‘Unwasting’ waste: Valorisation of cocoa pod husks for black soap production

Authors

DOI:

https://doi.org/10.3112/erdkunde.2025.02.03

Keywords:

black soap, cocoa, Ghana, global production networks, waste valorisation, upgrading

Abstract

This article examines how agricultural waste - in the form of cocoa pod husks (CPHs) - can be valorised through integration into alternative production networks. Drawing on the case of CPH-based black soap production in Ghana, we use the Global Production Network (GPN) approach to analyse how local value creation and enhancement of agricultural waste is affected by underlying production network structures. We argue that the transformation of CPHs into soap represents both a spatial and structural shift: although CPHs originate within the global cocoa-chocolate production network, their revaluation unfolds in a distinct, small-scale, locally embedded production network. This overlap creates frictions that constrain value capture, particularly for small-scale producers. Based on qualitative interviews, we show how actors’ embeddedness - societal, territorial, and network embeddedness - mediates upgrading opportunities. While cosmetic companies benefit from greater network embeddedness and capital, small-scale producers face regulatory barriers, information asymmetries, and limited collective organisation. Although cocoa farmer cooperatives represent important agents of collective power, existing support schemes often fail to align these structures with the specific requirements and dynamics of black soap production networks. By integrating literature on agricultural by-products, waste, and upgrading into GPN analysis, the article contributes to a deeper understanding of value creation beyond conventional production networks and calls for more inclusive and network-sensitive development strategies.

References

Adewusi AO, Akanle O (2020) Ọsẹ Dúdú: exploring the benefits of yoruba indigenous black soap in Southwest, Nigeria. International Indigenous Policy Journal 11: 1–20. https://doi.org/10.18584/iipj.2020.11.1.10258

Adomako DK (2006) Project on pilot plants to process cocoa by-products: Summary report on a pilot project in Ghana. Abidjan. https://www.icco.org/project-on-pilot-plants-for-the-processing-of-cocoa-by-products-in-ghana/

Ahmad R, Arnold H, Dachs I (2023) Input on cocoa by-products. Findings from fieldwork in Ghana. Webinar on Cocoa By-Products in Cooperation with the University of Osnabrück, African Cocoa Platform, GIZ, 15 March 2023.

Ahoa E, Kassahun A, Tekinerdogan B, Verdouw C (2021) Analyzing and designing business processes in the Ghana cocoa supply chain for supporting inclusiveness. Sustainability 13: 12440. https://doi.org/10.3390/su132212440

Alabi DL, Makinde DF (2023) Involvement of rural households along enterprise value chain of the indigenous black-soap from ash-derived alkali. Ghana Journal of Science 63: 43–56. https://doi.org/10.4314/gjs.v63i2.5

Amuzu D, Neimark B, Kull C (2022) Bittersweet cocoa: Certification programmes in Ghana as battlegrounds for power, authority and legitimacy. Geoforum 136: 54–67. https://doi.org/10.1016/j.geoforum.2022.08.002

Antwi E, Engler N, Nelles M, Schüch A (2019) Anaerobic digestion and the effect of hydrothermal pretreatment on the biogas yield of cocoa pods residues. Waste Management 88: 131–140. https://doi.org/10.1016/j.wasman.2019.03.034

Asamoah D, Annan J (2012) Analysis of Ghana’s cocoa value chain towards services and standards for stakeholders. International Journal of Services and Standards 8: 116–132. https://dx.doi.org/10.1504/IJSS.2012.049423

Awafo EA, Owusu PA (2022) Energy and water mapping of the cocoa value chain in Ghana. Sustainable Production and Consumption 29: 341–356. https://doi.org/10.1016/j.spc.2021.10.027

Bollhorn K, Franz M (2016) Production network knowledge as a foundation for resistance - Workers influence on a Chinese acquisition in Germany. Tijdschrift voor economische en sociale geografie 107: 407–420. https://doi.org/10.1111/tesg.12164

Bolwig S, Ponte S, Du Toit A, Riisgaard L, Halberg N (2010) Integrating poverty and environmental concerns into value-chain analysis: A conceptual framework. Development Policy Review 28: 173–194. https://doi.org/10.1111/j.1467-7679.2010.00480.x

