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Po-Yen Wang
Department of Civil Engineering, Widener University, Chester, PA 19013, USA

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Review
Published: 18 May 2021 in Sustainability
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Biochar is a carbon-rich material prepared from the pyrolysis of biomass under various conditions. Recently, biochar drew great attention due to its promising potential in climate change mitigation, soil amendment, and environmental control. Obviously, biochar can be a beneficial soil amendment in several ways including preventing nutrients loss due to leaching, increasing N and P mineralization, and enabling the microbial mediation of N2O and CO2 emissions. However, there are also conflicting reports on biochar effects, such as water logging and weathering induced change of surface properties that ultimately affects microbial growth and soil fertility. Despite the voluminous reports on soil and biochar properties, few studies have systematically addressed the effects of biochar on the sequestration of carbon, nitrogen, and phosphorus in soils. Information on microbially-mediated transformation of carbon (C), nitrogen (N), and phosphorus (P) species in the soil environment remains relatively uncertain. A systematic documentation of how biochar influences the fate and transport of carbon, phosphorus, and nitrogen in soil is crucial to promoting biochar applications toward environmental sustainability. This report first provides an overview on the adsorption of carbon, phosphorus, and nitrogen species on biochar, particularly in soil systems. Then, the biochar-mediated transformation of organic species, and the transport of carbon, nitrogen, and phosphorus in soil systems are discussed. This review also reports on the weathering process of biochar and implications in the soil environment. Lastly, the current knowledge gaps and priority research directions for the biochar-amended systems in the future are assessed. This review focuses on literatures published in the past decade (2009–2021) on the adsorption, degradation, transport, weathering, and transformation of C, N, and P species in soil systems with respect to biochar applications.

ACS Style

Shu-Yuan Pan; Cheng-Di Dong; Jenn-Fang Su; Po-Yen Wang; Chiu-Wen Chen; Jo-Shu Chang; Hyunook Kim; Chin-Pao Huang; Chang-Mao Hung. The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems. Sustainability 2021, 13, 5612 .

AMA Style

Shu-Yuan Pan, Cheng-Di Dong, Jenn-Fang Su, Po-Yen Wang, Chiu-Wen Chen, Jo-Shu Chang, Hyunook Kim, Chin-Pao Huang, Chang-Mao Hung. The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems. Sustainability. 2021; 13 (10):5612.

Chicago/Turabian Style

Shu-Yuan Pan; Cheng-Di Dong; Jenn-Fang Su; Po-Yen Wang; Chiu-Wen Chen; Jo-Shu Chang; Hyunook Kim; Chin-Pao Huang; Chang-Mao Hung. 2021. "The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems." Sustainability 13, no. 10: 5612.

Review
Published: 24 August 2018 in Environments
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Despite the fact that the adverse health effects due to the intake of lead have been well studied and widely recognized, lead contamination in drinking water has been reoccurring worldwide, with some incidents escalating into a public drinking water crisis. As lead contamination is often related to lead-based pipes close to or inside homes, it is not realistic, at least in the near term, to remove and replace all lead connection pipes and lead-based plumbing. Effective monitoring of lead concentration at consumers’ water taps remains critical for providing consumers with first-hand information and preventing potential wide-spread lead contamination in drinking water. This review paper examines the existing common technologies for laboratory testing and on-site measuring of lead concentrations. As the conventional analytical techniques for lead detection require using expensive instruments, as well as a high time for sample preparation and a skilled operator, an emphasis is placed on reviewing ion-selective electrode (ISE) technology due to its superior performance, low cost, ease of use, and its promising potential to be miniaturized and integrated into standalone sensing units. In a holistic way, this paper reviews and discusses the background, different types of ISEs are reviewed and discussed, namely liquid-contact ISEs and solid-contact ISEs. Along with the potential opportunities for further research, the limitations and unique challenges of ISEs for lead detection are also discussed in detail.

ACS Style

Xiaochao Tang; Po-Yen Wang; Gabrielle Buchter. Ion-Selective Electrodes for Detection of Lead (II) in Drinking Water: A Mini-Review. Environments 2018, 5, 95 .

AMA Style

Xiaochao Tang, Po-Yen Wang, Gabrielle Buchter. Ion-Selective Electrodes for Detection of Lead (II) in Drinking Water: A Mini-Review. Environments. 2018; 5 (9):95.

Chicago/Turabian Style

Xiaochao Tang; Po-Yen Wang; Gabrielle Buchter. 2018. "Ion-Selective Electrodes for Detection of Lead (II) in Drinking Water: A Mini-Review." Environments 5, no. 9: 95.