SISAL

About: SISAL is a research topic. Over the lifetime, 1878 publications have been published within this topic receiving 55528 citations.

Method for producing mushrooms by utilizing sisal hemp waste residues

Abstract: The invention discloses a method for producing mushrooms by utilizing sisal hemp waste residues. A mushroom cultivation material comprises the following raw materials in parts by weight: 80-100 parts of sisal hemp waste residues, 30-40 parts of Chinese weeping cypress leaves and 10-20 parts of mulberry stem powder. The method comprises the following steps of carrying out high-temperature fermentation on the mushroom cultivation material in advance, crushing the sisal hemp waste residues, adding lime and strains, spraying after uniform mixing, covering a film to ferment for 3-5 days, carrying out pile turning, scattering sugarcane ends and lotus seed hulls into the cultivation material, mixing uniformly, stacking, covering the film for 2-3 days, carrying out pile turning for 2-3 times in such a way, mixing uniformly, heating to 70-80 DEG C, sterilizing for 15 hours, cooling to room temperature and inoculating the strains for 8-10 days to emerge the mushrooms. The method adopts the sisal hemp waste residues as the mushroom cultivation material, so that the energy consumption in mushroom production can be reduced, the spawn running time after mushroom inoculation is shortened, the mushroom yield is improved and the cultivation cost is reduced.

Evaluation of the influence of chemical treatment on the tensile strength of sisal fibresby a weibull distribution analysis

Abstract: Mercerisation is a common chemical treatment for sisal fibres since it can be used to increase their interfacial adhesion to various polymeric matrices. The influence of this treatment on fibre tensile strength from the point of view of a Weibull distribution is reported. A hundred non-treated sisal fibres were individually tested and the accordance of their tensile strength to a Weibull distribution was analysed. The need to measure the diameter of each fibre being tested in order to estimate its tensile strength was studied. Sisal tensile strength was found to follow a Weibull distribution and to decay with the increase of the severity of the chemical treatment (0.25, 0.5, 1, 2, 5 and 10% w/w NaOH aqueous solution). The values showed an initial decrease of tensile strength, a plateau in the range of 3 to 6% and finally a steep decrease as the concentration was further increased. However, only the 10% treatment showed a statistically significant decrease of fibre tensile strength within a 90% confidence level. Comparisons are included throughout the paper regarding the widely used simplified statistical mean analysis when reporting fibre tensile strength values and its implications on the estimations.

Sisal Fibers Reinforced Epoxidized Nonedible Oils Based Epoxy Green Composites and Its Potential Applications

Abstract: Renewable resourced polymer composites from vegetable oils and bio-fibers are receiving increasing attention from various industries due to their characteristics of being less heavy, environment friendly, and biodegradable. Lignocellulosic natural fibers have immense potential to be used as reinforcing fillers due to their characteristics of being less expensive, abundant obtainability, lower density, higher specific strength and modulus, and good interfacial strength with thermoset polymers. In this chapter, epoxidized nonedible linseed and castor oils are proposed as a diluent to petro-based epoxy in formulating toughened bio-based copolymers. Unidirectional sisal fibers were reinforced within a network of such bio-epoxy copolymers in order to achieve an optimal stiffness–toughness balance. Cardanol based phenalkamine, a bio-renewable crosslinker, is used to develop well toughened sustainable and green composite materials. The composites were subjected to various thermal, mechanical, dynamic mechanical, and morphological tests to investigate the impact of nonedible epoxidized oils and sisal fibers in addition to the petro-based epoxy matrix. The present study shows the method for design and development of novel sustainable green composites with higher bio-source content (>65%) meant for shock absorbing applications. These green materials may find good space in making high-performance engineering applications in automotive, structural, construction, and building sectors.

Adsorption isotherms and kinetics for the removal of cationic dye by Cellulose-based adsorbent biocomposite films

Abstract: Various fillers (commercial, nipa palm, sisal activated carbon, zeolite) were incorporated with regenerated cellulose matrix that dissolved using lithium chloride/N, N-dimethylacetamide solution. The biosorbent films were successfully prepared via solution casting and then characterized by Fourier transform infrared spectrometer (FTIR), X-ray Diffractometer (XRD), thermogravimetric analyzer (TGA), and scanning electron microscope (SEM). The biocomposite films with embedded commercial activated carbon exhibited the largest adsorption capacity of methylene blue (146.81 mg g−1). Although the adsorption ability of the nipa palm and sisal activated carbon biocomposite was lower than the commercial activated carbon biosorbent film, both nipa palm and sisal activated carbon still could potentially be used as an alternative filler for cationic dye removal. On the contrary, zeolite had low adsorption efficiency owing to its morphology. The equilibrium adsorption experiment revealed that the Langmuir isotherm model best fitted the biocomposite films with commercial and sisal activated carbon, whereas the Freundlich adsorption model suited the biosorbent films with nipa palm activated carbon and zeolite than other models. The kinetics results of adsorption for all biocomposite films were well described using a pseudo-second-order kinetic model. The cellulose/activated carbon films would be promisingly utilized as a biosorbent for treatment of dye-contaminated wastewater.