Treatment of Electroplating Industry Effluent Using Maize Cob Carbon

Bio-Separation of Toxic Arsenate Ions from Dilute Solutions by Native and Pretreated Biomass of Aspergillus fumigatus in Batch and Column Mode: Effect of Biomass Pretreatment

“…As(V) uptake increased with increase in contact time but remained constant after an equilibrium time for all the adsorbents studied. Similar results have been reported for the removal of arsenic and some metal ions (Senthilkumar 1998;Selvakumari et al 2002;Murugesan 2002). Equilibrium time varied with initial As(V) concentration and different adsorbent for As(V) removal.…”

“…The maximum equilibrium time of respective adsorbent was considered for further studies, which was 170 min for live, autoclaved, alkali treated, formaldehyde treated, FeCl 3 treated and FeSO 4 treated adsorbent and 165 min for acid treated adsorbent. The equilibrium time required by the adsorbent to remove As(V) is very less when compared to other reported adsorbents (Selvakumari et al 2002). This result is interesting because equilibrium time is one of the important considerations for economical water and wastewater treatment applications (Sathishkumar et al 2004).…”

Biosorption optimization of nickel removal from water using Punica granatum peel waste

“…An adsorption capacity of ca. 52 mg g −1 was observed for nickel on pomegranate peel adsorbent at 25 • C. Adsorption capacities from the present study were compared with other adsorbents from previous studies [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] and are shown in Table 2. It is evident that the prepared adsorbent shows comparable adsorption efficacy for nickel removal from water.…”

Sorptive removal and recovery of nickel(II) from an actual effluent of electroplating industry: Comparison between Escherichia coli biosorbent and Amberlite ion exchange resin

“…Vijayaraghavan et al [21] reported an equilibrium time of around 200 min by polysulfoneimmobilized waste biomass of Corynebacterium glutamicum for nickel(II) removal from aqueous solutions, which is almost 10 times more than our result. Similarly, equilibrium was attained after 105 min in the use of carbonized maize cob and Aspergillus japonicus biomass for the removal of nickel(II) ions from electroplating industry effluent [2,36].…”

“…Among these pollutants, metals are particularly harmful due to their non-biodegradable nature, toxicity and cost. Nickel use is widespread with industrial processes such as electroplating, plastics manufacturing, nickel-cadmium batteries, fertilizers, pigments, mining and metallurgical, porcelain enameling, copper sulfate manufacture and steam-electric power plants being the major contributors of nickel to the environment [1,2]. Nickel is reported as a potent carcinogen leading to cancer in the lungs, nose, stomach and bone [3].…”