Removal of hexavalent chromium by anion exchange: Behavior of non-target anions and practical implications

2021 ◽  
Author(s):  
Leah C Flint ◽  
Miguel S Arias-Paic ◽  
Julie A Korak
Keyword(s):  
Drinking Water ◽  
Ion Exchange ◽  
Anion Exchange ◽  
Hexavalent Chromium ◽  
Water Sources ◽  
Chromium Removal ◽  
Drinking Water Sources ◽  
Practical Implications

Ion exchange is effective for hexavalent chromium removal from drinking water sources, but non-target anions (i.e., arsenic, vanadium, and uranium) that co-occur in water sources must be assessed to inform,...

The Impact Study of Hexavalent Chromium on the Environmental Safety of the Drinking Water Source from the Jiangsu Section of the Yangtze River Basin

2013 ◽  
Vol 765-767 ◽  
pp. 2976-2979 ◽  
Author(s):  
Xiao Xiao Sun ◽  
Ning Liu ◽  
Hai Yan Fan ◽  
Wen Qian Li ◽  
Yun Xin Zhou
Keyword(s):  
Drinking Water ◽  
Health Risk ◽  
River Basin ◽  
Hexavalent Chromium ◽  
Yangtze River ◽  
Yangtze River Basin ◽  
Water Sources ◽  
The Yangtze River ◽  
Drinking Water Sources ◽  
The Yangtze River Basin

In this paper, a health risk model was used to calculate and analyze the water quality monitoring data of the Yangtze River Basin from 2007 to 2009. The data analysis leads to a conclusion that hexavalent chromium is a major health risk factor of those drinking water sources in the Jiangsu section of the Yangtze River basin. Based on the health risk analysis, an environment strategy analysis model and the Dynamic Actor Network Analysis (DANA) software were used to study the optimal strategy on the risk management of chromium contamination of those drinking water sources in the Jiangsu Section of the Yangtze River basin.

Hygiene Aspects of Drinking Water Sources Used in Primary Milk Production

2016 ◽  
Vol 1 (6) ◽  
pp. 311-317
Author(s):  
Nada Sasakova ◽  
Gabriela Gregova ◽  
Jan Venglovsky ◽  
Ingrid Papajova ◽  
Bozena Nowakowicz-Debek ◽  
...  
Keyword(s):  
Drinking Water ◽  
Milk Production ◽  
Water Sources ◽  
Drinking Water Sources

ION Exchange Characterisation of Modified Zeolite

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2269-2272 ◽  
Author(s):  
Š Cerjan-Stefanovic ◽  
M. Kaštelan-Macan ◽  
T. Filipan
Keyword(s):  
Drinking Water ◽  
Ion Exchange ◽  
Anion Exchange ◽  
Natural Zeolite ◽  
Deionized Water ◽  
Isomorphous Substitution ◽  
Waste Waters ◽  
Modified Zeolite ◽  
Water Drinking

Isomorphous substitution of phosphorus into a natural zeolite affords the possibility to change the overall framework charge from negative to positive. The substances so created should be used for purification of waste waters. The work describes the preparation of phosphated zeolite, their characterisation and examples of their anion exchange of NO3 on observed in deionized water, drinking water and in the solution containing varying amounts of nitrate.

Decreasing waste brine volume from anion exchange with nanofiltration: implications for multiple treatment cycles

2021 ◽  
Author(s):  
Julie A. Korak ◽  
Leah C. Flint ◽  
Miguel Arias-Paić
Keyword(s):  
Ion Exchange ◽  
Anion Exchange ◽  
Hexavalent Chromium ◽  
Implementation Cost ◽  
Multiple Treatment ◽  
Brine Disposal ◽  
Brine Volume ◽  
Regeneration Cycle

Ion exchange (IX) removes hexavalent chromium from water, but waste brine disposal makes implementation cost-prohibitive in many communities. Nanofiltration treats waste brine for reuse in the next regeneration cycle.

A facile technique for automatically counting odor-producing algae (Pseudanabaena sp.) in drinking water sources

2021 ◽  
Author(s):  
Sandrine Boivin ◽  
Eri Hasegawa ◽  
Dabide Yamaguchi ◽  
Takahiro Fujioka
Keyword(s):  
Drinking Water ◽  
Water Sources ◽  
Water Utilities ◽  
Drinking Water Sources

The frequent analysis of the 2-methylisoborneol (2-MIB)-generating algae, Pseudanabaena sp., for predicting odor occurrence in drinking water sources is a major challenge for many drinking water utilities. This study aims...

scholarly journals Households access to improved drinking water sources and toilet facilities in Ethiopia: a multilevel analysis based on 2016 Ethiopian Demographic and Health Survey

BMJ Open ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. e042071
Author(s):  
Zewudu Andualem ◽  
Henok Dagne ◽  
Zelalem Nigussie Azene ◽  
Asefa Adimasu Taddese ◽  
Baye Dagnew ◽  
...  
Keyword(s):  
Drinking Water ◽  
Health Survey ◽  
Rural Households ◽  
Wealth Index ◽  
Water Sources ◽  
Demographic And Health Survey ◽  
P Value ◽  
Cluster Sampling ◽  
Drinking Water Source ◽  
Drinking Water Sources

ObjectiveThis study aimed to assess households access to improved drinking water sources and sanitation facilities and their associated factors in Ethiopia.DesignCross-sectional study.SettingEthiopia.ParticipantsHousehold heads.Primary outcomesAccess to improved drinking water sources and toilet facilities.MethodsWe conducted an in-depth secondary data analysis of 2016 Ethiopian Demographic and Health Survey. Data from a total of 16 650 households and 645 clusters were included in the analysis. The households were selected using a stratified two-stage cluster sampling technique. Multilevel binary logistic regression analyses were performed to identify factors associated with access to an improved drinking water source and toilet facilities. Adjusted OR with a 95% CI was reported with p value <0.05 was used to declare a significant association between the covariates and the outcome variables.ResultsThe proportions of households’ access to improved sources of drinking water and toilet facilities were 69.94% (95% CI: 69.23% to 70.63%) and 25.36% (95% CI: 24.69% to 26.03%), respectively. Households headed by women and households with a better wealth index were positively associated with access to improved drinking water sources. Whereas rural households, ≥30 min round trip to obtain drinking water and region were factors negatively associated with households access to improved drinking water sources. A higher probability of having access to improved toilet facilities: households with heads who had attained higher education, households having better access to improved sources of drinking water and households with better wealth index. While the following households were less likely to have access to improved toilet facilities: households with heads were widowed, households with four to six members, rural households and region.ConclusionThe study found that the proportions of households’ access to improved drinking water sources and toilet facilities in Ethiopia were relatively low, which demands the need to tailor strategies to increase the coverage of access to improved drinking water sources and toilet facilities.

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