A highly selective polymeric ligand exchanger was developed for the removal of trace As(V) from aqueous solution. This adsorbent was prepared by loading Fe(III) onto porous amidoximated polyacrynitrile (AN)/itaconic acid (IA) copolymers (Fe(III)-AO AN/IA). Negligible ferric ion dissolution was observed from Fe(III)-AO AN/IA in solution of acidic pHs up to 2. As(V) adsorption by Fe(III)-AO AN/IA is a pH-dependent process with maximum capacity of 1.32 mg/g at pH 2–3. The adsorption process was found to be governed by pseudo-second-order kinetics, and could be described by the Freundlich model. Fe(III)-AO AN/IA had higher adsorption selectivity for As(V) than other anions in a simulated groundwater body such as Cl−, SO42−, PO43−, SiO32−. Fixed-bed adsorption indicated that As(V) in simulated groundwater could be effectively captured from 400 μg/L to <10 μg/L within 190 bed volumes (BV). The As(V) adsorbed on Fe(III)-AO AN/IA could be efficiently eluted with 10 BV of 5% NaCl solution (at pH = 9.0).
Removing Inorganic Contaminants with Arsenic Water Treatment
Inorganic contaminants in drinking water are more than just an annoyance. Arsenic is a naturally occurring carcinogen, which is known to lead to both cancer and heart failure. Arsenic is also a difficult contaminant to detect. Since arsenic is both odorless and colorless, testing has to be conducted in order to reliably identify it. Arsenic often appears in conjunction with iron and manganese. Manganese can cause discoloration, such as brown or black stains on clothing. In sufficient concentrations, it can also...
Extensive Solutions for Removing Arsenic from Your Drinking Water
You may not be aware that your water supply has unsafe levels of arsenic in it. If testing proves this to be the case, you must immediately find a form of arsenic water treatment to help you have access to clean drinking water again. Arsenic is a poisonous substance that has innumerable negative health effects on humans. There are several methods of performing arsenic removal from drinking water. Here are some of the most extensive solutions on the market. Oxidation Oxidation technologies, using natural air or...
How to Treat Water and Remove Arsenic
Arsenic is a naturally occurring element from the earth’s crust. Around the world, many countries have groundwater that is steeped in arsenic. Until recently, governments haven’t realized just how bad arsenic was for people, even in minute concentrations. In 2001, the US Environmental Protection Agency felt it necessary to lower the drinking water arsenic standard from 50 parts per billion to 10 parts per billion (ppb) after scientists presented evidence that low levels still correlated with cancer...
How to Deal with Arsenic in Drinking Water
Thanks to recent developments in technology, daily drinking water undergoes a rigorous treatment process for water to be consumable. This is because most ground and natural river waters have a chemical in them called arsenic. Arsenic is a metallic chemical element that is found commonly among rocks and sulfur in the Earth’s crust. Arsenic is known for getting into your drinking water from natural deposits or runoff due to agricultural, mining, and industrial activities. If you own a water well or live by a...
How Arsenic Biological Filtration Systems Can Improve Your Life
Water is the foundation of human existence. It’s used for cooking, bathing, cleaning, and most importantly, drinking. Unfortunately, water is often dirty and contaminated, especially when it’s pulled from groundwater sources and wells. Since many cities have been shown to have low-grade drinking water, concern has increased about water quality. Many people are wondering if their water is safe to use and drink. Some may even be wondering if there’s anything they can do. Thankfully, there is....