Brooks A (2012) Networks of power and corruption: The trade of Japanese used cars to Mozambique. The Geographical Journal 178: 80–92. https://doi.org/10.1111/j.1475-4959.2011.00410.x

Campos RC, Pinto VRA, Melo LF, Da Rocha SJSS, Coimbra JS (2021) New sustainable perspectives for “coffee wastewater” and other by-products: A critical review. Future Foods 4: 100058. https://doi.org/10.1016/j.fufo.2021.100058

Campos-Vega R, Nieto-Figueroa KH, Oomah BD (2018) Cocoa (Theobroma cacao L.) pod husk: Renewable source of bioactive compounds. Trends in Food Science & Technology 81: 172–184. https://doi.org/10.1016/j.tifs.2018.09.022

Coe NM (2021) Advanced introduction to global production networks. Cheltenham.

Coe NM, Dicken P, Hess M (2008) Global production networks: Realizing the potential. Journal of economic geography 8: 271–295. https://doi.org/10.1093/jeg/lbn002

Coe NM, Yeung HW (2015) Global production networks. Theorizing economic development in an interconnected world. Oxford.

Coe NM, Yeung HW (2019) Global production networks: Mapping recent conceptual developments. Journal of Economic Geography 19: 775–801. https://doi.org/10.1093/jeg/lbz018

Crang M, Hughes A, Gregson N, Norris L, Ahamed F (2013) Rethinking governance and value in commodity chains through global recycling networks. Transactions of the Institute of British Geographers 38: 12–24. https://doi.org/10.1111/j.1475-5661.2012.00515.x

CRIG (Cocoa Research Institute of Ghana) (2012) A manual for extraction of cocoa potash and production of cocoa soft soap. New Tafo Akyem.

Dachs I, Rülke J, Franz M (2025) Bringing a circular economy perspective into global production networks: Cocoa pod husk-based compost production in Ghana. Journal of Cleaner Production 519: 145955. https://doi.org/10.1016/j.jclepro.2025.145955

Emergen Research (2025) Soap market size. Surrey, British Columbia. https://www.emergenresearch.com/industry-report/soap-market?srsltid=AfmBOoq7Y7wiBmj_Lq-A0czr7hE7jQ8j3-ynwfzIzw-ihjg0q0-4rSAc

Fold N, Larsen MN (2011) Upgrading of smallholder agro-food production in Africa: The role of lead firm strategies and new markets. International Journal of Technological Learning, Innovation and Development 4: 39-66. https://doi.org/10.1504/IJTLID.2011.041899

Franz M, Schlitz N, Schumacher KP (2018) Globalization and the water-energy-food nexus – Using the global production networks approach to analyze society-environment relations. Environmental Science & Policy 90: 201–212. https://doi.org/10.1016/j.envsci.2017.12.004

Gereffi G, Humphrey J, Sturgeon T (2005) The governance of global value chains. Review of international political economy 12: 78–104. https://doi.org/10.1080/09692290500049805

Gibbon P, Ponte S (2005) Trading down: Africa, value chains, and the global economy. Philadelphia.

Gregson N, Crang M, Ahamed F, Akhter N, Ferdous R (2010) Following things of rubbish value: End-of-life ships, ‘chock-chocky’ furniture and the Bangladeshi middle class consumer. Geoforum 41: 846–854. https://doi.org/10.1016/j.geoforum.2010.05.007

Grumiller J (2018) Upgrading potentials and challenges in commodity-based value chains: The Ivorian and Ghanaian cocoa processing sectors. Journal für Entwicklungspolitik 34: 15–45. https://doi.org/10.20446/JEP-2414-3197-34-3-15

Gyedu-Akoto E, Yabani D, Sefa J, Owusu D (2015) Natural skin-care products: The case of soap made from cocoa pod husk potash. Advances in Research 4: 365–370. https://doi.org/10.9734/AIR/2015/17029

Henderson J, Dicken P, Hess M, Coe N, Yeung HW (2002) Global production networks and the analysis of economic development. Review of International Political Economy 9: 436–464. https://doi.org/10.1080/09692290210150842

Hernández V, Pedersen T (2017) Global value chain configuration: A review and research agenda. BRQ Business Research Quarterly 20: 137–150. https://doi.org/10.1016/j.brq.2016.11.001

