Synthesis, characterization and evaluation of biochar from agricultural waste biomass for use in building materials

Zeidabadi, Zahra Asadi; Bakhtiari, Somayeh; Abbaslou, Hakime; Ghanizadeh, Ali Reza

doi:10.1016/j.conbuildmat.2018.05.271

Cited by 138 publications

(62 citation statements)

References 25 publications

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“…The re duction in the flex ural strength with the in cor po ra tion of biochar was also at trib uted to the re duc tion in the amount of cal cium sil i cate hydrate formed due to the re duc tion in the ce ment con tent. In con trast, Zei d abadi et al [ 129 ] re ported an in crease in the ten sile strength of con crete mix tures in cor po ra tion rice husk biochar up to 10% re placement of the ce ment. The en hance ment of the ten sile strength with the ad di tion of the biochar can be as so ci ated with the pos si ble re fine ment of the in ter fa cial tran si tion zone.…”

Section: 2 Tensile Strengthmentioning

confidence: 99%

Recent advancements in the use of biochar for cementitious applications: A review

Akinyemi

Adesina

2020

Journal of Building Engineering

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With in creas ing pop u la tion and ris ing de mands for im proved built en vi ron ment, there is an ex pected in crease in green house gas emis sion from the con struc tion in dus try. Car bon diox ide emis sion lev els are fast ap proaching a tip ping point which could lead to ir re versible cli mate change. The earth's ca pa bil ity to neu tralise the CO 2 emis sions through the nat ural car bon cy cle has been over stretched. There fore it is im per a tive to adopt technolo gies that are able to cap ture and se quester CO 2 in or der to can cel out their re lease from in dus trial ac tiv ities such as the con struc tion and build ing in dus try. This is im por tant so that ce ment-based ma te r ial pro ductions' car bon foot print can be re duced dras ti cally for a pos i tive change to take place in the cli mate. Biochar holds great promise as an ef fec tive CO 2 sorp tive ma te r ial in ce ment-based ap pli ca tions rel a tively sim i lar to its con ven tional use for soil amend ment. Ac tu ally, frag mented re searches on biochar as an ad mix ture in ce men titious ma te ri als have been con ducted. Based on this logic, this re view placed enor mous em pha sis on col lat ing in for ma tion from re cent stud ies on biochars from agro-sources used as an ad mix ture in ce ment-based ap pli cations. Sim i larly, the re view gave up-to-date knowl edge about the sources of the bio mass and the pro duc tion processes. Con clu sively, the pos i tive ef fects of biochar for car bon se ques tra tion on some prop er ties of the var ious ce men ti tious ap pli ca tions were high lighted.

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Section: 2 Tensile Strengthmentioning

confidence: 99%

Recent advancements in the use of biochar for cementitious applications: A review

Akinyemi

Adesina

2020

Journal of Building Engineering

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“…The XRD diffractograms of the biochar samples are presented in Figure 2A‐F, which essentially show the mineral components identified in the biochars. The XRD patterns of SCB350 and SCB550 (depicted in Figure 2C) showed amorphous nature due to broad bumps and few peaks in the range 2θ = 10° to 33° 21,25 . The peaks in the XRD pattern for SCB 350 disappeared as temperature increased to 550°C.…”

Section: Resultsmentioning

confidence: 98%

“…The XRD patterns of SCB350 and SCB550 (depicted in Figure 2C) showed amorphous nature due to broad bumps and few peaks in the range 2θ = 10 to 33 . 21,25 The peaks in the XRD pattern for SCB 350 disappeared as temperature increased to 550 C. No detectable peaks were observed in the XRD pattern of SCB550. This indicated that the crystallinity was reduced with the increasing pyrolysis temperature and formation of C rich amorphous biochars.…”

