Cactus Mucilage as an Emergency Response Biomaterial to Provide Clean Drinking Water

Stebbins, Daniela de Lima; Buttice, Audrey L.; Fox, Dawn I.; Smith, Deni Maire; Alcantar, Norma

doi:10.1016/b978-0-444-59395-5.00010-8

Cited by 3 publications

(1 citation statement)

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“…Green technologies based on low-cost adsorbents from agricultural waste, industrial by-product, or natural material currently are growing [4][5][6][7].The literature includesvarious works about the useof eco-friendly adsorbents based on lignocellulosic residues to eliminate contaminants such asheavy metals and dyes from water [8][9][10]. These new materials involve the ideal of Horizonte 2020 as"zero waste production" in the agro-industrial process.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a cactus mucilage biocomposite to remove total arsenic from water

Vecino

Rey

Stebbins

et al. 2016

Environmental Technology & Innovation

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Mucilage fractions extracted from Opuntiaficus-indicacactus were captured in calcium alginate biobeads. The beads were tested as eco-friendly adsorbents to removearsenic (As) from water, and their Asremoval efficiency was evaluated. Batch adsorption studies were performed using an incomplete factorial design by varying the concentrations of mucilage (0.5-2 mgL-1), sodium alginate (3-5%), and calcium chloride (0.5-1 molL-1) incorporated in the biobeads. The optimal formulation of these adsorbentbiobeads varied depending on the mucilage fraction. Thus, biocompositeformulated with 1.25 mgL-1 of gelling mucilage, 4% of sodium alginate, and 0.75 molL-1 of calcium chloride eliminated up to 63% of As from water, with a capacity of 101.6 mgg-1 , whereas the composite biobeadsformulated with 1.25 mgL-1 of non-gelling mucilage reduced59.8% of As from water, using the least amounts of sodium alginate and calcium chloride in the range tested, with a capacity of 97.1 mgg-1 .

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