Herod A, Pickren G, Rainnie A, Mcgrath Champ S (2014) Global destruction networks, labour and waste. Journal of Economic Geography 14: 421–441. https://doi.org/10.1093/jeg/lbt015

Hess M (2004) ‘Spatial’ relationships? Towards a reconceptualization of embeddedness. Progress in Human Geography 28: 165–186. https://doi.org/10.1191/0309132504ph479oa

Hess M (2008) Governance, value chains and networks: An afterword. Economy and Society 37: 452–59. https://doi.org/10.1080/03085140802172722

Humphrey J, Schmitz H (2002) Developing country firms in the world economy: Governance and upgrading in global value chains. Duisburg.

Hütz-Adams F, Huber C, Knoke I, Morazan P, Mürlebach M (2016) Strengthening the competitiveness of cocoa production and improving the income of cocoa producers in West and Central Africa. Bonn.

Icco (International Cocoa Organization)(2023) Production of cocoa beans. Abidjan. https://www.icco.org/wp-content/uploads/Production_QBCS-XLIX-No.-1.pdf

Icco (International Cocoa Organization) (2025) Monthly cocoa market report February 2025. Abidjan. https://www.icco.org/wp-content/uploads/Cocoa-Market-Report-February-2025.pdf

International Trade Centre (2025) List of exporters for the selected product. Product: 1802 Cocoa shells, husks, skins and other cocoa waste. Geneva. https://www.trademap.org/Country_SelProduct_TS.aspx

Kalvatchev Z, Garzaro D, Cedezo FG (1998) Theobroma cacao L.: un nuevo enfoque para nutrición y salud. Agroalimentaria 6: 23–25.

Kenzhegaliyeva A, Lund HB (2024) The role of proximity in environmental upgrading: Plastics recycling in Norwegian aquaculture. Geoforum 150: 103969. https://doi.org/10.1016/j.geoforum.2024.103969

Klein O, Nier S, Tamásy C (2021) Towards a circular bioeconomy? Pathways and spatialities of agri-food waste valorisation. Tijdschrift voor economische en sociale geografie 113: 194–210. https://doi.org/10.1111/tesg.12500

Konde KS, Nagarajan S, Kumar V, Patil SV, Ranade VV (2021) Sugarcane bagasse based biorefineries in India: Potential and challenges. Sustainable Energy & Fuels 5: 52–78. https://doi.org/10.1039/D0SE01332C

Krishnan K, De Marchi V, Ponte S (2023) Environmental upgrading and downgrading in global value chains: A framework for analysis. Economic Geography 99: 25–50. https://doi.org/10.1080/00130095.2022.2100340

Laser S (2024). Through waste. Krüger AK, Peetz T, Schäfer H (eds) The Routledge International Handbook of Valuation and Society: 117–126. https://doi.org/10.4324/9781003229353

Lepawsky J, Billah M (2011) Making chains that (un)make things: Waste–value relations and the Bangladeshi rubbish electronics industry. Geografiska Annaler: Series B, Human Geography 93: 121–139. https://doi.org/10.1111/j.1468-0467.2011.00365.x

Longhurst R (2009) Interviews: In-depth, semi-structured. Kitchin R, Thrift NJ (eds) International encyclopedia of human geography: 80–584. Oxford. https://doi.org/10.1016/B978-008044910-4.00458-2

Lu F, Rodriguez-Garcia J, Van Damme I, Westwood Nj, Shaw L, Robinson JS, Warren G, Chatzifragkou A, Mcqueen Mason S, Gomez L, Faas L, Balcombe K, Srinivasan C, Picchioni F, Hadley P, Charalampopoulos D (2018) Valorization strategies for cocoa pod husk and its fractions. Current Opinion in Green and Sustainable Chemistry 14: 80–88. https://doi.org/10.1016/j.cogsc.2018.07.007

Mayring P (2022) Qualitative Inhaltsanalyse: Grundlagen und Techniken. Weinheim.

