title: Studies on the use of neem products for removal of ammonia from brackishwater.
abstract: Laboratory experiments were carried out to investigate the ammonia removal from brackishwater (Salinity 16 +/- 1 ppt) using natural plant products such as seed powder and seed oil from neem (Azadirachta indica) and commercially available neem products-neemazal and neemgold. The experimental results showed that ammonia removal was effective with 90 mg/l of neem oil, whereas, neem seed powder at 90 mg/l registered an increase in ammonia levels throughout the course of the experiment. Neem oil, neemazal, and neemgold at 90 mg/l were effective in decreasing the total ammonia nitrogen (TAN) level of 0.40-0.45 mg/l in 96 h. The effect of initial ammonia concentrations on the ammonia removal using neem oil revealed that percentage ammonia removal decreased with an increase in initial ammonia concentration.
authors.affiliation: Central Institute of Brackishwater Aquaculture, R. A. Puram, Chennai, India. krishnanik@hotmail.com
authors.forename: K K
authors.initials: KK
authors.lastname: Krishnani
authors.forename: B P
authors.initials: BP
authors.lastname: Gupta
authors.forename: K O
authors.initials: KO
authors.lastname: Joseph
authors.forename: M
authors.initials: M
authors.lastname: Muralidhar
authors.forename: A
authors.initials: A
authors.lastname: Nagavel
mesh_terms: D000641:Ammonia / Q000737:chemistry / Q000302:isolation & purification*; D031601:Azadirachta / Q000502:physiology*; D001673:Biodegradation, Environmental; D007700:Kinetics; D014873:Water Pollutants / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D014873:Water Pollutants; D000641:Ammonia