Pozzolanic Reactivity Studies on a Biomass-Derived Waste from Sugar Cane Production: Sugar Cane Straw Ash (SCSA)

Abstract

American Chemical SocietyMoraes, J.; Melges, JLP.; Akasaki, JL.; Tashima, MM.; Soriano Martinez, L.; Monzó Balbuena, JM.; Borrachero Rosado, MV.... (2016). Pozzolanic reactivity studies on a miomass-derived waste from sugar cane production: sugar cane straw ash (SCSA) Just Accepted "Just Accepted" manuscripts have been peer-reviewed and accepted for publication. They are posted online prior to technical editing, formatting for publication and author proofing. The American Chemical Society provides "Just Accepted" as a free service to the research community to expedite the dissemination of scientific material as soon as possible after acceptance. "Just Accepted" manuscripts appear in full in PDF format accompanied by an HTML abstract. "Just Accepted" manuscripts have been fully peer reviewed, but should not be considered the official version of record. They are accessible to all readers and citable by the Digital Object Identifier (DOI®). "Just Accepted" is an optional service offered to authors. Therefore, the "Just Accepted" Web site may not include all articles that will be published in the journal. After a manuscript is technically edited and formatted, it will be removed from the "Just Accepted" Web site and published as an ASAP article. Note that technical editing may introduce minor changes to the manuscript text and/or graphics which could affect content, and all legal disclaimers and ethical guidelines that apply to the journal pertain. ACS cannot be held responsible for errors or consequences arising from the use of information contained in these "Just Accepted" manuscripts. 1Pozzolanic reactivity studies on a biomass-derived waste from sugar cane production: sugar cane straw ash (SCSA) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 2 ABSTRACTBiomass has gained in importance as an energy source in recent years. One of the crops that presents interesting opportunities with regard to biomass is sugar cane. In Brazil, sugar cane production is increasing for alcohol and sugar manufacture. Some by-products, such as sugar cane straw, also are obtained during harvesting. Due the calorific value of the sugar cane straw, its use as biomass is increasing. After the straw is burned to produce energy, an ash is obtained: sugar cane straw ash (SCSA). This waste needs an appropriate destination and, since the recent publication of successful studies using biomass derived-ashes as pozzolanic material, the present study aimed to assess the pozzolanic reactivity of sugar cane straw ash. The pozzolanic activity was assessed using a new and simple recently proposed method: evaluation of the electrical conductivity of calcium hydroxide (CH) and pozzolan suspensions, in which solid CH is initially present. These results were compared to those of two other well-established techniques: Fourier transformed infrared spectroscopy and thermogravimet...

Pozzolanic Reaction of a Biomass Waste as Mineral Addition to Cement Based Materials: Studies by Nuclear Magnetic Resonance (NMR)

“…The power plants can play an important role in the conversion process, because they can use agricultural wastes, i.e. sugar cane bagasse (Frías et al 2011;Moraes et al 2016), bamboo (Frías et al 2012), as alternative biomass to fossil fuels in the generation of cleaner and more sustainable energy (Moraes et al 2016;Abbasi and Abbasi 2010).…”

Effect of sugar cane straw ash (SCSA) as solid precursor and the alkaline activator composition on alkali-activated binders based on blast furnace slag (BFS)

“…Another interesting biomass derived from the sugarcane crop is sugarcane straw, which is produced in large amounts and is usually abandoned in land. This biomass could be transformed into reactive ash (sugarcane straw ash, SCSA) for reuse in inorganic binders [8]: interesting sustainability issues have been described in terms of saving energy and raw materials for cement and concrete. The SCSA is obtained from the combustion of sugar cane straw, a waste that increased in the last few years for two reasons: the expansion of sugar cane production in many countries and the trend to use a mechanized harvesting.…”

Exploratory study on the utilization of different dietary methionine sources and methionine to lysine ratio for growing–finishing pigs

“…In the tests carried out, SCSA consumed large amount of calcium hydroxide to form C-S-H (calcium silicate hydrate) gels. This reaction product was observed in the following tests: X-ray diffraction [7], thermogravimetric analysis [7,9], Fourier transform infrared spectroscopy and electrical conductivity measurement [9]. As consequence for the high consumption of calcium hydroxide observed in these studies, SCSA was utilised as partial replacement of the Portland cement.…”

“…In 2014, this country produced 736.11 million tonnes of sugar cane were produced, which accounts for $40% of the worldwide production [6]. The potential of SCSA in AAM comes from prior studies that assessed its reactivity as pozzolan in calcium hydroxide blends [7][8][9]. Authors observed that the ash presented high reactivity [7,8], where the SCSA activity was also compared to a densified silica fume [9].…”