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Your search keyword '"Tao, Hu-Chun"' showing total 42 results
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42 results on '"Tao, Hu-Chun"'

19. Uranium sequestration in sediment at an iron-rich contaminated site at Oak Ridge, Tennessee via. bioreduction followed by reoxidation

Author

Li, Peng-Song, primary, Wu, Wei-Min, additional, Phillips, Debra H., additional, Watson, David B., additional, Kelly, Shelly, additional, Li, Bing, additional, Mehlhorn, Tonia, additional, Lowe, Kenneth, additional, Earles, Jennifer, additional, Tao, Hu-Chun, additional, Zhang, Tong, additional, and Criddle, Craig S., additional

Published
2019
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20. Ubiquity of polystyrene digestion and biodegradation within yellow mealworms, larvae of Tenebrio molitor Linnaeus (Coleoptera: Tenebrionidae)

Author

Shan, M.H., Yang, Shanshan, Wu, Wei-Min, Fan, Han-Qing, Brandon, Anja Malawi, Receveur, Joseph, Li, Yiran, Fan, Rui, Wang, Zhi-Yue, Gao, Shu-Hong, McClellan, Rebecca, Daliang, Ning, Phillips, Debra, Wang, Hongtao, Peng, Bo-Yu, Li, Ping, Cai, Shen-Yang, Ding, Ling-Yun, Cai, Wei-Wei, Yang, Jun, Zheng, Min, Ren, Jie, Zhang, Ya-Lei, Gao, Jie, Xing, Defeng, Ren, Nan-Qi, Waymouth, Robert, Zhou, Jizhong, Tao, Hu-Chun, Picard, Christine, Benbow, Mark, and Criddle, Craig

Subjects
0301 basic medicine, China, Environmental Engineering, Health, Toxicology and Mutagenesis, media_common.quotation_subject, Insect, 010501 environmental sciences, Biology, 01 natural sciences, 03 medical and health sciences, Animals, Environmental Chemistry, Food science, Feces, 0105 earth and related environmental sciences, media_common, Larva, Bacteria, Bran, Frass, Public Health, Environmental and Occupational Health, General Medicine, General Chemistry, Biodegradation, Pollution, Anti-Bacterial Agents, Gastrointestinal Microbiome, Coleoptera, Biodegradation, Environmental, 030104 developmental biology, Microbial population biology, Polystyrenes, Gentamicins, Digestion
Abstract

Academics researchers and “citizen scientists” from 22 countries confirmed that yellow mealworms, the larvae of Tenebrio molitor Linnaeus, can survive by eating polystyrene (PS) foam. More detailed assessments of this capability for mealworms were carried out by12 sources: five from the USA, six from China, and one from Northern Ireland. All of these mealworms digested PS foam. PS mass decreased and depolymerization was observed, with appearance of lower molecular weight residuals and functional groups indicative of oxidative transformations in extracts from the frass (insect excrement). An addition of gentamycin (30 mg g−1), a bactericidal antibiotic, inhibited depolymerization, implicating the gut microbiome in the biodegradation process. Microbial community analyses demonstrated significant taxonomic shifts for mealworms fed diets of PS plus bran and PS alone. The results indicate that mealworms from diverse locations eat and metabolize PS and support the hypothesis that this capacity is independent of the geographic origin of the mealworms, and is likely ubiquitous to members of this species.

Published
2018

23. Ubiquity of polystyrene digestion and biodegradation within yellow mealworms, larvae of Tenebrio molitor Linnaeus (Coleoptera: Tenebrionidae)

Author

Yang, Shan-Shan, primary, Wu, Wei-Min, additional, Brandon, Anja M., additional, Fan, Han-Qing, additional, Receveur, Joseph P., additional, Li, Yiran, additional, Wang, Zhi-Yue, additional, Fan, Rui, additional, McClellan, Rebecca L., additional, Gao, Shu-Hong, additional, Ning, Daliang, additional, Phillips, Debra H., additional, Peng, Bo-Yu, additional, Wang, Hongtao, additional, Cai, Shen-Yang, additional, Li, Ping, additional, Cai, Wei-Wei, additional, Ding, Ling-Yun, additional, Yang, Jun, additional, Zheng, Min, additional, Ren, Jie, additional, Zhang, Ya-Lei, additional, Gao, Jie, additional, Xing, Defeng, additional, Ren, Nan-Qi, additional, Waymouth, Robert M., additional, Zhou, Jizhong, additional, Tao, Hu-Chun, additional, Picard, Christine J., additional, Benbow, Mark Eric, additional, and Criddle, Craig S., additional

Published
2018
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35. Surface-engineered Saccharomyces cerevisiae cells displaying redesigned CadR for enhancement of adsorption of cadmium ( II).

