Abstract
Lead (Pb) is known as toxic element in environment. It is produced from processing of Agar Flour industry activities. Enhancement of Pb in the waste water of agar flour is very dangerous for human health. Effect of lead damage some organ e.g. kidney, liver, and hair. Environment standard of lead concentration on waste water based on Governor of East Java Regulation No. 72 of 2013 is 1 mg.L -1 , otherwise, initial lead levels of waste water are 3.114 mg.L -1 . The aim of the research is reducing the level of lead to be harmless for the environment. One method to decrease a high concentration of lead in waste water is biosorption. Consortia of Bacillus alvei and Bacillus pumilus as indigenous bacteria are used to decrease Pb level in the wastewater. The experiment was carried out with varies of wastewater concentration and bacteria 3 %, 4%, 5%, 6%, and 7%. Consortium of B. alvei dan B. pumilus at 7 % concentration have the highest potency 93.58 % to reduce lead reach 0.2 mg.L -1 . Keywords: Bacteria, Consortia, Concentration, Pb, Waste of Agar Flour
Highlights
Industry development in Indonesia has negative impact on ecosystem
Method used for this problem is using bacteria as a bioremediation agent to reduce hazardous metals concentration such as Pb in the waste water
Capability of indigenous bacteria to reduce the toxic effect of Pb could be effectively used in environmental biotechnology
Summary
Industry development in Indonesia has negative impact on ecosystem. The Effects were characterized by pollution. Pollution came from pollutants [1], such as hazardous industrial waste water which badly manage. It is found at agar flour industrial waste water in Malang city. This pollution cause many problems in environment. Problems occured bacause heavy metal (Pb) found in the waste of agar flour industry. These lead (Pb) is truly toxic, non biodegradable, potentially pollute the environment [2,3]. To control environmental pollution by Pb, it is necessa-ry to restrict maximum content of Pb in the waste water that discharged into the environment. Pb levels in the waste water of agar flour industrial are 3.114 mg.L-1 which too high compared to the standard quality 1 mg.L-1 according Governor of East Java Regulation No 72 of 2013
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