Manganese Increases Lead Release to Drinking Water

2019 ◽  
Vol 53 (9) ◽  
pp. 4803-4812 ◽  
Author(s):  
Benjamin F. Trueman ◽  
Brittany S. Gregory ◽  
Nicole E. McCormick ◽  
Yaohuan Gao ◽  
Stephanie Gora ◽  
...  
Keyword(s):  
Drinking Water ◽  
Lead Release

Effects of blending of desalinated water with treated surface drinking water on copper and lead release

2010 ◽  
Vol 44 (14) ◽  
pp. 4057-4066 ◽  
Author(s):  
Haizhou Liu ◽  
Kenneth D. Schonberger ◽  
Gregory V. Korshin ◽  
John F. Ferguson ◽  
Paul Meyerhofer ◽  
...  
Keyword(s):  
Drinking Water ◽  
Desalinated Water ◽  
Lead Release

Bromide-assisted catalytic oxidation of lead(ii) solids by chlorine in drinking water distribution systems

2017 ◽  
Vol 53 (62) ◽  
pp. 8695-8698 ◽  
Author(s):  
John Orta ◽  
Samuel Patton ◽  
Haizhou Liu
Keyword(s):  
Drinking Water ◽  
Catalytic Oxidation ◽  
Distribution Systems ◽  
Water Distribution ◽  
Water Distribution Systems ◽  
Redox Process ◽  
Drinking Water Distribution Systems ◽  
Drinking Water Distribution ◽  
Lead Release

This study investigated the effect of bromide on the oxidation of three lead(ii) solids by chlorine – a redox process critical to the control of lead release in drinking water distribution systems.

scholarly journals Effect of Aluminum on Lead Release to Drinking Water from Scales of Corrosion Products

2020 ◽  
Vol 54 (10) ◽  
pp. 6142-6151 ◽  
Author(s):  
Guiwei Li ◽  
Yeunook Bae ◽  
Anushka Mishrra ◽  
Baoyou Shi ◽  
Daniel E. Giammar
Keyword(s):  
Drinking Water ◽  
Corrosion Products ◽  
Lead Release

Key Parameters and Kinetics of Oxidation of Lead (II) Solid Phases by Chlorine in Drinking Water

2006 ◽  
Vol 1 (4) ◽  
Author(s):  
Haizhou Liu ◽  
Gregory V. Korshin ◽  
John F. Ferguson ◽  
Wenju Jiang
Keyword(s):  
Drinking Water ◽  
Transition Phase ◽  
Lag Phase ◽  
X Ray Diffraction ◽  
Water Parameters ◽  
Carbonate Concentration ◽  
Rapid Transition ◽  
Lead Release ◽  
Solid Phases ◽  
Kinetics Of

Equilibria and kinetics of transformations in the Pb(II)/Pb(IV)/chlorine system have a great impact on lead release in drinking water. To explore this system, oxidation of representative Pb(II) solid phases, predominantly hydrocerussite was carried out in chlorinated water with various alkalinities and pH values. It was determined that the oxidation of hydrocerussite by chlorine proceeded via three phases. These included a lag phase, a rapid transition phase and a final quasi steady-state phase. The lag phase corresponded to the transformation of hydrocerussite to cerussite PbCO3, while during the transition phase, the oxidation of PbCO3 and formation of -PbO2 occurred. Key water parameters, such as pH, chlorine concentration and dissolved inorganic carbonate concentration had a pronounced impact on the duration of the lag phase. Data of X-ray diffraction and scanning electron microscopy demonstrated that cerussite PbCO3 was formed as a transient phase during hydrocerussite oxidation, and dispersed microcrystals of scrutinyite -PbO2 were formed when chlorine was consumed.

Preventing the colloidal dispersion of Pb(iv) corrosion scales and lead release in drinking water distribution systems

2019 ◽  
Vol 5 (7) ◽  
pp. 1262-1269 ◽  
Author(s):  
Gregory Korshin ◽  
Haizhou Liu
Keyword(s):  
Drinking Water ◽  
Distribution Systems ◽  
Water Distribution ◽  
Solid Phase ◽  
Water Distribution Systems ◽  
Colloidal Dispersion ◽  
Drinking Water Distribution Systems ◽  
Drinking Water Distribution ◽  
Lead Release ◽  
Corrosion Scales

Lead(iv) oxide PbO2 is one dominant solid phase in lead corrosion scales of drinking water distribution systems.

