Next Article in Journal
Aquatic Insects and Benthic Diatoms: A History of Biotic Relationships in Freshwater Ecosystems
Next Article in Special Issue
Electroadsorption of Bromide from Natural Water in Granular Activated Carbon
Previous Article in Journal
Redox Dependent Arsenic Occurrence and Partitioning in an Industrial Coastal Aquifer: Evidence from High Spatial Resolution Characterization of Groundwater and Sediments
Previous Article in Special Issue
Expansion and Headloss Dependencies for Flowrate and Fluidization during Backwashing of Sand, Anthracite and Filtralite® Expanded Aluminosilicate Filters
Article

Biochar from Agricultural by-Products for the Removal of Lead and Cadmium from Drinking Water

1
Department of Geology, Mines and Civil Engineering, UTPL, Universidad Técnica Particular de Loja, Barrio San Cayetano Alto, Marcelino Champagnat Street, s/n, Loja 110107, Ecuador
2
Department of Chemical, UTPL, Universidad Técnica Particular de Loja, Barrio San Cayetano Alto, Marcelino Champagnat Street, s/n, Loja 110107, Ecuador
3
Civil Engineering Degree, UTPL, Universidad Técnica Particular de Loja, Barrio San Cayetano Alto, Marcelino Champagnat Street, s/n, Loja 110107, Ecuador
4
Department of Civil Engineering, Institute of Water, University of Granada, Ramón y Cajal Street, 4, 18071 Granada, Spain
*
Author to whom correspondence should be addressed.
Water 2020, 12(10), 2933; https://doi.org/10.3390/w12102933
Received: 29 August 2020 / Revised: 7 October 2020 / Accepted: 14 October 2020 / Published: 20 October 2020
(This article belongs to the Special Issue Biofiltration and Physicochemical Filtration for Water Treatment)
This study reports the adsorption capacity of lead Pb2+ and cadmium Cd2+ of biochar obtained from: peanut shell (BCM), “chonta” pulp (BCH) and corn cob (BZM) calcined at 500, 600 and 700 °C, respectively. The optimal adsorbent dose, pH, maximum adsorption capacity and adsorption kinetics were evaluated. The biochar with the highest Pb2+ and Cd2+ removal capacity is obtained from the peanut shell (BCM) calcined at 565 °C in 45 min. The optimal experimental conditions were: 14 g L−1 (dose of sorbent) and pH between 5 and 7. The sorption experimental data were best fitted to the Freundlich isotherm model. High removal rates were obtained: 95.96% for Pb2+ and 99.05. for Cd2+. The BCH and BZM revealed lower efficiency of Pb2+ and Cd2+ removal than BCM biochar. The results suggest that biochar may be useful for the removal of heavy metals (Pb2+ and Cd2+) from drinking water. View Full-Text
Keywords: peanut shell; “chonta” pulp; corn cob; biochar; adsorption; lead; cadmium; drinking water peanut shell; “chonta” pulp; corn cob; biochar; adsorption; lead; cadmium; drinking water
Show Figures

Figure 1

MDPI and ACS Style

Puglla, E.P.; Guaya, D.; Tituana, C.; Osorio, F.; García-Ruiz, M.J. Biochar from Agricultural by-Products for the Removal of Lead and Cadmium from Drinking Water. Water 2020, 12, 2933. https://doi.org/10.3390/w12102933

AMA Style

Puglla EP, Guaya D, Tituana C, Osorio F, García-Ruiz MJ. Biochar from Agricultural by-Products for the Removal of Lead and Cadmium from Drinking Water. Water. 2020; 12(10):2933. https://doi.org/10.3390/w12102933

Chicago/Turabian Style

Puglla, Edgar P., Diana Guaya, Cristhian Tituana, Francisco Osorio, and María J. García-Ruiz. 2020. "Biochar from Agricultural by-Products for the Removal of Lead and Cadmium from Drinking Water" Water 12, no. 10: 2933. https://doi.org/10.3390/w12102933

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop