Next Article in Journal
“Sustainable Packaging Logistics”. The link between Sustainability and Competitiveness in Supply Chains
Previous Article in Journal
Green Growth—Magic Bullet or Damp Squib?
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle
Sustainability 2017, 9(7), 1062; doi:10.3390/su9071062

Biological Treatment of Fish Processing Saline Wastewater for Reuse as Liquid Fertilizer

Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
*
Authors to whom correspondence should be addressed.
Received: 19 April 2017 / Revised: 13 June 2017 / Accepted: 14 June 2017 / Published: 24 June 2017
View Full-Text   |   Download PDF [8473 KB, uploaded 24 June 2017]   |  

Abstract

The fish processing sector contributes serious organic pollution loads and high salinity to receiving waters. This research aimed to study the effect of salt (NaCl) concentration on the treatment efficiency of fish processing wastewater in a continuous flow system by natural biodegradation. This research also focused on the use of a laboratory-scale bioreactor, which is operated in an aerobic continuous flow system with a 5-day cycle treatment of three different concentrations of diluted fish processing wastewater (30-, 50-, and 100-fold) with salt concentrations varying from 0% to 7% w/v NaCl. The evaluation of system performance at nine different operating hydraulic retention times (HRT) that range from 2–10 days indicated that the substrate removal rates increase with the increase in HRT along with the increasing wastewater concentration. The optimum biomass yield was found at the 8-day HRT, and the highest substrate removal was obtained at 10-day HRT. The study on 11 different salt contents in wastewater at the optimal HRTs of 10, nine, and eight days showed the existence of inhibition effects on biomass growth and substrate removal from 3.0% salt concentration. The treated wastewater without offensive odor is feasible for its reutilization as an environmental friendly liquid fertilizer. View Full-Text
Keywords: fish processing wastewater; salt (NaCl) concentration; continuous flow system; biomass yield; substrate removal; liquid fertilizer fish processing wastewater; salt (NaCl) concentration; continuous flow system; biomass yield; substrate removal; liquid fertilizer
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Ching, Y.C.; Redzwan, G. Biological Treatment of Fish Processing Saline Wastewater for Reuse as Liquid Fertilizer. Sustainability 2017, 9, 1062.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sustainability EISSN 2071-1050 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top