Adane Sewhunegn Molla

Mr. Adane Sewhunegn Molla

orcid

Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 December 2021 in Journal of Environmental Management
Verified
Journal Article
Closed access
Adane Sewhunegn MollaAdane Sewhunegn Molla
Adane Sewhunegn Molla
Patrick TangPatrick Tang
Patrick Tang
WSWilly Sher
Willy Sher
DBDawit Bekele
Dawit Bekele

2 May 2025 in Toxics
Verified
Journal Article
Open access
PDF file
Adane Sewhunegn MollaAdane Sewhunegn Molla
Adane Sewhunegn Molla
Patrick TangPatrick Tang
Patrick Tang
WSWilly Sher
Willy Sher
MBMd Mezbaul Bahar
Md Mezbaul Bahar
DBDawit Bekele
Dawit Bekele
The rapid increase in construction and demolition waste (C&DW) has emerged as a significant environmental challenge, particularly due to the hazardous substances embodied within the fine residues destined into landfills. The disposal of C&DW in landfills has been widely recognized as a source of leachate, containing toxic contaminants, which pose significant environmental risks. A controlled column leaching experiment was conducted using samples with varying proportions of C&DW, gypsum, and organic content to assess their impact on leachate chemistry. The results indicate that higher C&DW content leads to increased concentrations of heavy metals, such as Pb, Hg, As, Cr, Ni, Cu, Zn, and Co, as well as other metals like Al and Fe, with peak contamination occurring within the first 13–15 weeks. Gypsum presence exacerbates heavy metal solubility by reducing pH, increasing sulfate levels, and promoting metal-sulfate complex formation. Despite remaining within regulatory thresholds, the cumulative concentration of toxic metals over time highlights potential environmental risks, particularly in landfill settings. This study underscores the need for improved C&DW management practices, enhanced waste segregation, and sustainable alternatives to gypsum to mitigate long-term ecological impacts. These findings contribute to a deeper understanding of C&DW leachate dynamics and inform policy recommendations for sustainable waste management in the construction sector.

16 February 2024
Verified
Book Chapter
Closed access
Adane Sewhunegn MollaAdane Sewhunegn Molla
Adane Sewhunegn Molla
WSWilly Sher
Willy Sher
WTWaiching Tang
Waiching Tang
MBMezbaul Bahar
Mezbaul Bahar
DBDawit Nega Bekele
Dawit Nega Bekele

17 October 2016
Verified
Journal Article
Closed access
EMEmbialle Mengistie
Embialle Mengistie
EAEsayas Alemayehu
Esayas Alemayehu
Adane Sewhunegn MollaAdane Sewhunegn Molla
Adane Sewhunegn Molla
ABAbebe Beyene
Abebe Beyene

28 June 2015 in Management Studies
Verified
Journal Article
Open access
POPeter Owusu-Antwi
Peter Owusu-Antwi
RBRichard Buamah
Richard Buamah
HEHelen Essandoh
Helen Essandoh
Adane Sewhunegn MollaAdane Sewhunegn Molla
Adane Sewhunegn Molla
EAEsi Awuah
Esi Awuah
KAKweku Akuam Anno
Kweku Akuam Anno