The zinc concentrations and pH measurement from batch experiments with varied pH and biochar amounts. Additionally, solid phase sample analyses results from both XRD and XANES are included. This dataset is associated with the following publication: O'Connor , K.F., S.R. Al-Abed, S. Horden, and P.X. Pinto. Assessing the efficiency and mechanism of zinc adsorption onto biochars from poultry litter and softwood feedstocks. Bioresource Technology Reports. Elsevier B.V., Amsterdam, NETHERLANDS, 18: 101039, (2022).

The primary objective of this study was to evaluate the long-term effectiveness of a chitin (crushed crab shells) substrate compared to traditional ligneous (wood chips, hay, and manure) substrates on Zn, other metals (Al, Cu, Fe, Cd, Mn), and sulfate removal in MIW under anaerobic column bioreactor conditions. The secondary objective includes the evaluation of aeration and neutralization water pretreatment on the removal of the mentioned contaminants. This dataset is associated with the following publication: Pinto, P., S. Al-Abed, and J. McKernan. Comparison of the efficiency of chitinous and ligneous substrates in metal and sulfate removal from mining-influenced water. JOURNAL OF ENVIRONMENTAL MANAGEMENT. Elsevier Science Ltd, New York, NY, USA, 227(1): 321-328, (2018).

The primary objective of this study was to evaluate the long-term effectiveness of a chitin (crushed crab shells) substrate compared to traditional ligneous (wood chips, hay, and manure) substrates on Zn, other metals (Al, Cu, Fe, Cd, Mn), and sulfate removal in MIW under anaerobic column bioreactor conditions. The secondary objective includes the evaluation of aeration and neutralization water pretreatment on the removal of the mentioned contaminants. This dataset is associated with the following publication: Pinto, P., S. Al-Abed, and J. McKernan. Comparison of the efficiency of chitinous and ligneous substrates in metal and sulfate removal from mining-influenced water. JOURNAL OF ENVIRONMENTAL MANAGEMENT. Elsevier Science Ltd, New York, NY, USA, 227(1): 321-328, (2018).

XRD and TEM images. This dataset is associated with the following publication: Nakarmi, A., S. Bourdo, L. Ruhl, S.R. Kanel, M. Nadagouda, P. Kumar Alla, I. Pavel, and T. Viswanathan. Benign Zinc Oxide Betaine-Modified Biochar Nanocomposites for Phosphate Removal from Aqueous Water. JOURNAL OF ENVIRONMENTAL MANAGEMENT. Elsevier Science Ltd, New York, NY, USA, 272( ): 111048, (2020).

XRD and TEM images. This dataset is associated with the following publication: Nakarmi, A., S. Bourdo, L. Ruhl, S.R. Kanel, M. Nadagouda, P. Kumar Alla, I. Pavel, and T. Viswanathan. Benign Zinc Oxide Betaine-Modified Biochar Nanocomposites for Phosphate Removal from Aqueous Water. JOURNAL OF ENVIRONMENTAL MANAGEMENT. Elsevier Science Ltd, New York, NY, USA, 272( ): 111048, (2020).