Author

Tao, Hu‐Chun, Li, Peng‐Song, Liu, Qi‐Song, Su, Jie, Qiu, Guo‐Yu, and Li, Zi‐Gang

Subjects
HEAVY metals removal (Sewage purification), SACCHAROMYCES cerevisiae, CADMIUM, ADSORPTION capacity, AMINO acids, GENETIC recombination
Abstract

BACKGROUND The use of cell-surface display technology to express recombinant proteins on a microbial cell surface can enhance metal adsorption to microbial cells. The transcription factor CadR of Pseudomonas putida shows highly selective affinity with Cd2+. RESULTS CadR was genetically engineered by truncating 47 N-terminal amino acids and 21 C-terminal amino acids in order to maximize its expression efficiency while maintaining its metal-binding domain. The redesigned CadR (named T68CadR) was then displayed with Saccharomyces cerevisiae a-agglutinin cell-surface display system. This engineering approach enhanced the H+/ OH− buffering capacity and the Cd2+ adsorption capacity of yeast cells. The surface-engineered cells also performed well at mesophilic and higher temperatures (30-50 °C) under neutral or alkalescent conditions. With an initial concentration of 1.0 mg L−1, the Cd2+ removal efficiency remained 85% when the concentration of Na+ changed from 0 to 400 mmol L−1 ( pH 7.8). The surface-engineered cells also showed highly selective adsorption to Cd2+ in the presence of Zn2+ and Pb2+. CONCLUSIONS T68CadR displayed yeast cells constructed in this study provide an option to selectively remove Cd in water. It also might be promising as a tool to determine CadR's Cd-binding mechanism and to improve its selectivity and affinity to Cd2+. © 2015 Society of Chemical Industry [ABSTRACT FROM AUTHOR]

Published
2016
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40. Cell surface engineering of microorganisms towards adsorption of heavy metals.

Author

Li, Peng-Song and Tao, Hu-Chun

Subjects
*CELL membranes, *MICROORGANISMS, *HEAVY metal absorption & adsorption, *HEAVY metal toxicology, *HEAVY metals & the environment, *BIOACCUMULATION, *GRAM-negative bacteria
Abstract

Heavy metal contamination has become a worldwide environmental concern due to its toxicity, non-degradability and food-chain bioaccumulation. Conventional physical and chemical treatment methods for heavy metal removal have disadvantages such as cost-intensiveness, incomplete removal, secondary pollution and the lack of metal specificity. Microbial biomass-based biosorption is one of the approaches gaining increasing attention because it is effective, cheap, and environmental friendly and can work well at low concentrations. To enhance the adsorption properties of microbial cells to heavy metal ions, the cell surface display of various metal-binding proteins/peptides have been performed using a cell surface engineering approach. The surface engineering of Gram-negative bacteria, Gram-positive bacteria and yeast towards the adsorption of heavy metals are reviewed in this article. The problems and future perspectives of this technology are discussed. [ABSTRACT FROM AUTHOR]

Published
2015
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42. [Treatment of Cu(2+)-containing wastewater by microbial fuel cell with excess sludge as anodic substrate].

Author

Liang M, Tao HC, Li SF, Li W, Zhang LJ, and Ni JR

Subjects
Electrodes, Industrial Microbiology, Substrate Specificity, Bioelectric Energy Sources, Copper isolation & purification, Sewage chemistry, Waste Disposal, Fluid methods
Abstract

The two-chamber microbial fuel cells (MFCs) were constructed with excess sludge as the anodic substrate and CuSO4 solution as the catholyte. The start up method, degradation of the anodic sludge, removal of the Cu2+ and products on cathode were investigated in the study. The results of batch experiments showed that Cu2+ can be used as cathodic electron acceptors, e. g. a stable voltage output of 0.478 V and a maximum power density of 536 mW/m3 were obtained at external resistance of 1 000 omega and Cu2+ concentration of 6 400 mg/L. The Cu2+ contained in wastewater could be removed effectively by the MFC process, e. g. 97.8% of Cu2+ was removed in a MFC reactor at the end of 288 h with initial Cu2+ concentration of 1 000 mg/L and external resistance of 0 omega. The cathodic products depended on cathodic reducibility, most of Cu2+ was deposited as Cu2O and a small part as Cu4 (OH), 6SO4 with lower cathodic reducibility, metal copper deposited on the cathode with higher cathodic reducibility. Using excess sludge as anodic substrate could support the MFCs for long-term operation. The acclimation stage of the exoelectrogenic bacteria on the anode had an impact on MFC performance and cathodic reduction of Cu2+, and the stability of exoelectrogenic biofilm on anode could be determined by monitoring the anode potential. The MFC with excess sludge as anodic substrate can degrade organic matter in sludge and accomplish Cu(2+) -containing wastewater treatment and copper recovery simultaneously.

Published
2011

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