Ammonia removal from giant fresh water prawn farm by using zeolite from oil palm ash

Rewadee Anuwattana,Pattamaphorn Phungngamphan,Narumon Soparatana,Patthanant Natpinit,Worapong Pattayawan,Supinya Yindee,C Hamontree

doi:10.1051/matecconf/201819203028

Rewadee Anuwattana, Pattamaphorn Phungngamphan + Show 5 more

Open Access

https://doi.org/10.1051/matecconf/201819203028

Copy DOI

Abstract

The Empty Fruit Bunch (EFB) and Mesocarp fiber ash (FB) was obtained from the boiler at NAM HONG Palm Oil Company Limited, Thailand. The optimum condition was used in Na-A zeolite synthesis from oil palm ash. The obtain produce was Na12Al12Si12O48· 27H2O. The sample was dried in hot air oven. The calcium exchange capacity (CEC) of 386.39 mg CaCO3/g of product, and the 86.05% of pure Na-A zeolite phase was formed. In batch experimental study, the synthetic wastewater was prepared. In order to find out the optimal zeolite dosage was added into 10 mg/L of total ammonium nitrogen solution. The results of unionized ammonia (NH3) removal efficiency indicated that zeolite A standard and zeolite from oil palm ash are better than commercial zeolite. The optimum dosage of 0.2, 0.25 and 0.2 g of zeolite A standard, zeolite from oil palm ash and commercial zeolite, respectively. The NH3 removal capacity from giant freshwater prawn farm, zeolite A standard is better than zeolite from oil palm ash and commercial zeolite, respectively. In the large volume of synthetic wastewater (1000 mL), the zeolite from oil palm ash is the best ammonia removal capacity when compared with zeolite A standard and commercial zeolite.

Highlights

Palm oil has been the leading vegetable oil in term of consumption and production
We introduced mesocarp and empty fruit bunch ashes as a raw material to prepare Na-A zeolite and used as an adsorbent to removal unionized ammonia (NH3) from synthetic wastewater and giant fresh water prawn feeding wastewater, respectively
The results indicated that NH3 removal capacity depended on cation exchange capacity value (CEC) because of the calcium exchange capacity (CEC) value is representative as the amount of positive charge which can be exchanged

Summary

Introduction

Palm oil has been the leading vegetable oil in term of consumption and production. Approximately 4.5 million Rai of the total area planted with oil palm in the southern Provinces of Thailand is concentrated. [1] In Thailand, more than 100,000 families of farmers was involved in oil palm cultivation and achieve annual FFB yield transported to the crude palm oil industry. The extraction of 200 kg of crude palm oil from fresh fruit bunch are based on the processing of 1,000 kg of EFB. The pressed EFB can be used as fuel and mesocrap in the boiler. [3] The ash of biomass is a mixture of 50-60 of SiO2 and 2-4% of Al2O3 which is the alumino silicate compound. The heating value of EFB and mesocrap are about of 3,700 and 4,420 Kcal/kg of dry fuel, respectively. Another option for reuse of ash is silica gel and silicon carbide. Zeolite are crystalline aluminum silicate which a framework of SiO4 and AlO4 tetrahedral linked to each other at the corner via sharing their oxygen atom. The structure of three-dimensional network is made up by tetrahedral and the negatively charged lattice accounting for the substitution of Si by Al define many special properties of zeolite, such as adsorption at molecule in huge internal channels. [4] These zeolite materials are used as adsorbents for the removal of NH4+ ion [5] and different heavy metal ions from wastewater

Methods

Results

Conclusion