Metal contamination in the environment is a persisting global issue. The metal reservoirs in the earth have declined due to society’s needs and due to uncontrolled mining activities. Therefore, the idea to recover metals from waste streams has emerged.
In this thesis, cost competitive technologies such as adsorption using agro-wastes and precipitation using an inverse fluidized bed (IFB) reactor were investigated, with special emphasis on the recovery of base metals. Groundnut shell showed good potential for metal (Cu, Pb and Zn) removal. From artificial neural network modeling, the performance of the sulfate reducing bacteria (SRB) was found to be strongly pH dependent; the removal efficiency of Cu and Zn in the IFB at pH 5.0 was >97%. Electronic waste is a good candidate as secondary metal resource. The recovery of Cu from computer printed circuited boards (PCBs) using biogenic sulfide precipitation was investigated as well. Using this technology, Cu could be recovered at ~0.48 g Cu/g PCBs.
Betala smidigt med kort, Klarna, Apple Pay eller Google Pay. Är du inte nöjd har du alltid 14 dagars ångerrätt. Läs mer i våra villkor. Har du några frågor, mejla oss på hello@memmo.org.
Memmo gör det enklare att plugga – var du än är i världen. Hos oss samlar du kursböcker och smarta studieverktyg på ett och samma ställe: sammanfattningar, quiz, poddar och flashcards. Och så Ted, din studiekompis som svarar på allt du undrar. Över 50 000 studenter pluggar redan här – byggt för att du ska lära dig snabbare och stressa mindre.