Hydrothermal synthesis of magnetic sludge biochar for tetracycline and ciprofloxacin adsorptive removal.
TL;DR: Fe/Zn-SBC had the high selective adsorption capacity for TC and CIP in a wide pH range and even at the high ionic strength, and suggested that it is a promising adsorbent for antibiotics removal.
About: This article is published in Bioresource Technology.The article was published on 2021-01-01. It has received 153 citations till now. The article focuses on the topics: Biochar & Adsorption.
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TL;DR: ZIF-67@WA (wood aerogel) has been successfully fabricated through in-situ anchoring of ZIF -67 rhombic dodecahedron on the wood aerogels obtained by selectively removing lignin and hemicellulose from natural wood as mentioned in this paper.
105 citations
TL;DR: In this article , the main focus was laid on unconventional adsorbents such as Biochar, Biopolymers, Carbon Nanotubes, Clays, Metal-Organic Frameworks, Microalgae and some miscellaneous adsorents.
85 citations
85 citations
TL;DR: In this article, a pomelo peel-derived magnetic biochar composite, biochar supported MgFe2O4 (BMF) was fabricated and adopted for Levofloxacin (LFX) adsorption.
70 citations
TL;DR: Magnetic biochar (MBC) is extensively applied on contaminants removal from environmental medium for achieving environmental-friendly remediation with reduction of secondary pollution owing to its easy recovery and separation as mentioned in this paper .
67 citations
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TL;DR: This is the first comprehensive study which demonstrates an alarming usage and emission of various antibiotics in China and the bacterial resistance rates in the hospitals and aquatic environments were found to be related to the PECs and antibiotic usages, especially for those antibiotics used in the most recent period.
Abstract: Antibiotics are widely used in humans and animals, but there is a big concern about their negative impacts on ecosystem and human health after use. So far there is a lack of information on emission inventory and environmental fate of antibiotics in China. We studied national consumption, emissions, and multimedia fate of 36 frequently detected antibiotics in China by market survey, data analysis, and level III fugacity modeling tools. Based on our survey, the total usage for the 36 chemicals was 92700 tons in 2013, an estimated 54000 tons of the antibiotics was excreted by human and animals, and eventually 53800 tons of them entered into the receiving environment following various wastewater treatments. The fugacity model successfully predicted environmental concentrations (PECs) in all 58 river basins of China, which are comparable to the reported measured environmental concentrations (MECs) available in some basins. The bacterial resistance rates in the hospitals and aquatic environments were found to b...
2,651 citations
TL;DR: This review summarizes the characteristics of biochar (e.g., surface area, porosity, pH, surface charge, functional groups, and mineral components) and main mechanisms governing sorption of As, Cr, Cd, Pb, and Hg by biochar and includes competitive sorption mechanisms of co-existing metals.
1,091 citations
TL;DR: Select physicochemical results for five manure-based biochars pyrolyzed at 350 and 700°C are reported: swine separated-solids; paved-feedlot manure; dairy manure; poultry litter; and turkey litter.
1,059 citations
TL;DR: A global-scale analysis of the presence of 203 pharmaceuticals across 41 countries is presented and it is shown that contamination is extensive due to widespread consumption and subsequent disposal to rivers.
Abstract: Pharmaceuticals have emerged as a major group of environmental contaminants over the past decade but relatively little is known about their occurrence in freshwaters compared to other pollutants. We present a global-scale analysis of the presence of 203 pharmaceuticals across 41 countries and show that contamination is extensive due to widespread consumption and subsequent disposal to rivers. There are clear regional biases in current understanding with little work outside North America, Europe, and China, and no work within Africa. Within individual countries, research is biased around a small number of populated provinces/states and the majority of research effort has focused upon just 14 compounds. Most research has adopted sampling techniques that are unlikely to provide reliable and representative data. This analysis highlights locations where concentrations of antibiotics, cardiovascular drugs, painkillers, contrast media, and antiepileptic drugs have been recorded well above thresholds known to cause toxic effects in aquatic biota. Studies of pharmaceutical occurrence and effects need to be seen as a global research priority due to increasing consumption, particularly among societies with aging populations. Researchers in all fields of environmental management need to work together more effectively to identify high risk compounds, improve the reliability and coverage of future monitoring studies, and develop new mitigation measures.
618 citations
TL;DR: In the batch experiments of cadmium(II) adsorption, the removal capacity of biochars improved under higher temperature, especially at 800°C and 900°C even one order of magnitude higher than that of the commercial activated carbon.
562 citations