Green Composites Using Lignocellulosic Waste and Cellulosic Fibers from Corn Husks

Tumolva, Terence; Enguero, Danilo S.; Laus, Tracy Joy C.; Requejo, Benedict A.

doi:10.1051/matecconf/20166201003

Cited by 5 publications

(2 citation statements)

References 6 publications

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“…Alkaline Extraction of Lignin. The method described by Tumolva et al (2016) with modifications was used for the alkaline extraction of lignin. Optimum operating conditions were based on the Volume 32, Number 1, January 2021 • KIMIKA study conducted by Conti (2019).…”

Section: Sample Preparationmentioning

confidence: 99%

Alkali Lignin from Rice (Oryza sativa L.) Husk as Adsorbent for Aqueous Methyl Orange and Bromothymol Blue: Analysis of the Adsorption Kinetics and Mechanism

Linde

Marquez

2021

KIMIKA

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In this study, lignin was isolated from rice (Oryza sativa L.) husk using alkaline extraction method and was used as an adsorbent for aqueous solutions of methyl orange (MO) and bromothymol blue (BTB). The equilibrium removal rate of MO was found to be at 61.4%, with experimental equilibrium adsorbate uptake, qe, of 1.23 mg·g-1, achieved at 150 minutes contact time. For BTB, the equilibrium removal rate was found to be at 78.3%, with an experimental qe of 1.57 mg·g-1, achieved at 150 minutes contact time. Pseudo-first order (PFO) and pseudo-second order (PSO) kinetic models were then used to investigate the kinetics of the adsorption process. Both MO and BTB on lignin were found to follow a PSO kinetic model, with rates of 6.84 x 10-3 g·mg-1·min-1 and 0.69 g·mg-1·min-1, respectively. Langmuir, Freundlich, Dubinin-Radushkevich (DR), Brunauer-Emmett-Teller (BET), Flory Huggins (FH), and Temkin adsorption isotherm models were then used to determine the appropriate equilibrium adsorption model for both substrates. Based on the calculations performed, the Temkin model best described the adsorptive removal of both MO and BTB. Based on the Temkin model, the adsorption processes of both MO and BTB were found to occur spontaneously, with equilibrium rate constants of 0.083 L·mg-1 and 0.012 L·mg-1, respectively.

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Section: Sample Preparationmentioning

confidence: 99%

Alkali Lignin from Rice (Oryza sativa L.) Husk as Adsorbent for Aqueous Methyl Orange and Bromothymol Blue: Analysis of the Adsorption Kinetics and Mechanism

Linde

Marquez

2021

KIMIKA

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“…Cellulose is the most abundant organic compound on Earth and is the major waste generated by the agricultural industry, which can be utilized as substrates for industrial purposes [1,9]. e agricultural wastes of the Philippines are said to be the most underdeveloped biomass resource for sustainable bioenergy; however, these agricultural wastes currently have no established commercial value [10].…”

Section: Introductionmentioning

confidence: 99%

Isolation of Actinomycetes with Cellulolytic and Antimicrobial Activities from Soils Collected from an Urban Green Space in the Philippines

Daquioag

Penuliar

2021

International Journal of Microbiology

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Actinomycetes are one of the most important groups of soil bacteria that are recognized as sources of commercially important enzymes and antimicrobials. Actinomycetes, however, are largely underestimated and uncharacterized in underexplored habitats such as green spaces in urban areas. This study aimed to isolate actinomycetes from soils in the University of the Philippines Diliman campus and determine their cellulolytic and antimicrobial activities. A total of 235 isolates were purified from the soil samples collected. Cellulolytic and antimicrobial activities were observed in 114 and 18 isolates, respectively. The cell-free supernatants of 31 isolates exhibited high cellulolytic activities. Two isolates, in particular EWLG2 and EPNA9, had 0.596 FPU and 0.885 FPU cellulolytic activity, respectively. Seven isolates exhibited antimicrobial activities in the screening methods used. The crude extracts of isolates AWLG9, AWLG8, AWLG10, AULG1, APLG2, and AWLG13 had minimum inhibitory concentrations (MIC) values ranging from 31.25 µg/mL to 500 µg/mL against Candida spp. Isolates AULG1 and EPLG5 were active against the bacterial test microorganisms and had MIC values ranging from 250 µg/mL to 500 µg/mL. DNA sequencing identified the isolates which exhibited high cellulolytic and antimicrobial activities as Bacillus sp. and Streptomyces sp., with percent identities ≥98%. This study shows that green spaces are rich sources of soil microorganisms that have cellulolytic and antimicrobial activities. It is recommended that the isolates obtained in this study be examined further for possible applications in bioethanol production and pharmacology.

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Potential of alkali treated cornhusk film as reinforcement for epoxy laminate composites

Singh

Chatterjee

2020

Cellulose

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Green Composites Using Lignocellulosic Waste and Cellulosic Fibers from Corn Husks

Cited by 5 publications

References 6 publications

Alkali Lignin from Rice (Oryza sativa L.) Husk as Adsorbent for Aqueous Methyl Orange and Bromothymol Blue: Analysis of the Adsorption Kinetics and Mechanism

Alkali Lignin from Rice (Oryza sativa L.) Husk as Adsorbent for Aqueous Methyl Orange and Bromothymol Blue: Analysis of the Adsorption Kinetics and Mechanism

Isolation of Actinomycetes with Cellulolytic and Antimicrobial Activities from Soils Collected from an Urban Green Space in the Philippines

Potential of alkali treated cornhusk film as reinforcement for epoxy laminate composites

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