Factorial design and optimization of landfill leachate treatment using tannin-based natural coagulant

Tawfiq J.H. Banch, Marlia Mohd Hanafiah, Abbas F.M. Alkarkhi, Salem S.Abu Amr

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this study, tannin-based natural coagulant was used to treat stabilized landfill leachate. Tannin modified with amino group was utilized for the treatment process. Central composite design (CCD) was used to investigate and optimize the effect of tannin dosage and pH on four responses. The treatment efficiency was evaluated based on the removal of four selected (responses) parameters; namely, chemical oxygen demand (COD), color, NH3-N and total suspended solids (TSS). The optimum removal efficiency for COD, TSS, NH3-N and color was obtained using a tannin dosage of 0.73 g at a pH of 6. Moreover, the removal efficiency for selected heavy metals from leachate; namely, iron (Fe2+), zinc (Zn2+), copper (Cu2+), chromium (Cr2+), cadmium (Cd2+), lead (Pb2+), arsenic (As3+), and cobalt (Co2+) was also investigated. The results for removal efficiency for COD, TSS, NH3-N, and color were 53.50%, 60.26%, and 91.39%, respectively. The removal of selected heavy metals from leachate for Fe2+, Zn2+, Cu2+, Cr2+, Cd2+, Pb2+, As3+ and cobalt Co2+ were 89.76%, 94.61%, 94.15%, 89.94%, 17.26%, 93.78%, 86.43% and 84.19%, respectively. The results demonstrate that tannin-based natural coagulant could effectively remove organic compounds and heavy metals from stabilized landfill leachate.

Original languageEnglish
Article number1349
JournalPolymers
Volume11
Issue number8
DOIs
Publication statusPublished - 1 Aug 2019

Fingerprint

Chemical Water Pollutants
Leachate treatment
Tannins
Coagulants
Land fill
Chemical oxygen demand
Heavy Metals
Heavy metals
Cobalt
Color
Arsenic
Chromium
Cadmium
Organic compounds
Zinc
Copper
Iron
Composite materials

Keywords

  • Coagulation
  • Heavy metals
  • Landfill
  • Leachate treatment
  • Removal efficiency
  • Tannin

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics

Cite this

Factorial design and optimization of landfill leachate treatment using tannin-based natural coagulant. / Banch, Tawfiq J.H.; Mohd Hanafiah, Marlia; Alkarkhi, Abbas F.M.; Amr, Salem S.Abu.

In: Polymers, Vol. 11, No. 8, 1349, 01.08.2019.

Research output: Contribution to journalArticle

Banch, Tawfiq J.H. ; Mohd Hanafiah, Marlia ; Alkarkhi, Abbas F.M. ; Amr, Salem S.Abu. / Factorial design and optimization of landfill leachate treatment using tannin-based natural coagulant. In: Polymers. 2019 ; Vol. 11, No. 8.
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