Since most anion exchange resins have a higher selectivity for sulfate than nitrate, the level of sulfate in the water is an important factor in the efficiency of an ion exchange system for removing nitrates. All of the methods described here for the removal of nitrate are relatively expensive.
Simpson was found guilty in 2008 in a Nevada robbery and kidnapping case and was sentenced to 33 years in prison. He is eligible for parole in October 2017. Simpson is currently serving his sentence at Lovelock Correctional Center in Nevada. Four other men involved in the case were given probation.
The former football great has been fighting for a new trial of the armed robbery and kidnapping case that landed him in prison years after he famously escaped a conviction. Heâs serving up to 33 years for leading a group of men who attacked two sports memorabilia dealers at gunpoint at a Las Vegas hotel in 2007. Simpson maintains he was only trying to retrieve personal items he believes were his and stolen. Simpson, who is eligible for parole in 2017, filed a new appeal just last week.