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Abstract<\/strong>: Arsenic typically develops in Eastern Wisconsin groundwater as a\nresult of oxidation of sulfide bearing minerals in the limestone bedrock
\n(Schreiber et al. 2000). Naturally occurring arsenic exists in groundwater
\nas oxyanions which have two oxidation states, As(III) and As(V). Under
\nambient pH conditions As(V) is primarily present as an anion (i.e.,
\nH2<\/sub>AsO4<\/sub>-) while As(III) tends to be uncharged (i.e., H3<\/sub>AsO3<\/sub>), making it
\nmuch more difficult to remove through the existing treatment
\ntechniques such as adsorption and reverse osmosis (RO). Although
\nmany studies exist establishing arsenic concentrations across
\nWisconsin, there is a lack of investigations into the concentrations of
\neach arsenic species, which is essential for establishing a removal
\ntechnique. The primary goal of this research was to establish baseline
\nconcentrations of each arsenic species, accounting for seasonal
\nvariations, and determine how these concentrations could be affected
\nby water usage. Private drinking water wells were selected at 16
\nlocations across Eastern Wisconsin. The wells were screened at various
\ndepths, in multiple geologic units, and contained a wide-range of total
\narsenic concentrations. Analysis of the speciation data indicated that
\nAs(III) was the dominant species of arsenic in all of the wells sampled.
\nData from the 11 pumping tests that were conducted, showed 9
\nexhibiting a downward trend in As(III) concentration and an upward
\ntrend in As(V) concentration as volume purged increased. The pumping
\ntests also showed a substantial increase in total arsenic in many of the
\nwells as volume purged increased. There did not appear
\nto be aseasonal trend in arsenic concentration.<\/p>\n","protected":false},"excerpt":{"rendered":"
The Dynamics and Speciation of Arsenic in Drinking Water Wells in Eastern Wisconsin Abstract: Arsenic typically develops in Eastern Wisconsin groundwater as a result of oxidation of sulfide bearing minerals in the limestone bedrock (Schreiber et al. 2000). Naturally occurring …<\/p>\n","protected":false},"author":850,"featured_media":0,"template":"","meta":{"_acf_changed":false,"_tec_requires_first_save":false,"_EventAllDay":false,"_EventTimezone":"America\/Chicago","_EventStartDate":"2019-12-02 13:00:00","_EventEndDate":"2019-12-02 14:00:00","_EventStartDateUTC":"2019-12-02 19:00:00","_EventEndDateUTC":"2019-12-02 20:00:00","_EventShowMap":true,"_EventShowMapLink":true,"_EventURL":"","_EventCost":"","_EventCostDescription":"","_EventCurrencySymbol":"","_EventCurrencyCode":"","_EventCurrencyPosition":"prefix","_EventDateTimeSeparator":"","_EventTimeRangeSeparator":"","_EventOrganizerID":[1626],"_EventVenueID":[4160],"_OrganizerEmail":"","_OrganizerPhone":"","_OrganizerWebsite":"","_VenueAddress":"","_VenueCity":"","_VenueCountry":"","_VenueProvince":"","_VenueState":"","_VenueZip":"","_VenuePhone":"","_VenueURL":"","_VenueStateProvince":"","_VenueLat":"","_VenueLng":"","_VenueShowMap":false,"_VenueShowMapLink":false,"_tribe_blocks_recurrence_rules":"","_tribe_blocks_recurrence_description":"","_tribe_blocks_recurrence_exclusions":"","_tribe_events_status":"","_tribe_events_status_reason":"","_tribe_events_is_hybrid":"","_tribe_events_is_virtual":"","_tribe_events_virtual_video_source":"","_tribe_events_virtual_embed_video":"","_tribe_events_virtual_linked_button_text":"","_tribe_events_virtual_linked_button":"","_tribe_events_virtual_show_embed_at":"","_tribe_events_virtual_show_embed_to":[],"_tribe_events_virtual_show_on_event":"","_tribe_events_virtual_show_on_views":"","_tribe_events_virtual_url":"","footnotes":"","uwm_wg_additional_authors":[]},"tags":[],"tribe_events_cat":[35],"class_list":["post-4156","tribe_events","type-tribe_events","status-publish","hentry","tribe_events_cat-thesisdissertation-defense","cat_thesisdissertation-defense"],"yoast_head":"\n