Explanipedia

Low dissolved oxygen nitrification through kinetic selection Open

José Jimenez, Kayla Bauhs, Mark W. Miller, Peter Dold, Ahmed Al‐Omari , et al. · 2025

Recent research in wastewater treatment demonstrates that activated sludge plants can be operated more efficiently in terms of energy and carbon utilization without the need for new infrastructure through the implementation of low dissolve…

Machine learning informs mitigation strategies for nitrous oxide emissions from wastewater operations Open

Gnanaraj Augustine, Kartik Chandran · 2025

This study focused on the development of machine-learning- (ML) based strategies for mitigating nitrous oxide (N 2 O) emissions from various wastewater treatment systems in the United States measured using a benchmark USEPA-endorsed protoc…

(Re-)engineering microbial community structure-function-metabolism toward sustainable wastewater treatment and sanitation Open

Kartik Chandran · 2025

Our Experience of OSAKA Regimen (Bladder Preservation) in Patients with Advanced Bladder Cancer Open

Ginil Kumar Pooleri, Manav Gideon, Kartik Chandran, K. Sreekumar, Sandeep Sreedharan , et al. · 2024

Projections of wastewater as an indicator of COVID-19 cases in corrections facilities: a modelling study Open

Dan Han, Pamela Linares, Rochelle H. Holm, Kartik Chandran, Ted Smith · 2023

Background Although prison facilities are not fully isolated from the communities they are located within, the majority of the population is confined and requires high levels of health vigilance and protection. This study sought to examine…

Synergistic lignin degradation between Phanerochaete chrysosporium and Fenton chemistry is mediated through iron cycling and ligninolytic enzyme induction. Open

Julian J.A. van der Made, Elizabeth A. Landis, Griffin T. Deans, Ruby A. Lai, Kartik Chandran · 2023

Removal of recalcitrant lignin from wastewater remains a critical bottleneck in multiple aspects relating to microbial carbon cycling ranging from incomplete treatment of biosolids during wastewater treatment to limited conversion of bioma…

Meta-omics analysis revealed structural and metabolic shifts of acidification communities after feeding with thermal hydrolysis pretreated food waste Open

Minxi Jiang, Kartik Chandran, Wendell Khunjar, Kevin R. Gilmore · 2023

In this study, a reduced total volatile fatty acid (VFA) yield (VFA/tCOD, P = .003) and accumulated fractions of butyric acid (BA) (BA/total VFA, P < 0.001) was observed after feeding the arrested anaerobic digestor with thermal hydrolysis…

Primary Well-Differentiated Neuroendocrine Tumor of the Kidney Open

V. Krishna Prasad, Charakkulam Vijay Sreelakshmi, Kartik Chandran, Shashank Agrawal, Ginil Kumar Pooleri , et al. · 2023

Primary neuroendocrine tumors (NET) of the kidney are rare. They present with varied symptoms, making their diagnosis difficult clinically as well as pathologically. We present to you the case of a renal NET, which presented in a young fem…

THE DISTRIBUTION OF MICROPLASTIC IN SEDIMENT AT KHUAN KHI SIAN WETLAND, SOUTHERN THAILAND Open

Prakrit Noppradit, Siriporn Pradit, Karnda Sengloyluan, Thongchai Nitiratsuwan, PA. JITKAEW , et al. · 2023

Studies around the world show that there is an increasing accumulation of microplastic pollution in the sediment.This study concerned the accumulation of microplastics in wetlands (Khuan Khi Sian, southern Thailand) sediment cores that are…

NYC Metropolitan Wastewater Reveals Links between Sars-Cov-2 Amino Acid Mutations and Disease Outcomes Open

Archana Anand, Chenghua Long, Kartik Chandran · 2023

Divergent microbial structure still results in convergent microbial function during arrested anaerobic digestion of food waste at different hydraulic retention times Open

Minxi Jiang, Wendell Khunjar, Anjie Li, Kartik Chandran · 2022

In this study, two arrested anaerobic digestion bioreactors fed with food waste operated under different hydraulic retention times (HRTs) exhibited long-term stable volatile fatty acid (VFA) production performance including similar total y…