Neilson J, Pritchard B, Fold N, Dwiartama A (2018) Lead firms in the cocoa–chocolate global production network: An assessment of the deductive capabilities of GPN 2.0. Economic Geography 94: 400–424. https://doi.org/10.1080/00130095.2018.1426989

Oddoye EOK, Agyente-Badu CK, Gyedu-Akoto E (2013) Cocoa and its by-products: identification and utilization. Watson RR, Preedy VR, Zibadi S (eds.) Chocolate in health and nutrition: 23–37. Totowa. https://doi.org/10.1007/978-1-61779-803-0_3

Ogunbiyi A, Enechukwu NA (2021) African black soap: Physiochemical, phytochemical properties, and uses. Dermatologic Therapy 34: e14870. https://doi.org/10.1111/dth.14870

Oyeniran KA, Oladunmoye MK, Aladeselu HO (2015) Comparative studies in the release of sodium and potassium ions by indigenous black soaps from some selected skin pathogens. Research Journal of Microbiology 10: 592–599. https://doi.org/10.3923/jm.2015.592.599

Panak Balentić J, Ačkar,Đ, Jokić S, Jozinović A, Babić J, Miličević, B, Šubarić D, Pavlović N (2018) Cocoa shell: A by-product with great potential for wide application. Molecules 23: 1–14. https://doi.org/10.3390/molecules23061404

Pickren G (2015) Making connections between global production networks for used goods and the realm of production: A case study on e-waste governance. Global Networks 15: 403–423. https://doi.org/10.1111/glob.12071

Quintero Rizzuto ML (2020) La cadena agroalimentaria del cacao en Venezuela: hacia el desarrollo territorial. Agroalimentaria 26: 213–237. https://doi.org/10.22004/AG.ECON.316817

Riisgaard L, Bolwig S, Ponte S, Du Toit A, Halberg N, Matose F (2010) Integrating poverty and environmental concerns into value-chain analysis: A strategic framework and practical Guide. Development Policy Review 28: 195–216. https://doi.org/10.1111/j.1467-7679.2010.00481.x

Schlitz N (2020) Environmental change and the informal plastic recycling networks of Kolkata. Singapore Journal of Tropical Geography 41: 450–467. https://doi.org/10.1111/sjtg.12324

Taiwo O (2001) Evaluation of various agro-wastes for traditional black soap production. Bioresource Technology 79: 95–97. https://doi.org/10.1016/s0960-8524(00)00188-7

Torres-León C, Ramírez-Guzman N, Londoño-Hernandez L, Martinez- Medina GA, Díaz-Herrera R, Navarro-Macias V, Alvarez-Pérez OB, Picazo B, Villarreal-Vázquez M, Ascacio-Valdes J, Aguilar CN (2018) Food waste and byproducts: An opportunity to minimize malnutrition and hunger in developing countries. Frontiers in Sustainable Food Systems 2: 1–17. https://doi.org/10.3389/fsufs.2018.00052

Vásquez ZS, Carvalho Neto DP De, Pereira GVM, Vandenberghe LPS, Oliveira PZ De, Tiburcio PB, Rogez HLG, Góes Neto A, Soccol CR (2019) Biotechnological approaches for cocoa waste management: A review. Waste Management 90: 72–83. https://doi.org/10.1016/j.wasman.2019.04.030

Vicol M, Fold N, Pritchard B, Neilson J (2019) Global production networks, regional development trajectories and smallholder livelihoods in the Global South. Journal of Economic Geography 19: 973–993. https://doi.org/10.1093/jeg/lby065

Vitali F, Parmigiani S, Vaccari M, Collivignarelli C (2013) Agricultural waste as household fuel: Techno-economic assessment of a new rice-husk cookstove for developing countries. Waste Management 33: 2762–2770. https://doi.org/10.1016/j.wasman.2013.08.026

Wong AM (2022) Valued waste/wasted value: Waste, value and the labour process in electronic waste recycling in Singapore and Malaysia. Geography Compass 16: e12616. https://doi.org/10.1111/gec3.12616

Downloads

Published

2025-08-14

How to Cite

Rülke, J., Arnold, H., & Franz, M. (2025). ‘Unwasting’ waste: Valorisation of cocoa pod husks for black soap production. ERDKUNDE, 79(2), 131–145. https://doi.org/10.3112/erdkunde.2025.02.03

Issue

Section

Research Article