Section: Crystalline Structure and Chemical Compositionmentioning

confidence: 99%

A comparative study on synthesis and characterization of biochars derived from lignocellulosic biomass for their candidacy in agronomy and energy applications

et al. 2020

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Summary This study has dealt with the synthesis and characterization of biochars produced from three biomasses, viz. water hyacinth (whole plant and its components), yellow oleander, and sugarcane bagasse, and their comparative assessment for potential application in agronomy and energy production. The pyrolysis was carried out in a fixed batch reactor at 350°C and 550°C with a heating rate of 20°Cmin−1. Biochars were characterized for proximate and ultimate (elemental) analysis, and also using standard techniques (SEM, EDX, TGA, BET, XRD, and FTIR). Biochars produced at 550°C from all the feedstock had good properties (carbon content: 39.09‐80.74%, pH: 7.36‐10.42, calorific value: 16.98‐30.18 MJ kg−1, and ash content: 0.89%‐21.78%). Moreover, relatively low atomic ratios (H/C 0.25‐0.47 and O/C 0.15‐1.11) of all biochars indicated their potential as solid fuel. XRD results showed the presence of amorphous and crystalline structures, and minerals like sylivite, quartz, kalsilite, and tridymite in the biochar. Biochar produced from sugarcane bagasse at 550°C possessed the best properties: fixed carbon (77.42%), bulk density (0.13 kg/m3), brunauer–emmett–teller (BET) surface area (17.78 m2/g), pore size (12.86 nm), total pore volume (0.025 cm3/g), calorific value (30.18 MJ kg−1), ash content (1.16%), and moisture content (2.03%).

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“…Zeidabadi et al [77] reported maximum strength on the 5 wt.% bagasse biochar-added concretes. In contrast to the work of Zeidabadi et al [77], Mrad and Chehab [80] observed a decrease in compressive strength when high percentages of biochar were used (5, 10, 15, 25, and 40 wt.%). The authors noted a loss of 20-98% compressive strength in the biochar mortar when compared to mortar without biochar.…”

Section: Compression Strengthmentioning

confidence: 99%

“…The bonding characteristics can also vary depending on the feedstock material used to make the biochar. For instance, Zeidabadi et al [77] investigated the efficacy of two different biochars (rice husk biochar and bagasse biochar) produced at the same pyrolysis temperature of 700 • C. The authors noted differences in the mechanical properties of two different biochar-added concretes developed using the same process and weight percentage. The author concluded that this variation was caused by differences in the structural properties of the biochar.…”

Section: Microstructure and Interfacial Bonding In Biochar/cementitious Materialsmentioning

confidence: 99%

Biochar-Added Cementitious Materials—A Review on Mechanical, Thermal, and Environmental Properties

Mensah

Vigneshwaran

Narayanan³

et al. 2021

Sustainability

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The enhanced carbon footprint of the construction sector has created the need for CO2 emission control and mitigation. CO2 emissions in the construction sector are influenced by a variety of factors, including raw material preparation, cement production, and, most notably, the construction process. Thus, using biobased constituents in cement could reduce CO2 emissions. However, biobased constituents can degrade and have a negative impact on cement performance. Recently, carbonised biomass known as biochar has been found to be an effective partial replacement for cement. Various studies have reported improved mechanical strength and thermal properties with the inclusion of biochar in concrete. To comprehend the properties of biochar-added cementitious materials, the properties of biochar and their effect on concrete need to be examined. This review provides a critical examination of the mechanical and thermal properties of biochar and biochar-added cementitious materials. The study also covers biochar’s life cycle assessment and economic benefits. Overall, the purpose of this review article is to provide a means for researchers in the relevant field to gain a deeper understanding of the innate properties of biochar imparted into biochar-added cementitious materials for property enhancement and reduction of CO2 emissions.

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Synthesis, characterization and evaluation of biochar from agricultural waste biomass for use in building materials

Cited by 138 publications

References 25 publications

Recent advancements in the use of biochar for cementitious applications: A review

Recent advancements in the use of biochar for cementitious applications: A review

A comparative study on synthesis and characterization of biochars derived from lignocellulosic biomass for their candidacy in agronomy and energy applications

Biochar-Added Cementitious Materials—A Review on Mechanical, Thermal, and Environmental Properties

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