title: Simultaneous treatment of graywater and waste gas in a biological trickling filter.
abstract: Biological processors are typically used in liquid- and gas-phase remediation as separately staged systems. This research presents a novel application of a biotrickling filter operated for simultaneous treatment of contaminants present in graywater and waste gas (ammonia and hydrogen sulfide). Liquid- and gas-phase contaminants were monitored via bioreactor influent/effluent samples over the course of a 300-day study. An oxygen-based bioassay was used to determine spatial location of the functional groups involved in the biodegradation of surfactants, dissolved hydrogen sulfide, and ammonium. Results indicated that a biotrickling filter is able to support the wide range of microbial species required to degrade the compounds found in graywater and waste gas, maintaining conversion efficiencies greater than 90% for parent surfactant compounds and waste gas constituents. These results provide evidence of an operational scheme that potentially reduces footprint size and cost of graywater/waste gas biotreatment.
authors.affiliation: School of Civil Engineering, Purdue University, 550 Stadium Mall Dr., West Lafayette, IN 47905, USA. emclamor@purdue.edu
authors.forename: Eric
authors.initials: E
authors.lastname: McLamore
authors.forename: Sybil
authors.initials: S
authors.lastname: Sharvelle
authors.forename: Zhen
authors.initials: Z
authors.lastname: Huang
authors.forename: Kathy
authors.initials: K
authors.lastname: Banks
mesh_terms: D000393:Air Pollutants / Q000302:isolation & purification*; D000641:Ammonia / Q000302:isolation & purification; D001673:Biodegradation, Environmental; D001681:Biological Assay; D005374:Filtration / Q000295:instrumentation / Q000379:methods*; D005740:Gases / Q000302:isolation & purification*; D006862:Hydrogen Sulfide / Q000302:isolation & purification; D009812:Odorants / Q000517:prevention & control; D012967:Sodium Dodecyl Sulfate / Q000031:analogs & derivatives / Q000302:isolation & purification / Q000378:metabolism; D013501:Surface-Active Agents / Q000302:isolation & purification* / Q000378:metabolism; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000295:instrumentation* / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification* / Q000378:metabolism
chemical_list: D000393:Air Pollutants; D005740:Gases; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical; D012967:Sodium Dodecyl Sulfate; D000641:Ammonia; C408148:sodium laureth sulfate; D006862:Hydrogen Sulfide