Removal of Cu and Zn from swine raising wastewater using organic filters

Abstract

Rice husks, coffee bean skins, sugar cane bagasse, maize cobs, saw dust and fine charcoal dust were evaluated as filters for the removal of heavy metals (Cu and Zn) from the waste water of swine raising installations. The specific mass, pH and the sum of bases and removable acids were determined to characterize each of the filter materials. Each filtering material was placed in a 100 mm diameter, 600 mm long, PVC column to a height of 500 mm under 12,500 N m(-2) of compression. Chemical and physical analyses were determined on effluent samples collected for each 1.5 l up to a total of 15 l. The organic materials reduced the concentration of sediment solids (> 90%), total solids (up to 33%) and Cu (up to 43.6%) of the inffluent but had little or no effect on Zn concentration.

Modification of rice hull and sawdust sorptive characteristics for remove heavy metals from synthetic solutions and wastewater

“…Other studies showed the capacity of the metal ions to bind onto organic sorbents (sawdust, rice husk, etc.) was 96% for Cd 2+ , 98% for Pb 2+ and 43.6% for Cu 2+ [7,8].…”

“…de Matos et al [8] used columns of organic filter for removal of Cu(II) and Zn(II) from waste water. Each filtering material was placed in a 100 mm diameter, 600 mm long, PVC column to a height of 500 mm under 12500 N m −2 of compression.…”

“…Biosorbents are prepared from naturally abundant and/or waste biomass [1]. In recent many reports using low cost agricultural by-products, such as peanut and hazelnut shells, pine bark, rice straw, rice hull, rice bran, soybean and cotton seed hulls, wool, sawdust, etc., instead of ion-exchange resins have been documented [2][3][4][5][6][7][8][9][10]. These materials have naturally adsorption capacities for heavy metals.…”

Sugarcane Under Pressure: An Overview of Biochemical and Physiological Studies of Abiotic Stress

“…These results have shown that sugarcane is a crop that is able to grow in areas contaminated with metals (SeguraMunoz et al 2006). Extra findings revealed that the cane residue or bagasse can also be used to remove Cu and Zn from the wastewater of electroplating industries (Sousa et al 2009) and swine raising installations (De Matos et al 2003).…”

Sugarcane bagasse performance in copper adsorption of pot still cachaça

“…Typically, these materials are considered as agro-industrial residues, representing an environmental problem (Albertini et al, 2007). Sugarcane bagasse has been used as adsorbent material for the recovery of wastewater contaminated with heavy metals, such as in cadmium, nickel, copper and zinc adsorption in wastewater from agribusiness and mining and metallurgical industries (De Matos et al, 2003;Grupta et al, 2003;Grupta & Ali, 2004). This material is an agricultural residue obtained in large quantities in Brazil, consisting of four fractions, namely: 45% fiber, 2-3% insoluble solids, 2-3% soluble solids and 50% water.…”