[4:05 PM] Reed, Coral Biochars with high phosphate (P) contents are promising amendments to remediate metal-contaminated soils due to their ability to form stable metal-P precipitates. However, their performance is usually assessed at a single pH. This study investigated the sorption of Pb, Cu, Zn, Cd, and Ni by poultry litter (PL) biochar across a pH range using sorption edge, isotherm, and kinetics experiments. Metal sorption was strongly pH-dependent with increased sorption at higher pH. The affinity of the PL biochar for the metals decreased in the order of Pb>>Cu>Zn>Cd>Ni. In all cases, ≤21% of the sorbed metals were exchangeable, indicating that stable metal-biochar associations were formed. Sorption kinetics experiments demonstrated that reaction rates were slower at pH 4.5 than 6.5 for Pb, Cu, and Cd whereas those for Zn and Ni were unaffected by pH. The results suggested that metal-P precipitation was favored for Cu, Cd, and Zn at pH≥5.5, or Pb at any pH. This indicates that PL-derived biochars can be effective amendments for contaminated soils given that the soils are not too acidic. Experimental data were described using a pH-dependent Freundlich-type isotherm and its kinetic analog. Sorption edges and isotherms were reasonably described for Pb, Zn, Cd, and Ni (r2≥0.83). Kinetics data were best described using model parameters obtained from sorption edge experiments due to similarities between the input metal concentrations. This modeling approach has superior descriptive capabilities than traditional empirical approaches while maintaining relative simplicity. Moreover, pH-dependent equilibrium and kinetic sorption can be described using a single set of parameters. This dataset is associated with the following publication: Padilla, J.T., D. Watts, A.A. Szogi, and M. Johnson. Evaluation of a pH- and time-dependent model for the sorption of heavy metal cations by poultry litter-derived biochar. CHEMOSPHERE. Elsevier Science Ltd, New York, NY, USA, 347: 140688, (2024).

[4:05 PM] Reed, Coral Biochars with high phosphate (P) contents are promising amendments to remediate metal-contaminated soils due to their ability to form stable metal-P precipitates. However, their performance is usually assessed at a single pH. This study investigated the sorption of Pb, Cu, Zn, Cd, and Ni by poultry litter (PL) biochar across a pH range using sorption edge, isotherm, and kinetics experiments. Metal sorption was strongly pH-dependent with increased sorption at higher pH. The affinity of the PL biochar for the metals decreased in the order of Pb>>Cu>Zn>Cd>Ni. In all cases, ≤21% of the sorbed metals were exchangeable, indicating that stable metal-biochar associations were formed. Sorption kinetics experiments demonstrated that reaction rates were slower at pH 4.5 than 6.5 for Pb, Cu, and Cd whereas those for Zn and Ni were unaffected by pH. The results suggested that metal-P precipitation was favored for Cu, Cd, and Zn at pH≥5.5, or Pb at any pH. This indicates that PL-derived biochars can be effective amendments for contaminated soils given that the soils are not too acidic. Experimental data were described using a pH-dependent Freundlich-type isotherm and its kinetic analog. Sorption edges and isotherms were reasonably described for Pb, Zn, Cd, and Ni (r2≥0.83). Kinetics data were best described using model parameters obtained from sorption edge experiments due to similarities between the input metal concentrations. This modeling approach has superior descriptive capabilities than traditional empirical approaches while maintaining relative simplicity. Moreover, pH-dependent equilibrium and kinetic sorption can be described using a single set of parameters. This dataset is associated with the following publication: Padilla, J.T., D. Watts, A.A. Szogi, and M. Johnson. Evaluation of a pH- and time-dependent model for the sorption of heavy metal cations by poultry litter-derived biochar. CHEMOSPHERE. Elsevier Science Ltd, New York, NY, USA, 347: 140688, (2024).

Data regarding the evaluation of the toxicity of zinc in 1-, 3-, 8-, 24-, and 48-hour exposures with a cladoceran (Ceriodaphnia dubia), and in 1-, 3-, 8-, 24-, and 96-hour exposures with rainbow trout (Oncorhynchus mykiss) on survival and mobility of test organisms.

Data is for 9 figures that include raw analyses of heavy metal experiment results including, screening batch tests, FTIR, XRD, pH effects Kinetic batch tests, Isotherm modeling, (Langmuir, Freundlich, Redlich-Peterson), and Column tests. This dataset is associated with the following publication: Wallace, A., C. Su, M. Sexton, and W. Sun. Evaluation of the Immobilization of Co-Existing Heavy Metal Ions of Pb2+, Cd2+, and Zn2+ from Water by Dairy Manure-Derived Biochar: Performance and Reusability. JOURNAL OF ENVIRONMENTAL ENGINEERING. American Society of Civil Engineers (ASCE), Reston, VA, USA, 148(6): 04022021, (2022).