Research Article
The Role of Silica Gel in Purification of Agricultural and Industrial Wastes Containing Rosaniline Hydrochloride
Mausul Umar*
,
Abdurrahman Abubakar,
Amina Doho,
Yusuf Abdulhamid
Issue:
Volume 11, Issue 1, March 2026
Pages:
1-15
Received:
14 October 2025
Accepted:
7 November 2025
Published:
23 January 2026
Abstract: The discharge of synthetic dyes into aquatic systems poses serious environmental and public health concerns due to their toxicity, persistence, and resistance to biodegradation. Rosaniline hydrochloride, a cationic triarylmethane dye, is widely used in textiles, leather tanning, and biological laboratories, yet its removal from wastewater remains a major challenge. This study investigated the application of silica gel as an adsorbent for the removal of rosaniline hydrochloride from aqueous solutions under controlled laboratory conditions. A stock solution of 500 mg/L was prepared, and working solutions of varying concentrations were obtained through serial dilution. Batch adsorption experiments were carried out to examine the effect of key operational parameters, including contact time (30-90 min), adsorbent dosage (2-4 g), initial concentration (20-100 mg/L), and temperature (25-80°C). The percentage removal efficiency and adsorption capacity were determined using a UV-Visible spectrophotometer. The results revealed that adsorption efficiency increased with higher contact time and adsorbent dosage, while removal decreased at higher dye concentrations due to surface saturation. Temperature was found to enhance adsorption, with maximum removal efficiency observed at elevated temperatures. These findings demonstrate that silica gel is an effective and low-cost adsorbent for the removal of rosaniline hydrochloride, with potential applicability in small-scale and decentralized wastewater treatment systems.
Abstract: The discharge of synthetic dyes into aquatic systems poses serious environmental and public health concerns due to their toxicity, persistence, and resistance to biodegradation. Rosaniline hydrochloride, a cationic triarylmethane dye, is widely used in textiles, leather tanning, and biological laboratories, yet its removal from wastewater remains a...
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Research Article
Determinants of Industry 4.0 in Polytechnic College in Addis Ababa
Ahmed Gashaw Yimam*,
Biadgelign Ademe
Issue:
Volume 11, Issue 1, March 2026
Pages:
16-23
Received:
16 June 2026
Accepted:
1 July 2026
Published:
22 July 2026
DOI:
10.11648/j.ijimse.20261101.12
Downloads:
Views:
Abstract: This research explores the main drivers of Industry 4.0 (I4.0) adoption inside government-owned polytechnic institutions in Addis Ababa, Ethiopia, focusing on the interplay between technology infrastructure, human capital, and governance. This study's main goal is to examine how these institutional factors affect colleges' capacity to match their vocational training output to the changing digital needs of the regional manufacturing industry. Even with governmental initiatives like "Digital Ethiopia 2030," there is still a big disconnect between industry demands and institutional preparedness, leading to a "vocational paradox" that impedes economic growth. The study uses the Dynamic Capabilities Theory (DCT) as a theoretical framework to address this, quantitative survey data from 184 practitioners. In order to ascertain how organizations manage swift technological disruption, the technique places a strong emphasis on an objective examination of organizational capacities, particularly sensing, seizing, and changing. The results show that although Industry 4.0 is well known, institutions are severely limited by a "technological maturity gap," which is typified by acute shortages of specialized hardware, such as IoT and 3D printing equipment. Institutional factors account for 54.3% of the variation in curriculum-industry alignment, according to regression analysis. In particular, Governance Frameworks was shown to be the main systemic lever (β =.438), followed by Digital Leadership (β =.192) and Technological Infrastructure (β =.268). As a result, the study comes to the conclusion that a structural change toward decentralized governance and updated infrastructure is necessary for a successful digital transformation; leadership vision alone is not enough. Adopting scalable "virtual surrogates" to get around physical hardware constraints and directing faculty growth toward required annual industry attachments and specialized 4IR certifications are among the recommendations. In order to evaluate the efficacy of policies and investigate the impact of foreign direct investment on polytechnic institutions' sensing capacities, future studies should follow these factors longitudinally.
Abstract: This research explores the main drivers of Industry 4.0 (I4.0) adoption inside government-owned polytechnic institutions in Addis Ababa, Ethiopia, focusing on the interplay between technology infrastructure, human capital, and governance. This study's main goal is to examine how these institutional factors affect colleges' capacity to match their v...
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