Impact of sodium silicate on lead release from lead(ii) carbonate

2021 ◽  
Author(s):  
Bofu Li ◽  
Benjamin F. Trueman ◽  
Javier M. Locsin ◽  
Yaohuan Gao ◽  
Mohammad Shahedur Rahman ◽  
...  
Keyword(s):  
Drinking Water ◽  
Sodium Silicate ◽  
Theoretical Support ◽  
Lead Levels ◽  
Lead Release

Sodium silicate has been used to control lead levels in drinking water, but there is little theoretical support for this practice. We find that sodium silicate is not effective in controlling lead release from lead(ii) carbonate.

Investigation of Lead Levels in Potable Water from Faucets, Water Fountains and Water Dispensers Using Various Sampling Protocols in Schools

Impact ◽  
2020 ◽  
Vol 2020 (7) ◽  
pp. 50-52
Author(s):  
Ding-Quan Ng ◽  
Yi-Pin Lin
Keyword(s):  
Drinking Water ◽  
Research Team ◽  
Potable Water ◽  
Galvanic Corrosion ◽  
Assistant Professor ◽  
Lead Contamination ◽  
University Of Technology ◽  
Sampling Protocols ◽  
Lead Levels ◽  
Lead Release

Lead contamination is an example of how elements that leach into drinking water can lead to considerable health problems in local communities. A research team led by Assistant Professor Ding-Quan Ng, from Chaoyang University of Technology, has been investigating the levels of lead found in drinking water in schools. They are also investigating lead release that occurs as a result of galvanic corrosion into potable water. Ng and his colleagues hope to shine a light on the dangers of lead contamination in drinking water supplies and seek to use their findings to promote the establishment of new regulations and policies to improve monitoring of water quality to local needs.

Effects of pH value, chloride and sulfate concentrations on galvanic corrosion between lead and copper in drinking water

2016 ◽  
Vol 13 (4) ◽  
pp. 602 ◽  
Author(s):  
Ding-Quan Ng ◽  
Yi-Pin Lin
Keyword(s):  
Drinking Water ◽  
Distribution Systems ◽  
Lead Concentration ◽  
Ph Value ◽  
Galvanic Corrosion ◽  
Corrosion Products ◽  
Lead Contamination ◽  
Lead Corrosion ◽  
Effects Of Ph ◽  
Lead Release

Environmental context Galvanic corrosion has been recently reported as the main cause of lead contamination in drinking water in urban cities. Conditions that can deter or promote galvanic corrosion, however, are not well understood. Fundamental investigations exploring the mechanisms and processes involved in galvanic corrosion in drinking water could help to implement proper corrective measures to safeguard public health from lead contamination. Abstract This study investigates the effects of pH value, chloride and sulfate concentrations on galvanic corrosion between lead and copper in drinking water. We hypothesised that galvanic corrosion would occur immediately when a lead–copper couple is first formed and that the release of lead would be suppressed by the subsequent formation of lead corrosion products. Therefore, unlike previous long-term studies using harvested lead pipes, batch experiments employing high-purity lead and copper (99.9%) wires under stagnant and completely mixed conditions were conducted for a 7-day period to test our hypotheses. It was found that enhanced lead release was indeed observed after the lead–copper couple was formed and the lead profiles after 48h were strongly influenced by lead corrosion products formed in the system. Under stagnant conditions, reducing pH and increasing either chloride or sulfate concentrations promoted lead release, leading to the formation of lead corrosion products such as cerussite and hydrocerussite as experiments proceeded. The effect of chloride concentration on total lead concentration measured in the aqueous phase was similar to that of sulfate at the same molar concentration, showing that the chloride-to-sulfate mass ratio may not provide a good indication for total lead concentration in water. This study provides essential information on fundamental mechanisms and processes involved in galvanic corrosion in drinking water and may be used to explain related phenomena observed in real drinking-water distribution systems.

Understanding the Role of Particulate Iron in Lead Release to Drinking Water

2016 ◽  
Vol 50 (17) ◽  
pp. 9053-9060 ◽  
Author(s):  
Benjamin F. Trueman ◽  
Graham A. Gagnon
Keyword(s):  
Drinking Water ◽  
Particulate Iron ◽  
Lead Release
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