Acrylic acid

CAS RN: 79-10-7

Cleanup Methods

SRP: Wastewater from contaminant suppression, cleaning of protective clothing/equipment, or contaminated sites should be contained and evaluated for subject chemical or decomposition product concentrations. Concentrations shall be lower than applicable environmental discharge or disposal criteria. Alternatively, pretreatment and/or discharge to a permitted wastewater treatment facility is acceptable only after review by the governing authority and assurance that "pass through" violations will not occur. Due consideration shall be given to remediation worker exposure (inhalation, dermal and ingestion) as well as fate during treatment, transfer and disposal. If it is not practicable to manage the chemical in this fashion, it must be evaluated in accordance with EPA 40 CFR Part 261, specifically Subpart B, in order to determine the appropriate local, state and federal requirements for disposal.
Wastewater containing acrylic monomers is treated by neutralization and polymerization using hydrogen peroxide as a catalyst. Thus, propylene oxidn wastewater containing 2.75% acrylic acid and 45.1 g chemical oxygen demand/L was heated to 90 degree C, and a 70% aq soln of hydrogen peroxide (hydrogen peroxide - acrylic acid ratio 1:4) was added. After stirring 3 hr, powdered lime was added to pH 8.75. The precipitate was filtered out, and the treated effluent contained 16.2 g chemical oxygen demand/L, a reduction of 64%.
Sizing agents in wastewater are eliminated by either chemical and physical, or biological treatment. Polyacrylates ... in wastewaters are treated by coagulation-flocculation with removal rates of 83.8. ... Natural products, such as maize starch and polyvinyl alcohol (PVA) treated through activated sludge show chemical oxygen demand removal rates > 80 and 42%; biological oxygen demand removal rates > 92.7 and 46.0%, respectively.
Photosensitive waste soln containing poly(vinyl alcohol), acrylic acid monomer and polymer, polyoxyalkylene glycol acrylate resing and a surfactant was treated with potassium persulfate, irradiated, and filtered. The filtrate was flocculated with alum and the sulfate ion SO4(2-) precipitated by barium carbonate and calcium hydroxide.
ACCIDENTAL RELEASE MEASURES; Personal precautions, protective equipment and emergency procedures: Use personal protective equipment. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Remove all sources of ignition. Evacuate personnel to safe areas. Beware of vapors accumulating to form explosive concentrations. Vapors can accumulate in low areas. Environmental precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided. Methods and materials for containment and cleaning up: Contain spillage, and then collect with an electrically protected vacuum cleaner or by wet-brushing and place in container for disposal according to local regulations.
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