Analysis of SARS-CoV-2 amino acid mutations in New York City Metropolitan wastewater (2020-2022) reveals multiple traits with human health implications across the genome and environment-specific distinctions Open

Anand Archana, Chenghua Long, Kartik Chandran · 2022

We characterize variant diversity, amino acid mutation frequency, functionality and associations with COVID-19 infections in one of the largest datasets of SARS-CoV-2 genome sequences collected from wastewater in the New York metropolitan …

Accelerating Microbial Activity of Soil Aquifer Treatment by Hydrogen Peroxide Open

Liron Friedman, Kartik Chandran, Dror Avisar, Edris Taher, Amanda Kirchmaier-Hurpia , et al. · 2022

Soil aquifer treatment (SAT), as a gravity-based wastewater reuse process, is limited by oxygen availability to the microbial community in the soil. Using oxygen from enzymatic degradation of H2O2 to generate hyper-oxygen conditions can ex…

Microbial response on the first full-scale DEMON® biomass transfer for mainstream deammonification Open

Sabine Marie Podmirseg, María Gómez‐Brandón, Markus Muik, Blaž Stres, Martin Hell , et al. · 2022

Sidestream partial nitritation and deammonification (pN/A) of high-strength ammonia wastewater is a well-established technology. Its expansion to the mainstream is, however mainly impeded by poor retention of anaerobic ammonia oxidizing ba…

Reovirus infection is regulated by NPC1 and endosomal cholesterol homeostasis Open

Paula Ortega-González, Gwen M. Taylor, Rohit K. Jangra, Raquel Tenorio, Isabel Fernández de Castro , et al. · 2022

Cholesterol homeostasis is required for the replication of many viruses, including Ebola virus, hepatitis C virus, and human immunodeficiency virus-1. Niemann-Pick C1 (NPC1) is an endosomal-lysosomal membrane protein involved in cholestero…

Enrichment of a denitratating microbial community through kinetic limitation Open

Matthew Baideme, Chenghua Long, Kartik Chandran · 2022

Denitratation, or the intentionally engineered accumulation of nitrite (NO₂^-) from selective reduction of nitrate (NO₃^-), can be combined with downstream anammox to reduce chemical and energy use…

Interactions between Plastics, Microplastics, and Microbial Communities Open

Jingyi Yang, Kartik Chandran · 2021

Plastics have been an essential part of life. Each year, over 300 million tons of plastics are being processed each year into other products. However, only a small portion of the plastic gets recycled while up to 79% is discarded into land…

Glycerol-driven Denitratation: Process Kinetics, Microbial Ecology, and Operational Controls Open

Matthew Baideme, Chenghua Long, Luke Plante, Jeffrey Starke, Michael Butkus , et al. · 2021

Denitratation, the selective reduction of nitrate to nitrite, is a novel process when coupled with anaerobic ammonium oxidation (anammox) could achieve resource-efficient biological nitrogen removal of ammonium- and nitrate-laden waste str…

Impact of Inoculum Type on the Microbial Community and Power Performance of Urine-Fed Microbial Fuel Cells Open

M.J. Salar-García, Oluwatosin Obata, Halil Kurt, Kartik Chandran, John Greenman , et al. · 2020

Bacteria are the driving force of the microbial fuel cell (MFC) technology, which benefits from their natural ability to degrade organic matter and generate electricity. The development of an efficient anodic biofilm has a significant impa…

Time to act–assessing variations in qPCR analyses in biological nitrogen removal with examples from partial nitritation/anammox systems Open

Shelesh Agrawal, David G. Weissbrodt, Medini K. Annavajhala, Marlene Mark Jensen, José M. Carvajal‐Arroyo , et al. · 2020

Broad neutralization of SARS-related viruses by human monoclonal antibodies Open

Anna Z. Wec, Daniel Wrapp, Andrew S. Herbert, Daniel P. Maurer, Denise Haslwanter , et al. · 2020

