A review on plant-microbial interactions, functions, mechanisms and emerging trends in bioretention system to improve multi-contaminated stormwater treatment

2021 ◽  
Vol 294 ◽  
pp. 113108
Author(s):  
Tariq Mehmood ◽  
Gajendra Kumar Gaurav ◽  
Liu Cheng ◽  
Jiří Jaromír Klemeš ◽  
Muhammad Usman ◽  
...  
Keyword(s):  
Microbial Interactions ◽  
Stormwater Treatment ◽  
Bioretention System ◽  
Emerging Trends

scholarly journals Enhancing nitrate and phosphorus removal from stormwater in fold-flow bioretention system with saturated zones

2021 ◽  
Author(s):  
Yang Ran ◽  
Zheng-rong Fu ◽  
Man-ying Ma ◽  
Xian Liu
Keyword(s):  
Total Phosphorus ◽  
Phosphorus Removal ◽  
Removal Rate ◽  
Stormwater Treatment ◽  
Nitrogen And Phosphorus ◽  
Runoff Water ◽  
Nitrogen And Phosphorus Removal ◽  
Bioretention System ◽  
Set Up ◽  
Sludge Particle

Abstract The traditional bioretention systems possess a remarkably low nitrogen and phosphorus removal effect. The removal rate fluctuates greatly, and even appears as negative removal of nitrogen and phosphorus. The four simulated bioretention experimental columns with different bilayer media, packing composition and structure were constructed. Based on the traditional fillers, the modified composite fillers with hydroxy-aluminum and modified vermiculite sludge particle (HAVSP) were added. The traditional filler (C1) and the modified composite filler (C2) were added respectively, moreover the saturated zones were set up to enhance the effect of nitrogen and phosphorus removal. Removal of nutrients from experimental columns by simulated runoff efficiency was evaluated and compared. In addition, the effect of media depth on phosphorus retention and denitrifying enzyme activity in bioretention columns was also evaluated. The experimental column #2 filled with C2 had the optimum removal effect on total phosphorus (93.70%), however, the removal effect of total phosphorus by filling C1 experimental columns was insufficient (57.36%). Designed to remove nitrate (NO3−-N) and total nitrogen (TN), the experimental column #4 showed the best performance (83.54% and 92.15%, respectively). In this study, we propose a fold-flow bioretention system by filling HAVSP in combination with saturated zones. The runoff water quality can be effectively improved, and a new bioretention cell configuration can be provided for efficient stormwater treatment.

Schottky diodes based on 2D materials for environmental gas monitoring: a review on emerging trends, recent developments and future perspectives

2021 ◽  
Author(s):  
Minu Mathew ◽  
Chandra Sekhar Rout
Keyword(s):  
Gas Sensing ◽  
2D Materials ◽  
Schottky Diodes ◽  
High Sensitivity ◽  
Future Perspectives ◽  
Working Temperature ◽  
Emerging Trends ◽  
Gas Sensing Properties ◽  
Recent Developments ◽  
Sensitivity And Selectivity

This review details the fundamentals, working principles and recent developments of Schottky junctions based on 2D materials to emphasize their improved gas sensing properties including low working temperature, high sensitivity, and selectivity.

A peek in the micro-sized world: a review of design principles, engineering tools, and applications of engineered microbial community

2020 ◽  
Vol 48 (2) ◽  
pp. 399-409
Author(s):  
Baizhen Gao ◽  
Rushant Sabnis ◽  
Tommaso Costantini ◽  
Robert Jinkerson ◽  
Qing Sun
Keyword(s):  
Microbial Community ◽  
Microbial Communities ◽  
Environmental Remediation ◽  
Real Life ◽  
Design Principles ◽  
Microbial Interactions ◽  
Potential Applications ◽  
New Gene ◽  
Global Biogeochemical Cycles ◽  
Synthetic Microbial Communities

Microbial communities drive diverse processes that impact nearly everything on this planet, from global biogeochemical cycles to human health. Harnessing the power of these microorganisms could provide solutions to many of the challenges that face society. However, naturally occurring microbial communities are not optimized for anthropogenic use. An emerging area of research is focusing on engineering synthetic microbial communities to carry out predefined functions. Microbial community engineers are applying design principles like top-down and bottom-up approaches to create synthetic microbial communities having a myriad of real-life applications in health care, disease prevention, and environmental remediation. Multiple genetic engineering tools and delivery approaches can be used to ‘knock-in' new gene functions into microbial communities. A systematic study of the microbial interactions, community assembling principles, and engineering tools are necessary for us to understand the microbial community and to better utilize them. Continued analysis and effort are required to further the current and potential applications of synthetic microbial communities.

Medicaid 101: A Primer for Speech-Language Pathologists in Education Settings

2011 ◽  
Vol 12 (1) ◽  
pp. 3-11
Author(s):  
Janet Deppe ◽  
Marie Ireland
Keyword(s):  
State Level ◽  
The State ◽  
Speech Language Pathologists ◽  
Inspector General ◽  
Medical Necessity ◽  
School Settings ◽  
Speech Language Pathologist ◽  
School Based ◽  
Emerging Trends

This paper will provide the school-based speech-language pathologist (SLP) with an overview of the federal requirements for Medicaid, including provider qualifications, “under the direction of” rule, medical necessity, and covered services. Billing, documentation, and reimbursement issues at the state level will be examined. A summary of the findings of the Office of Inspector General audits of state Medicaid plans is included as well as what SLPs need to do in order to ensure that services are delivered appropriately. Emerging trends and advocacy tools will complete the primer on Medicaid services in school settings.

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