Evaluation of slow pyrolyzedwood and rice husks biochar for adsorption of ammonium nitrogen from piggery manure anaerobic digestate slurry

Simple item page
dc.contributor.authorKizito, Simon
dc.contributor.authorWu, Shubiao
dc.contributor.authorKirui, W. Kipkemoi
dc.contributor.authorLei, Ming
dc.contributor.authorLua, Qimin
dc.contributor.authorBaha, Hamidou
dc.contributor.authorDonga, Renjie
dc.date.accessioned2022-05-26T15:15:35Z
dc.date.available2022-05-26T15:15:35Z
dc.date.issued2015
dc.description.abstractDue to its high adsorption capacity, the use of biochar to capture excess nutrients fromwastewater has become a central focus in environmental remediation studies. In this study, its potential use in adsorption and removal of ammonium in piggery manure anaerobic digestate slurry was investigated. The adsorbed amount of NH4 +-N (mg·g−1) and removal percentage as a function of adsorbent mass in solution, adsorbent particle size, NH4 +-N concentration in the effluent, contact time, pHand temperaturewere quantified in batch equilibriumand kinetics experiments. The maximum NH4 +-N adsorption from slurry at 1400 mg N·L−1 was 44.64 ± 0.602 mg·g−1 and 39.8 ± 0.54 mg·g−1 for wood and rice husk biochar, respectively. For both biochars, adsorption increased with increase in contact time, temperature, pH and NH4 +-N concentration but it decreased with increase in biochar particle size. Furthermore, the sorption process was endothermic and followed Langmuir (R2 = 0.995 and 0.998) and Pseudo-second order kinetic models (R2 = 0.998 and 0.999). Based on the removal amounts, we concluded that rice husk and wood biochar have potential to adsorb NH4 +-N from piggery manure anaerobic digestate slurry, and thus can be used as nutrient filters prior to discharge into water streams.en_US
dc.identifier.citationKizito, S., Wu, S., Kirui, W. K., Lei, M., Lu, Q., Bah, H., & Dong, R. (2015). Evaluation of slow pyrolyzed wood and rice husks biochar for adsorption of ammonium nitrogen from piggery manure anaerobic digestate slurry. Science of the Total Environment, 505, 102-112. http://dx.doi.org/10.1016/j.scitotenv.2014.09.096en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.scitotenv.2014.09.096
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/3488
dc.language.isoenen_US
dc.publisherScience of the Total Environment,en_US
dc.subjectBiocharen_US
dc.subjectPiggery manure anaerobic digestateen_US
dc.subjectAmmonium adsorptionen_US
dc.subjectKineticsen_US
dc.subjectThermodynamicsen_US
dc.titleEvaluation of slow pyrolyzedwood and rice husks biochar for adsorption of ammonium nitrogen from piggery manure anaerobic digestate slurryen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Evaluation of slow pyrolyzed wood and rice husks biochar for adsorption.pdf
Size:
911.95 KB
Format:
Adobe Portable Document Format
Description:
Article
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Agricultural and Veterinary Sciences