جستجوی مقالات مرتبط با کلیدواژه « bagasse » در نشریات گروه « آب و خاک »

In order to study the effect of bioactivator application to accelerate the production of compost from sugarcane wastes, an experiment was conducted as a complete randomized design with four replications in Safiabad Agricultural Research and Education and Natural Resources Center in 2020 (for one year). The treatments included: control (bagasse without the use of bioactivator) and the second to fourth treatment were the application of 0.5, 1 and 1.5% by weight of bioactivators in 100 kg bagasse, respectively. The results showed that, there was a significant difference between treatments at significance level of 5% in the terms of electrical conductivity (EC), organic carbon (OC), C/N (in sampling after 45 days) and Fe and Mn concentrations (in sampling after 60 days). Furthermore there was a significant difference between treatments at the level of 1% in terms of OC, C/N and Cu concentration (in sampling after 60 days). Studies also showed that the highest temperature (52 °C) was measured in 1.5 % treatment and the highest EC was measured in sampling after 45 days in 1% treatment (3.02 dS/m). The highest OC and C/N, were measured in sampling after 60 days (43.9% and 34.4) in 1.5 % treatment, respectively. Regarding the amount of elements in the final compost (in sampling after 60 days), the highest amount of Fe concentration (4581.5 mg. kg-1) was measured in 1 % treatment, Cu (15.25 mg. kg-1) and Mn (72.25 mg. kg-1) were measured in 1.5 % treatment and no significant difference was observed among the treatments in terms of nitrogen, phosphorus, potassium and zinc (Zn) concentrations at significance level of 5%. According to results of this study, the 1.5% treatment increase the speed and quality of compost produced from sugarcane waste (bagasse).

Due to the environmental problems caused by wind erosion, it is necessary to stabilize the dust centers with mulches. The objective of the present study was to determine and compare the optimum vinasse mulches based on mechanical indicators for sensitive soil stabilization to wind erosion. In this research, vinasse (0, 100, 200 g) is combined with bagasse (0, 25, 50 g), ash bagasse (0, 25, 50 g), filtercake (0, 12.5, 25 g), and one-liter water (81 treatments). At first, the treatments were determined in the appropriate range of salinity and acidity (35 treatments) and in the next step, the mechanical indicators have been measured after mulching on laboratory trays (2×30×100 cm). Optimum mulches have been determined based on five indicators by mean comparison (Duncan). The mean comparison showed that treatments 33, 30, 34, 32, and 19 show the mean difference between the groups based on layer thickness, impact resistance, compressive strength, and shear strength properly. It can be concluded that vinasse (100 and 200 g) with 50 g bagasse reduces the crack coefficient greatly, and the application of vinasse, bagasse, and filtercake does not affect the compressive strength and impact resistance.

Nowadays, recycling of organic wastes produced in food and medicinal factories by applying them to agricultural lands as organic fertilizers is the focus of attention. The present study was carried out to compare the effect of applying organic wastes of four factories in Fars and Khuzestan provinces and their biochars on some of the chemical properties of a calcareous soil. An experiment was conducted for two months in a completely randomized design based on a factorial arrangement (9 × 4), including 9 organic waste types (filter cake, bagasse, bagasse-biochar, sugar beet, sugar beet-biochar, licorice, licorice-biochar, soybean meal and soybean meal-biochar) at 4 rates of application (0, 1%, 2% and 3% by weight) with three replications. The results showed that interaction effects of organic waste types and rates, on the soil available phosphorus (P), soil DTPA-extractable iron (Fe), copper (Cu) and manganese (Mn) concentrations and electrical conductivity (EC) were significant. The soil amended with soybean meal had the highest nitrogen (N) and Cu content. Filter cake was a good source for P, zinc (Zn) and Fe and sugar beet pulp was a good source for Mn. There was no significant difference in the amounts of available nutrients between raw organic materials and their biochars. Although the increase in the level of application of these wastes by two to three percent by weight increased the accessibility of these elements, the application of higher levels of these wastes was accompanied by 33% to 166% increase in soil electrical conductivity; so, widespread use of these wastes should be done more cautiously.

In order to investigate the performance of sugarcane bagasse in the removal of nitrate from effluent subsurface drainage water, a study was conducted at the physical models laboratory of Water Sciences Engineering Faculty of Shahid Chamran University of Ahvaz, in the summer of 2013 till the summer of 2014. A physical model with the dimensions of , which simulated the drainage trench, was utilized in this experiment. Bagasse combined with soil by 3:7 volume ratio, the combination installed as a filter besides the drainage pipe. In this study, the influent nitrate concentration was 160 mg.L-1. Influent nitrate flow was continues. At first, every two days, and then every four days the drainage pipe was sampled. Input and output drainage model solution sampled with plastic bottles. Then some parameters like Nitrate, NH4, PH and EC measured. The presence of bagasse as a carbon material in the soil caused the amount of nitrate to reduce from 160 milligrams per liter to 60 milligrams per liter; a reduction of nearly more than 60 percent. The amount of ammonium increased very little in this study. The use of sugar cane bagasse as a filter drainage, reduces the acidity of the drainage outlet. It had no effect on the electrical conductivity. Physical model results show that the clogging of the filter in this period was relatively low and carbon filter had good performance. At first, the water output velocity was high but it decreased by time. According to analytics, the difference between input and output parameters in level of five percent were significant for acidity and electrical conductivity.

This research was conducted on polluted soil near the lead and zinc factory in Zanjan province through which the effects of two organic and three mineral sources were examined on heavy metals fixation in randomized experiment design. Experimental treatments includes bagasse and rice husk in three levels: 1.25, 2.5 and 5%, zeolite in three levels: 5%, 10% and 15%, phosphate rock in three rates: 1%, 3% and 5%, triple superphosphate in three ratios: 0.0075, 0.015 and 0.3% accompanied with control treatment. The incubation period was performed in filed capacity moisture. After the incubation period the heavy metals concentration in soil were measured and the radish was planted. After harvesting the shoot the concentration of lead, zinc, iron and manganese in the shoot of radish were measured. The results of data Analysis of Variance showed that treatments had significant effect on reduction of iron, manganese and lead concentration in soil (extractable by nitric acid) and radish shoot. The most effective treatment on reduction of soil iron concentration was in the second level of rice husk. In manganese and lead concentration reduction was the third level of zeolite. The least concentration in radish shoot was observed in third level of bagasse treatment (460.7mg/kg), Manganese in third level of zeolite treatment (370mg/kg) and lead (14.43 mg kg⁻¹) in third level of rice husk. According to the organic and zeolite treatment on heavy metal fixation in soil and reduction of plant uptake this treatment can be used to amend the lead polluted soil.