Broadly protective vaccines against known and preemergent human coronaviruses (HCoVs) are urgently needed. To gain a deeper understanding of cross-neutralizing antibody responses, we mined the memory B cell repertoire of a convalescent sev…

Meta-azotomics of engineered wastewater treatment processes reveals differential contributions of established and novel models of N-cycling Open

Mee‐Rye Park, Medini K. Annavajhala, Kartik Chandran · 2020

The application of metagenomics and metatranscriptomics to field-scale engineered biological nitrogen removal (BNR) processes revealed a complex N-cycle network (the meta-azotome) therein in terms of microbial structure, potential and exta…

Susceptibility of biofilm forming Pseudomonas aeruginosa and Staphylococcus aureus to antibiotic-adjuvants Open

Madhusudan Rajendran, R. Selvaraj, Nagaiah Hari Prasath, Kartik Chandran, Gurusamy Raman · 2020

Aims:The objective of the present study is to evaluate the possibility of reversing the resistance of pathogens to antibiotics using phytochemicals from plant extracts as antibiotic-adjuvant.Methodology and results: Twenty-one plants were …

Nitrogen removal from water resource recovery facilities using partial nitrification, denitratation-anaerobic ammonia oxidation (PANDA) Open

R. Sharp, Wendell Khunjar, Dennis Daly, Joshua Perez-Terrero, Kartik Chandran , et al. · 2020

Nitrogen removal from wastewater is an energy and chemical intensive process that is becoming increasingly more common around the world. To address the cost and complexity issues associated with biological nitrogen removal from wastewater,…

Resilience and limitations of MFC anodic community when exposed to antibacterial agents Open

Oluwatosin Obata, John Greenman, Halil Kurt, Kartik Chandran, Ioannis Ieropoulos · 2020

This study evaluates the fate of certain bactericidal agents introduced into microbial fuel cell (MFC) cascades and the response of the microbial community. We tested the response of functioning urine fed MFC cascades using two very differ…

Development of efficient electroactive biofilm in urine-fed microbial fuel cell cascades for bioelectricity generation Open

Oluwatosin Obata, M.J. Salar-García, John Greenman, Halil Kurt, Kartik Chandran , et al. · 2020

The Microbial fuel cell (MFC) technology harnesses the potential of some naturally occurring bacteria for electricity generation. Digested sludge is commonly used as the inoculum to initiate the process. There are, however, health hazards …

Issue Information Open

Lilya Boudriche, Zahra Safaei, Deepika Lakshmi Ramasamy, Mika Sillanpää, Amel Boudjemaa , et al. · 2019

ON THE COVER: Modifi ed silica sand acts as an effi cient sorbent for organic pollutants.See related article, "Fe 3 O 4 @GO on silica sand as an effi cient and economical adsorbent; Typical application for removal of phenol and 2,4-dichlor…

Stimulating Nitrogen Biokinetics with the Addition of Hydrogen Peroxide to Secondary Effluent Biofiltration Open

Liron Friedman, Hadas Mamane, Kartik Chandran, Martin Jekel, Haim Cikurel , et al. · 2019

Tertiary wastewater treatment could provide a reliable source of water for reuse. Amongst these types of wastewater treatment, deep-bed filtration of secondary effluents can effectively remove particles and organic matter; however, NH4+ an…

Bioaugmented methanol production using ammonia oxidizing bacteria in a continuous flow process Open

Yu-Chen Su, Sandeep Sathyamoorthy, Kartik Chandran · 2019

Metatranscriptomic Investigation of Adaptation in NO and N2O Production From a Lab-Scale Nitrification Process Upon Repeated Exposure to Anoxic–Aerobic Cycling Open

Ariane Coelho Brotto, Medini K. Annavajhala, Kartik Chandran · 2018

The molecular mechanisms of microbial adaptation to repeated anoxic–aerobic cycling were investigated by integrating whole community gene expression (metatranscriptomics) and physiological responses, including the production of nitric (NO)…

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