Utilization of Rice Bran as Cadmium Biosorbent

Sulistiawan Faris, Bahari Fajar, Setiadi Tjandra, Satya Awalina

Abstract

The main issue of industrial sector is unprocessed wastewater that dumped in the common water. One of the toxic metals contained in the waste water is cadmium. Some of Indonesia water has polluted with cadmium waste; such as Jakarta’s bay which contains 0,47 mg/L, Ketiwon river creek in Tegal contains 0,099-0,134 mg/L, and the rice field area of West Java and Central Java contains 0,619 mg/L. This has exceeded the standard of 0,05-0,1 mg/L according to Ministry Regulation LH No. 05/2014. This contamination has caused bioaccumulation, itai-itai disease, kidney failure, and liver failure. Rice bran is an agricultural waste which abundances in Indonesia. Wastewater treatment with rice bran (biosorption) is an alternative treatment which is affordable than conventional method based on availability of its resource. A research before has proved that rice bran has a high number of nickel adsorption capacity about 140 mg/L. In this paper, it is focused on observing the rice bran’s performance in adsorbing cadmium continuously. Functional group on rice bran has given the high adsorption ability. Therefore, rice bran could be used not only limited for cadmium, but also for other metal waste. For wastewater treatment in industrial scale, the needs of cheaper treatment, easy to use, and reusable are very important. All these needs are represented by biosorption process as a realization of sustainable development.

Keywords— Biosorption;Cadmium; Capacity ;Rice Bran 

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