Topic
SISAL
About: SISAL is a research topic. Over the lifetime, 1878 publications have been published within this topic receiving 55528 citations.
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TL;DR: In this paper, the authors used sisal decortication waste (SLDW) and sisal boles (SBW) for commercial-scale mushroom cultivation and achieved anaerobically co-digested with cow dung manure in a 10m3 continuous stirred tank reactor.
Abstract: The sisal industry in Tanzania generates large amounts of waste which is an un-tapped bioresource. Research was undertaken to establish appropriate technologies for its valorisation to mushrooms, biogas and biogas manure (BGM).Physical and biological pre-treatments achieved methane yield increments of 23-30% whereas co-digestion with fish waste achieved methane yield increments of 59-94%. Sisal fibre waste was demonstrated to be a novel biofilm-carrier for treating sisal pulp leachate. With a loading rate of 9.0 kgVS/m3/day, the packed-bed bioreactor was operated without process stress. Sisal decortication waste (SLDW) and sisal boles (SBW) were found to be suitable for oyster mushroom cultivation. With water-pretreated SBW and saline-SLDW, biological efficiencies of 26-86% were obtained. SBW was utilized for commercial-scale mushroom cultivation and yielded 250kg/ton of wet substrate. Residues of mushroom cultivation (SMS) were anaerobically co-digested with cow dung manure and yielded 230-300L CH4/kg VSadded which indicated the potential of SMS for AD.Co-digestion of SLDW with cow dung manure in a 10m3 continuous stirred tank reactor gave about 400 litres CH4/ m3/day, and 260 L/day of BGM which was superior to NPK fertilizer. In conclusion, sisal waste has potential for valorisation, and integrating mushroom and biogas production for better economics is feasible.
The sisal industry in Tanzania generates large amounts of waste which is an un-tapped bioresource. Research was undertaken to establish appropriate technologies for its valorisation to mushrooms, biogas and biogas manure (BGM).Physical and biological pre-treatments achieved methane yield increments of 23-30% whereas co-digestion with fish waste achieved methane yield increments of 59-94%. Sisal fibre waste was demonstrated to be a novel biofilm-carrier for treating sisal pulp leachate. With a loading rate of 9.0 kgVS/m3/day, the packed-bed bioreactor was operated without process stress. Sisal decortication waste (SLDW) and sisal boles (SBW) were found to be suitable for oyster mushroom cultivation. With water-pretreated SBW and saline-SLDW, biological efficiencies of 26-86% were obtained. SBW was utilized for commercial-scale mushroom cultivation and yielded 250kg/ton of wet substrate. Residues of mushroom cultivation (SMS) were anaerobically co-digested with cow dung manure and yielded 230-300L CH4/kg VSadded which indicated the potential of SMS for AD.Co-digestion of SLDW with cow dung manure in a 10m3 continuous stirred tank reactor gave about 400 litres CH4/ m3/day, and 260 L/day of BGM which was superior to NPK fertilizer. In conclusion, sisal waste has potential for valorisation, and integrating mushroom and biogas production for better economics is feasible.
Key words: sisal waste, anaerobic digestion, mushrooms, valorisation
2 citations
TL;DR: In this article, the axial behavior of low-high strength concrete rectangular columns confined by Sisal Fiber Reinforced Polymers (Sisal FRP) is investigated. But the results of the experiment were limited.
Abstract: This research work presents the results of experiment study on the axial behavior of low-high strength concrete rectangular columns confined by Sisal Fiber Reinforced Polymers (Sisal FRP). The objective of this study is investigate the performance of Sisal FRP composites to increase strength and ductility of rectangular columns through external confinement. The research parameter were confinement thickness and strength of concrete core. A total of 16 rectangular columns were tested under Universal Testing Machine (UTM) up to failure point. Test result shown that the external confinement by Sisal FRP are very effective to increase strength and ductility.
2 citations
TL;DR: In this paper, a kind of nanocomposite paper was obtained by evaporation-induced self-assembly of a mixture of sisal cellulose nanofibers and polyethylene glycol (PEG) as the matrix and citric acid (CA) as a cross-linking agent.
Abstract: In this work, a kind of nanocomposite paper was obtained by evaporation-induced self-assembly of a mixture of sisal cellulose nanofibers (CNF) and polyethylene glycol (PEG) as the matrix and citric acid (CA) as a cross-linking agent. The CNF/PEG/CA paper exhibited good water swelling resistance which could be controlled by changing the concentration of CA. In addition, this nanocomposite paper exhibited good mechanical properties and water-induced shape memory performance. In particular, when the dosage of CA was 30 wt.%, the tensile strength and the tensile modulus of the CNF/PEG/CA paper after swelling were 25.2 MPa and 813.0 MPa, respectively. Further, this nanocomposite showed great potential for water-induced shape memory materials with fast response speed. The shape recovery rate ( ) of the CNF/PEG/CA paper reached 90.2% with 30 wt.% CA after being immersed in water for 11 s. It is anticipated that our current work can be used to exploit more efficient methods to overcome the poor water swelling resistance of the cellulose-based shape memory materials.
2 citations
TL;DR: In this paper , the ballistic impact properties of hybrid laminates of areca and kenaf fibers were studied, and the results showed that composite made with all layers of are ca has better impact strength and absorbs greater impact energy.
2 citations
Patent•
18 Jul 2012
TL;DR: In this article, a method for hydrothermally activating sisal hemp based carbon fibers has been proposed, where sisal fiber is placed in a tubular furnace, heating to be 600-1000 DEG C under the protection of nitrogen, performing thermal insulation for 35-45min, naturally cooling and taking out to obtain sisal Hemp based fibers; weighing the prepared sisal-based fibers; placing in a polytetrafluoroethylene-lined stainless steel reaction kettle, adding distillation water into the kettle, placing the reaction kettle in an oven, heating
Abstract: The invention discloses a method for hydrothermally activating sisal hemp based carbon fibers The method comprises the steps of: placing sisal hemp fibers in a tubular furnace, heating to be 600-1000 DEG C under the protection of nitrogen, performing thermal insulation for 35-45min, naturally cooling and taking out to obtain sisal hemp based fibers; weighing the prepared sisal hemp based fibers,placing in a polytetrafluoroethylene-lined stainless steel reaction kettle, adding distillation water into the kettle, placing the reaction kettle in an oven, heating to be 100-150 DEG C, performing thermal insulation for 5-12h, then naturally cooling in the air to be room temperature, flushing by distillation water and absolute ethanol and filtering, then placing in the oven for drying to obtainblack fiberous solid deposits, namely the activated sisal hemp based carbon fibers, wherein the sisal hemp fibers are first-class good-quality sisal hemp fibers, the distillation water is secondary distillation water, and the absolute ethanol is analytically pure According to the method, the effects of low cost, simple equipment, convenience in operation, high activating rate of the sisal hemp based carbon fibers and strong adsorption property of the obtained product are achieved, and the concept of hydrothermally activating the sisal hemp based carbon fibers has never been used before
2 citations