Sorption of Lincomycin by Manure-Derived Biochars from Water

Abstract

The presence of antibiotics in agroecosystems raises concerns about the proliferation of antibiotic-resistant bacteria and adverse effects to human health. Soil amendment with biochars pyrolized from manures may be a win-win strategy for novel manure management and antibiotics abatement. In this study, lincomycin sorption by manure-derived biochars was examined using batch sorption experiments. Lincomycin sorption was characterized by two-stage kinetics with fast sorption reaching quasi-equilibrium in the first 2 d, followed by slow sorption over 180 d. The fast sorption was primarily attributed to surface adsorption, whereas the long-term slow sorption was controlled by slow diffusion of lincomycin into biochar pore structures. Two-day sorption experiments were performed to explore effects of biochar particle size, solid/water ratio, solution pH, and ionic strength. Lincomycin sorption to biochars was greater at solution pH 6.0 to 7.5 below the dissociation constant of lincomycin (7.6) than at pH 9.9 to 10.4 above its dissociation constant. The enhanced lincomycin sorption at lower pH likely resulted from electrostatic attraction between the positively charged lincomycin and the negatively charged biochar surfaces. This was corroborated by the observation that lincomycin sorption decreased with increasing ionic strength at lower pH (6.7) but remained constant at higher pH (10). The long-term lincomycin sequestration by biochars was largely due to pore diffusion plausibly independent of solution pH and ionic composition. Therefore, manure-derived biochars had lasting lincomycin sequestration capacity, implying that biochar soil amendment could significantly affect the distribution, transport, and bioavailability of lincomycin in agroecosystems.

Antibiotic Use in Agriculture and Its Consequential Resistance in Environmental Sources: Potential Public Health Implications

“…Accordingly, these antibiotics released usually consist of different types, and consequently, they do not degrade, all at the same time, i.e., they degrade at different rates in the environment over time by the main elimination processes, including sorption, photo degradation, biodegradation, and oxidation [ 61 , 62 ]. Albeit, other applied methods, such as adsorption, filtration, coagulation, sedimentation, advanced oxidation processes have been implemented [ 63 ].…”

Micropore clogging by leachable pyrogenic organic carbon: A new perspective on sorption irreversibility and kinetics of hydrophobic organic contaminants to black carbon

“…Moreover, biochar (an engineered BC) has gained increasing attention as a promising soil amendment to increase soil carbon storage, soil quality, nutrient and water retention, and contaminant immobilization (Cornelissen et al, 2005;Lehmann, 2007). BC has strong sorption affinities for many organic contaminants such as polycyclic aromatic hydrocarbons (PAHs), pesticides, and pharmaceuticals (Chen et al, 2008;Liu et al, 2016;Loganathan et al, 2009;. For instance, BC was reported to exhibit 10-100 times greater sorption of phenanthrene than soil amorphous organic matter (e.g., humic substances) (Cornelissen and Gustafsson, 2004;Cornelissen et al, 2005;Nam et al, 2008).…”

Antibiotics in Agroecosystems: Introduction to the Special Section

“…This review evaluates the current state of understanding of these interactions using available literature so that key knowledge gaps can be identified. Kulesza et al (2016) Manure injection affects the fate of pirlimycin in surface runoff and soil Technical Kumar and Gupta (2016) A framework to predict uptake of trace organic compounds by plants Technical Liu et al (2016) Sorption of lincomycin by manure-derived biochars from water Technical Increased use of antibiotics globally, coupled with advancements in analytical technology, has resulted in more frequent detection of antibiotic compounds and, to a lesser extent, their metabolites, in a variety of agroecosystem compartments, including soil, water, sediment, and biota (Kolpin et al, 2002;Aga et al, 2005;Batt et al, 2006;Pruden et al, 2012;Zhang et al, 2013). Despite advances in detection methods, limited data are available on the occurrence and fate of antibiotics in agroecosystems, as well as their spatial and temporal distribution.…”

“…This special section contains five core review papers, 19 technical, review, and issues papers (Table 1), and a glossary of commonly used terms. The topics include the occurrence (Durso et al, 2016; McCall et al, 2016), detection (Wallace and Aga, 2016), dissemination (Hafner et al, 2016; Ruuskanen et al, 2016; Sura et al, 2016), fate (Amarakoon et al, 2016; Kulesza et al, 2016; Liu et al, 2016; Xu et al, 2016; Youngquist et al, 2016), plant uptake (Franklin et al, 2016; Kumar and Gupta, 2016), microbiology (Nordenholt et al, 2016; Roberts and Schwarz, 2016; Rothrock et al, 2016a; Whitehead and Cotta, 2016; Zwonitzer et al, 2016), and ecological risk (Subbiah et al, 2016) of antibiotics and/or antibiotic resistance in agroecosystems and surrounding natural areas. The antibiotic drugs, ARB, and ARGs discussed in this special section are predominantly associated with animal production but also include fruit and vegetable production, as well as those associated with the application of biosolids to agricultural lands.…”