2018, where factors were non-living mulch in three levels (Almond shell, Wheat straw and Licorice residues) and mulch thickness in four levels (Control, 5, 10 and 15 cm). The results indicated that mulches can significantly reduce weeds density and growth (dry and wet weight) in compare to control treatment. Application of Licorice residues better than other treatments controlled the growth and density of weeds in fig. Among the levels of different mulch thickness, 10 cm thick mulch, in addition to minimize soil moisture loss, resulted to reduce the biological yield of weeds. In general, non-living mulches can be an effective agronomic management to control the weeds in fig orchards. Manuscript profile