Track topics on Twitter Track topics that are important to you
A hybrid algal photosynthesis and ion exchange (HAPIX) process was developed that uses natural zeolite (chabazite) and wild type algae to treat high ammonium (NH) strength wastewater. In the HAPIX process, NH is temporarily adsorbed from the liquid, which reduces the free ammonia (FA) concentration below the inhibitory level for algal growth. The slow release of adsorbed NH subsequently supports the continuous growth of algae. In this study, a HAPIX reactor reduced NH-N concentrations in centrate from an anaerobic digester from 1180 mg L to below 10 mg L without dilution. Chabazite doses of 60 g L produced more algal biomass, with higher protein and starch contents, than doses of 150 g L and 250 g L. Approximately 67-70% of fatty acids in the algal biomass harvested from HAPIX reactors were unsaturated. A mathematical framework that couples a homogeneous surface diffusion model with a co-limitation algal kinetic growth model reasonably predicted the algal biomass production and NH-N concentrations in the HAPIX reactors. The HAPIX process has the potential to serve a two-fold purpose of high NH-N strength wastewater treatment and agricultural or commercial biopolymer production.
This article was published in the following journal.
Name: Water research
According to the European Water Framework Directive (WFD), chemical water quality is assessed by monitoring 45 priority substances. However, observed toxic effects can often not be attributed to these...
The synergistic activity of algae and prokaryotic microorganisms can be used to improve the efficiency of biological wastewater treatment, particularly with regards to nitrogen removal. For example, a...
Concentrating on the ion conductivity of anion exchange membranes (AEMs), we present a magnetic-field-oriented strategy to address the insufficient ion conductivity and the lifetime problem of AEMs us...
In this study, the optimum ammonium removal by activation of synthetic zeolite in the aqueous phase was investigated by batch ion exchange adsorption assay, and its surface changes due to activation m...
Switching the dominance from algae to macrophytes is crucial for lake management to human-induced eutrophication. Nutrients from algal sources can be utilized in the process of transition from algal b...
This study is a pooled statistical analysis of the data from 2 studies concerning efficacy of ammonium-succinate based dietary supplement. In both studies group 1 took the ammonium-succina...
The aim of this project is to evaluate a hybrid emotion-focused treatment protocol, specifically developed for individuals who suffer from co-occurring chronic pain and clinical levels of ...
The purpose of the study is to demonstrate that the SynergEyes SA Hybrid Contact Lens clinical performance is substantially equivalent to that of the SynergEyes A Hybrid Lens when studied:...
The investigators want to compare the efficacy of plasma exchange treatment with using two different citrates ( 4% and 15% ) as anticoagulants in plasma exchange treatment. The efficacy o...
The purpose of this study to evaluate and examine, weather use of Hybrid Argon Plasma Coagulation (APC) as adjunct to endoscopic mucosal resection (EMR) will reduce the risk of residual or...
High molecular weight, insoluble polymers which contain functional groups that are capable of undergoing exchange reactions (ION EXCHANGE) with either cations or anions.
Screening techniques first developed in yeast to identify genes encoding interacting proteins. Variations are used to evaluate interplay between proteins and other molecules. Two-hybrid techniques refer to analysis for protein-protein interactions, one-hybrid for DNA-protein interactions, three-hybrid interactions for RNA-protein interactions or ligand-based interactions. Reverse n-hybrid techniques refer to analysis for mutations or other small molecules that dissociate known interactions.
High molecular weight insoluble polymers which contain functional anionic groups that are capable of undergoing exchange reactions with cations.
High-molecular-weight insoluble polymers that contain functional cationic groups capable of undergoing exchange reactions with anions.
Inorganic compounds that include a positively charged tetrahedral nitrogen (ammonium ion) as part of their structure. This class of compounds includes a broad variety of simple ammonium salts and derivatives.
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...