Ammoniacal Nitrogen Removal Using flamboyant pods (Delonix Regia) Adsorbent for Natural Rubber Wastewater Treatment

Abstract

Plant waste such as Delonix Regia Pods (DRP) have the potential to be used as adsorbents. A study of lignocellulose delonix regia pods was carried to assess ammoniacal nitrogen removal from natural rubber wastewater. Sample wastewater was taken from the rubber processing industry and characterization was carried out. Outcomes from the analysis shows that the ammoniacal nitrogen concentration was 66 mg/L and higher than the recommended wastewater discharge standards. Batch experiments were conducted on the effect of dose, pH, shaking speed and contact time parameters for optimum condition. The results revealed that the optimal dosage, pH, shaking speed and contact time is 4.5 g, pH 8, 150 rpm and 120 minutes with ammoniacal nitrogen removal efficiency of 74.3 % and the adsorption capacity of 1.22 mg/g. Pseudo second order kinetic model was found to fit the data better and the R 2 obtained was 0.9992. From the study, it can be concluded that the media can be used for the removal of ammoniacal nitrogen in natural rubber wastewater and subsequently reduce environmental pollution. Hence, it can be sustainable and environmentally friendly.

Comparison of Different Volume Reactor for Batik Wastewater Pre-Treatment with Ozonation to Improve Biodegradability

“…The highest efficiency value occurs at an altitude of 50 cm of 30.9%. Another alternative treatment is adsorption with wastepaper sludge, empty fruit bunch fibre, and flamboyant pods (Delonix Regia) that can reduce NH3-N of 49.3%, 79.5% and 74.3 %, respectively (Daud et al, 2018a;Nasir et al, 2018, Daud et al, 2018b 12.9 9.3 *50 cm, 100 cm, 150 cm measured from the bottom up A larger reactor volume will result in a smaller total reduction of phenol due to the larger volume capacity of wastewater. In the biological treatment, high ammonia (NH3-N) tend to be toxic for the bacteria and biological wastewater treatment (Yuzer et al,2012).…”

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“…Lots of precursors are used for obtaining sufficient activated carbon from waste biomass like Acacia species, paddy straws, coconut, bamboo, bagasse, fruit shell, fruit skins, etc. [5]. The use of waste biomass for ACs sources is advantageous as it is cheaper, abundant, and non-toxic [6].…”