PMID- 31796237
OWN - NLM
STAT- MEDLINE
DCOM- 20200316
LR  - 20221207
IS  - 1879-3363 (Electronic)
IS  - 0025-326X (Linking)
VI  - 150
DP  - 2020 Jan
TI  - Algal bioassays detect modeled loading of wastewater-derived nitrogen in coastal 
      waters of O'AHU, HAWAI'I.
PG  - 110668
LID - S0025-326X(19)30816-1 [pii]
LID - 10.1016/j.marpolbul.2019.110668 [doi]
AB  - Previous studies indicate coastlines are at risk of wastewater contamination from 
      injection wells, cesspools, and septic systems. In this study, common marine 
      algae were used to ground-truth modeled loading of wastewater-derived N to 
      coastlines of O'ahu, Hawai'i. Macroalgae were collected and/or deployed at 118 
      sites and analyzed for tissue delta(15)N and N %. Wastewater source locations were 
      used to estimate wastewater-derived N in groundwater with the modeling software 
      MT3DMS/MODFLOW. Algal bioassays identified six coastal regions subjected to 
      elevated wastewater-derived N loading. In a case study, submarine groundwater 
      discharge (estimated by (222)Rn mass balance) was related to wastewater loading 
      from onsite sewage disposal systems (OSDS) and municipal wastewater injection 
      wells in Waimanalo. The highest (222)Rn-derived SGD rate and N flux were 
      21.4 m(3)/m/d and 62.6 g/m/d, respectively. The results of this study suggest 
      that OSDS and injection wells discharge substantial volumes of wastewater and N 
      across broad regions of coastal O'ahu.
CI  - Copyright (c) 2019. Published by Elsevier Ltd.
FAU - Amato, Daniel W
AU  - Amato DW
AD  - Department of Botany, University of Hawai'i at Manoa, 3190 Maile Way, Honolulu, 
      Hawai'i, 96822, USA. Electronic address: dwamato@hawaii.edu.
FAU - Whittier, Robert B
AU  - Whittier RB
AD  - Hawai'i Department of Health, Safe Drinking Water Branch, Uluakupu Bldg. 4, 2385 
      Waimano Home Road, Suite 110, Pearl City, Hi, 96782-1400, USA. Electronic 
      address: robert.whittier@doh.hawaii.gov.
FAU - Dulai, Henrietta
AU  - Dulai H
AD  - Department of Earth Sciences, 1680 East-West Rd, School of Ocean Earth Science 
      and Technology, University of Hawai'i at Manoa, Honolulu, Hawai'i, 96822, USA. 
      Electronic address: hdulaiov@hawaii.edu.
FAU - Smith, Celia M
AU  - Smith CM
AD  - Department of Botany, University of Hawai'i at Manoa, 3190 Maile Way, Honolulu, 
      Hawai'i, 96822, USA. Electronic address: celia@hawaii.edu.
LA  - eng
PT  - Journal Article
DEP - 20191130
PL  - England
TA  - Mar Pollut Bull
JT  - Marine pollution bulletin
JID - 0260231
RN  - 0 (Waste Water)
RN  - N762921K75 (Nitrogen)
SB  - IM
MH  - Biological Assay
MH  - Environmental Monitoring/*methods
MH  - *Groundwater
MH  - Hawaii
MH  - Nitrogen/*analysis
MH  - *Wastewater
MH  - Water Pollution/*statistics & numerical data
OTO - NOTNLM
OT  - Cesspool
OT  - Hawaii
OT  - Nitrogen
OT  - Ocean
OT  - Ulva
OT  - Wastewater
EDAT- 2019/12/05 06:00
MHDA- 2020/03/17 06:00
CRDT- 2019/12/05 06:00
PHST- 2019/05/16 00:00 [received]
PHST- 2019/10/04 00:00 [revised]
PHST- 2019/10/13 00:00 [accepted]
PHST- 2019/12/05 06:00 [pubmed]
PHST- 2020/03/17 06:00 [medline]
PHST- 2019/12/05 06:00 [entrez]
AID - S0025-326X(19)30816-1 [pii]
AID - 10.1016/j.marpolbul.2019.110668 [doi]
PST - ppublish
SO  - Mar Pollut Bull. 2020 Jan;150:110668. doi: 10.1016/j.marpolbul.2019.110668. Epub 
      2019 Nov 30.