ANAEROBIC DIGESTION OF LANDFILL LEACHATE WITH NATURAL ZEOLITE AND SUGARCANE BAGASSE FLY ASH AS THE MICROBIAL IMMOBILIZATION MEDIA IN PACKED BED REACTOR

Hanifrahmawan Sudibyo,Chandra Wahyu Purnomo,Zata Lini Shabrina,Hartika Rafih Wondah,Wiratni Budhijanto,Retno Tri Hastuti

doi:10.14311/ap.2018.58.0057

Hanifrahmawan Sudibyo, Chandra Wahyu Purnomo + Show 4 more

Open Access

https://doi.org/10.14311/ap.2018.58.0057

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Journal: Acta Polytechnica	Publication Date: Feb 28, 2018
Citations: 7	License type: CC BY 4.0

Affiliation: ADA University, Universitas Gadjah Mada

Abstract

To enhance the digestion rate of a landfill leachate in the anaerobic packed bed reactor, a natural zeolite and sugarcane bagasse fly ash (BFA) were tested as the immobilization media. In order to scale up this process and systematically optimize the reactor performance, a kinetics model was needed. The suitability of the Contois and Haldane growth kinetic models were tested on the experiment data. It turned out that Contois gave the best fit for both acidogenic and methanogenic steps. A statistical analysis on Contois kinetic parameters using the Pearson correlation coefficient indicated that, in comparison with the BFA, the zeolite, as an immobilization media, showed more positive effects on the performance of the anaerobic digestion of a leachate.

Highlights

IntroductionThe increase of the municipal waste accumulation in conventional landfill sites has caused severe environmental impacts
The removal of an organic material represented by the COD, biochemical oxygen demand (BOD), and ammonium from the leachate is the mandatory prerequisite for discharging the leachates into water bodies [2]
According to the experimental data (Figure 2), both for the acidogenic cell (X1) and the methanogenic cell (X2), it could be seen that each growth phase ran for the same period of time when the natural zeolite and bagasse fly ash (BFA) were used as the immobilization media

Summary

Introduction

The increase of the municipal waste accumulation in conventional landfill sites has caused severe environmental impacts. In Indonesia, the high organic fraction in the municipal solid waste leads to an excessive leachate release. The leachate generated from landfill sites usually contains a high amount of organic and inorganic contaminants [1]. The organic and inorganic contaminants in the leachate were commonly characterized by the high values of chemical oxygen demand (COD), pH, ammonia nitrogen and heavy metals and strong colour and bad odour. The removal of an organic material represented by the COD, biochemical oxygen demand (BOD), and ammonium from the leachate is the mandatory prerequisite for discharging the leachates into water bodies [2]

Methods

Results

Conclusion