A Prototype Acid Spray Scrubber for Absorbing Ammonia Emissions from Exhaust Fans of Animal Buildings

Greenhouse Gas Emissions from Housing and Manure Management Systems at Confined Livestock Operations

“…Gaseous pollutants removal efficiency is generally used as the criteria for determining the spray type wet scrubber performance can be defined as [66]:…”

“…To begin with, wet scrubbers were employed to reduce odor and particulates being discharged from livestock facilities [69][70]. Later on, scrubbing other airborne contaminants such as NH3 [66,71,65], H2S [72], and pathogens [73] were also investigated to test their scrubbing efficacy. The collection efficiencies reported ranging minus to 100% for odor, 23% to 96% for NH3, and 36% to 96% for particulate matter.…”

“…The major limitations encountered in the development of wet scrubber technology for CLOs are low collection efficiency of the odorous compounds, high pressure drop, and high operating costs. An acid spray wet scrubber has the greatest potential for adaptation to existing swine facility ventilation fans because they do not cause excessive backpressure to the fans and do not significantly reduce building ventilation airflow [66].…”

Control of pollution emitted by foundries

“…These emissions are mineral dust, organic carbons emitted from melting, sand molding, casting and cleaning the casting (Krishnaraj et al 2012). With growing awareness on environmental problems, issues about the pollution caused by the foundry industry have to be seriously and urgently reviewed (Lichtfouse 2015;Manuzon et al 2007;Choi et al 2007;Holtzer 2005;Huang et al 2009). …”

Statistical modelling of ammonia absorption in an acid spray scrubber

“…State-of-the-art technologies used for NH 3 mitigation in agricultural facilities are the European acid packed bed scrubbers and bio-trickling filters, but they are challenged by technical issues on clogging and unstable operation (Melse & Ogink, 2005). One of the most promising ammonia mitigation technologies for large mechanically-ventilated animal facilities is acid spray wet scrubbing, which involves the processes of gas absorption and chemical reaction (Hadlocon, Manuzon, & Zhao, 2014a;Manuzon, Zhao, Keener, & Darr, 2007;Ndegwa, Hristov, Arogo, & Sheffield, 2008). A comprehensive evaluation of wet scrubber performance from a pilotscale lab simulation unit to commercial-scale field operation has been conducted by Hadlocon et al (2014a), Hadlocon, Manuzon, and Zhao (2014b), Hadlocon, Zhao, Manuzon, and Elbatawi (2014)).…”