TY - JOUR
T1 - Removal of heavy metals present in groundwater from a northern Mexico mining community using Agave tequilana Weber extracts
AU - Alcázar-Medina, F. A.
AU - Núñez-Núñez, C. M.
AU - Villanueva-Fierro, I.
AU - Antileo, C.
AU - Proal-Nájera, J. B.
N1 - Publisher Copyright:
© 2020, Universidad Autonoma Metropolitana Iztapalapa. All rights reserved.
PY - 2020/9/1
Y1 - 2020/9/1
N2 - Groundwater samples from a mining community in North of Mexico were studied. Concentration of metals above the maximum allowable concentration from Mexican regulation were found. Spherical agglomeration technique (SAT) was used to remove metals (Pb, Cu, Cr, Ni, Zn, Mn, Cd). Two precipitating agents were tested: NaOH and Ca(OH)2. Also, Agave tequilana Weber extract as hydrophobicizing agent was employed to avoid metal redisolution. High metal removal proved SAT effectiveness under pH ranging between 9-11 and extract doses from 0.3 g extract/g pollutant. Better removal percentages were reached when using Ca(OH)2 as precipitating. Reported removal efficiency in that case yielded removal percentages as high as 99% removal for Pb under the three pH tested. The heavy metal evaluation index before treatment was 2354.91, but decreased to levels as low as 4.7 after SAT application.
AB - Groundwater samples from a mining community in North of Mexico were studied. Concentration of metals above the maximum allowable concentration from Mexican regulation were found. Spherical agglomeration technique (SAT) was used to remove metals (Pb, Cu, Cr, Ni, Zn, Mn, Cd). Two precipitating agents were tested: NaOH and Ca(OH)2. Also, Agave tequilana Weber extract as hydrophobicizing agent was employed to avoid metal redisolution. High metal removal proved SAT effectiveness under pH ranging between 9-11 and extract doses from 0.3 g extract/g pollutant. Better removal percentages were reached when using Ca(OH)2 as precipitating. Reported removal efficiency in that case yielded removal percentages as high as 99% removal for Pb under the three pH tested. The heavy metal evaluation index before treatment was 2354.91, but decreased to levels as low as 4.7 after SAT application.
KW - Heavy metal evaluation index
KW - Hydrophobicizing agent
KW - Metal redisolution
KW - Precipitation
KW - Spherical agglomeration technique
UR - http://www.scopus.com/inward/record.url?scp=85086252139&partnerID=8YFLogxK
U2 - 10.24275/rmiq/Bio1047
DO - 10.24275/rmiq/Bio1047
M3 - Artículo
AN - SCOPUS:85086252139
SN - 1665-2738
VL - 19
SP - 1187
EP - 1199
JO - Revista Mexicana de Ingeniera Quimica
JF - Revista Mexicana de Ingeniera Quimica
IS - 3
ER -